Arnaldo Carvalho de Melo [Mon, 21 Jun 2010 15:44:42 +0000 (12:44 -0300)]
perf ui: Introduce routine ui_browser__is_current_entry
Will be used in more places in the new tree widget.
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tom Zanussi [Fri, 18 Jun 2010 04:40:06 +0000 (23:40 -0500)]
perf scripts perl: Makefile fix
Fix a typo introduced by recent Makefile changes, in
f9af3a4. Without it, Perl
scripting support won't get compiled in.
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <
1276836006.7762.15.camel@tropicana>
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Robert Schöne [Mon, 14 Jun 2010 11:37:20 +0000 (13:37 +0200)]
x86, perf: Add power_end event to process_*.c cpu_idle routine
Systems using the idle thread from process_32.c and process_64.c
do not generate power_end events which could be traced using
perf. This patch adds the event generation for such systems.
Signed-off-by: Robert Schoene <robert.schoene@tu-dresden.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
1276515440.5441.45.camel@localhost>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Fri, 18 Jun 2010 08:53:12 +0000 (10:53 +0200)]
Merge commit 'v2.6.35-rc3' into perf/core
Merge reason: Go from -rc1 base to -rc3 base, merge in fixes.
Andy Isaacson [Sat, 12 Jun 2010 03:36:15 +0000 (20:36 -0700)]
perf session: fix error message on failure to open perf.data
If we cannot open our data file, print strerror(errno) for a more
comprehensible error message; and only suggest 'perf record' on ENOENT.
In particular, this fixes the nonsensical advice when:
% sudo perf record sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.009 MB perf.data (~381 samples) ]
% perf trace
failed to open file: perf.data (try 'perf record' first)
%
Cc: Ingo Molnar <mingo@elte.hu>
LPU-Reference: <
20100612033615.GA24731@hexapodia.org>
Signed-off-by: Andy Isaacson <adi@hexapodia.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Andy Isaacson [Sat, 12 Jun 2010 02:44:04 +0000 (19:44 -0700)]
perf debug: fix hex dump partial final line
The loop counter math in trace_event was much more complicated than
necessary, resulting in incorrectly decoding the human-readable
portion of the partial last line of hexdump in "perf trace -D" output:
. 0020: 00 00 00 00 00 00 00 00 2f 73 62 69 6e 2f 69 6e ......../sbin/i
. 0030: 69 74 00 00 00 00 00 00 /sbin/i
With this fixed (and simpler!) code, we get the correct output:
. 0020: 00 00 00 00 00 00 00 00 2f 73 62 69 6e 2f 69 6e ......../sbin/in
. 0030: 69 74 00 00 00 00 00 00 it......
Cc: Ingo Molnar <mingo@elte.hu>
LPU-Reference: <
20100612024404.GA24469@hexapodia.org>
Signed-off-by: Andy Isaacson <adi@hexapodia.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Chase Douglas [Mon, 14 Jun 2010 19:26:30 +0000 (15:26 -0400)]
perf probe: Add kernel source path option
The probe plugin requires access to the source code for some operations. The
source code must be in the exact same location as specified by the DWARF tags,
but sometimes the location is an absolute path that cannot be replicated by a
normal user. This change adds the -s|--source option to allow the user to
specify the root of the kernel source tree.
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
LKML-Reference: <
1276543590-10486-1-git-send-email-chase.douglas@canonical.com>
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Kirill Smelkov [Mon, 14 Jun 2010 12:00:47 +0000 (16:00 +0400)]
perf tools: .gitignore += config.make config.make.autogen
These are local-configuration files and should be ignored.
LKML-Reference: <
1276516847-25817-1-git-send-email-kirr@landau.phys.spbu.ru>
Signed-off-by: Kirill Smelkov <kirr@landau.phys.spbu.ru>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Stephane Eranian [Thu, 17 Jun 2010 09:39:01 +0000 (11:39 +0200)]
perf record: Add option to avoid updating buildid cache
There are situations where there is enough information in the perf.data
to process the samples. Updating the buildid cache may add unecessary
overhead in terms of disk space and time (copying large elf images).
A persistent option to do this already exists via the perfconfig file,
simply do:
[buildid]
dir = /dev/null
This patch provides a way to suppress builid cache updates on a per-run
basis. It addds a new option, -N, to perf record. Buildids are still
generated in the perf.data file.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
4c19ef89.
93ecd80a.40dc.
fffff8e9@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Eric B Munson [Mon, 14 Jun 2010 13:56:33 +0000 (14:56 +0100)]
perf symbols: Function descriptor symbol lookup
Currently symbol resolution does not work for 64-bit programs on architectures
that use function descriptors such as ppc64.
The problem is that a symbol doesn't point to a text address, it points to a
data area that contains (amongst other things) a pointer to the text address.
We look for a section called ".opd" which is the function descriptor area. To
create the full symbol table, when we see a symbol in the function descriptor
section we load the first pointer and use that as the text address.
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
1276523793-15422-1-git-send-email-ebmunson@us.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Eric B Munson <ebmunson@us.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Stephane Eranian [Wed, 16 Jun 2010 18:59:01 +0000 (20:59 +0200)]
perf record: Avoid synthesizing mmap() for all processes in per-thread mode
A bug was introduced by commit
c45c6ea2e5c57960dc67e00294c2b78e9540c007.
Perf record was scanning /proc/PID to create synthetic PERF_RECOR_MMAP
entries even though it was running in per-thread mode. There was a bogus
check to select what mmaps to synthesize. We only need all processes in
system-wide mode.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <
4c192107.
4f1ee30a.4316.
fffff98e@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linus Torvalds [Sat, 12 Jun 2010 02:14:04 +0000 (19:14 -0700)]
Linux 2.6.35-rc3
Linus Torvalds [Fri, 11 Jun 2010 21:20:03 +0000 (14:20 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
wimax/i2400m: fix missing endian correction read in fw loader
net8139: fix a race at the end of NAPI
pktgen: Fix accuracy of inter-packet delay.
pkt_sched: gen_estimator: add a new lock
net: deliver skbs on inactive slaves to exact matches
ipv6: fix ICMP6_MIB_OUTERRORS
r8169: fix mdio_read and update mdio_write according to hw specs
gianfar: Revive the driver for eTSEC devices (disable timestamping)
caif: fix a couple range checks
phylib: Add support for the LXT973 phy.
net: Print num_rx_queues imbalance warning only when there are allocated queues
Linus Torvalds [Fri, 11 Jun 2010 21:19:45 +0000 (14:19 -0700)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
PM / x86: Save/restore MISC_ENABLE register
Linus Torvalds [Fri, 11 Jun 2010 21:18:47 +0000 (14:18 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/btrfs-unstable
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: The file argument for fsync() is never null
Btrfs: handle ERR_PTR from posix_acl_from_xattr()
Btrfs: avoid BUG when dropping root and reference in same transaction
Btrfs: prohibit a operation of changing acl's mask when noacl mount option used
Btrfs: should add a permission check for setfacl
Btrfs: btrfs_lookup_dir_item() can return ERR_PTR
Btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs
Btrfs: unwind after btrfs_start_transaction() errors
Btrfs: btrfs_iget() returns ERR_PTR
Btrfs: handle kzalloc() failure in open_ctree()
Btrfs: handle error returns from btrfs_lookup_dir_item()
Btrfs: Fix BUG_ON for fs converted from extN
Btrfs: Fix null dereference in relocation.c
Btrfs: fix remap_file_pages error
Btrfs: uninitialized data is check_path_shared()
Btrfs: fix fallocate regression
Btrfs: fix loop device on top of btrfs
Linus Torvalds [Fri, 11 Jun 2010 21:15:44 +0000 (14:15 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: clear bridge resource range if BIOS assigned bad one
PCI: hotplug/cpqphp, fix NULL dereference
Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/"
PCI: change resource collision messages from KERN_ERR to KERN_INFO
Yinghai Lu [Thu, 3 Jun 2010 20:43:03 +0000 (13:43 -0700)]
PCI: clear bridge resource range if BIOS assigned bad one
Yannick found that video does not work with 2.6.34. The cause of this
bug was that the BIOS had assigned the wrong range to the PCI bridge
above the video device. Before 2.6.34 the kernel would have shrunk
the size of the bridge window, but since
d65245c PCI: don't shrink bridge resources
the kernel will avoid shrinking BIOS ranges.
So zero out the old range if we fail to claim it at boot time; this will
cause us to allocate a new range at startup, restoring the 2.6.34
behavior.
Fixes regression https://bugzilla.kernel.org/show_bug.cgi?id=16009.
Reported-by: Yannick <yannick.roehlly@free.fr>
Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Jiri Slaby [Wed, 9 Jun 2010 20:31:13 +0000 (22:31 +0200)]
PCI: hotplug/cpqphp, fix NULL dereference
There are devices out there which are PCI Hot-plug controllers with
compaq PCI IDs, but are not bridges, hence have pdev->subordinate
NULL. But cpqphp expects the pointer to be non-NULL.
Add a check to the probe function to avoid oopses like:
BUG: unable to handle kernel NULL pointer dereference at
00000050
IP: [<
f82e3c41>] cpqhpc_probe+0x951/0x1120 [cpqphp]
*pdpt =
0000000033779001 *pde =
0000000000000000
...
The device here was:
00:0b.0 PCI Hot-plug controller [0804]: Compaq Computer Corporation PCI Hotplug Controller [0e11:a0f7] (rev 11)
Subsystem: Compaq Computer Corporation Device [0e11:a2f8]
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Jesse Barnes [Fri, 11 Jun 2010 20:08:37 +0000 (13:08 -0700)]
Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/"
This reverts commit
75568f8094eb0333e9c2109b23cbc8b82d318a3c.
Since they're just a convenience anyway, remove these symlinks since
they're causing duplicate filename errors in the wild.
Acked-by: Alex Chiang <achiang@canonical.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Bjorn Helgaas [Thu, 3 Jun 2010 19:47:18 +0000 (13:47 -0600)]
PCI: change resource collision messages from KERN_ERR to KERN_INFO
We can often deal with PCI resource issues by moving devices around. In
that case, there's no point in alarming the user with messages like these.
There are many bug reports where the message itself is the only problem,
e.g., https://bugs.launchpad.net/ubuntu/+source/linux/+bug/413419 .
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Dan Carpenter [Sat, 29 May 2010 09:49:07 +0000 (09:49 +0000)]
Btrfs: The file argument for fsync() is never null
The "file" argument for fsync is never null so we can remove this check.
What drew my attention here is that
7ea8085910e: "drop unused dentry
argument to ->fsync" introduced an unconditional dereference at the
start of the function and that generated a smatch warning.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Dan Carpenter [Sat, 29 May 2010 09:48:35 +0000 (09:48 +0000)]
Btrfs: handle ERR_PTR from posix_acl_from_xattr()
posix_acl_from_xattr() returns both ERR_PTRs and null, but it's OK to
pass null values to set_cached_acl()
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Sage Weil [Mon, 17 May 2010 17:15:27 +0000 (17:15 +0000)]
Btrfs: avoid BUG when dropping root and reference in same transaction
If btrfs_ioctl_snap_destroy() deletes a snapshot but finishes
with end_transaction(), the cleaner kthread may come in and
drop the root in the same transaction. If that's the case, the
root's refs still == 1 in the tree when btrfs_del_root() deletes
the item, because commit_fs_roots() hasn't updated it yet (that
happens during the commit).
This wasn't a problem before only because
btrfs_ioctl_snap_destroy() would commit the transaction before dropping
the dentry reference, so the dead root wouldn't get queued up until
after the fs root item was updated in the btree.
Since it is not an error to drop the root reference and the root in the
same transaction, just drop the BUG_ON() in btrfs_del_root().
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Shi Weihua [Tue, 18 May 2010 00:51:54 +0000 (00:51 +0000)]
Btrfs: prohibit a operation of changing acl's mask when noacl mount option used
when used Posix File System Test Suite(pjd-fstest) to test btrfs,
some cases about setfacl failed when noacl mount option used.
I simplified used commands in pjd-fstest, and the following steps
can reproduce it.
------------------------
# cd btrfs-part/
# mkdir aaa
# setfacl -m m::rw aaa <- successed, but not expected by pjd-fstest.
------------------------
I checked ext3, a warning message occured, like as:
setfacl: aaa/: Operation not supported
Certainly, it's expected by pjd-fstest.
So, i compared acl.c of btrfs and ext3. Based on that, a patch created.
Fortunately, it works.
Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Shi Weihua [Tue, 18 May 2010 00:50:32 +0000 (00:50 +0000)]
Btrfs: should add a permission check for setfacl
On btrfs, do the following
------------------
# su user1
# cd btrfs-part/
# touch aaa
# getfacl aaa
# file: aaa
# owner: user1
# group: user1
user::rw-
group::rw-
other::r--
# su user2
# cd btrfs-part/
# setfacl -m u::rwx aaa
# getfacl aaa
# file: aaa
# owner: user1
# group: user1
user::rwx <- successed to setfacl
group::rw-
other::r--
------------------
but we should prohibit it that user2 changing user1's acl.
In fact, on ext3 and other fs, a message occurs:
setfacl: aaa: Operation not permitted
This patch fixed it.
Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Dan Carpenter [Sat, 29 May 2010 09:47:24 +0000 (09:47 +0000)]
Btrfs: btrfs_lookup_dir_item() can return ERR_PTR
btrfs_lookup_dir_item() can return either ERR_PTRs or null.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Dan Carpenter [Sat, 29 May 2010 09:44:10 +0000 (09:44 +0000)]
Btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs
btrfs_read_fs_root_no_name() returns ERR_PTRs on error so I added a
check for that. It's not clear to me if it can also return NULL
pointers or not so I left the original NULL pointer check as is.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Dan Carpenter [Sat, 29 May 2010 09:46:47 +0000 (09:46 +0000)]
Btrfs: unwind after btrfs_start_transaction() errors
This was added by
a22285a6a3: "Btrfs: Integrate metadata reservation
with start_transaction". If we goto out here then we skip all the
unwinding and there are locks still held etc.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Dan Carpenter [Sat, 29 May 2010 09:42:19 +0000 (09:42 +0000)]
Btrfs: btrfs_iget() returns ERR_PTR
btrfs_iget() returns an ERR_PTR() on failure and not null.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Dan Carpenter [Sat, 29 May 2010 09:43:07 +0000 (09:43 +0000)]
Btrfs: handle kzalloc() failure in open_ctree()
Unwind and return -ENOMEM if the allocation fails here.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Dan Carpenter [Sat, 29 May 2010 09:40:57 +0000 (09:40 +0000)]
Btrfs: handle error returns from btrfs_lookup_dir_item()
If btrfs_lookup_dir_item() fails, we should can just let the mount fail
with an error.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan, Zheng [Mon, 31 May 2010 09:04:46 +0000 (09:04 +0000)]
Btrfs: Fix BUG_ON for fs converted from extN
Tree blocks can live in data block groups in FS converted from extN.
So it's easy to trigger the BUG_ON.
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Yan, Zheng [Mon, 31 May 2010 08:58:47 +0000 (08:58 +0000)]
Btrfs: Fix null dereference in relocation.c
Fix a potential null dereference in relocation.c
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Acked-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
David S. Miller [Fri, 11 Jun 2010 19:38:23 +0000 (12:38 -0700)]
Merge branch 'wimax-2.6.35.y' of git://git./linux/kernel/git/inaky/wimax
Inaky Perez-Gonzalez [Fri, 11 Jun 2010 18:51:20 +0000 (11:51 -0700)]
wimax/i2400m: fix missing endian correction read in fw loader
i2400m_fw_hdr_check() was accessing hardware field
bcf_hdr->module_type (little endian 32) without converting to host
byte sex.
Reported-by: Данилин Михаил <mdanilin@nsg.net.ru>
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Linus Torvalds [Fri, 11 Jun 2010 16:55:50 +0000 (09:55 -0700)]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild-2.6
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
kbuild: Create output directory in Makefile.modbuiltin
kbuild: Generate modules.builtin in make modules
Linus Torvalds [Fri, 11 Jun 2010 16:55:21 +0000 (09:55 -0700)]
Merge branch 'urgent' of git://git./linux/kernel/git/brodo/pcmcia-2.6
* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
pcmcia: avoid validate_cis failure on CIS override
pcmcia: dev_node removal bugfix
pcmcia: yenta_socket.c Remove extra #ifdef CONFIG_YENTA_TI
pcmcia: only keep saved I365_CSCINT flag if there is no PCI irq
Linus Torvalds [Fri, 11 Jun 2010 16:52:23 +0000 (09:52 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: try to send partial cap release on cap message on missing inode
ceph: release cap on import if we don't have the inode
ceph: fix misleading/incorrect debug message
ceph: fix atomic64_t initialization on ia64
ceph: fix lease revocation when seq doesn't match
ceph: fix f_namelen reported by statfs
ceph: fix memory leak in statfs
ceph: fix d_subdirs ordering problem
Miao Xie [Thu, 20 May 2010 07:21:50 +0000 (07:21 +0000)]
Btrfs: fix remap_file_pages error
when we use remap_file_pages() to remap a file, remap_file_pages always return
error. It is because btrfs didn't set VM_CAN_NONLINEAR for vma.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Dan Carpenter [Tue, 1 Jun 2010 08:23:11 +0000 (08:23 +0000)]
Btrfs: uninitialized data is check_path_shared()
refs can be used with uninitialized data if btrfs_lookup_extent_info()
fails on the first pass through the loop. In the original code if that
happens then check_path_shared() probably returns 1, this patch
changes it to return 1 for safety.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Josef Bacik [Mon, 7 Jun 2010 18:26:37 +0000 (18:26 +0000)]
Btrfs: fix fallocate regression
Seems that when btrfs_fallocate was converted to use the new ENOSPC stuff we
dropped passing the mode to the function that actually does the preallocation.
This breaks anybody who wants to use FALLOC_FL_KEEP_SIZE. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Miao Xie [Mon, 7 Jun 2010 03:38:51 +0000 (03:38 +0000)]
Btrfs: fix loop device on top of btrfs
We cannot use the loop device which has been connected to a file in the btrf
The reproduce steps is following:
# dd if=/dev/zero of=vdev0 bs=1M count=1024
# losetup /dev/loop0 vdev0
# mkfs.btrfs /dev/loop0
...
failed to zero device start -5
The reason is that the btrfs don't implement either ->write_begin or ->write
the VFS API, so we fix it by setting ->write to do_sync_write().
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Figo.zhang [Mon, 7 Jun 2010 21:13:22 +0000 (21:13 +0000)]
net8139: fix a race at the end of NAPI
fix a race at the end of NAPI complete processing, it had
better do __napi_complete() first before re-enable interrupt.
Signed-off-by:Figo.zhang <figo1802@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Turull [Fri, 11 Jun 2010 06:08:11 +0000 (23:08 -0700)]
pktgen: Fix accuracy of inter-packet delay.
This patch correct a bug in the delay of pktgen.
It makes sure the inter-packet interval is accurate.
Signed-off-by: Daniel Turull <daniel.turull@gmail.com>
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 8 Jun 2010 23:39:10 +0000 (23:39 +0000)]
pkt_sched: gen_estimator: add a new lock
gen_kill_estimator() / gen_new_estimator() is not always called with
RTNL held.
net/netfilter/xt_RATEEST.c is one user of these API that do not hold
RTNL, so random corruptions can occur between "tc" and "iptables".
Add a new fine grained lock instead of trying to use RTNL in netfilter.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
John Fastabend [Thu, 3 Jun 2010 09:30:11 +0000 (09:30 +0000)]
net: deliver skbs on inactive slaves to exact matches
Currently, the accelerated receive path for VLAN's will
drop packets if the real device is an inactive slave and
is not one of the special pkts tested for in
skb_bond_should_drop(). This behavior is different then
the non-accelerated path and for pkts over a bonded vlan.
For example,
vlanx -> bond0 -> ethx
will be dropped in the vlan path and not delivered to any
packet handlers at all. However,
bond0 -> vlanx -> ethx
and
bond0 -> ethx
will be delivered to handlers that match the exact dev,
because the VLAN path checks the real_dev which is not a
slave and netif_recv_skb() doesn't drop frames but only
delivers them to exact matches.
This patch adds a sk_buff flag which is used for tagging
skbs that would previously been dropped and allows the
skb to continue to skb_netif_recv(). Here we add
logic to check for the deliver_no_wcard flag and if it
is set only deliver to handlers that match exactly. This
makes both paths above consistent and gives pkt handlers
a way to identify skbs that come from inactive slaves.
Without this patch in some configurations skbs will be
delivered to handlers with exact matches and in others
be dropped out right in the vlan path.
I have tested the following 4 configurations in failover modes
and load balancing modes.
# bond0 -> ethx
# vlanx -> bond0 -> ethx
# bond0 -> vlanx -> ethx
# bond0 -> ethx
|
vlanx -> --
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sage Weil [Wed, 9 Jun 2010 23:52:04 +0000 (16:52 -0700)]
ceph: try to send partial cap release on cap message on missing inode
If we have enough memory to allocate a new cap release message, do so, so
that we can send a partial release message immediately. This keeps us from
making the MDS wait when the cap release it needs is in a partially full
release message.
If we fail because of ENOMEM, oh well, they'll just have to wait a bit
longer.
Signed-off-by: Sage Weil <sage@newdream.net>
Sage Weil [Wed, 9 Jun 2010 23:47:10 +0000 (16:47 -0700)]
ceph: release cap on import if we don't have the inode
If we get an IMPORT that give us a cap, but we don't have the inode, queue
a release (and try to send it immediately) so that the MDS doesn't get
stuck waiting for us.
Signed-off-by: Sage Weil <sage@newdream.net>
Sage Weil [Thu, 10 Jun 2010 20:21:20 +0000 (13:21 -0700)]
ceph: fix misleading/incorrect debug message
Nothing is released here: the caps message is simply ignored in this case.
Signed-off-by: Sage Weil <sage@newdream.net>
Jeff Mahoney [Thu, 10 Jun 2010 15:13:58 +0000 (11:13 -0400)]
ceph: fix atomic64_t initialization on ia64
bdi_seq is an atomic_long_t but we're using ATOMIC_INIT, which causes
build failures on ia64. This patch fixes it to use ATOMIC_LONG_INIT.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Catalin Marinas [Thu, 10 Jun 2010 16:02:12 +0000 (17:02 +0100)]
sata_sil24: Use memory barriers before issuing commands
The data in the cmd_block buffers may reach the main memory after the
writel() to the device ports. This patch introduces two calls to wmb()
to ensure the relative ordering.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Colin Tuckley <colin.tuckley@arm.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Dan Carpenter [Wed, 9 Jun 2010 12:01:54 +0000 (14:01 +0200)]
sata_sil24: memset() overflow
cb->atapi.cdb is an array of 16 u8 elements. The call too memset()
would set the first part of the sge array to zero as well. It's not
a packed struct.
This one has been around for five years. I found it with Smatch. I
think the reason no one has seen it before is because we normally call
sil24_fill_sg() and that overwrites sge with proper information?
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Linus Torvalds [Thu, 10 Jun 2010 17:53:14 +0000 (10:53 -0700)]
Merge branch 'kvm-updates/2.6.35' of git://git./virt/kvm/kvm
* 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: read apic->irr with ioapic lock held
KVM: ia64: Add missing spin_unlock in kvm_arch_hardware_enable()
KVM: Fix order passed to iommu_unmap
KVM: MMU: Remove user access when allowing kernel access to gpte.w=0 page
KVM: MMU: invalidate and flush on spte small->large page size change
KVM: SVM: Implement workaround for Erratum 383
KVM: SVM: Handle MCEs early in the vmexit process
KVM: powerpc: fix init/exit annotation
Marcelo Tosatti [Wed, 2 Jun 2010 14:26:26 +0000 (11:26 -0300)]
KVM: read apic->irr with ioapic lock held
Read ioapic->irr inside ioapic->lock protected section.
KVM-Stable-Tag
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Linus Torvalds [Thu, 10 Jun 2010 17:26:42 +0000 (10:26 -0700)]
Merge branch 'for-linus2' of git://git.kernel.dk/linux-2.6-block
* 'for-linus2' of git://git.kernel.dk/linux-2.6-block:
pipe: fix check in "set size" fcntl
pipe: fix pipe buffer resizing
block: remove duplicate BUG_ON() in bd_finish_claiming()
block: bd_start_claiming cleanup
block: bd_start_claiming fix module refcount
Miklos Szeredi [Wed, 9 Jun 2010 07:27:57 +0000 (09:27 +0200)]
pipe: fix check in "set size" fcntl
As it stands this check compares the number of pages to the page size.
This makes no sense and makes the fcntl fail in almost any sane case.
Fix it by checking if nr_pages is not zero (it can become zero only if
arg is too big and round_pipe_size() overflows).
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Miklos Szeredi [Tue, 8 Jun 2010 14:28:45 +0000 (16:28 +0200)]
pipe: fix pipe buffer resizing
pipe_set_size() needs to copy pipe bufs from the old circular buffer
to the new.
The current code gets this wrong in multiple ways, resulting in oops.
Test program is available here:
http://www.kernel.org/pub/linux/kernel/people/mszeredi/piperesize/
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Jens Axboe [Mon, 7 Jun 2010 18:17:38 +0000 (20:17 +0200)]
block: remove duplicate BUG_ON() in bd_finish_claiming()
We do the same BUG_ON() just a line later when calling into
__bd_abort_claiming().
Reported-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Nick Piggin [Tue, 25 May 2010 15:51:19 +0000 (01:51 +1000)]
block: bd_start_claiming cleanup
I don't like the subtle multi-context code in bd_claim (ie. detects where it
has been called based on bd_claiming). It seems clearer to just require a new
function to finish a 2-part claim.
Also improve commentary in bd_start_claiming as to how it should
be used.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Nick Piggin [Tue, 25 May 2010 15:50:21 +0000 (01:50 +1000)]
block: bd_start_claiming fix module refcount
bd_start_claiming has an unbalanced module_put introduced in
6b4517a79.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Linus Torvalds [Thu, 10 Jun 2010 16:34:15 +0000 (09:34 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: sound/spi: patch for the unuseful variable removal
ALSA: hda - Add SSID table for iMac7,1.
ALSA: hda - Add SSID table for MacBookAir1,1
ALSA: hda - Add SSID table for MacBookAir2,1
ALSA: atmel: set "channel A event" output to debug
Linus Torvalds [Thu, 10 Jun 2010 16:30:09 +0000 (09:30 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
tracing: Fix null pointer deref with SEND_SIG_FORCED
perf: Fix signed comparison in perf_adjust_period()
powerpc/oprofile: fix potential buffer overrun in op_model_cell.c
perf symbols: Set the DSO long name when using symbol_conf.vmlinux_name
Linus Torvalds [Thu, 10 Jun 2010 14:35:41 +0000 (07:35 -0700)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 6164/1: Add kto and kfrom to input operands list.
ARM: 6166/1: Proper prefetch abort handling on pre-ARMv6
ARM: 6165/1: trap overflows on highmem pages from kmap_atomic when debugging
ARM: 6152/1: ux500 make it possible to disable localtimers
[ARM] pxa/spitz: Correctly register WM8750
[ARM] pxa/palmtc: storage class should be before const qualifier
ARM: 6146/1: sa1111: Prevent deadlock in resume path
ARM: 6145/1: ux500 MTU clockrate correction
ARM: 6144/1: TCM memory bug freeing bug
ARM: VFP: Fix vfp_put_double() for d16-d31
Michal Marek [Thu, 10 Jun 2010 10:23:08 +0000 (12:23 +0200)]
kbuild: Create output directory in Makefile.modbuiltin
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Takashi Iwai [Thu, 10 Jun 2010 09:08:53 +0000 (11:08 +0200)]
Merge branch 'fix/misc' into for-linus
Eric Dumazet [Mon, 7 Jun 2010 22:24:44 +0000 (22:24 +0000)]
ipv6: fix ICMP6_MIB_OUTERRORS
In commit
1f8438a85366 (icmp: Account for ICMP out errors), I did a typo
on IPV6 side, using ICMP6_MIB_OUTMSGS instead of ICMP6_MIB_OUTERRORS
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Timo Teräs [Thu, 10 Jun 2010 00:31:48 +0000 (17:31 -0700)]
r8169: fix mdio_read and update mdio_write according to hw specs
Realtek confirmed that a 20us delay is needed after mdio_read and
mdio_write operations. Reduce the delay in mdio_write, and add it
to mdio_read too. Also add a comment that the 20us is from hw specs.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 9 Jun 2010 23:28:25 +0000 (16:28 -0700)]
Merge branch 'num_rx_queues' of git://kernel.ubuntu.com/rtg/net-2.6
Anton Vorontsov [Wed, 9 Jun 2010 23:27:08 +0000 (16:27 -0700)]
gianfar: Revive the driver for eTSEC devices (disable timestamping)
Since commit
cc772ab7cdcaa24d1fae332d92a1602788644f7a ("gianfar: Add
hardware RX timestamping support"), the driver no longer works on
at least MPC8313ERDB and MPC8568EMDS boards (and possibly much more
boards as well).
That's how MPC8313 Reference Manual describes RCTRL_TS_ENABLE bit:
Timestamp incoming packets as padding bytes. PAL field is set
to 8 if the PAL field is programmed to less than 8. Must be set
to zero if TMR_CTRL[TE]=0.
I see that the commit above sets this bit, but it doesn't handle
TMR_CTRL. Manfred probably had this bit set by the firmware for
his boards. But obviously this isn't true for all boards in the
wild.
Also, I recall that Freescale BSPs were explicitly disabling the
timestamping because of a performance drop.
For now, the best way to deal with this is just disable the
timestamping, and later we can discuss proper device tree bindings
and implement enabling this feature via some property.
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Mon, 7 Jun 2010 04:51:58 +0000 (04:51 +0000)]
caif: fix a couple range checks
The extra ! character means that these conditions are always false.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Mon, 7 Jun 2010 05:39:32 +0000 (05:39 +0000)]
phylib: Add support for the LXT973 phy.
This patch implements a work around for Erratum 5, "3.3 V Fiber Speed
Selection." If the hardware wiring does not respect this erratum, then
fiber optic mode will not work properly.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Marek [Mon, 7 Jun 2010 20:22:12 +0000 (22:22 +0200)]
kbuild: Generate modules.builtin in make modules
Generating the file in make modules_install was broken as well, because
it didn't work in a readonly filesystem and otherwise it generated a
root-owned file which is not wanted.
Reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Arnaldo Carvalho de Melo [Wed, 9 Jun 2010 19:57:39 +0000 (16:57 -0300)]
perf tools: Reorganize the Makefile feature tests
Moving the tests to a separate file, feature-tests.mak and using a try-cc
function similar to the try-run in Kbuild.
This also makes the output more quiet as we can stop using the INTERMEDIATE
target to remove the .perf.dev.null file needed for some gcc versions where
/dev/null can't be used as the output file name.
As the tests get shorter by uninlining the source code used to test for
features, we can more properly use identation.
The feature tests itself can be made more clear and reused, like when trying to
see what is needed to have bfd_demangle.
We also get a bit closer to reusing scripts/Kbuild.include, reducing the
distance from the kernel build system.
Tests performed:
[root@emilia perf]# make -j9 O=/tmp/perf
PERF_VERSION = 0.0.2.PERF
GEN /tmp/perf/common-cmds.h
* new build flags or prefix
GEN perf-archive
CC /tmp/perf/builtin-annotate.o
CC /tmp/perf/bench/sched-messaging.o
CC /tmp/perf/builtin-diff.o
<SNIP>
CC /tmp/perf/scripts/python/Perf-Trace-Util/Context.o
CC /tmp/perf/perf.o
CC /tmp/perf/builtin-help.o
AR /tmp/perf/libperf.a
LINK /tmp/perf/perf
[root@emilia perf]#
If we uninstall, for instance newt-devel we get:
[root@emilia perf]# rpm -e newt-devel
[root@emilia perf]# make -j9 O=/tmp/perf
Makefile:564: newt not found, disables TUI support. Please install newt-devel or libnewt-dev
* new build flags or prefix
GEN perf-archive
CC /tmp/perf/perf.o
CC /tmp/perf/builtin-annotate.o
<SNIP>
AR /tmp/perf/libperf.a
LINK /tmp/perf/perf
[root@emilia perf]#
And then binutils-devel:
[root@emilia perf]# make -j9 O=/tmp/perf
Makefile:564: newt not found, disables TUI support. Please install newt-devel or libnewt-dev
Makefile:632: No bfd.h/libbfd found, install binutils-dev[el]/zlib-static to gain symbol demangling
* new build flags or prefix
GEN perf-archive
CC /tmp/perf/perf.o
<SNIP>
AR /tmp/perf/libperf.a
LINK /tmp/perf/perf
[root@emilia perf]#
And then strictly required devel packages:
[root@emilia perf]# rpm -e elfutils-libelf-devel elfutils-devel
[root@emilia perf]# make -j9 O=/tmp/perf
Makefile:509: No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev
Makefile:542: *** No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel. Stop.
[root@emilia perf]#
After installing everything back on:
[root@emilia perf]# yum install elfutils-devel binutils-devel newt-devel
<SNIP>
Installed:
binutils-devel.x86_64 0:2.20.51.0.2-5.11.el6
elfutils-devel.x86_64 0:0.147-1.el6
elfutils-libelf-devel.x86_64 0:0.147-1.el6
newt-devel.x86_64 0:0.52.11-1.el6
Complete!
[root@emilia perf]# make -j9
PERF_VERSION = 0.0.2.PERF
GEN common-cmds.h
* new build flags or prefix
GEN perf-archive
CC builtin-annotate.o
<SNIP>
AR libperf.a
LINK perf
[root@emilia perf]# make -j9
[root@emilia perf]#
Thanks to Sam for pointing me to try-run.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tim Gardner [Tue, 8 Jun 2010 23:51:27 +0000 (17:51 -0600)]
net: Print num_rx_queues imbalance warning only when there are allocated queues
BugLink: http://bugs.launchpad.net/bugs/591416
There are a number of network drivers (bridge, bonding, etc) that are not yet
receive multi-queue enabled and use alloc_netdev(), so don't print a
num_rx_queues imbalance warning in that case.
Also, only print the warning once for those drivers that _are_ multi-queue
enabled.
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Linus Torvalds [Wed, 9 Jun 2010 19:44:19 +0000 (12:44 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
mac80211: fix deauth before assoc
iwlwifi: add missing rcu_read_lock
mac80211: fix function pointer check
wireless: remove my name from the maintainer list
ath5k: fix NULL pointer in antenna configuration
p54usb: Add device ID for Dell WLA3310 USB
wl1251: fix a memory leak in probe
ipmr: dont corrupt lists
8139too: fix buffer overrun in rtl8139_init_board
asix: check packet size against mtu+ETH_HLEN instead of ETH_FRAME_LEN
r8169: fix random mdio_write failures
ip6mr: fix a typo in ip6mr_for_each_table()
iwlwifi: move sysfs_create_group to post request firmware
iwlwifi: add name to Maintainers list
iwl3945: fix internal scan
iwl3945: enable stuck queue detection on 3945
ipv6: avoid high order allocations
ath5k: retain promiscuous setting
ath5k: depend on CONFIG_PM_SLEEP for suspend/resume functions
mac80211: process station blockack action frames from work
...
Linus Torvalds [Wed, 9 Jun 2010 19:43:04 +0000 (12:43 -0700)]
Merge branch 'for-2.6.35' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.35' of git://linux-nfs.org/~bfields/linux:
nfsd4: shut down callback queue outside state lock
nfsd: nfsd_setattr needs to call commit_metadata
David Howells [Wed, 9 Jun 2010 18:52:22 +0000 (19:52 +0100)]
FRV: Reinstate null behaviour for the GDB remote protocol 'p' command
Reinstate the null behaviour that the in-kernel gdbstub had for the GDB
remote protocol 'p' command (retrieve a single register value) prior to
commit
7ca8b9c0dafd ("frv: extend gdbstub to support more features of
gdb").
Before that, the 'p' command just returned an empty reply, which causes
gdb to then go and use the 'g' command. However, since that commit, the
'p' command returns an error string, which causes gdb to abort its
connection to the target.
Not all gdb versions are affected, some use try 'g' first, and if that
works, don't bother with 'p', and so don't see the error.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David S. Miller [Wed, 9 Jun 2010 18:13:23 +0000 (11:13 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6
Ingo Molnar [Wed, 9 Jun 2010 16:55:20 +0000 (18:55 +0200)]
Merge branch 'perf/core' of git://git./linux/kernel/git/frederic/random-tracing into perf/core
Linus Torvalds [Wed, 9 Jun 2010 16:45:46 +0000 (09:45 -0700)]
Merge branch 'msm-urgent' of git://codeaurora.org/quic/kernel/dwalker/linux-msm
* 'msm-urgent' of git://codeaurora.org/quic/kernel/dwalker/linux-msm:
mmc: msm: fix compile error on MSM7x30
msm: dma: add completion.h header
Linus Torvalds [Wed, 9 Jun 2010 15:52:03 +0000 (08:52 -0700)]
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Fix sg_dma_len() regression
microblaze: Define ARCH_SLAB_MINALIGN to fix slab crash
Daniel Walker [Mon, 24 May 2010 17:15:00 +0000 (10:15 -0700)]
mmc: msm: fix compile error on MSM7x30
MSM7x30 isn't supported in this driver yet. If ones tried to compile it in
with MSM7x30 configure you get,
linux-2.6/drivers/mmc/host/msm_sdcc.c: In function 'msmsdcc_fifo_addr':
linux-2.6/drivers/mmc/host/msm_sdcc.c:165: error: 'MSM_SDC1_PHYS' undeclared (first use in this function)
linux-2.6/drivers/mmc/host/msm_sdcc.c:165: error: (Each undeclared identifier is reported only once
linux-2.6/drivers/mmc/host/msm_sdcc.c:165: error: for each function it appears in.)
linux-2.6/drivers/mmc/host/msm_sdcc.c:167: error: 'MSM_SDC2_PHYS' undeclared (first use in this function)
linux-2.6/drivers/mmc/host/msm_sdcc.c:169: error: 'MSM_SDC3_PHYS' undeclared (first use in this function)
linux-2.6/drivers/mmc/host/msm_sdcc.c:171: error: 'MSM_SDC4_PHYS' undeclared (first use in this function)
So we add a Kconfig check to prevent this.
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
Alan Cox [Wed, 9 Jun 2010 08:39:49 +0000 (09:39 +0100)]
misc: Fix allocation 'borrowed' by vhost_net
10, 233 is allocated officially to /dev/kmview which is shipping in
Ubuntu and Debian distributions. vhost_net seem to have borrowed it
without making a proper request and this causes regressions in the other
distributions.
vhost_net can use a dynamic minor so use that instead. Also update the
file with a comment to try and avoid future misunderstandings.
cc: stable@kernel.org
Signed-off-by: Alan Cox <device@lanana.org>
[ We should have caught this before 2.6.34 got released. - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Julia Lawall [Wed, 26 May 2010 15:57:05 +0000 (17:57 +0200)]
KVM: ia64: Add missing spin_unlock in kvm_arch_hardware_enable()
Add a spin_unlock missing on the error path.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression E1;
@@
* spin_lock(E1,...);
<+... when != E1
if (...) {
... when != E1
* return ...;
}
...+>
* spin_unlock(E1,...);
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Avi Kivity <avi@redhat.com>
Jan Kiszka [Wed, 26 May 2010 19:36:33 +0000 (21:36 +0200)]
KVM: Fix order passed to iommu_unmap
This is obviously a left-over from the the old interface taking the
size. Apparently a mostly harmless issue with the current iommu_unmap
implementation.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Avi Kivity [Thu, 27 May 2010 11:35:58 +0000 (14:35 +0300)]
KVM: MMU: Remove user access when allowing kernel access to gpte.w=0 page
If cr0.wp=0, we have to allow the guest kernel access to a page with pte.w=0.
We do that by setting spte.w=1, since the host cr0.wp must remain set so the
host can write protect pages. Once we allow write access, we must remove
user access otherwise we mistakenly allow the user to write the page.
Reviewed-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Marcelo Tosatti [Fri, 28 May 2010 12:44:59 +0000 (09:44 -0300)]
KVM: MMU: invalidate and flush on spte small->large page size change
Always invalidate spte and flush TLBs when changing page size, to make
sure different sized translations for the same address are never cached
in a CPU's TLB.
Currently the only case where this occurs is when a non-leaf spte pointer is
overwritten by a leaf, large spte entry. This can happen after dirty
logging is disabled on a memslot, for example.
Noticed by Andrea.
KVM-Stable-Tag
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Joerg Roedel [Mon, 17 May 2010 12:43:35 +0000 (14:43 +0200)]
KVM: SVM: Implement workaround for Erratum 383
This patch implements a workaround for AMD erratum 383 into
KVM. Without this erratum fix it is possible for a guest to
kill the host machine. This patch implements the suggested
workaround for hypervisors which will be published by the
next revision guide update.
[jan: fix overflow warning on i386]
[xiao: fix unused variable warning]
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Joerg Roedel [Mon, 17 May 2010 12:43:34 +0000 (14:43 +0200)]
KVM: SVM: Handle MCEs early in the vmexit process
This patch moves handling of the MC vmexits to an earlier
point in the vmexit. The handle_exit function is too late
because the vcpu might alreadry have changed its physical
cpu.
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Jean Delvare [Tue, 18 May 2010 07:34:12 +0000 (09:34 +0200)]
KVM: powerpc: fix init/exit annotation
kvmppc_e500_exit() is a module_exit function, so it should be tagged
with __exit, not __init. The incorrect annotation was added by commit
2986b8c72c272ea58edd37903b042c6da985627d.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Oleg Nesterov [Thu, 3 Jun 2010 19:32:43 +0000 (21:32 +0200)]
x86: Unify save_stack_address() and save_stack_address_nosched()
Cleanup. Factor the common code in save_stack_address() and
save_stack_address_nosched().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <
20100603193243.GA31534@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Oleg Nesterov [Thu, 3 Jun 2010 19:32:39 +0000 (21:32 +0200)]
x86: Make save_stack_address() !CONFIG_FRAME_POINTER friendly
If CONFIG_FRAME_POINTER=n, print_context_stack() shouldn't neglect the
non-reliable addresses on stack, this is all we have if dump_trace(bp)
is called with the wrong or zero bp.
For example, /proc/pid/stack doesn't work if CONFIG_FRAME_POINTER=n.
This patch obviously has no effect if CONFIG_FRAME_POINTER=y, otherwise
it reverts
1650743c "x86: don't save unreliable stack trace entries".
Also, remove the unnecessary type-cast.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <
20100603193239.GA31530@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Li Zefan [Wed, 26 May 2010 09:22:17 +0000 (17:22 +0800)]
tracing: Remove kmemtrace ftrace plugin
We have been resisting new ftrace plugins and removing existing
ones, and kmemtrace has been superseded by kmem trace events
and perf-kmem, so we remove it.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
[ remove kmemtrace from the makefile, handle slob too ]
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
FUJITA Tomonori [Tue, 8 Jun 2010 11:03:15 +0000 (20:03 +0900)]
microblaze: Fix sg_dma_len() regression
The commit "asm-generic: add NEED_SG_DMA_LENGTH to define sg_dma_len()"
18e98307de0d746cb0845ebf66535ce2184c25a2 broke microblaze compilation.
dma_direct_map_sg() sets sg->dma_length, however microblaze doesn't
set NEED_SG_DMA_LENGTH so scatterlist strcutres doesn't include
dma_length.
sg->dma_length is always equal to sg->length on microblaze. So we
don't need to set set dma_length, that is, microblaze can simply use
sg->length.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Michal Simek <monstr@monstr.eu>
Michal Simek [Mon, 7 Jun 2010 13:17:55 +0000 (15:17 +0200)]
microblaze: Define ARCH_SLAB_MINALIGN to fix slab crash
The commit "mm: Move ARCH_SLAB_MINALIGN and
ARCH_KMALLOC_MINALIGN to <linux/slab_def.h>"
1f0ce8b3dd667dca7 which moved the ARCH_SLAB_MINALIGN
default into the global header broke FLAT for Microblaze.
Error message:
slab error in verify_redzone_free(): cache `idr_layer_cache':
memory outside object was overwritten
Signed-off-by: Michal Simek <monstr@monstr.eu>
Peter Zijlstra [Wed, 9 Jun 2010 09:57:23 +0000 (11:57 +0200)]
perf: Fix build breakage for architecutes without atomic64_t
The local64.h include dependency was not dependent on PERF_EVENT=y,
which meant that arch's without atomic64_t support ended up including
it and failed to build.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Peter Zijlstra [Fri, 21 May 2010 12:43:08 +0000 (14:43 +0200)]
perf: Convert perf_event to local_t
Since now all modification to event->count (and ->prev_count
and ->period_left) are local to a cpu, change then to local64_t so we
avoid the LOCK'ed ops.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Peter Zijlstra [Fri, 21 May 2010 12:27:58 +0000 (14:27 +0200)]
perf: Add perf_event::child_count
Only child counters adding back their values into the parent counter
are responsible for cross-cpu updates to event->count.
So if we pull that out into a new child_count variable, we get an
event->count that is only modified locally.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Peter Zijlstra [Fri, 21 May 2010 12:43:12 +0000 (14:43 +0200)]
perf: Add perf_event_count()
Create a helper function for those sites that want to read the event count.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Peter Zijlstra [Fri, 21 May 2010 12:05:13 +0000 (14:05 +0200)]
arch: Implement local64_t
On 64bit, local_t is of size long, and thus we make local64_t an alias.
On 32bit, we fall back to atomic64_t. (architecture can provide optimized
32-bit version)
(This new facility is to be used by perf events optimizations.)
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-arch@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>