Linus Torvalds [Fri, 29 Oct 2010 18:49:38 +0000 (11:49 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jwessel/linux-2.6-kgdb
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kgdb,ppc: Individual register get/set for ppc
kgdbts: prevent re-entry to kgdbts before it unregisters
debug_core,x86,blackfin: Clean up hw debug disable API
kdb: Fix early debugging crash regression
kgdb,arm: fix register dump
kdb: fix per_cpu command to remove supress mask
kdb: Add kdb kernel module sample
Linus Torvalds [Fri, 29 Oct 2010 18:47:11 +0000 (11:47 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/kyle/parisc-2.6
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
parisc-agp: fix missing slab.h include
Dongdong Deng [Thu, 28 Oct 2010 02:47:00 +0000 (21:47 -0500)]
kgdb,ppc: Individual register get/set for ppc
commit
534af1082329392bc29f6badf815e69ae2ae0f4c(kgdb,kdb: individual
register set and and get API) introduce dbg_get_reg/dbg_set_reg API
for individual register get and set.
This patch implement those APIs for ppc.
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Dongdong Deng [Tue, 31 Aug 2010 02:06:00 +0000 (21:06 -0500)]
kgdbts: prevent re-entry to kgdbts before it unregisters
The "kgdb_connected" variable of debug_core just indicates whether or
not kgdbts is connected to the debug_core. It does not completely
prevent a script from trying invoke kgdbts again and possibly crashing
the system (see Call Trace below).
The configured variable in kgtbts can be used instead of
kgdb_connected instead of kgdb_connected. The cleanup_kgdbts() can
also be removed because there is no possible way to build kgdbts as a
kernel module that you could unload with rmmod.
Call Trace:
-----------------------------------------------------------------
root:/$ echo kgdbts=V1S1000 > /sys/module/kgdbts/parameters/kgdbts
kgdb: Unregistered I/O driver kgdbts, debugger disabled.
------------[ cut here ]------------
WARNING: at kernel/debug/debug_core.c:1002
kgdb_unregister_io_module+0xec/0x100()
Hardware name: Moon Creek platform
Modules linked in:
Pid: 664, comm: sh Not tainted 2.6.34.1-WR4.0.0.0_standard #58
Call Trace:
[<
c103b1ed>] warn_slowpath_common+0x6d/0xa0
[<
c1079fdc>] ? kgdb_unregister_io_module+0xec/0x100
[<
c1079fdc>] ? kgdb_unregister_io_module+0xec/0x100
[<
c10544e0>] ? param_attr_store+0x0/0x20
[<
c103b235>] warn_slowpath_null+0x15/0x20
[<
c1079fdc>] kgdb_unregister_io_module+0xec/0x100
[<
c124e4ea>] cleanup_kgdbts+0x1a/0x20
[<
c124eced>] param_set_kgdbts_var+0x6d/0xb0
[<
c124ec80>] ? param_set_kgdbts_var+0x0/0xb0
[<
c10544f7>] param_attr_store+0x17/0x20
[<
c105457c>] module_attr_store+0x2c/0x40
[<
c111fe84>] sysfs_write_file+0x94/0xf0
[<
c10d42f6>] vfs_write+0x96/0x130
[<
c111fdf0>] ? sysfs_write_file+0x0/0xf0
[<
c10d44d6>] sys_write+0x46/0xd0
[<
c13bf329>] system_call_done+0x0/0x4
---[ end trace
4eb028c6ee43154c ]---
kgdb: Unregistered I/O driver kgdbts, debugger disabled.
-----------------------------------------------------------------
[jason.wessel@windriver.com: remove cleanup_kgdbts() ]
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Dongdong Deng [Wed, 18 Aug 2010 11:02:00 +0000 (06:02 -0500)]
debug_core,x86,blackfin: Clean up hw debug disable API
The kgdb_disable_hw_debug() was an architecture specific function for
disabling all hardware breakpoints on a per cpu basis when entering
the debug core.
This patch will remove the weak function kdbg_disable_hw_debug() and
change it into a call back which lives with the rest of hw breakpoint
call backs in struct kgdb_arch.
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Jason Wessel [Fri, 29 Oct 2010 18:14:41 +0000 (13:14 -0500)]
kdb: Fix early debugging crash regression
The kdb_current legally be equal to NULL in the early boot of the x86
arch. The problem pcan be observed by booting with the kernel arguments:
earlyprintk=vga ekgdboc=kbd kgdbwait
The kdb shell will oops on entry and recursively fault because it
cannot get past the final stage of shell initialization.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Rabin Vincent [Tue, 26 Oct 2010 17:49:00 +0000 (12:49 -0500)]
kgdb,arm: fix register dump
DBG_MAX_REG_NUM incorrectly had the number of indices in the GDB regs
array rather than the number of registers, leading to an oops when the
"rd" command is used in KDB.
Cc: stable@kernel.org
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Jason Wessel [Fri, 29 Oct 2010 13:04:16 +0000 (08:04 -0500)]
kdb: fix per_cpu command to remove supress mask
Rusty pointed out that the per_cpu command uses up lots of space on
the stack and the cpu supress mask is probably not needed.
This patch removes the need for the supress mask as well as fixing up
the following problems with the kdb per_cpu command:
* The per_cpu command should allow an address as an argument
* When you have more data than can be displayed on one screen allow
the user to break out of the print loop.
Reported-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Jason Wessel [Mon, 25 Oct 2010 15:14:05 +0000 (10:14 -0500)]
kdb: Add kdb kernel module sample
Add an example of how to add a dynamic kdb shell command via a kernel
module.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Linus Torvalds [Fri, 29 Oct 2010 18:13:10 +0000 (11:13 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (46 commits)
ftrace/MIPS: Enable C Version of recordmcount
ftrace/MIPS: Add module support for C version of recordmcount
ftrace/MIPS: Add MIPS64 support for C version of recordmcount
MIPS: Make TASK_SIZE reflect proper size for both 32 and 64 bit processes.
MIPS: Allow UserLocal on MIPS_R1 processors
MIPS: Honor L2 bypass bit
MIPS: Add BMIPS CP0 register definitions
MIPS: Add BMIPS processor types to Kconfig
MIPS: Decouple BMIPS CPU support from bcm47xx/bcm63xx SoC code
MIPS: Add support for hardware performance events (mipsxx)
MIPS: Perf-events: Add callchain support
MIPS: add support for hardware performance events (skeleton)
MIPS: add support for software performance events
MIPS: define local_xchg from xchg_local to atomic_long_xchg
MIPS: AR7: Add support for Titan (TNETV10xx) SoC variant
MIPS: AR7: Initialize GPIO earlier
MIPS: Add platform device and Kconfig for Octeon USB EHCI / OHCI
USB: Add EHCI and OHCH glue for OCTEON II SOCs.
MIPS: Octeon: Add register definitions for EHCI / OHCI USB glue logic.
MIPS: Octeon: Apply CN63XXP1 errata workarounds.
...
Wu Zhangjin [Wed, 27 Oct 2010 10:59:09 +0000 (18:59 +0800)]
ftrace/MIPS: Enable C Version of recordmcount
Selects HAVE_C_RECORDMCOUNT to use the C version of the recordmcount
intead of the old Perl Version of recordmcount.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
LKML-Reference: <
bb99009a9ac79d3f55a8c8bf1c8bd2bc0e1f160e.
1288176026.git.wuzhangjin@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Wu Zhangjin [Wed, 27 Oct 2010 10:59:08 +0000 (18:59 +0800)]
ftrace/MIPS: Add module support for C version of recordmcount
Since MIPS modules' address space differs from the core kernel space, to access
the _mcount in the core kernel, the kernel functions in modules must use long
call (-mlong-calls): load the _mcount address into one register and jump to the
address stored by the register:
c:
3c030000 lui v1,0x0 <--------> b label
c: R_MIPS_HI16 _mcount
c: R_MIPS_NONE *ABS*
c: R_MIPS_NONE *ABS*
10:
64630000 daddiu v1,v1,0
10: R_MIPS_LO16 _mcount
10: R_MIPS_NONE *ABS*
10: R_MIPS_NONE *ABS*
14:
03e0082d move at,ra
18:
0060f809 jalr v1
label:
In the old Perl version of recordmcount, we only need to record the position of
the 1st R_MIPS_HI16 type of _mcount, and later, in ftrace_make_nop(), replace
the instruction in this position by a "b label" and in ftrace_make_call(),
replace it back.
But, the default C version of recordmcount records all of the _mcount symbols,
so, we must filter the 2nd _mcount like the Perl version of recordmcount does.
The C version of recordmcount copes with the symbols before they are linked, So
It doesn't know the type of the symbols and therefore can not filter the
symbols as the Perl version of recordmcount does. But as we can see above, the
2nd _mcount symbols of the long call alawys follows the 1st _mcount symbol of
the same long call, which means the offset from the 1st to the 2nd is fixed, it
is 0x10-0xc = 4 here, 4 is the length of the 1st load instruciton, for MIPS has
fixed length of instructions, this offset is always 4.
And as we know, the _mcount is inserted into the entry of every kernel
function, the offset between the other _mcount's is expected to be always
bigger than 4. So, to filter the 2ns _mcount symbol of the long call, we can
simply check the offset between two _mcount symbols, If it is 4, then, filter
the 2nd _mcount symbol.
To avoid touching too much code, an 'empty' function fn_is_fake_mcount() is
added for all of the archs, and the specific archs can override it via chaning
the function pointer: is_fake_mcount in do_file() with the e_machine. e.g. This
patch adds MIPS_is_fake_mcount() to override the default fn_is_fake_mcount()
pointed by is_fake_mcount.
This fn_is_fake_mcount() checks if the _mcount symbol is fake, e.g. the 2nd
_mcount symbol of the long call is fake, for there are 2 _mcount symbols mapped
to one real mcount call, so, one of them is fake and must be filtered.
This fn_is_fake_mcount() is called in sift_rel_mcount() after finding the
_mcount symbols and before adding the _mcount symbol into mrelp, so, it can
prevent the fake mcount symbol going into the last __mcount_loc table.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
LKML-Reference: <
b866f0138224340a132d31861fa3f9300dee30ac.
1288176026.git.wuzhangjin@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
John Reiser [Wed, 27 Oct 2010 10:59:07 +0000 (18:59 +0800)]
ftrace/MIPS: Add MIPS64 support for C version of recordmcount
MIPS64 has 'weird' Elf64_Rel.r_info[1,2], which must be used instead of
the generic Elf64_Rel.r_info, otherwise, the C version of recordmcount
will not work for "segmentation fault".
Usage of "union mips_r_info" and the functions MIPS64_r_sym() and
MIPS64_r_info() written by Maciej W. Rozycki <macro@linux-mips.org>
----
[1] http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf
[2] arch/mips/include/asm/module.h
Tested-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: John Reiser <jreiser@BitWagon.com>
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
LKML-Reference: <AANLkTinwXjLAYACUfhLYaocHD_vBbiErLN3NjwN8JqSy@mail.gmail.com>
LKML-Reference: <
910dc2d5ae1ed042df4f96815fe4a433078d1c2a.
1288176026.git.wuzhangjin@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 14 Oct 2010 18:32:33 +0000 (11:32 -0700)]
MIPS: Make TASK_SIZE reflect proper size for both 32 and 64 bit processes.
The TASK_SIZE macro should reflect the size of a user process virtual
address space. Previously for 64-bit kernels, this was not the case.
The immediate cause of pain was in
hugetlbfs/inode.c:hugetlb_get_unmapped_area() where 32-bit processes
trying to mmap a huge page would be served a page with an address
outside of the 32-bit address range. But there are other uses of
TASK_SIZE in the kernel as well that would like an accurate value.
The new definition is nice because it now makes TASK_SIZE and
TASK_SIZE_OF() yield the same value for any given process.
For 32-bit kernels there should be no change, although I did factor
out some code in asm/processor.h that became identical for the 32-bit and
64-bit cases.
__UA_LIMIT is now set to ~((1 << SEGBITS) - 1) for 64-bit kernels.
This should eliminate the possibility of getting a
AddressErrorException in the kernel for addresses that pass the
access_ok() test.
With the patch applied, I can still run o32, n32 and n64 processes,
and have an o32 shell fork/exec both n32 and n64 processes.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1701/
Kevin Cernekee [Sat, 16 Oct 2010 21:22:38 +0000 (14:22 -0700)]
MIPS: Allow UserLocal on MIPS_R1 processors
Some MIPS32R1 processors implement UserLocal (RDHWR $29) to accelerate
programs that make extensive use of thread-local storage. Therefore,
setting up the HWRENA register should not depend on cpu_has_mips_r2.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Kevin Cernekee [Thu, 21 Oct 2010 03:05:42 +0000 (20:05 -0700)]
MIPS: Honor L2 bypass bit
On many of the newer MIPS32 cores, CP0 CONFIG2 bit 12 (L2B) indicates
that the L2 cache is disabled and therefore Linux should not attempt
to use it.
[Ralf: Moved the code added by Kevin's original patch into a separate
function that can easily be replaced for platforms that need more a
different probe.]
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org>
Cc: <linux-kernel@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/1723/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Kevin Cernekee [Sat, 16 Oct 2010 21:22:32 +0000 (14:22 -0700)]
MIPS: Add BMIPS CP0 register definitions
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: mbizon@freebox.fr
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Tested-by: Florian Fainelli <ffainelli@freebox.fr>
Patchwork: https://patchwork.linux-mips.org/patch/1708/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org
Kevin Cernekee [Sun, 17 Oct 2010 17:56:53 +0000 (10:56 -0700)]
MIPS: Add BMIPS processor types to Kconfig
[v2: add "VIPER" marketing name for BMIPS4350]
Add processor feature definitions for BMIPS3300, BMIPS4350, BMIPS4380,
and BMIPS5000.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: mbizon@freebox.fr
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Tested-by: Florian Fainelli <ffainelli@freebox.fr>
Patchwork: https://patchwork.linux-mips.org/patch/1716/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org
Kevin Cernekee [Sat, 16 Oct 2010 21:22:30 +0000 (14:22 -0700)]
MIPS: Decouple BMIPS CPU support from bcm47xx/bcm63xx SoC code
BMIPS processor cores are used in 50+ different chipsets spread across
5+ product lines. In many cases the chipsets do not share the same
peripheral register layouts, the same register blocks, the same
interrupt controllers, the same memory maps, or much of anything else.
But, across radically different SoCs that share nothing more than the
same BMIPS CPU, a few things are still mostly constant:
SMP operations
Access to performance counters
DMA cache coherency quirks
Cache and memory bus configuration
So, it makes sense to treat each BMIPS processor type as a generic
"building block," rather than tying it to a specific SoC. This makes it
easier to support a large number of BMIPS-based chipsets without
unnecessary duplication of code, and provides the infrastructure needed
to support BMIPS-proprietary features.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: mbizon@freebox.fr
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Tested-by: Florian Fainelli <ffainelli@freebox.fr>
Patchwork: https://patchwork.linux-mips.org/patch/1706/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org
Deng-Cheng Zhu [Tue, 12 Oct 2010 11:37:24 +0000 (19:37 +0800)]
MIPS: Add support for hardware performance events (mipsxx)
This patch adds the mipsxx Perf-events support based on the skeleton.
Generic hardware events and cache events are now fully implemented for
the 24K/34K/74K/1004K cores. To support other cores in mipsxx (such as
R10000/SB1), the generic hardware event tables and cache event tables
need to be filled out. To support other CPUs which have different PMU
than mipsxx, such as RM9000 and LOONGSON2, the additional files
perf_event_$cpu.c need to be created.
Raw event is an important part of Perf-events. It helps the user collect
performance data for events that are not listed as the generic hardware
events and cache events but ARE supported by the CPU's PMU.
This patch also adds this feature for mipsxx 24K/34K/74K/1004K. For how to
use it, please refer to processor core software user's manual and the
comments for mipsxx_pmu_map_raw_event() for more details.
Please note that this is a "precise" implementation, which means the
kernel will check whether the requested raw events are supported by this
CPU and which hardware counters can be assigned for them.
To test the functionality of Perf-event, you may want to compile the tool
"perf" for your MIPS platform. You can refer to the following URL:
http://www.linux-mips.org/archives/linux-mips/2010-10/msg00126.html
You also need to customize the CFLAGS and LDFLAGS in tools/perf/Makefile
for your libs, includes, etc.
In case you encounter the boot failure in SMVP kernel on multi-threading
CPUs, you may take a look at:
http://www.linux-mips.org/git?p=linux-mti.git;a=commitdiff;h=
5460815027d802697b879644c74f0e8365254020
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: linux-mips@linux-mips.org
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: jamie.iles@picochip.com
Cc: ddaney@caviumnetworks.com
Cc: matt@console-pimps.org
Patchwork: https://patchwork.linux-mips.org/patch/1689/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
create mode 100644 arch/mips/kernel/perf_event_mipsxx.c
Deng-Cheng Zhu [Tue, 12 Oct 2010 11:37:23 +0000 (19:37 +0800)]
MIPS: Perf-events: Add callchain support
Adds callchain support for MIPS Perf-events. For more info on this feature,
please refer to tools/perf/Documentation/perf-report.txt and
tools/perf/design.txt.
Currently userspace callchain data is not recorded, because we do not have
a safe way to do this.
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
Acked-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: jamie.iles@picochip.com
Cc: matt@console-pimps.org
Patchwork: https://patchwork.linux-mips.org/patch/1690/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Deng-Cheng Zhu [Tue, 12 Oct 2010 11:37:22 +0000 (19:37 +0800)]
MIPS: add support for hardware performance events (skeleton)
This patch provides the skeleton of the HW perf event support. To enable
this feature, we can not choose the SMTC kernel; Oprofile should be
disabled; kernel performance events be selected. Then we can enable it in
Kernel type menu.
Oprofile for MIPS platforms initializes irq at arch init time. Currently
we do not change this logic to allow PMU reservation.
If a platform has EIC, we can use the irq base and perf counter irq offset
defines for the interrupt controller in specific init_hw_perf_events().
Based on this skeleton patch, the 3 different kinds of MIPS PMU, namely,
mipsxx/loongson2/rm9000, can be supported by adding corresponding lower
level C files at the bottom. The suggested names of these files are
perf_event_mipsxx.c/perf_event_loongson2.c/perf_event_rm9000.c. So, for
example, we can do this by adding "#include perf_event_mipsxx.c" at the
bottom of perf_event.c.
In addition, PMUs with 64bit counters are also considered in this patch.
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: linux-mips@linux-mips.org
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: jamie.iles@picochip.com
Cc: ddaney@caviumnetworks.com
Cc: matt@console-pimps.org
Patchwork: https://patchwork.linux-mips.org/patch/1688/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Deng-Cheng Zhu [Tue, 12 Oct 2010 11:37:21 +0000 (19:37 +0800)]
MIPS: add support for software performance events
Software events are required as part of the measurable stuff by the
Linux performance counter subsystem. Here is the list of events added by
this patch:
PERF_COUNT_SW_PAGE_FAULTS
PERF_COUNT_SW_PAGE_FAULTS_MIN
PERF_COUNT_SW_PAGE_FAULTS_MAJ
PERF_COUNT_SW_ALIGNMENT_FAULTS
PERF_COUNT_SW_EMULATION_FAULTS
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: linux-mips@linux-mips.org
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: jamie.iles@picochip.com
Acked-by: David Daney <ddaney@caviumnetworks.com>
Reviewed-by: Matt Fleming <matt@console-pimps.org>
Patchwork: https://patchwork.linux-mips.org/patch/1686/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Deng-Cheng Zhu [Tue, 12 Oct 2010 11:37:20 +0000 (19:37 +0800)]
MIPS: define local_xchg from xchg_local to atomic_long_xchg
Perf-events is now using local_t helper functions internally. There is a
use of local_xchg(). On MIPS, this is defined to xchg_local() which is
missing in asm/system.h. This patch re-defines local_xchg() in asm/local.h
to atomic_long_xchg(). Then Perf-events can pass the build.
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: linux-mips@linux-mips.org
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: jamie.iles@picochip.com
Cc: ddaney@caviumnetworks.com
Cc: matt@console-pimps.org
Patchwork: https://patchwork.linux-mips.org/patch/1687/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Sun, 29 Aug 2010 15:08:44 +0000 (17:08 +0200)]
MIPS: AR7: Add support for Titan (TNETV10xx) SoC variant
Add support for Titan TNETV1050,1055,1056,1060 variants. This SoC is almost
completely identical to AR7 except on a few points:
- a second bank of gpios is available
- vlynq0 on titan is vlynq1 on ar7
- different PHY addresses for cpmac0
This SoC can be found on commercial products like the Linksys WRTP54G
Original patch by Xin with improvments by Florian.
Signed-off-by: Xin Zhen <xlonestar2000@aim.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/1563/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
Florian Fainelli [Sun, 29 Aug 2010 15:08:41 +0000 (17:08 +0200)]
MIPS: AR7: Initialize GPIO earlier
In order to detect the Titan variant, we must initialize GPIOs earlier since
detection relies on some GPIO values to be set.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/1562/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
David Daney [Fri, 8 Oct 2010 21:47:53 +0000 (14:47 -0700)]
MIPS: Add platform device and Kconfig for Octeon USB EHCI / OHCI
Declare that OCTEON reference boards have both OHCI and EHCI.
Add platform devices for the corresponding hardware.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-usb@vger.kernel.org
To: dbrownell@users.sourceforge.net
Patchwork: http://patchwork.linux-mips.org/patch/1676/
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 8 Oct 2010 21:47:52 +0000 (14:47 -0700)]
USB: Add EHCI and OHCH glue for OCTEON II SOCs.
The OCTEON II SOC has USB EHCI and OHCI controllers connected directly
to the internal I/O bus. This patch adds the necessary 'glue' logic
to allow ehci-hcd and ohci-hcd drivers to work on OCTEON II.
The OCTEON normally runs big-endian, and the ehci/ohci internal
registers have host endianness, so we need to select
USB_EHCI_BIG_ENDIAN_MMIO.
The ehci and ohci blocks share a common clocking and PHY
infrastructure. Initialization of the host controller and PHY clocks
is common between the two and is factored out into the
octeon2-common.c file.
Setting of USB_ARCH_HAS_OHCI and USB_ARCH_HAS_EHCI is done in
arch/mips/Kconfig in a following patch.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-usb@vger.kernel.org
To: dbrownell@users.sourceforge.net
Patchwork: http://patchwork.linux-mips.org/patch/1675/
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 8 Oct 2010 21:47:51 +0000 (14:47 -0700)]
MIPS: Octeon: Add register definitions for EHCI / OHCI USB glue logic.
The EHCI and OHCI blocks connection to the I/O bus is controlled by
these registers.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-usb@vger.kernel.org
To: dbrownell@users.sourceforge.net
Patchwork: http://patchwork.linux-mips.org/patch/1674/
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
create mode 100644 arch/mips/include/asm/octeon/cvmx-uctlx-defs.h
David Daney [Thu, 7 Oct 2010 23:03:53 +0000 (16:03 -0700)]
MIPS: Octeon: Apply CN63XXP1 errata workarounds.
The CN63XXP1 needs a couple of workarounds to ensure memory is not written
in unexpected ways.
All PREF with hints in the range 0-4,6-24 are replaced with PREF 28. We
pass a flag to the assembler to cover compiler generated code, and patch
uasm for the dynamically generated code.
The write buffer threshold is reduced to 4.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1672/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:52 +0000 (16:03 -0700)]
WATCHDOG: octeon-wdt: Use I/O clock rate for timing calculations.
The creation of the I/O clock domain requires some adjustments. Since
the watchdog counters are clocked by the I/O clock, use its rate for
timing calculations.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: linux-watchdog@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/1659/
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:51 +0000 (16:03 -0700)]
ATA: pata_octeon_cf: Use I/O clock rate for timing calculations.
The creation of the I/O clock domain requires some adjustments. Since the
CF bus timing logic is clocked by the I/O clock, use its rate for delay
calculations.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-ide@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/1660/
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:50 +0000 (16:03 -0700)]
MIPS: Octeon: Use I/O clock rate for calculations.
The I2C and UARTS are clocked by the I/O clock, use its rate for these
devices.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1670/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:49 +0000 (16:03 -0700)]
MIPS: Octeon: Add octeon_get_io_clock_rate() for cn63xx
Starting with cn63xx Octeon I/O blocks are clocked at a different rate
than the CPU. Add a new function octeon_get_io_clock_rate() that
yields the I/O clock rate.
Also rearrange octeon_get_clock_rate() to get the value from the saved
sysinfo structure.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1671/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:48 +0000 (16:03 -0700)]
MIPS: Octeon: Remove bogus code from octeon_get_clock_rate()
We can run with any simulator clock rate. Get rid of the code
overriding it to 6MHz.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1669/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:47 +0000 (16:03 -0700)]
MIPS: Octeon: Scale Octeon2 clocks in octeon_init_cvmcount()
The per-CPU clocks are synchronized from IPD_CLK_COUNT, on cn63XX it must
be scaled by the clock frequency ratio.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1667/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:46 +0000 (16:03 -0700)]
MIPS: Octeon: Enable Read Inhibit / eXecute Inhibit on Octeon II.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1666/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:45 +0000 (16:03 -0700)]
MIPS: Octeon: Probe for Octeon II CPUs.
The OCTEON II ISA extends the original OCTEON ISA, so give it its own
__elf_platform string so optimized libraries can be selected in
userspace.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1665/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:44 +0000 (16:03 -0700)]
MIPS: Octeon: Handle Octeon II caches.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1664/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:43 +0000 (16:03 -0700)]
MIPS: Add identifiers for Octeon II CPUs.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1662/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:42 +0000 (16:03 -0700)]
MIPS: Octeon: Update L2 Cache code for CN63XX
The CN63XX has a different L2 cache architecture. Update the helper
functions to reflect this.
Some joining of split lines was also done to improve readability, as
well as reformatting of comments.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1663/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:41 +0000 (16:03 -0700)]
MIPS: Octeon: Add cn63XX to Octeon chip detection macros.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1661/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Oct 2010 23:03:40 +0000 (16:03 -0700)]
MIPS: Octeon: Update register definitions for CN63XX chips
The CN63XX is a new 6-CPU SOC based on the new OCTEON II CPU cores.
Join some lines back together. This makes some of them exceed 80
columns, but they are uninteresting and this unclutters things.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1668/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 1 Oct 2010 20:27:34 +0000 (13:27 -0700)]
MIPS: Octeon: Rewrite DMA mapping functions.
All Octeon chips can support more than 4GB of RAM. Also due to how Octeon
PCI is setup, even some configurations with less than 4GB of RAM will have
portions that are not accessible from 32-bit devices.
Enable the swiotlb code to handle the cases where a device cannot directly
do DMA. This is a complete rewrite of the Octeon DMA mapping code.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1639/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 1 Oct 2010 20:27:33 +0000 (13:27 -0700)]
MIPS: Add a platform hook for swiotlb setup.
This allows platforms that are using the swiotlb to initialize it.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1638/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 1 Oct 2010 20:27:32 +0000 (13:27 -0700)]
MIPS: Convert DMA to use dma-mapping-common.h
Use asm-generic/dma-mapping-common.h to handle all DMA mapping operations
and establish a default get_dma_ops() that forwards all operations to the
existing code.
Augment dev_archdata to carry a pointer to the struct dma_map_ops, allowing
DMA operations to be overridden on a per device basis. Currently this is
never filled in, so the default dma_map_ops are used. A follow-on patch
sets this for Octeon PCI devices.
Also initialize the dma_debug system as it is now used if it is configured.
Includes fixes by Kevin Cernekee <cernekee@gmail.com>.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1637/
Patchwork: http://patchwork.linux-mips.org/patch/1678/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 1 Oct 2010 20:27:31 +0000 (13:27 -0700)]
MIPS: ip32, ip27, jazz: Make static functions in dma-coherence.h inline.
Any function defined in a header file should be inline. This helps us
avoid 'unused' compiler warnings when we include the files in more
places in subsequent patches.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1636/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 1 Oct 2010 20:27:30 +0000 (13:27 -0700)]
MIPS: Octeon: Select ZONE_DMA32
Give us a nice place to allocate coherent DMA memory for 32-bit devices.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1635/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 1 Oct 2010 20:27:29 +0000 (13:27 -0700)]
MIPS: Octeon: Adjust top of DMA32 zone.
On OCTEON, we reserve the last 256MB of 32-bit PCI address space, mapping
the RAM in this region at a high DMA address. This makes memory in this
region unavailable for 32-bit DMA.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1634/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 1 Oct 2010 20:27:28 +0000 (13:27 -0700)]
MIPS: Allow MAX_DMA32_PFN to be overridden.
DMA mapping may reduce the usable physical address range usable for
32-bit DMA.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1633/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 1 Oct 2010 20:27:27 +0000 (13:27 -0700)]
MIPS: Octeon: Set dma_masks for octeon_mgmt device.
This allows follow-on patches to dma mapping functions to work with
the octeon mgmt device..
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1632/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
From: jiang.adam@gmail.com [Fri, 27 Aug 2010 09:32:06 +0000 (18:32 +0900)]
MIPS: IRQ: Add stackoverflow detection
Add stackoverflow detection to mips arch
Signed-off-by: Adam Jiang <jiang.adam@gmail.com>
Cc: dmitri.vorobiev@movial.com
Cc: wuzhangjin@gmail.com
Cc: ddaney@caviumnetworks.com
Cc: peterz@infradead.org
Cc: fweisbec@gmail.com
Cc: tj@kernel.org
Cc: tglx@linutronix.de
Cc: mingo@elte.hu
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1559/
Patchwork: https://patchwork.linux-mips.org/patch/1651/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Thomas Gleixner [Wed, 8 Sep 2010 13:39:14 +0000 (15:39 +0200)]
MIPS: Kconfig cleanup
arch/mips/Kconfig already sets GENERIC_HARDIRQS_NO__DO_IRQ unconditionally.
Remove the redundant select from the Loongson Kconfig.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Fri, 29 Oct 2010 18:08:25 +0000 (19:08 +0100)]
MIPS: Remove wait argument of r4k_on_each_cpu
All callers were passing in 1 anyway.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Fri, 29 Oct 2010 18:08:25 +0000 (19:08 +0100)]
MIPS: More detailed description of r4k_on_each_cpu
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Fri, 29 Oct 2010 18:08:24 +0000 (19:08 +0100)]
MIPS: Get rid of branches to .subsections.
It was a nice optimization - on paper at least. In practice it results in
branches that may exceed the maximum legal range for a branch. We can
fight that problem with -ffunction-sections but -ffunction-sections again
is incompatible with -pg used by the function tracer.
By rewriting the loop around all simple LL/SC blocks to C we reduce the
amount of inline assembler and at the same time allow GCC to often fill
the branch delay slots with something sensible or whatever else clever
optimization it may have up in its sleeve.
With this optimization gone we also no longer need -ffunction-sections,
so drop it.
This optimization was originally introduced in 2.6.21, commit
5999eca25c1fd4b9b9aca7833b04d10fe4bc877d (linux-mips.org) rsp.
f65e4fa8e0c6022ad58dc88d1b11b12589ed7f9f (kernel.org).
Original fix for the issues which caused me to pull this optimization by
Paul Gortmaker <paul.gortmaker@windriver.com>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Linus Torvalds [Fri, 29 Oct 2010 17:37:27 +0000 (10:37 -0700)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: Cleanup and thus reduce smb session structure and fields used during authentication
NTLM auth and sign - Use appropriate server challenge
cifs: add kfree() on error path
NTLM auth and sign - minor error corrections and cleanup
NTLM auth and sign - Use kernel crypto apis to calculate hashes and smb signatures
NTLM auth and sign - Define crypto hash functions and create and send keys needed for key exchange
cifs: cifs_convert_address() returns zero on error
NTLM auth and sign - Allocate session key/client response dynamically
cifs: update comments - [s/GlobalSMBSesLock/cifs_file_list_lock/g]
cifs: eliminate cifsInodeInfo->write_behind_rc (try #6)
[CIFS] Fix checkpatch warnings and bump cifs version number
cifs: wait for writeback to complete in cifs_flush
cifs: convert cifsFileInfo->count to non-atomic counter
Linus Torvalds [Fri, 29 Oct 2010 17:36:49 +0000 (10:36 -0700)]
readv/writev: do the same MAX_RW_COUNT truncation that read/write does
We used to protect against overflow, but rather than return an error, do
what read/write does, namely to limit the total size to MAX_RW_COUNT.
This is not only more consistent, but it also means that any broken
low-level read/write routine that still keeps counts in 'int' can't
break.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kyle McMartin [Fri, 29 Oct 2010 16:48:01 +0000 (12:48 -0400)]
parisc-agp: fix missing slab.h include
Commit
338e4fab added a missing kfree if the alloc_pci_dev failed
but forgot to include <linux/slab.h> for the definition of
kfree.
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Linus Torvalds [Fri, 29 Oct 2010 15:49:18 +0000 (08:49 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] fix kprobes single stepping
[S390] tape: fix dbf usage
[S390] dasd: provide a Sense Path Group ID ioctl
[S390] ftrace: select HAVE_C_RECORDMCOUNT
[S390] vdso: get rid of redefinition warnings
[S390] facility detection: remove unused variable
[S390] hypfs: Fix error handling in hypfs_diag initialization
[S390] topology: fix cpu masks for topology=off case
[S390] topology: add SCHED_MC config option
[S390] Kconfig: add machine type number to code generation options
[S390] Add z196 machine type to setup_hwcaps
Linus Torvalds [Fri, 29 Oct 2010 15:48:58 +0000 (08:48 -0700)]
Merge git://git./linux/kernel/git/pkl/squashfs-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus:
Squashfs: fix function prototype
Squashfs: fix use of __le64 annotated variable
Linus Torvalds [Fri, 29 Oct 2010 15:47:36 +0000 (08:47 -0700)]
Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md:
md: tidy up device searches in read_balance.
md/raid1: fix some typos in comments.
md/raid1: discard unused variable.
md: unplug writes to external bitmaps.
md: use separate bio pool for each md device.
md: change type of first arg to sync_page_io.
md/raid1: perform mem allocation before disabling writes during resync.
md: use bio_kmalloc rather than bio_alloc when failure is acceptable.
md: Fix possible deadlock with multiple mempool allocations.
md: fix and update workqueue usage
md: use sector_t in bitmap_get_counter
md: remove md_mutex locking.
md: Fix regression with raid1 arrays without persistent metadata.
Linus Torvalds [Fri, 29 Oct 2010 15:06:25 +0000 (08:06 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (29 commits)
braino in internal.h
convert simple cases of nfs-related ->get_sb() to ->mount()
convert btrfs
convert ceph
convert gfs2
convert afs
convert ecryptfs
convert sysfs
convert cgroup and cpuset
switch get_sb_ns() users
switch procfs to ->mount()
setting ->proc_mnt doesn't belong in proc_get_sb()
convert cifs
convert nilfs
switch logfs to ->mount()
logfs: fix a leak in get_sb
logfs get_sb, part 3
logfs get_sb, part 2
logfs get_sb massage, part 1
convert v9fs
...
Linus Torvalds [Fri, 29 Oct 2010 15:05:33 +0000 (08:05 -0700)]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched_stat: Update sched_info_queue/dequeue() code comments
sched, cgroup: Fixup broken cgroup movement
Linus Torvalds [Fri, 29 Oct 2010 15:03:48 +0000 (08:03 -0700)]
Merge git://git./linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
kbuild: add ARCH=sparc32 target
sparc32: fix build failure on CONFIG_SPARC_LEON
sparc: Fixed random SPARC/LEON SMP CPU Stuck problem.
sparc32: remove CONFIG_HAVE_PERF_EVENTS option
sparc: don't #include asm/system.h in asm/jump_label.h
sparc32: Fix unaligned stack handling on trap return.
sparc: keep calling do_signal() as long as pending signals remain
Linus Torvalds [Fri, 29 Oct 2010 15:03:30 +0000 (08:03 -0700)]
Merge git://git./linux/kernel/git/davem/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
ide: clean up timed out request handling
hpt366: fix clock turnaround
hpt366: add debounce delay to cable_detect() method
Martin Schwidefsky [Fri, 29 Oct 2010 14:50:45 +0000 (16:50 +0200)]
[S390] fix kprobes single stepping
Fix kprobes after git commit
1e54622e0403891b10f2105663e0f9dd595a1f17
broke it. The kprobe_handler is now called with interrupts in the state
at the time of the breakpoint. The single step of the replaced instruction
is done with interrupts off which makes it necessary to enable and disable
the interupts in the kprobes code.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Sebastian Ott [Fri, 29 Oct 2010 14:50:44 +0000 (16:50 +0200)]
[S390] tape: fix dbf usage
Get rid of the format string "%s" usage with volatile strings
to prevent use after free errors in the s390dbf.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Stefan Weinhuber [Fri, 29 Oct 2010 14:50:43 +0000 (16:50 +0200)]
[S390] dasd: provide a Sense Path Group ID ioctl
The BIODASDSNID ioctl executes a 'Sense Path Group ID'
command on a DASD ECKD device. The returned path group data
allows user space programs to determine path state and
path group ID of the channel paths to the device.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Fri, 29 Oct 2010 14:50:42 +0000 (16:50 +0200)]
[S390] ftrace: select HAVE_C_RECORDMCOUNT
Select HAVE_C_RECORDMCOUNT for the fast C version of recordmcount.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Fri, 29 Oct 2010 14:50:41 +0000 (16:50 +0200)]
[S390] vdso: get rid of redefinition warnings
The CLOCK_* defines in asm-offsets.c are only used for the vdso code
however in the meantime they cause other trouble.
Just rename them to get permanently rid of this:
In file included from /home2/heicarst/linux-2.6/arch/s390/include/asm/asm-offsets.h:1:0,
from arch/s390/mm/fault.c:33:
include/generated/asm-offsets.h:53:0: warning: "CLOCK_REALTIME" redefined
include/linux/time.h:286:0: note: this is the location of the previous definition
include/generated/asm-offsets.h:54:0: warning: "CLOCK_MONOTONIC" redefined
include/linux/time.h:287:0: note: this is the location of the previous definition
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Fri, 29 Oct 2010 14:50:40 +0000 (16:50 +0200)]
[S390] facility detection: remove unused variable
arch/s390/kernel/early.c: In function 'setup_hpage':
arch/s390/kernel/early.c:285:15: warning: unused variable 'facilities'
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Michael Holzheu [Fri, 29 Oct 2010 14:50:39 +0000 (16:50 +0200)]
[S390] hypfs: Fix error handling in hypfs_diag initialization
Fix the following two error handling bugs in hypfs_diag_init():
* No need for calling diag204_free_buffer()
* Initialize name table only in case of LPAR and prevent error message
on non-LPAR systems.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Fri, 29 Oct 2010 14:50:38 +0000 (16:50 +0200)]
[S390] topology: fix cpu masks for topology=off case
Fix cpu masks for 'topology=off' case. Folding of the scheduling domains
happen in such a way that everything belongs to the MC domain instead
of the CPU doimain.
This should fix a performance regression introduced with
eafd2b6d "[S390] topology: use default MC domain initializer" and also
makes sure we have the same behavious as if CONFIG_SCHED_MC was not
selected at all.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Fri, 29 Oct 2010 14:50:37 +0000 (16:50 +0200)]
[S390] topology: add SCHED_MC config option
This allows us to easily check for performance differences seen with
!CONFIG_SCHED_MC and topology=off.
Actually there shouldn't be any (besides a small overhead because of
additional code).
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Fri, 29 Oct 2010 14:50:36 +0000 (16:50 +0200)]
[S390] Kconfig: add machine type number to code generation options
Add machine type number to code generation options. Also clean up and
shorten quite a lot of help texts with respect to machine type and
architecture terminology.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Fri, 29 Oct 2010 14:50:35 +0000 (16:50 +0200)]
[S390] Add z196 machine type to setup_hwcaps
Add machine type for zEnterprise 196 to elf platform detection.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Al Viro [Fri, 29 Oct 2010 09:49:13 +0000 (05:49 -0400)]
braino in internal.h
wrong return type...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Fri, 29 Oct 2010 07:38:12 +0000 (03:38 -0400)]
convert simple cases of nfs-related ->get_sb() to ->mount()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 12:21:33 +0000 (16:21 +0400)]
convert btrfs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 12:17:55 +0000 (16:17 +0400)]
convert ceph
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 12:03:58 +0000 (16:03 +0400)]
convert gfs2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 10:16:21 +0000 (14:16 +0400)]
convert afs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 09:33:36 +0000 (13:33 +0400)]
convert ecryptfs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 09:30:36 +0000 (13:30 +0400)]
convert sysfs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 09:23:11 +0000 (13:23 +0400)]
convert cgroup and cpuset
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 09:16:50 +0000 (13:16 +0400)]
switch get_sb_ns() users
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 09:12:54 +0000 (13:12 +0400)]
switch procfs to ->mount()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 09:09:36 +0000 (13:09 +0400)]
setting ->proc_mnt doesn't belong in proc_get_sb()
take that to kern_mount_data()-using callers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 08:52:33 +0000 (12:52 +0400)]
convert cifs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 08:19:34 +0000 (12:19 +0400)]
convert nilfs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 08:14:03 +0000 (12:14 +0400)]
switch logfs to ->mount()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 08:06:00 +0000 (12:06 +0400)]
logfs: fix a leak in get_sb
a) switch ->put_device() to logfs_super *
b) actually call it on early failures in logfs_get_sb_device()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 07:53:30 +0000 (11:53 +0400)]
logfs get_sb, part 3
take logfs_get_sb_device() calls to logfs_get_sb() itself
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 07:33:39 +0000 (11:33 +0400)]
logfs get_sb, part 2
take setting s_bdev/s_mtd/s_devops to callers of logfs_get_sb_device(),
don't bother passing them separately
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 26 Jul 2010 07:25:05 +0000 (11:25 +0400)]
logfs get_sb massage, part 1
move allocation of logfs_super to logfs_get_sb, pass it to
logfs_get_sb_...().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 25 Jul 2010 19:56:43 +0000 (23:56 +0400)]
convert v9fs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 25 Jul 2010 19:52:42 +0000 (23:52 +0400)]
convert ubifs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 25 Jul 2010 19:47:46 +0000 (23:47 +0400)]
convert get_sb_pseudo() users
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 25 Jul 2010 07:46:36 +0000 (11:46 +0400)]
convert get_sb_nodev() users
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>