GitHub/moto-9609/android_kernel_motorola_exynos9610.git
9 years agonfs: only reset desc->pg_mirror_idx when mirroring is supported
Peng Tao [Mon, 10 Nov 2014 00:35:34 +0000 (08:35 +0800)]
nfs: only reset desc->pg_mirror_idx when mirroring is supported

so that we don't reset desc->pg_mirror_idx for read unnecessarily.
Remove WARN_ON_ONCE from __nfs_pageio_add_request to allow LD to
set pg_mirror_idx for read where pg_mirror_count is always 1.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <loghyr@primarydata.com>
9 years agonfs41: add a debug warning if we destroy an unempty layout
Peng Tao [Fri, 10 Oct 2014 15:25:46 +0000 (23:25 +0800)]
nfs41: add a debug warning if we destroy an unempty layout

So that we can detect the case if some layout segments are still
pinned which is surely a bug that we need to fix.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
9 years agopnfs: fail comparison when bucket verifier not set
Weston Andros Adamson [Wed, 1 Oct 2014 16:58:25 +0000 (12:58 -0400)]
pnfs: fail comparison when bucket verifier not set

This skips the WARN_ON_ONCE, but doesnt change behavior (the memcmp would
fail).

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs: mirroring support for direct io
Weston Andros Adamson [Fri, 19 Sep 2014 16:48:33 +0000 (12:48 -0400)]
nfs: mirroring support for direct io

The current mirroring code only notices short writes to the first
mirror. This patch keeps per-mirror byte counts and only considers
a byte to be written once all mirrors report so.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
9 years agonfs: add mirroring support to pgio layer
Weston Andros Adamson [Fri, 19 Sep 2014 14:55:07 +0000 (10:55 -0400)]
nfs: add mirroring support to pgio layer

This patch adds mirrored write support to the pgio layer. The default
is to use one mirror, but pgio callers may define callbacks to change
this to any value up to the (arbitrarily selected) limit of 16.

The basic idea is to break out members of nfs_pageio_descriptor that cannot
be shared between mirrored DSes and put them in a new structure.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
9 years agopnfs: pass ds_commit_idx through the commit path
Weston Andros Adamson [Fri, 5 Sep 2014 22:20:21 +0000 (18:20 -0400)]
pnfs: pass ds_commit_idx through the commit path

Pass ds_commit_idx through the nfs commit path. It's used to select
the commit bucket when using pnfs and is ignored when not using pnfs.
Several functions had to be changed: nfs_retry_commit,
nfs_mark_request_commit, pnfs_mark_request_commit and the pnfs layout
driver .mark_request_commit functions.

Signed-off-by: Tom Haynes <loghyr@primarydata.com>
9 years agonfs: rename pgio header ds_idx to ds_commit_idx
Weston Andros Adamson [Tue, 16 Sep 2014 21:35:51 +0000 (17:35 -0400)]
nfs: rename pgio header ds_idx to ds_commit_idx

'ds_commit_idx' is a better name - it is used to select the right
commit bucket for pnfs.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
9 years agonfs: handle overlapping reqs in lock_and_join
Weston Andros Adamson [Fri, 5 Sep 2014 20:34:29 +0000 (16:34 -0400)]
nfs: handle overlapping reqs in lock_and_join

This is needed for mirrored DS support, where multuple requests
cover the same range.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
9 years agopnfs: release lseg in pnfs_generic_pg_cleanup
Weston Andros Adamson [Wed, 10 Sep 2014 19:48:01 +0000 (15:48 -0400)]
pnfs: release lseg in pnfs_generic_pg_cleanup

This is needed to support mirrored writes - the first write can't just
trash the lseg, we need to keep it around until all mirrors have
written.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
9 years agonfs: introduce pg_cleanup op for pgio descriptors
Weston Andros Adamson [Wed, 10 Sep 2014 19:44:18 +0000 (15:44 -0400)]
nfs: introduce pg_cleanup op for pgio descriptors

Add a new operation to nfs_pageio_ops that is called on nfs_pageio_complete.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
9 years agonfs/filelayout: use pnfs_error_mark_layout_for_return
Peng Tao [Fri, 5 Sep 2014 16:53:29 +0000 (00:53 +0800)]
nfs/filelayout: use pnfs_error_mark_layout_for_return

Instead of calling layoutreturn directly, call pnfs_error_mark_layout_for_return
to mark layouts for return and let generic code return layout when
layout segments are freed.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
Conflicts:
fs/nfs/filelayout/filelayout.c

9 years agonfs41: clear NFS_LAYOUT_RETURN if layoutreturn is sent or failed to send
Peng Tao [Fri, 5 Sep 2014 16:53:26 +0000 (00:53 +0800)]
nfs41: clear NFS_LAYOUT_RETURN if layoutreturn is sent or failed to send

So that pnfs path is not disabled for ever.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: send layoutreturn in last put_lseg
Peng Tao [Fri, 5 Sep 2014 16:53:25 +0000 (00:53 +0800)]
nfs41: send layoutreturn in last put_lseg

If current lseg is the last lseg marked with NFS_LSEG_LAYOUTRETURN,
send layoutreturn.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: don't use a layout if it is marked for returning
Peng Tao [Fri, 5 Sep 2014 16:53:24 +0000 (00:53 +0800)]
nfs41: don't use a layout if it is marked for returning

And if we are to return the same type of layouts, don't bother
sending more layoutgets.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: add a helper to mark layout for return
Peng Tao [Fri, 5 Sep 2014 16:53:23 +0000 (00:53 +0800)]
nfs41: add a helper to mark layout for return

It marks all matching layout segments as NFS_LSEG_LAYOUTRETURN,
which is an indicator for pnfs_put_lseg() to send layoutreturn,
and also prevents pnfs_update_layout() from using the returning
segments. Once it is set, it never gets cleared.

It also sets proper io failure bit so that pnfs path can be retried
after PNFS_LAYOUTGET_RETRY_TIMEOUT second.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: make a helper function to send layoutreturn
Peng Tao [Fri, 5 Sep 2014 16:53:22 +0000 (00:53 +0800)]
nfs41: make a helper function to send layoutreturn

It allows to specify different iomode to return.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: pass iomode through layoutreturn args
Peng Tao [Fri, 5 Sep 2014 16:53:21 +0000 (00:53 +0800)]
nfs41: pass iomode through layoutreturn args

So that it is possible to return a specific iomode layouts.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs: save server READ/WRITE/COMMIT status
Peng Tao [Wed, 27 Aug 2014 02:47:14 +0000 (10:47 +0800)]
nfs: save server READ/WRITE/COMMIT status

Flexfiles layout would want to use them to report DS IO status.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: serialize first layoutget of a file
Peng Tao [Fri, 22 Aug 2014 09:37:41 +0000 (17:37 +0800)]
nfs41: serialize first layoutget of a file

Per RFC 5661 Errata 3208:
| A client MAY always forget its layout state and associated
| layout stateid at any time (See also section 12.5.5.1).
| In such case, the client MUST use a non-layout stateid for the next
| LAYOUTGET operation. This will signal the server that the client has
| no more layouts on the file and its respective layout state can be
| released before issuing a new layout in response to LAYOUTGET.

In order to make such a signal unique to server, client needs to serialize
all layoutgets using non-layout stateid. We implement this by serializing
layoutgets when client has no layout segments at hand.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: close a small race window when adding new layout to global list
Peng Tao [Fri, 22 Aug 2014 09:37:40 +0000 (17:37 +0800)]
nfs41: close a small race window when adding new layout to global list

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs/flexclient: export pnfs_layoutcommit_inode
Peng Tao [Thu, 7 Aug 2014 02:12:38 +0000 (10:12 +0800)]
nfs/flexclient: export pnfs_layoutcommit_inode

flexfiles needs to start layoutcommit when necessary

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
9 years agonfs: set hostname when creating nfsv3 ds connection
Peng Tao [Mon, 7 Jul 2014 22:21:10 +0000 (06:21 +0800)]
nfs: set hostname when creating nfsv3 ds connection

lockd assumes hostname exists otherwise kernel oops.
It can be reproduced by following steps:
1. mount flexfile MDS
2. write some files
3. mount DS via nfsv3

BUG: unable to handle kernel NULL pointer dereference at           (null)
 IP: [<ffffffff8134f332>] strlen+0x2/0x20
 PGD 0
 Oops: 0000 [#1] SMP
 Modules linked in: nfsd(F) nfs_layout_flexfiles(F) rpcsec_gss_krb5(F) auth_rpcgss(F) nfsv4(F) dns_resolver(F) nfsv3(F) nfs_acl(F) nfs(F) lockd(F) sunrpc(F) fscache(F) ebtable_nat(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6table_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat(F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) bnep(F) snd_ens1371(F) snd_rawmidi(F) snd_ac97_codec(F) btusb(F) ac97_bus(F) snd_seq(F) snd_seq_device(F) snd_pcm(F) ppdev(F) bluetooth(F) 6lowpan_iphc(F) rfkill(F) vmw_balloon(F) snd_timer(F) snd(F) soundcore(F) gameport(F) i2c_piix4(F) e1000(F) vmw_vmci(F) parport_pc(F) parport(F) shpchp(F) uinput(F) xfs(F) libcrc32c(F) vmwgfx(F) ttm(F) drm(F) mptspi(F) scsi_transport_spi(F) mptscsih(F) mptbase(F) i2c_core(F)
 CPU: 0 PID: 10397 Comm: mount.nfs Tainted: GF            3.14.7-100.pd_client.001.fc16.x86_64 #1
 Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013
 task: ffff880008942600 ti: ffff880007990000 task.ti: ffff880007990000
 RIP: 0010:[<ffffffff8134f332>]  [<ffffffff8134f332>] strlen+0x2/0x20
 RSP: 0018:ffff880007991aa0  EFLAGS: 00010246
 RAX: 0000000000000000 RBX: ffff880038d39c20 RCX: 0000000000000004
 RDX: 0000000000000006 RSI: 0000000000000010 RDI: 0000000000000000
 RBP: ffff880007991b38 R08: 0000000000000000 R09: 0000000000000000
 R10: 0000000000014600 R11: 0000000000000400 R12: ffffffff81cc8580
 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004
 FS:  00007f90cd2ef880(0000) GS:ffff88003f600000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000000 CR3: 0000000001710000 CR4: 00000000001407f0
 Stack:
  ffffffffa045f52c ffff880001782230 ffff880004141e28 0006880007991ac8
  ffffffff816dc14b ffff880000000000 ffff880038d39c20 0000000000000010
  0000000481cc0006 0000000000000000 ffffffffa0410be8 000000000000c014
 Call Trace:
  [<ffffffffa045f52c>] ? nlmclnt_lookup_host+0x4c/0x2c0 [lockd]
  [<ffffffff816dc14b>] ? _raw_spin_unlock_bh+0x1b/0x20
  [<ffffffffa0410be8>] ? svc_destroy+0xb8/0x140 [sunrpc]
  [<ffffffffa045c323>] nlmclnt_init+0x53/0xc0 [lockd]
  [<ffffffffa047d2dc>] ? nfs_get_client+0x1cc/0x340 [nfs]
  [<ffffffffa047c2e7>] nfs_start_lockd+0xa7/0xd0 [nfs]
  [<ffffffffa047df71>] nfs_create_server+0x181/0x5c0 [nfs]
  [<ffffffffa04460f3>] nfs3_create_server+0x13/0x30 [nfsv3]
  [<ffffffffa048a0bc>] nfs_try_mount+0x21c/0x300 [nfs]
  [<ffffffff811ca32d>] ? __kmalloc_track_caller+0x1ad/0x240
  [<ffffffffa048b677>] ? nfs_fs_mount+0xc37/0xd80 [nfs]
  [<ffffffffa048ad05>] nfs_fs_mount+0x2c5/0xd80 [nfs]
  [<ffffffffa048a830>] ? nfs_clone_super+0x140/0x140 [nfs]
  [<ffffffffa048a240>] ? nfs_clone_sb_security+0x40/0x40 [nfs]
  [<ffffffff811e7e43>] mount_fs+0x43/0x1b0
  [<ffffffff81193100>] ? __alloc_percpu+0x10/0x20
  [<ffffffff812026e6>] vfs_kern_mount+0x76/0x120
  [<ffffffff81204917>] do_mount+0x237/0xa80

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
9 years agosunrpc: add rpc_count_iostats_idx
Weston Andros Adamson [Tue, 24 Jun 2014 14:59:52 +0000 (10:59 -0400)]
sunrpc: add rpc_count_iostats_idx

Add a call to tally stats for a task under a different statsidx than
what's contained in the task structure.

This is needed to properly account for pnfs reads/writes when the
DS nfs version != the MDS version.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agoNFSv4.1/NFSv3: Add pNFS callbacks for nfs3_(read|write|commit)_done()
Trond Myklebust [Sun, 22 Jun 2014 16:55:11 +0000 (12:55 -0400)]
NFSv4.1/NFSv3: Add pNFS callbacks for nfs3_(read|write|commit)_done()

Enable pNFS callbacks to allow flex files to work correctly with a
NFSv3-enabled data server.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
9 years agonfs: allow to specify cred in nfs_initiate_pgio
Peng Tao [Fri, 13 Jun 2014 15:02:25 +0000 (23:02 +0800)]
nfs: allow to specify cred in nfs_initiate_pgio

so that flexfile layout client can pass in DS credential instead of
using user cred, which will be done in the next patch.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs4: export nfs4_sequence_done
Peng Tao [Tue, 10 Jun 2014 21:24:16 +0000 (05:24 +0800)]
nfs4: export nfs4_sequence_done

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs4: pass slot table to nfs40_setup_sequence
Peng Tao [Tue, 10 Jun 2014 21:24:15 +0000 (05:24 +0800)]
nfs4: pass slot table to nfs40_setup_sequence

flexclient needs this as there is no nfs_server to DS connection.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs: allow different protocol in nfs_initiate_commit
Peng Tao [Sun, 8 Jun 2014 23:10:14 +0000 (07:10 +0800)]
nfs: allow different protocol in nfs_initiate_commit

pnfs flexfile layout client may want to use NFSv3 ops rather
than the default MDS v4 ops.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agopnfs: Add nfs_rpc_ops in calls to nfs_initiate_pgio
Tom Haynes [Mon, 9 Jun 2014 20:12:20 +0000 (13:12 -0700)]
pnfs: Add nfs_rpc_ops in calls to nfs_initiate_pgio

Signed-off-by: Tom Haynes <loghyr@primarydata.com>
9 years agonfs41: create NFSv3 DS connection if specified
Peng Tao [Fri, 30 May 2014 10:15:59 +0000 (18:15 +0800)]
nfs41: create NFSv3 DS connection if specified

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: allow LD to choose DS connection version/minor_version
Peng Tao [Fri, 30 May 2014 10:15:58 +0000 (18:15 +0800)]
nfs41: allow LD to choose DS connection version/minor_version

flexfile layout may need to set such when making DS connections.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfsv3: introduce nfs3_set_ds_client
Peng Tao [Fri, 30 May 2014 10:15:57 +0000 (18:15 +0800)]
nfsv3: introduce nfs3_set_ds_client

The flexfiles layout wants to create DS connection over NFSv3.
Add nfs3_set_ds_client to allow that to happen.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: move file layout macros to generic pnfs
Peng Tao [Fri, 30 May 2014 10:15:55 +0000 (18:15 +0800)]
nfs41: move file layout macros to generic pnfs

They can be reused by flexfile layout as well.

Also add a code such that if read fails on one DS and
there are other DSes available to use, don't resend
through MDS but through pNFS so that client can read
from other DSes.

Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: allow LD to choose DS connection auth flavor
Peng Tao [Thu, 29 May 2014 13:07:00 +0000 (21:07 +0800)]
nfs41: allow LD to choose DS connection auth flavor

flexfile layout may use different auth flavor as specified by MDS.

Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: pull nfs4_ds_connect from file layout to generic pnfs
Peng Tao [Thu, 29 May 2014 13:06:58 +0000 (21:06 +0800)]
nfs41: pull nfs4_ds_connect from file layout to generic pnfs

It can be reused by flexfiles layout client.

Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: pull decode_ds_addr from file layout to generic pnfs
Peng Tao [Thu, 29 May 2014 13:06:59 +0000 (21:06 +0800)]
nfs41: pull decode_ds_addr from file layout to generic pnfs

It can be reused by flexfile layout.

Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agonfs41: pull data server cache from file layout to generic pnfs
Peng Tao [Thu, 29 May 2014 13:06:57 +0000 (21:06 +0800)]
nfs41: pull data server cache from file layout to generic pnfs

Also pull nfs4_pnfs_ds_addr and nfs4_pnfs_ds to generic pnfs.

They can all be reused by flexfile layout as well.

Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
9 years agopnfs: Do not grab the commit_info lock twice when rescheduling writes
Tom Haynes [Thu, 11 Dec 2014 18:04:55 +0000 (13:04 -0500)]
pnfs: Do not grab the commit_info lock twice when rescheduling writes

Acked-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Tom Haynes <loghyr@primarydata.com>
9 years agopnfs: Prepare for flexfiles by pulling out common code
Tom Haynes [Thu, 11 Dec 2014 20:34:59 +0000 (15:34 -0500)]
pnfs: Prepare for flexfiles by pulling out common code

The flexfilelayout driver will share some common code
with the filelayout driver. This set of changes refactors
that common code out to avoid any module depenencies.

Signed-off-by: Tom Haynes <loghyr@primarydata.com>
9 years agoLinux 3.19-rc5
Linus Torvalds [Sun, 18 Jan 2015 06:02:20 +0000 (18:02 +1200)]
Linux 3.19-rc5

9 years agoMerge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sun, 18 Jan 2015 06:00:40 +0000 (18:00 +1200)]
Merge tag 'armsoc-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "We've been sitting on our fixes branch for a while, so this batch is
  unfortunately on the large side.

  A lot of these are tweaks and fixes to device trees, fixing various
  bugs around clocks, reg ranges, etc.  There's also a few defconfig
  updates (which are on the late side, no more of those).

  All in all the diffstat is bigger than ideal at this time, but nothing
  in here seems particularly risky"

* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (31 commits)
  reset: sunxi: fix spinlock initialization
  ARM: dts: disable CCI on exynos5420 based arndale-octa
  drivers: bus: check cci device tree node status
  ARM: rockchip: disable jtag/sdmmc autoswitching on rk3288
  ARM: nomadik: fix up leftover device tree pins
  ARM: at91: board-dt-sama5: add phy_fixup to override NAND_Tree
  ARM: at91/dt: sam9263: Add missing clocks to lcdc node
  ARM: at91: sama5d3: dt: correct the sound route
  ARM: at91/dt: sama5d4: fix the timer reg length
  ARM: exynos_defconfig: Enable LM90 driver
  ARM: exynos_defconfig: Enable options for display panel support
  arm: dts: Use pmu_system_controller phandle for dp phy
  ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances
  ARM: dts: berlin: correct BG2Q's SM GPIO location.
  ARM: dts: berlin: add broken-cd and set bus width for eMMC in Marvell DMP DT
  ARM: dts: berlin: fix io clk and add missing core clk for BG2Q sdhci2 host
  ARM: dts: Revert disabling of smc91x for n900
  ARM: dts: imx51-babbage: Fix ULPI PHY reset modelling
  ARM: dts: dra7-evm: fix qspi device tree partition size
  ARM: omap2plus_defconfig: use CONFIG_CPUFREQ_DT
  ...

9 years agoMerge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux
Linus Torvalds [Sun, 18 Jan 2015 03:29:11 +0000 (15:29 +1200)]
Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux

Pull clock driver fixes from Mike Turquette:
 "Small number of fixes for clock drivers and a single null pointer
  dereference fix in the framework core code.

  The driver fixes vary from fixing section mismatch warnings to
  preventing machines from hanging (and preventing developers from
  crying)"

* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux:
  clk: fix possible null pointer dereference
  Revert "clk: ppc-corenet: Fix Section mismatch warning"
  clk: rockchip: fix deadlock possibility in cpuclk
  clk: berlin: bg2q: remove non-exist "smemc" gate clock
  clk: at91: keep slow clk enabled to prevent system hang
  clk: rockchip: fix rk3288 cpuclk core dividers
  clk: rockchip: fix rk3066 pll lock bit location
  clk: rockchip: Fix clock gate for rk3188 hclk_emem_peri
  clk: rockchip: add CLK_IGNORE_UNUSED flag to fix rk3066/rk3188 USB Host

9 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sun, 18 Jan 2015 03:26:52 +0000 (15:26 +1200)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is one fix for a Multiqueue sleeping in invalid context problem
  and a MAINTAINER file update for Qlogic"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ->queue_rq can't sleep
  MAINTAINERS: Update maintainer list for qla4xxx

9 years agoclk: fix possible null pointer dereference
Stanimir Varbanov [Mon, 5 Jan 2015 16:04:23 +0000 (18:04 +0200)]
clk: fix possible null pointer dereference

The commit 646cafc6 (clk: Change clk_ops->determine_rate to
return a clk_hw as the best parent) opens a possibility for
null pointer dereference, fix this.

Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
9 years agoRevert "clk: ppc-corenet: Fix Section mismatch warning"
Kevin Hao [Wed, 3 Dec 2014 08:53:51 +0000 (16:53 +0800)]
Revert "clk: ppc-corenet: Fix Section mismatch warning"

This reverts commit da788acb28386aa896224e784954bb73c99ff26c.

That commit tried to fix the section mismatch warning by moving the
ppc_corenet_clk_driver struct to init section. This is definitely wrong
because the kernel would free the memories occupied by this struct
after boot while this driver is still registered in the driver core.
The kernel would panic when accessing this driver struct.

Cc: stable@vger.kernel.org # 3.17
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
9 years agoclk: rockchip: fix deadlock possibility in cpuclk
Heiko Stübner [Fri, 16 Jan 2015 16:52:44 +0000 (17:52 +0100)]
clk: rockchip: fix deadlock possibility in cpuclk

Lockdep reported a possible deadlock between the cpuclk lock and for example
the i2c driver.

       CPU0                    CPU1
       ----                    ----
  lock(clk_lock);
                               local_irq_disable();
                               lock(&(&i2c->lock)->rlock);
                               lock(clk_lock);
  <Interrupt>
    lock(&(&i2c->lock)->rlock);

 *** DEADLOCK ***

The generic clock-types of the core ccf already use spin_lock_irqsave when
touching clock registers, so do the same for the cpuclk.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
[mturquette@linaro.org: removed initialization of "flags"]

9 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Sat, 17 Jan 2015 18:26:24 +0000 (06:26 +1200)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "Two patches, the first by Andy to fix dw dmac runtime pm and second
  one by me to fix the dmaengine headers in MAINTAINERS"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: dw: balance PM runtime calls
  MAINTAINERS: dmaengine: fix the header file for dmaengine

9 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 17 Jan 2015 18:24:30 +0000 (06:24 +1200)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Mostly tooling fixes, but also two PMU driver fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools powerpc: Use dwfl_report_elf() instead of offline.
  perf tools: Fix segfault for symbol annotation on TUI
  perf test: Fix dwarf unwind using libunwind.
  perf tools: Avoid build splat for syscall numbers with uclibc
  perf tools: Elide strlcpy warning with uclibc
  perf tools: Fix statfs.f_type data type mismatch build error with uclibc
  tools: Remove bitops/hweight usage of bits in tools/perf
  perf machine: Fix __machine__findnew_thread() error path
  perf tools: Fix building error in x86_64 when dwarf unwind is on
  perf probe: Propagate error code when write(2) failed
  perf/x86/intel: Fix bug for "cycles:p" and "cycles:pp" on SLM
  perf/rapl: Fix sysfs_show() initialization for RAPL PMU

9 years agoMerge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Sat, 17 Jan 2015 10:04:35 +0000 (11:04 +0100)]
Merge tag 'perf-urgent-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

  - Fix segfault when using both the map symtab viewer and annotation
    in the TUI (Namhyung Kim).

  - uClibc build fixes (Alexey Brodkin, Vineet Gupta).

  - bitops/hweight were moved from tools/perf/ too tools/include, move
    some leftovers (Arnaldo Carvalho de Melo)

  - Fix dwarf unwind x86_64 build error (Namhyung Kim)

  - Fix __machine__findnew_thread() error path (Namhyung Kim)

  - Propagate error code when write(2) failed in 'perf probe' (Namhyung Kim)

  - Use dwfl_report_elf() instead of offline in powerpc bits to
    properly handle non prelinked DSOs (Sukadev Bhattiprolu).

  - Fix dwarf unwind using libunwind in 'perf test' (Wang Nan)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agoMerge tag 'samsung-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene...
Olof Johansson [Thu, 15 Jan 2015 23:45:18 +0000 (15:45 -0800)]
Merge tag 'samsung-fixes-3.19' of git://git./linux/kernel/git/kgene/linux-samsung into fixes

Merge "Samsung fixes for v3.19" from Kukjin Kim:

Samsung fixes for v3.19
- exynos_defconfig: enable LM90 driver and display panel support
   - HWMON
   - SENSORS_LM90
   - Direct Rendering Manager (DRM)
   - DRM bridge registration and lookup framework
   - Parade ps8622/ps8625 eDP/LVDS bridge
   - NXP ptn3460 eDP/LVDS bridge
   - Exynos Fully Interactive Mobile Display controller (FIMD)
   - Panel registration and lookup framework
   - Simple panels
   - Backlight & LCD device support

- use pmu_system_controller phandle for dp phy
  : DP PHY requires pmu_system_controller to handle PMU reg. now

* tag 'samsung-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: exynos_defconfig: Enable LM90 driver
  ARM: exynos_defconfig: Enable options for display panel support
  arm: dts: Use pmu_system_controller phandle for dp phy

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoreset: sunxi: fix spinlock initialization
Tyler Baker [Mon, 12 Jan 2015 15:54:46 +0000 (07:54 -0800)]
reset: sunxi: fix spinlock initialization

Call spin_lock_init() before the spinlocks are used, both in early init
and probe functions preventing a lockdep splat.

I have been observing lockdep complaining [1] during boot on my a80 optimus [2]
when CONFIG_PROVE_LOCKING has been enabled. This patch resolves the splat,
and has been tested on a few other sunxi platforms without issue.

[1] http://storage.kernelci.org/next/next-20150107/arm-multi_v7_defconfig+CONFIG_PROVE_LOCKING=y/lab-tbaker/boot-sun9i-a80-optimus.html
[2] http://kernelci.org/boot/?a80-optimus

Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Cc: <stable@vger.kernel.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'renesas-soc-fixes-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Tue, 13 Jan 2015 23:32:43 +0000 (15:32 -0800)]
Merge tag 'renesas-soc-fixes-for-v3.19' of git://git./linux/kernel/git/horms/renesas into fixes

Merge "Renesas ARM Based SoC Fixes for v3.19" from Simon Horman:

Renesas ARM Based SoC Fixes for v3.19

This pull request is based on the last round of SoC updates for v3.19,
Fourth Round of Renesas ARM Based SoC Updates for v3.19, tagged as
renesas-soc3-for-v3.19, merged into your next/soc branch and included in
v3.19-rc1.

- ARM: shmobile: r8a7740: Instantiate GIC from C board code in legacy builds

  Set .control_parent for all irqpin instances for sh73a0 SoC when booting
  using legacy C.

- ARM: shmobile: r8a7740: Instantiate GIC from C board code in legacy builds

  This fixes a long standing problem which has been present since
  the sh73a0 SoC started using the INTC External IRQ pin driver.

  The patch that introduced the problem is 341eb5465f67437a ("ARM:
  shmobile: INTC External IRQ pin driver on sh73a0") which was included
  in v3.10.

* tag 'renesas-soc-fixes-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances
  ARM: shmobile: r8a7740: Instantiate GIC from C board code in legacy builds

9 years agoARM: dts: disable CCI on exynos5420 based arndale-octa
Abhilash Kesavan [Sat, 10 Jan 2015 03:11:36 +0000 (08:41 +0530)]
ARM: dts: disable CCI on exynos5420 based arndale-octa

The arndale-octa board was giving "imprecise external aborts" during
boot-up with MCPM enabled. CCI enablement of the boot cluster was found
to be the cause of these aborts (possibly because the secure f/w was not
allowing it). Hence, disable CCI for the arndale-octa board.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agodrivers: bus: check cci device tree node status
Abhilash Kesavan [Sat, 10 Jan 2015 03:11:35 +0000 (08:41 +0530)]
drivers: bus: check cci device tree node status

The arm-cci driver completes the probe sequence even if the cci node is
marked as disabled. Add a check in the driver to honour the cci status
in the device tree.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux...
Olof Johansson [Mon, 12 Jan 2015 22:11:58 +0000 (14:11 -0800)]
Merge tag 'at91-fixes' of git://git./linux/kernel/git/nferre/linux-at91 into fixes

Merge "at91: fixes for 3.19 #1 (ter)" from Nicolas Ferre:

First fixes batch for AT91 on 3.19:
- fix some DT entries
- correct clock entry for the at91sam9263 LCD
- add a phy_fixup for Eth1 on sama5d4

* tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: at91: board-dt-sama5: add phy_fixup to override NAND_Tree
  ARM: at91/dt: sam9263: Add missing clocks to lcdc node
  ARM: at91: sama5d3: dt: correct the sound route
  ARM: at91/dt: sama5d4: fix the timer reg length

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoARM: rockchip: disable jtag/sdmmc autoswitching on rk3288
Heiko Stübner [Sun, 11 Jan 2015 22:09:23 +0000 (23:09 +0100)]
ARM: rockchip: disable jtag/sdmmc autoswitching on rk3288

rk3288 SoCs have a function to automatically switch between jtag/sdmmc pinmux
settings depending on the card state. This collides with a lot of assumptions.

It only works when using the internal card-detect mechanism and breaks
horribly when using either the normal card-detect via the slot-gpio function
or via any other pin. Also there is of course no link between the mmc and jtag
on the software-side, so the jtag clocks may very well be disabled when the
card is ejected and the soc switches back to the jtag pinmux.

Leaving the switching function enabled did result in mmc timeouts and rcu
stalls thus hanging the system on 3.19-rc1. Therefore disable it in all cases,
as we expect the devicetree to explicitly select either mmc or jtag pinmuxes
anyway.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'berlin-fixes-for-3.19-1' of git://git.infradead.org/users/hesselba/linux...
Olof Johansson [Sun, 11 Jan 2015 21:07:05 +0000 (13:07 -0800)]
Merge tag 'berlin-fixes-for-3.19-1' of git://git.infradead.org/users/hesselba/linux-berlin into fixes

Merge "ARM: berlin: Fixes for v3.19 (round 1)" from Sebastian Hesselbarth:

Marvell Berlin fixes for v3.19 round 1:
- SDHCI DT fixes for BG2Q and BG2Q reference board
- BG2Q SM GPIO DT node relocation

* tag 'berlin-fixes-for-3.19-1' of git://git.infradead.org/users/hesselba/linux-berlin:
  ARM: dts: berlin: correct BG2Q's SM GPIO location.
  ARM: dts: berlin: add broken-cd and set bus width for eMMC in Marvell DMP DT
  ARM: dts: berlin: fix io clk and add missing core clk for BG2Q sdhci2 host

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoARM: nomadik: fix up leftover device tree pins
Linus Walleij [Fri, 9 Jan 2015 19:11:20 +0000 (20:11 +0100)]
ARM: nomadik: fix up leftover device tree pins

We altered the device tree bindings for the Nomadik family of
pin controllers to be standard, this file was merged out-of-order
so we missed fixing this. Fix it up.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'omap-for-v3.19/fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Thu, 8 Jan 2015 22:43:00 +0000 (14:43 -0800)]
Merge tag 'omap-for-v3.19/fixes-rc1' of git://git./linux/kernel/git/tmlind/linux-omap into fixes

Merge "omap fixes against v3.19-rc1" from Tony Lindgren:

Fixes for omaps mostly to deal with dra7 timer issues
and hypervisor mode. The other fixes are minor fixes for
various boards. The summary of the fixes is:

- Fix real-time counter rate typos for some frequencies
- Fix counter frequency drift for am572x
- Fix booting of secondary CPU in HYP mode
- Fix n900 board name for legacy user space
- Fix cpufreq in omap2plus_defconfig after Kconfig change
- Fix dra7 qspi partitions

And also, let's re-enable smc91x on some n900 boards that
we have sitting in a few test boot systems after the boot
loader dependencies got fixed.

* tag 'omap-for-v3.19/fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: Revert disabling of smc91x for n900
  ARM: dts: dra7-evm: fix qspi device tree partition size
  ARM: omap2plus_defconfig: use CONFIG_CPUFREQ_DT
  ARM: OMAP2+: Fix n900 board name for legacy user space
  ARM: omap5/dra7xx: Enable booting secondary CPU in HYP mode
  ARM: dra7xx: Fix counter frequency drift for AM572x errata i856
  ARM: omap5/dra7xx: Fix frequency typos

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'imx-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo...
Olof Johansson [Thu, 8 Jan 2015 22:42:11 +0000 (14:42 -0800)]
Merge tag 'imx-fixes-3.19' of git://git./linux/kernel/git/shawnguo/linux into fixes

Merge "ARM: imx: fixes for 3.19" from Shawn Guo:

The i.MX fixes for 3.19:
 - One fix for incorrect i.MX25 SPI1 clock assignment in device tree,
   which causes system hang when accessing SPI1.
 - Correct i.MX6SX QSPI parent clock configuration to fix a kernel Oops.
 - Fix ULPI PHY reset modelling on imx51-babbage board to remove the
   dependency on bootloader for USB3317 ULPI PHY reset.
 - Correct video divider setting on i.MX6Q rev T0 1.0 to fix the issue
   that HDMI is not working at high resolution on T0 1.0.
 - One incremental fix for CODA960 VPU enabling in device tree to
   correct interrupt order.
 - LS1021A SCFG block works in BE mode, add device tree property
   big-endian to make it right.

* tag 'imx-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: imx51-babbage: Fix ULPI PHY reset modelling
  ARM: imx6sx: Set PLL2 as parent of QSPI clocks
  ARM: dts: imx25: Fix the SPI1 clocks
  ARM: clk-imx6q: fix video divider for rev T0 1.0
  ARM: dts: imx6qdl: Fix CODA960 interrupt order
  ARM: ls1021a: dtsi: add 'big-endian' property for scfg node

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'v3.19-rockchip-dtsfixes1' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Thu, 8 Jan 2015 22:38:36 +0000 (14:38 -0800)]
Merge tag 'v3.19-rockchip-dtsfixes1' of git://git./linux/kernel/git/mmind/linux-rockchip into fixes

Merge "ARM: rockchip: dts fix for 3.19" from Heiko Stübner:

Increase drive-strength to sdmmc pins on rk3288-evb to fix
an issue with the fixed highspeed card detection.

* tag 'v3.19-rockchip-dtsfixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  ARM: dts: rockchip: bump sd card pin drive strength up on rk3288-evb

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agokernel: avoid overflow in cmp_range
Louis Langholtz [Fri, 16 Jan 2015 05:04:46 +0000 (22:04 -0700)]
kernel: avoid overflow in cmp_range

Avoid overflow possibility.

[ The overflow is purely theoretical, since this is used for memory
  ranges that aren't even close to using the full 64 bits, but this is
  the right thing to do regardless.  - Linus ]

Signed-off-by: Louis Langholtz <lou_langholtz@me.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Peter Anvin <hpa@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoperf tools powerpc: Use dwfl_report_elf() instead of offline.
Sukadev Bhattiprolu [Sat, 22 Nov 2014 01:33:53 +0000 (20:33 -0500)]
perf tools powerpc: Use dwfl_report_elf() instead of offline.

dwfl_report_offline() works only when libraries are prelinked.

Replace dwfl_report_offline() with dwfl_report_elf() so we correctly
extract debug info even from libraries that are not prelinked.

Reported-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Link: http://lkml.kernel.org/r/20150114221045.GA17703@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoperf tools: Fix segfault for symbol annotation on TUI
Namhyung Kim [Wed, 14 Jan 2015 11:18:05 +0000 (20:18 +0900)]
perf tools: Fix segfault for symbol annotation on TUI

Currently the symbol structure is allocated with symbol_conf.priv_size
to carry sideband information like annotation, map browser on TUI and
sort-by-name tree node.  So retrieving these information from symbol
needs to care about the details of such placement.

However the annotation code just assumes that the symbol is placed after
the struct annotation.  But actually there's other info between them.
So accessing those struct will lead to an undefined behavior (usually a
crash) after they write their info to the same location.

To reproduce the problem, please follow the steps below:

  1. run perf report (TUI of course) with -v option
  2. open map browser (by pressing right arrow key for any entry)
  3. search any function (by pressing '/' key and input whatever..)
  4. return to the hist browser (by pressing 'q' or left arrow key)
  5. open annotation window for the same entry (by pressing 'a' key)

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1421234288-22758-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoperf test: Fix dwarf unwind using libunwind.
Wang Nan [Wed, 14 Jan 2015 02:36:47 +0000 (10:36 +0800)]
perf test: Fix dwarf unwind using libunwind.

Perf tool fails to unwind user stack if the event raises in a shared
object. This patch improves tests/dwarf-unwind.c to demonstrate the
problem by utilizing commonly used glibc function "bsearch". If perf is
not statically linked, the testcase will try to unwind a mixed call
trace.

By debugging libunwind I found that there is a bug in unwind-libunwind:
it always passes 0 as segbase to libunwind, cause libunwind unable to
locate debug_frame entry fir first level ip address (I add some more
debugging output into libunwind to make things clear):

               >_Uarm_dwarf_find_debug_frame: start_ip = 10be98, end_ip = 10c2a4
               >_Uarm_dwarf_find_debug_frame: found debug_frame table `/lib/libc-2.18.so': segbase=0x0, len=7, gp=0x0, table_data=0x449388
               >_Uarm_dwarf_search_unwind_table: call lookup:ip = b6cd3bcc, segbase = 0, rel_ip = b6cd3bcc
               >lookup: e->start_ip_offset = bcf18 (rel_ip = b6cd3bcc)
               >lookup: e->start_ip_offset = 6d314 (rel_ip = b6cd3bcc)
               >lookup: e->start_ip_offset = 33d0c (rel_ip = b6cd3bcc)
                ...
               >lookup: e->start_ip_offset = 15d0c (rel_ip = b6cd3bcc)
               >lookup: e->start_ip_offset = 15c40 (rel_ip = b6cd3bcc)
 >_Uarm_dwarf_search_unwind_table: IP b6cd3bcc inside range b6c12000-b6d4c000, but no explicit unwind info found
                >put_rs_cache: unmasking signals/interrupts and releasing lock
               >_Uarm_dwarf_step: returning -10
 >_Uarm_step: dwarf_step()=-10

This patch passes map->start as segbase to dwarf_find_debug_frame(), so
di will be initialized correctly.

In addition, dso and executable are different when setting segbase. This
patch first check whether the elf is executable, and pass segbase only
for shared object.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1421203007-75799-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoperf tools: Avoid build splat for syscall numbers with uclibc
Vineet Gupta [Tue, 13 Jan 2015 13:43:22 +0000 (19:13 +0530)]
perf tools: Avoid build splat for syscall numbers with uclibc

This is due to duplicated unistd inclusion (via uClibc headers + kernel headers)
Also seen on ARM uClibc based tools

   ------- ARC build ---------->8-------------

  CC       util/evlist.o
In file included from
~/arc/k.org/arch/arc/include/uapi/asm/unistd.h:25:0,
                 from util/../perf-sys.h:10,
                 from util/../perf.h:15,
                 from util/event.h:7,
                 from util/event.c:3:
~/arc/k.org/include/uapi/asm-generic/unistd.h:906:0:
warning: "__NR_fcntl64" redefined [enabled by default]
 #define __NR_fcntl64 __NR3264_fcntl
 ^
In file included from
~/arc/gnu/INSTALL_1412-arc-2014.12-rc1/arc-snps-linux-uclibc/sysroot/usr/include/sys/syscall.h:24:0,
                 from util/../perf-sys.h:6,
   ----------------->8-------------------

   ------- ARM build ---------->8-------------

  CC FPIC  plugin_scsi.o
In file included from util/../perf-sys.h:9:0,
                 from util/../perf.h:15,
                 from util/cache.h:7,
                 from perf.c:12:
~/arc/k.org/arch/arm/include/uapi/asm/unistd.h:28:0:
warning: "__NR_restart_syscall" redefined [enabled by default]
In file included from
~/buildroot/host/usr/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/sys/syscall.h:25:0,
                 from util/../perf-sys.h:6,
                 from util/../perf.h:15,
                 from util/cache.h:7,
                 from perf.c:12:
~/buildroot/host/usr/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/bits/sysnum.h:17:0:
note: this is the location of the previous definition
   ----------------->8-------------------

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1421156604-30603-4-git-send-email-vgupta@synopsys.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoperf tools: Elide strlcpy warning with uclibc
Vineet Gupta [Tue, 13 Jan 2015 13:43:21 +0000 (19:13 +0530)]
perf tools: Elide strlcpy warning with uclibc

   ----------------->8------------------
  CC       bench/sched-pipe.o
In file included from builtin-annotate.c:13:0:
util/cache.h:76:15: warning: redundant redeclaration of 'strlcpy'
[-Wredundant-decls]
 extern size_t strlcpy(char *dest, const char *src, size_t size);
               ^
In file included from util/util.h:55:0,
                 from builtin.h:4,
                 from builtin-annotate.c:8:
~/vineetg/arc/gnu/INSTALL_1412-arc-2014.12-rc1/arc-snps-linux-uclibc/sysroot/usr/include/string.h:396:15:
note: previous declaration of 'strlcpy' was here
 extern size_t strlcpy(char *__restrict dst, const char *__restrict src,
   ----------------->8------------------

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1421156604-30603-3-git-send-email-vgupta@synopsys.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoperf tools: Fix statfs.f_type data type mismatch build error with uclibc
Alexey Brodkin [Sat, 10 Jan 2015 11:10:50 +0000 (16:40 +0530)]
perf tools: Fix statfs.f_type data type mismatch build error with uclibc

ARC Linux uses the no legacy syscalls abi and corresponding uClibc headers
statfs defines f_type to be U32 which causes perf build breakage

http://git.uclibc.org/uClibc/tree/libc/sysdeps/linux/common-generic/bits/statfs.h

  ----------->8---------------
    CC       fs/fs.o
  fs/fs.c: In function 'fs__valid_mount':
  fs/fs.c:82:24: error: comparison between signed and unsigned integer
  expressions [-Werror=sign-compare]
    else if (st_fs.f_type != magic)
                          ^
  cc1: all warnings being treated as errors
  ----------->8---------------

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Cody P Schafer <dev@codyps.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Link: http://lkml.kernel.org/r/1420888254-17504-2-git-send-email-vgupta@synopsys.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agotools: Remove bitops/hweight usage of bits in tools/perf
Arnaldo Carvalho de Melo [Tue, 13 Jan 2015 13:19:12 +0000 (10:19 -0300)]
tools: Remove bitops/hweight usage of bits in tools/perf

We need to use lib/hweight.c for that, just like we do for lib/rbtree.c,
so tools need to link hweight.o. For now do it directly, but we need to
have a tools/lib/lk.a or .so that collects these goodies...

Reported-by: Jan Beulich <JBeulich@suse.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-a1e91dx3apzqw5kbdt7ut21s@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoperf machine: Fix __machine__findnew_thread() error path
Namhyung Kim [Fri, 9 Jan 2015 00:38:12 +0000 (09:38 +0900)]
perf machine: Fix __machine__findnew_thread() error path

When thread__init_map_groups() fails, a new thread should be removed
from the rbtree since it's gonna be freed.  Also update last match cache
only if the function succeeded.

Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1420763892-15535-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoperf tools: Fix building error in x86_64 when dwarf unwind is on
Namhyung Kim [Mon, 12 Jan 2015 02:20:55 +0000 (10:20 +0800)]
perf tools: Fix building error in x86_64 when dwarf unwind is on

When build with 'make ARCH=x86' and dwarf unwind is on, there is a
compiling error:

   CC       /home/wn/perf/arch/x86/util/unwind-libdw.o
   CC       /home/wn/perf/arch/x86/tests/regs_load.o
 arch/x86/tests/regs_load.S: Assembler messages:
 arch/x86/tests/regs_load.S:65: Error: operand type mismatch for `push'
 arch/x86/tests/regs_load.S:72: Error: operand type mismatch for `pop'
 make[1]: *** [/home/wn/perf/arch/x86/tests/regs_load.o] Error 1
 make[1]: INTERNAL: Exiting with 25 jobserver tokens available; should be 24!
 make: *** [all] Error 2
 ...

Which is caused by incorrectly undefine macro HAVE_ARCH_X86_64_SUPPORT.
'config/Makefile.arch' tests __x86_64__ only when 'ARCH=x86_64'.
However, when building x86_64 kernel, ARCH=x86 is valid and commonly
used. Build systems, such as yocto, uses x86_64 compiler with 'ARCH=x86'
to build x86_64 perf, which causes mismatching.

As __LP64__ is defined for x86_64 as well, we can consolidate the
__x86_64__ check to the __LP64__ check and get rid of the IS_X86_64
IMHO.

(This patch is made by Namhyung Kim when replying my v1 patch:

https://lkml.org/lkml/2015/1/7/17

I modified the code to remove dependency on RAW_ARCH:

https://lkml.org/lkml/2015/1/7/865

Namhyung Kim didn't provide his SOB in his original email. I add
mine only for my modification.)

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1421029255-23039-1-git-send-email-wangnan0@huawei.com
[ Namhyung provided his S-o-B on a followup to this patch thread on lkml ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoperf probe: Propagate error code when write(2) failed
Namhyung Kim [Sat, 10 Jan 2015 10:33:48 +0000 (19:33 +0900)]
perf probe: Propagate error code when write(2) failed

When it failed to write probe commands to the probe_event file in
debugfs, it needs to propagate the error code properly.  Current code
blindly uses the return value of the write(2) so it always uses
-1 (-EPERM) and it might confuse users.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1420886028-15135-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
9 years agoMerge tag 'char-misc-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Fri, 16 Jan 2015 19:18:08 +0000 (08:18 +1300)]
Merge tag 'char-misc-3.19-rc5' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are three small driver fixes for reported issues for 3.19-rc5.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mcb: mcb-pci: Only remap the 1st 0x200 bytes of BAR 0
  mei: add ABI documentation for fw_status exported through sysfs
  mei: clean reset bit before reset

9 years agoMerge tag 'driver-core-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 16 Jan 2015 19:16:52 +0000 (08:16 +1300)]
Merge tag 'driver-core-3.19-rc5' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core fix from Greg KH:
 "Here is one kernfs fix for a reported issue for 3.19-rc5.

  It has been in linux-next for a while"

* tag 'driver-core-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  kernfs: Fix kernfs_name_compare

9 years agoMerge tag 'tty-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Fri, 16 Jan 2015 19:15:49 +0000 (08:15 +1300)]
Merge tag 'tty-3.19-rc5' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial driver fixes from Greg KH:
 "Here are some tty and serial driver fixes for 3.19-rc5 that resolve
  some reported issues, and add a new device id to the 8250 serial port
  driver.

  All have been in linux-next with no reported problems"

* tag 'tty-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: samsung: Add the support for Exynos5433 SoC
  Revert "tty: Fix pty master poll() after slave closes v2"
  tty: Prevent hw state corruption in exclusive mode reopen
  tty: Add support for the WCH384 4S multi-IO card
  serial: fix parisc boot hang

9 years agoMerge tag 'staging-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 16 Jan 2015 19:13:45 +0000 (08:13 +1300)]
Merge tag 'staging-3.19-rc5' of git://git./linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are 6 staging driver fixes for 3.19-rc5.

  They fix some reported issues with some IIO drivers, as well as some
  issues with the vt6655 wireless driver.

  All have been in linux-next for a while"

* tag 'staging-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: vt6655: fix sparse warning: argument type
  staging: vt6655: Fix loss of distant/weak access points on channel change.
  staging: vt6655: vnt_tx_packet Fix corrupted tx packets.
  staging: vt6655: fix sparse warnings: incorrect argument type
  iio: iio: Fix iio_channel_read return if channel havn't info
  iio: ad799x: Fix ad7991/ad7995/ad7999 config setup

9 years agoMerge tag 'usb-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Fri, 16 Jan 2015 19:02:44 +0000 (08:02 +1300)]
Merge tag 'usb-3.19-rc5' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here is a bunch of USB fixes for 3.19-rc5.

  Most of these are gadget driver fixes, along with the xhci driver fix
  that we both reported having problems with, as well as some new device
  ids and other tiny fixes.

  All have been in linux-next with no problems"

* tag 'usb-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (43 commits)
  usb: dwc3: gadget: Stop TRB preparation after limit is reached
  usb: dwc3: gadget: Fix TRB preparation during SG
  usb: phy: mv-usb: fix usb_phy build errors
  usb: serial: handle -ENODEV quietly in generic_submit_read_urb
  usb: serial: silence all non-critical read errors
  USB: console: fix potential use after free
  USB: console: fix uninitialised ldisc semaphore
  usb: gadget: udc: atmel: fix possible oops when unloading module
  usb: gadget: gadgetfs: fix an oops in ep_write()
  usb: phy: Fix deferred probing
  OHCI: add a quirk for ULi M5237 blocking on reset
  uas: Add US_FL_NO_ATA_1X for 2 more Seagate disk enclosures
  uas: Do not blacklist ASM1153 disk enclosures
  usb: gadget: udc: avoid dereference before NULL check in ep_queue
  usb: host: ehci-tegra: request deferred probe when failing to get phy
  uas: disable UAS on Apricorn SATA dongles
  uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS566 with usb-id 0bc2:a013
  uas: Add US_FL_NO_ATA_1X for Seagate devices with usb-id 0bc2:a013
  xhci: Add broken-streams quirk for Fresco Logic FL1000G xhci controllers
  USB: EHCI: adjust error return code
  ...

9 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 16 Jan 2015 19:01:21 +0000 (08:01 +1300)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 - Wire up compat_sys_execveat for compat (AArch32) tasks
 - Revert 421520ba9829, as this breaks our side of the boot protocol

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: partially revert "ARM: 8167/1: extend the reserved memory for initrd to be page aligned"
  arm64: compat: wire up compat_sys_execveat

9 years agoMerge tag 'nfs-for-3.19-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Fri, 16 Jan 2015 18:59:06 +0000 (07:59 +1300)]
Merge tag 'nfs-for-3.19-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

   - Stable fix for a NFSv3/lockd race
   - Fixes for several NFSv4.1 client id trunking bugs
   - Remove an incorrect test when checking for delegated opens"

* tag 'nfs-for-3.19-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Remove incorrect check in can_open_delegated()
  NFS: Ignore transport protocol when detecting server trunking
  NFSv4/v4.1: Verify the client owner id during trunking detection
  NFSv4: Cache the NFSv4/v4.1 client owner_id in the struct nfs_client
  NFSv4.1: Fix client id trunking on Linux
  LOCKD: Fix a race when initialising nlmsvc_timeout

9 years agoMerge tag 'trace-fixes-v3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 16 Jan 2015 18:55:52 +0000 (07:55 +1300)]
Merge tag 'trace-fixes-v3.19-rc3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull ftrace fixes from Steven Rostedt:
 "This holds a few fixes to the ftrace infrastructure as well as the
  mixture of function graph tracing and kprobes.

  When jprobes and function graph tracing is enabled at the same time it
  will crash the system:

      # modprobe jprobe_example
      # echo function_graph > /sys/kernel/debug/tracing/current_tracer

  After the first fork (jprobe_example probes it), the system will
  crash.

  This is due to the way jprobes copies the stack frame and does not do
  a normal function return.  This messes up with the function graph
  tracing accounting which hijacks the return address from the stack and
  replaces it with a hook function.  It saves the return addresses in a
  separate stack to put back the correct return address when done.  But
  because the jprobe functions do not do a normal return, their stack
  addresses are not put back until the function they probe is called,
  which means that the probed function will get the return address of
  the jprobe handler instead of its own.

  The simple fix here was to disable function graph tracing while the
  jprobe handler is being called.

  While debugging this I found two minor bugs with the function graph
  tracing.

  The first was about the function graph tracer sharing its function
  hash with the function tracer (they both get filtered by the same
  input).  The changing of the set_ftrace_filter would not sync the
  function recording records after a change if the function tracer was
  disabled but the function graph tracer was enabled.  This was due to
  the update only checking one of the ops instead of the shared ops to
  see if they were enabled and should perform the sync.  This caused the
  ftrace accounting to break and a ftrace_bug() would be triggered,
  disabling ftrace until a reboot.

  The second was that the check to update records only checked one of
  the filter hashes.  It needs to test both the "filter" and "notrace"
  hashes.  The "filter" hash determines what functions to trace where as
  the "notrace" hash determines what functions not to trace (trace all
  but these).  Both hashes need to be passed to the update code to find
  out what change is being done during the update.  This also broke the
  ftrace record accounting and triggered a ftrace_bug().

  This patch set also include two more fixes that were reported
  separately from the kprobe issue.

  One was that init_ftrace_syscalls() was called twice at boot up.  This
  is not a major bug, but that call performed a rather large kmalloc
  (NR_syscalls * sizeof(*syscalls_metadata)).  The second call made the
  first one a memory leak, and wastes memory.

  The other fix is a regression caused by an update in the v3.19 merge
  window.  The moving to enable events early, moved the enabling before
  PID 1 was created.  The syscall events require setting the
  TIF_SYSCALL_TRACEPOINT for all tasks.  But for_each_process_thread()
  does not include the swapper task (PID 0), and ended up being a nop.

  A suggested fix was to add the init_task() to have its flag set, but I
  didn't really want to mess with PID 0 for this minor bug.  Instead I
  disable and re-enable events again at early_initcall() where it use to
  be enabled.  This also handles any other event that might have its own
  reg function that could break at early boot up"

* tag 'trace-fixes-v3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix enabling of syscall events on the command line
  tracing: Remove extra call to init_ftrace_syscalls()
  ftrace/jprobes/x86: Fix conflict between jprobes and function graph tracing
  ftrace: Check both notrace and filter for old hash
  ftrace: Fix updating of filters for shared global_ops filters

9 years agoarm64: partially revert "ARM: 8167/1: extend the reserved memory for initrd to be...
Catalin Marinas [Fri, 16 Jan 2015 13:56:38 +0000 (13:56 +0000)]
arm64: partially revert "ARM: 8167/1: extend the reserved memory for initrd to be page aligned"

This patch partially reverts commit 421520ba98290a73b35b7644e877a48f18e06004
(only the arm64 part). There is no guarantee that the boot-loader places other
images like dtb in a different page than initrd start/end, especially when the
kernel is built with 64KB pages. When this happens, such pages must not be
freed. The free_reserved_area() already takes care of rounding up "start" and
rounding down "end" to avoid freeing partially used pages.

Cc: <stable@vger.kernel.org> # 3.17+
Reported-by: Peter Maydell <Peter.Maydell@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
9 years agoperf/x86/intel: Fix bug for "cycles:p" and "cycles:pp" on SLM
Kan Liang [Mon, 12 Jan 2015 17:42:21 +0000 (17:42 +0000)]
perf/x86/intel: Fix bug for "cycles:p" and "cycles:pp" on SLM

cycles:p and cycles:pp do not work on SLM since commit:

   86a04461a99f ("perf/x86: Revamp PEBS event selection")

UOPS_RETIRED.ALL is not a PEBS capable event, so it should not be used
to count cycle number.

Actually SLM calls intel_pebs_aliases_core2() which uses INST_RETIRED.ANY_P
to count the number of cycles. It's a PEBS capable event. But inv and
cmask must be set to count cycles.

Considering SLM allows all events as PEBS with no flags, only
INST_RETIRED.ANY_P, inv=1, cmask=16 needs to handled specially.

Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1421084541-31639-1-git-send-email-kan.liang@intel.com
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agoperf/rapl: Fix sysfs_show() initialization for RAPL PMU
Stephane Eranian [Tue, 13 Jan 2015 22:59:53 +0000 (23:59 +0100)]
perf/rapl: Fix sysfs_show() initialization for RAPL PMU

This patch fixes a problem with the initialization of the
sysfs_show() routine for the RAPL PMU.

The current code was wrongly relying on the EVENT_ATTR_STR()
macro which uses the events_sysfs_show() function in the x86
PMU code. That function itself was relying on the x86_pmu data
structure. Yet RAPL and the core PMU (x86_pmu) have nothing to
do with each other. They should therefore not interact with
each other.

The x86_pmu structure is initialized at boot time based on
the host CPU model. When the host CPU is not supported, the
x86_pmu remains uninitialized and some of the callbacks it
contains are NULL.

The false dependency with x86_pmu could potentially cause crashes
in case the x86_pmu is not initialized while the RAPL PMU is. This
may, for instance, be the case in virtualized environments.

This patch fixes the problem by using a private sysfs_show()
routine for exporting the RAPL PMU events.

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20150113225953.GA21525@thinkpad
Cc: vincent.weaver@maine.edu
Cc: jolsa@redhat.com
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
Linus Torvalds [Fri, 16 Jan 2015 01:58:16 +0000 (14:58 +1300)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse

Pull fuse fixes from Miklos Szeredi:
 "This fixes a regression in the latest fuse update plus a fix for a
  rather theoretical memory ordering issue"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: add memory barrier to INIT
  fuse: fix LOOKUP vs INIT compat handling

9 years agoMerge tag 'fbdev-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba...
Linus Torvalds [Fri, 16 Jan 2015 01:55:47 +0000 (14:55 +1300)]
Merge tag 'fbdev-fixes-3.19' of git://git./linux/kernel/git/tomba/linux

Pull fbdev fixes from Tomi Valkeinen:
 - broadsheetfb: fix memory leak
 - simplefb: fix build failure on sparc

* tag 'fbdev-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  fbdev/broadsheetfb: fix memory leak
  simplefb: Fix build failure on Sparc

9 years agoMerge tag 'mmc-v3.19-4' of git://git.linaro.org/people/ulf.hansson/mmc
Linus Torvalds [Fri, 16 Jan 2015 01:53:07 +0000 (14:53 +1300)]
Merge tag 'mmc-v3.19-4' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC bugfix from Ulf Hansson:
 "Fix sdhci regulator regression for Qualcomm and Nvidia boards"

* tag 'mmc-v3.19-4' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: sdhci: Set SDHCI_POWER_ON with external vmmc

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Fri, 16 Jan 2015 01:29:21 +0000 (14:29 +1300)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k fixlet from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Wire up execveat

9 years agoMerge tag 'powerpc-3.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Linus Torvalds [Fri, 16 Jan 2015 01:28:01 +0000 (14:28 +1300)]
Merge tag 'powerpc-3.19-4' of git://git./linux/kernel/git/mpe/linux

Pull powerpc fixes from Michael Ellerman:
 "A few powerpc fixes"

* tag 'powerpc-3.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
  powerpc: Work around gcc bug in current_thread_info()
  cxl: Fix issues when unmapping contexts
  powernv: Fix OPAL tracepoint code

9 years agotracing: Fix enabling of syscall events on the command line
Steven Rostedt (Red Hat) [Wed, 14 Jan 2015 17:53:45 +0000 (12:53 -0500)]
tracing: Fix enabling of syscall events on the command line

Commit 5f893b2639b2 "tracing: Move enabling tracepoints to just after
rcu_init()" broke the enabling of system call events from the command
line. The reason was that the enabling of command line trace events
was moved before PID 1 started, and the syscall tracepoints require
that all tasks have the TIF_SYSCALL_TRACEPOINT flag set. But the
swapper task (pid 0) is not part of that. Since the swapper task is the
only task that is running at this early in boot, no task gets the
flag set, and the tracepoint never gets reached.

Instead of setting the swapper task flag (there should be no reason to
do that), re-enabled trace events again after the init thread (PID 1)
has been started. It requires disabling all command line events and
re-enabling them, as just enabling them again will not reset the logic
to set the TIF_SYSCALL_TRACEPOINT flag, as the syscall tracepoint will
be fooled into thinking that it was already set, and wont try setting
it again. For this reason, we must first disable it and re-enable it.

Link: http://lkml.kernel.org/r/1421188517-18312-1-git-send-email-mpe@ellerman.id.au
Link: http://lkml.kernel.org/r/20150115040506.216066449@goodmis.org
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
9 years agotracing: Remove extra call to init_ftrace_syscalls()
Steven Rostedt (Red Hat) [Wed, 14 Jan 2015 17:24:37 +0000 (12:24 -0500)]
tracing: Remove extra call to init_ftrace_syscalls()

trace_init() calls init_ftrace_syscalls() and then calls trace_event_init()
which also calls init_ftrace_syscalls(). It makes more sense to only
call it from trace_event_init().

Calling it twice wastes memory, as it allocates the syscall events twice,
and loses the first copy of it.

Link: http://lkml.kernel.org/r/54AF53BD.5070303@huawei.com
Link: http://lkml.kernel.org/r/20150115040505.930398632@goodmis.org
Reported-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
9 years agoftrace/jprobes/x86: Fix conflict between jprobes and function graph tracing
Steven Rostedt (Red Hat) [Mon, 12 Jan 2015 17:12:03 +0000 (12:12 -0500)]
ftrace/jprobes/x86: Fix conflict between jprobes and function graph tracing

If the function graph tracer traces a jprobe callback, the system will
crash. This can easily be demonstrated by compiling the jprobe
sample module that is in the kernel tree, loading it and running the
function graph tracer.

 # modprobe jprobe_example.ko
 # echo function_graph > /sys/kernel/debug/tracing/current_tracer
 # ls

The first two commands end up in a nice crash after the first fork.
(do_fork has a jprobe attached to it, so "ls" just triggers that fork)

The problem is caused by the jprobe_return() that all jprobe callbacks
must end with. The way jprobes works is that the function a jprobe
is attached to has a breakpoint placed at the start of it (or it uses
ftrace if fentry is supported). The breakpoint handler (or ftrace callback)
will copy the stack frame and change the ip address to return to the
jprobe handler instead of the function. The jprobe handler must end
with jprobe_return() which swaps the stack and does an int3 (breakpoint).
This breakpoint handler will then put back the saved stack frame,
simulate the instruction at the beginning of the function it added
a breakpoint to, and then continue on.

For function tracing to work, it hijakes the return address from the
stack frame, and replaces it with a hook function that will trace
the end of the call. This hook function will restore the return
address of the function call.

If the function tracer traces the jprobe handler, the hook function
for that handler will not be called, and its saved return address
will be used for the next function. This will result in a kernel crash.

To solve this, pause function tracing before the jprobe handler is called
and unpause it before it returns back to the function it probed.

Some other updates:

Used a variable "saved_sp" to hold kcb->jprobe_saved_sp. This makes the
code look a bit cleaner and easier to understand (various tries to fix
this bug required this change).

Note, if fentry is being used, jprobes will change the ip address before
the function graph tracer runs and it will not be able to trace the
function that the jprobe is probing.

Link: http://lkml.kernel.org/r/20150114154329.552437962@goodmis.org
Cc: stable@vger.kernel.org # 2.6.30+
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
9 years agoftrace: Check both notrace and filter for old hash
Steven Rostedt (Red Hat) [Tue, 13 Jan 2015 19:03:38 +0000 (14:03 -0500)]
ftrace: Check both notrace and filter for old hash

Using just the filter for checking for trampolines or regs is not enough
when updating the code against the records that represent all functions.
Both the filter hash and the notrace hash need to be checked.

To trigger this bug (using trace-cmd and perf):

 # perf probe -a do_fork
 # trace-cmd start -B foo -e probe
 # trace-cmd record -p function_graph -n do_fork sleep 1

The trace-cmd record at the end clears the filter before it disables
function_graph tracing and then that causes the accounting of the
ftrace function records to become incorrect and causes ftrace to bug.

Link: http://lkml.kernel.org/r/20150114154329.358378039@goodmis.org
Cc: stable@vger.kernel.org
[ still need to switch old_hash_ops to old_ops_hash ]
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
9 years agoftrace: Fix updating of filters for shared global_ops filters
Steven Rostedt (Red Hat) [Tue, 13 Jan 2015 16:20:43 +0000 (11:20 -0500)]
ftrace: Fix updating of filters for shared global_ops filters

As the set_ftrace_filter affects both the function tracer as well as the
function graph tracer, the ops that represent each have a shared
ftrace_ops_hash structure. This allows both to be updated when the filter
files are updated.

But if function graph is enabled and the global_ops (function tracing) ops
is not, then it is possible that the filter could be changed without the
update happening for the function graph ops. This will cause the changes
to not take place and may even cause a ftrace_bug to occur as it could mess
with the trampoline accounting.

The solution is to check if the ops uses the shared global_ops filter and
if the ops itself is not enabled, to check if there's another ops that is
enabled and also shares the global_ops filter. In that case, the
modification still needs to be executed.

Link: http://lkml.kernel.org/r/20150114154329.055980438@goodmis.org
Cc: stable@vger.kernel.org # 3.17+
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
9 years agoMerge branch 'thermal-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang...
Linus Torvalds [Thu, 15 Jan 2015 06:20:26 +0000 (19:20 +1300)]
Merge branch 'thermal-soc' of git://git./linux/kernel/git/rzhang/linux

Pull thermal fixes from Zhang Rui:
 "Specifics:

   - bogus type qualifier fix in OF thermal code.
   - Minor fixes on imx and rcar thermal drivers.
   - Update TI SoC thermal maintainer entry.
   - Updated documentation of OF cpufreq cooling register"

* 'thermal-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: rcar: Spelling/grammar: s/drier use .../driver uses ...s/
  thermal: rcar: change type of ctemp in rcar_thermal_update_temp()
  thermal: rcar: fix ENR register value
  Documentation: thermal: document of_cpufreq_cooling_register()
  Thermal: imx: add clk disable/enable for suspend/resume
  MAINTAINERS: update ti-soc-thermal status
  MAINTAINERS: Add linux-omap to list of reviewers for TI Thermal
  thermal: of: Remove bogus type qualifier for of_thermal_get_trip_points()

9 years agoMerge tag 'fixes-for-v3.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Thu, 15 Jan 2015 00:27:23 +0000 (16:27 -0800)]
Merge tag 'fixes-for-v3.19-rc6' of git://git./linux/kernel/git/balbi/usb into usb-linus

Felipe writes:

usb: fixes for v3.19-rc6

The final set of fixes for v3.19. Two of the fixes are
related to dwc3 scatter/gather implementation when we have
more requests queued than available TRBs, while the other
is a build fix for mv-usb PHY.

Signed-off-by: Felipe Balbi <balbi@ti.com>
9 years agoMerge tag 'usb-serial-3.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Wed, 14 Jan 2015 23:39:23 +0000 (15:39 -0800)]
Merge tag 'usb-serial-3.19-rc5' of git://git./linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v3.18-rc5

Here are a few fixes for reported problems including a possible
null-deref on probe with keyspan, a misbehaving modem, and a couple of
issues with the USB console.

Some new device IDs are also added.

Signed-off-by: Johan Hovold <johan@kernel.org>
9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 14 Jan 2015 22:17:37 +0000 (11:17 +1300)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Don't use uninitialized data in IPVS, from Dan Carpenter.

 2) conntrack race fixes from Pablo Neira Ayuso.

 3) Fix TX hangs with i40e, from Jesse Brandeburg.

 4) Fix budget return from poll calls in dnet and alx, from Eric
    Dumazet.

 5) Fix bugus "if (unlikely(x) < 0)" test in AF_PACKET, from Christoph
    Jaeger.

 6) Fix bug introduced by conversion to list_head in TIPC retransmit
    code, from Jon Paul Maloy.

 7) Don't use GFP_NOIO under spinlock in USB kaweth driver, from Alexey
    Khoroshilov.

 8) Fix bridge build with INET disabled, from Arnd Bergmann.

 9) Fix netlink array overrun for PROBE attributes in openvswitch, from
    Thomas Graf.

10) Don't hold spinlock across synchronize_irq() in tg3 driver, from
    Prashant Sreedharan.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
  tg3: Release tp->lock before invoking synchronize_irq()
  tg3: tg3_reset_task() needs to use rtnl_lock to synchronize
  tg3: tg3_timer() should grab tp->lock before checking for tp->irq_sync
  team: avoid possible underflow of count_pending value for notify_peers and mcast_rejoin
  openvswitch: packet messages need their own probe attribtue
  i40e: adds FCoE configure option
  cxgb4vf: Fix queue allocation for 40G adapter
  netdevice: Add missing parentheses in macro
  bridge: only provide proxy ARP when CONFIG_INET is enabled
  neighbour: fix base_reachable_time(_ms) not effective immediatly when changed
  net: fec: fix MDIO bus assignement for dual fec SoC's
  xen-netfront: use different locks for Rx and Tx stats
  drivers: net: cpsw: fix multicast flush in dual emac mode
  cxgb4vf: Initialize mdio_addr before using it
  net: Corrected the comment describing the ndo operations to reflect the actual prototype for couple of operations
  usb/kaweth: use GFP_ATOMIC under spin_lock in usb_start_wait_urb()
  MAINTAINERS: add me as ibmveth maintainer
  tipc: fix bug in broadcast retransmit code
  update ip-sysctl.txt documentation (v2)
  net/at91_ether: prepare and unprepare clock
  ...

9 years agoMerge branch 'tg3-net'
David S. Miller [Wed, 14 Jan 2015 22:05:55 +0000 (17:05 -0500)]
Merge branch 'tg3-net'

Prashant Sreedharan says:

====================
tg3: synchronize_irq() should be called without taking locks

v2: Added Reported-by, Tested-by fields and reference to the thread that
    reported the problem

This series addresses the problem reported by Peter Hurley in mail thread
https://lkml.org/lkml/2015/1/12/1082
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotg3: Release tp->lock before invoking synchronize_irq()
Prashant Sreedharan [Wed, 14 Jan 2015 19:34:44 +0000 (11:34 -0800)]
tg3: Release tp->lock before invoking synchronize_irq()

synchronize_irq() can sleep waiting, for pending IRQ handlers so driver
should release the tp->lock spin lock before invoking synchronize_irq()

Reported-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotg3: tg3_reset_task() needs to use rtnl_lock to synchronize
Prashant Sreedharan [Wed, 14 Jan 2015 19:34:17 +0000 (11:34 -0800)]
tg3: tg3_reset_task() needs to use rtnl_lock to synchronize

Currently tg3_reset_task() uses only tp->lock for synchronizing with code
paths like tg3_open() etc. But since tp->lock is released before doing
synchronize_irq(), rtnl_lock should be taken in tg3_reset_task() to
synchronize it with other code paths.

Reported-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>