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Mathieu Desnoyers [Fri, 6 Mar 2009 15:35:52 +0000 (10:35 -0500)]
tracing, Text Edit Lock - Architecture Independent Code
This is an architecture independant synchronization around kernel text
modifications through use of a global mutex.
A mutex has been chosen so that kprobes, the main user of this, can sleep
during memory allocation between the memory read of the instructions it
must replace and the memory write of the breakpoint.
Other user of this interface: immediate values.
Paravirt and alternatives are always done when SMP is inactive, so there
is no need to use locks.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
LKML-Reference: <
49B142D8.
7020601@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Fri, 6 Mar 2009 15:44:14 +0000 (16:44 +0100)]
Merge branch 'x86/core' into tracing/textedit
Conflicts:
arch/x86/Kconfig
block/blktrace.c
kernel/irq/handle.c
Semantic conflict:
kernel/trace/blktrace.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Fri, 6 Mar 2009 10:39:18 +0000 (11:39 +0100)]
Merge branches 'tracing/ftrace' and 'tracing/function-graph-tracer' into tracing/core
Ingo Molnar [Thu, 5 Mar 2009 20:19:55 +0000 (21:19 +0100)]
tracing: clean up menu
Clean up menu structure, introduce TRACING_SUPPORT switch that signals
whether an architecture supports various instrumentation mechanisms.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Thu, 5 Mar 2009 20:49:47 +0000 (21:49 +0100)]
Merge branch 'x86/uv' into x86/core
Ingo Molnar [Thu, 5 Mar 2009 20:49:44 +0000 (21:49 +0100)]
Merge branch 'x86/doc' into x86/core
Ingo Molnar [Thu, 5 Mar 2009 20:49:35 +0000 (21:49 +0100)]
Merge branch 'x86/mm' into x86/core
Ingo Molnar [Thu, 5 Mar 2009 20:49:25 +0000 (21:49 +0100)]
Merge branch 'x86/mce2' into x86/core
Ingo Molnar [Thu, 5 Mar 2009 20:48:31 +0000 (21:48 +0100)]
Merge branch 'x86/urgent' into x86/core
Conflicts:
arch/x86/include/asm/fixmap_64.h
Semantic merge:
arch/x86/include/asm/fixmap.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Thu, 5 Mar 2009 14:15:44 +0000 (15:15 +0100)]
x86: UV, SGI RTC: add generic system vector, build fix on UP
Make ack_APIC_irq() build on !SMP && !APIC too.
Cc: Dimitri Sivanich <sivanich@sgi.com>
LKML-Reference: <
20090304185605.GA24419@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jeremy Fitzhardinge [Thu, 5 Mar 2009 00:16:51 +0000 (16:16 -0800)]
x86: pre-initialize boot_cpu_data.x86_phys_bits to avoid system_state tests
Impact: cleanup, micro-optimization
Pre-initialize boot_cpu_data.x86_phys_bits to a reasonable default
to remove the use of system_state tests in __virt_addr_valid()
and __phys_addr().
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jeremy Fitzhardinge [Thu, 5 Mar 2009 00:10:44 +0000 (16:10 -0800)]
x86-32: use specific __vmalloc_start_set flag in __virt_addr_valid
Rather than relying on the ever-unreliable system_state,
add a specific __vmalloc_start_set flag to indicate whether
the vmalloc area has meaningful boundaries yet, and use that
in x86-32's __phys_addr and __virt_addr_valid.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jeremy Fitzhardinge [Thu, 5 Mar 2009 01:14:30 +0000 (17:14 -0800)]
x86: clean up old gcc warnings
gcc 3.2.2 reports:
In file included from /usr/src/all/linux-next/arch/x86/include/asm/page.h:8,
from /usr/src/all/linux-next/arch/x86/include/asm/processor.h:18,
from /usr/src/all/linux-next/arch/x86/include/asm/atomic_32.h:6,
from /usr/src/all/linux-next/arch/x86/include/asm/atomic.h:2,
from include/linux/crypto.h:20,
from arch/x86/kernel/asm-offsets_32.c:7,
from arch/x86/kernel/asm-offsets.c:2:
/usr/src/all/linux-next/arch/x86/include/asm/page_types.h:54: warning: parameter has incomplete type
/usr/src/all/linux-next/arch/x86/include/asm/page_types.h:56: warning: parameter has incomplete type
In file included from /usr/src/all/linux-next/arch/x86/include/asm/page.h:8,
from /usr/src/all/linux-next/arch/x86/include/asm/processor.h:18,
from include/linux/prefetch.h:14,
from include/linux/list.h:6,
from include/linux/module.h:9,
from init/main.c:13:
/usr/src/all/linux-next/arch/x86/include/asm/page_types.h:54: warning: parameter has incomplete type
/usr/src/all/linux-next/arch/x86/include/asm/page_types.h:56: warning: parameter has incomplete type
This is a bogus warning, but moving the pat-related functions
into asm/pat.h and including asm/pgtable_types.h should fix it.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Thu, 5 Mar 2009 13:39:03 +0000 (14:39 +0100)]
x86: move init_memory_mapping() to common mm/init.c, build fix on 32-bit PAE
Impact: build fix
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-14-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:08 +0000 (14:55 +0200)]
x86: move function and variable declarations to asm/init.h
Impact: cleanup
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-17-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:07 +0000 (14:55 +0200)]
x86: unify kernel_physical_mapping_init() function signatures
Impact: cleanup
In preparation for moving the function declaration to a header file,
unify 32-bit and 64-bit signatures.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-16-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:06 +0000 (14:55 +0200)]
x86: fix up some bad global variable names in mm/init.c
Impact: cleanup
The table_start, table_end, and table_top are too generic for global
namespace so rename them to be more specific.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-15-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:05 +0000 (14:55 +0200)]
x86: move init_memory_mapping() to common mm/init.c
Impact: cleanup
This patch moves the init_memory_mapping() function to common mm/init.c.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-14-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:04 +0000 (14:55 +0200)]
x86: add stub init_gbpages() for 32-bit init_memory_mapping()
Impact: cleanup
This patch adds an empty static inline init_gbpages() for the 32-bit
version of init_memory_mapping() making both versions identical.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-13-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:03 +0000 (14:55 +0200)]
x86: ifdef 32-bit and 64-bit NR_RANGE_MR for save_mr() unification
Impact: cleanup
As a trivial preparation for moving common code to arc/x86/mm/init.c,
ifdef the 32-bit and 64-bit versions of NR_RANGE_MR.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-12-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:02 +0000 (14:55 +0200)]
x86: ifdef 32-bit and 64-bit pfn setup in init_memory_mapping()
Impact: cleanup
To reduce the diff between the 32-bit and 64-bit versions of
init_memory_mapping(), ifdef configuration specific pfn setup
code in the function.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-11-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:01 +0000 (14:55 +0200)]
x86: ifdef 32-bit and 64-bit setup in init_memory_mapping()
Impact: cleanup
To reduce the diff between the 32-bit and 64-bit versions of
init_memory_mapping(), ifdef configuration specific setup code
in the function.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-10-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:55:00 +0000 (14:55 +0200)]
x86: add table start and end sanity checks to 32-bit init_memory_mapping()
Impact: cleanup
This patch adds a sanity check to the 32-bit version of
init_memory_mapping() to reduce the diff to the 64-bit version.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-9-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:54:59 +0000 (14:54 +0200)]
x86: unify kernel_physical_mapping_init() call in init_memory_mapping()
Impact: cleanup
The 64-bit version of init_memory_mapping() uses the last mapped
address returned from kernel_physical_mapping_init() whereas the
32-bit version doesn't. This patch adds relevant ifdefs to both
versions of the function to reduce the diff between them.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-8-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:54:58 +0000 (14:54 +0200)]
x86: rename after_init_bootmem to after_bootmem in mm/init_32.c
Impact: cleanup
This patch renames after_init_bootmem to after_bootmem in
mm/init_32.c to reduce the diff to the 64-bit version of of
init_memory_mapping().
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-7-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:54:57 +0000 (14:54 +0200)]
x86: remove unnecessary save_mr() sanity check
Impact: cleanup
The save_mr() function already checks that start_pfn is less than
end_pfn so we can remove the unnecessary check which reduces the
diff between the 32-bit and the 64-bit versions of init_memory_mapping().
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-6-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:54:56 +0000 (14:54 +0200)]
x86: ifdef 32-bit specific setup in init_memory_mapping()
Impact: cleanup
Enabling NX, PSE, and PGE are only required on 32-bit so ifdef them
in both versions of the function.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-5-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:54:55 +0000 (14:54 +0200)]
x86: move pgd_base out of init_memory_mapping()
Impact: cleanup
This patch moves pgd_base out of init_memory_mapping() to reduce
the diff between the 32-bit version and the 64-bit version of the
function.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-4-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:54:54 +0000 (14:54 +0200)]
x86: find_early_table_space() unification
Impact: cleanup
There are some minor differences between the 32-bit and 64-bit
find_early_table_space() functions. This patch wraps those
differences under CONFIG_X86_32 to make the function identical
on both configurations.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-3-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:54:53 +0000 (14:54 +0200)]
x86: add gbpages support to 32-bit init_memory_mapping()
Impact: cleanup
To reduce the diff between the 32-bit and 64-bit versions of
init_memory_mapping(), add gbpages support to the 32-bit version.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-2-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Thu, 5 Mar 2009 12:54:52 +0000 (14:54 +0200)]
x86: init_memory_mapping() trivial cleanups
Impact: cleanup
To reduce the diff between the 32-bit and 64-bit versions of
init_memory_mapping(), fix up all trivial issues.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236257708-27269-1-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Frederic Weisbecker [Thu, 5 Mar 2009 00:49:22 +0000 (01:49 +0100)]
tracing/function-graph-tracer: use the more lightweight local clock
Impact: decrease hangs risks with the graph tracer on slow systems
Since the function graph tracer can spend too much time on timer
interrupts, it's better now to use the more lightweight local
clock. Anyway, the function graph traces are more reliable on a
per cpu trace.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
49af243d.
06e9300a.53ad.
ffff840c@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Dimitri Sivanich [Wed, 4 Mar 2009 22:02:46 +0000 (16:02 -0600)]
x86: UV, SGI RTC: fix uv_time.c for UP
Fix non-smp build of uv_time.c.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
LKML-Reference: <
20090304220246.GC6288@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Thu, 5 Mar 2009 00:11:35 +0000 (16:11 -0800)]
x86/doc: mini-howto for using earlyprintk=dbgp
[ mingo: small edits and extensions. ]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Greg KH <gregkh@suse.de>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sarah Sharp <sarah.a.sharp@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <
49AF18B7.
4050305@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Thu, 5 Mar 2009 09:28:45 +0000 (10:28 +0100)]
tracing: move utility functions from ftrace.h to kernel.h
Make common utility functions such as trace_printk() and
tracing_start()/tracing_stop() generally available to kernel
code.
Cc: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Thu, 5 Mar 2009 09:24:48 +0000 (10:24 +0100)]
tracing: rename ftrace_printk() => trace_printk()
Impact: cleanup
Use a more generic name - this also allows the prototype to move
to kernel.h and be generally available to kernel developers who
want to do some quick tracing.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Thu, 5 Mar 2009 09:21:49 +0000 (10:21 +0100)]
Merge branch 'tip/tracing/ftrace' of git://git./linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace
Ingo Molnar [Thu, 5 Mar 2009 09:20:47 +0000 (10:20 +0100)]
Merge branch 'tracing/ftrace' into tracing/core
Steven Rostedt [Thu, 5 Mar 2009 03:15:30 +0000 (22:15 -0500)]
tracing: have latency tracers set the latency format
The latency tracers (irqsoff, preemptoff, preemptirqsoff, and wakeup)
are pretty useless with the default output format. This patch makes them
automatically enable the latency format when they are selected. They
also record the state of the latency option, and if it was not enabled
when selected, they disable it on reset.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Thu, 5 Mar 2009 02:57:29 +0000 (21:57 -0500)]
tracing: consolidate print_lat_fmt and print_trace_fmt
Impact: clean up
Both print_lat_fmt and print_trace_fmt do pretty much the same thing
except for one different function call. This patch consolidates the
two functions and adds an if statement to perform the difference.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Thu, 5 Mar 2009 02:42:04 +0000 (21:42 -0500)]
tracing: remove extra latency_trace method from trace structure
Impact: clean up
The trace and latency_trace function pointers are identical for
every tracer but the function tracer. The differences in the function
tracer are trivial (latency output puts paranthesis around parent).
This patch removes the latency_trace pointer and all prints will
now just use the trace output function pointer.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Thu, 5 Mar 2009 01:34:24 +0000 (20:34 -0500)]
tracing: add latency output format option
With the removal of the latency_trace file, we lost the ability
to see some of the finer details in a trace. Like the state of
interrupts enabled, the preempt count, need resched, and if we
are in an interrupt handler, softirq handler or not.
This patch simply creates an option to bring back the old format.
This also removes the warning about an unused variable that held
the latency_trace file operations.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Thu, 5 Mar 2009 01:31:11 +0000 (20:31 -0500)]
tracing: fix seq read from trace files
The buffer used by trace_seq was updated incorrectly. Instead
of consuming what was actually read, it consumed the rest of the
buffer on reads.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Thu, 5 Mar 2009 00:10:05 +0000 (19:10 -0500)]
tracing: do not return EFAULT if read copied anything
Impact: fix trace read to conform to standards
Andrew Morton, Theodore Tso and H. Peter Anvin brought to my attention
that a userspace read should not return -EFAULT if it succeeded in
copying anything. It should only return -EFAULT if it failed to copy
at all.
This patch modifies the check of copy_from_user and updates the return
code appropriately.
I also used H. Peter Anvin's short cut rule to just test ret == count.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Wed, 4 Mar 2009 04:52:42 +0000 (23:52 -0500)]
ring-buffer: fix timestamp in partial ring_buffer_page_read
If a partial ring_buffer_page_read happens, then some of the
incremental timestamps may be lost. This patch writes the
recent timestamp into the page that is passed back to the caller.
A partial ring_buffer_page_read is where the full page would not
be written back to the user, and instead, just part of the page
is copied to the user. A full page would be a page swap with the
ring buffer and the timestamps would be correct.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Wed, 4 Mar 2009 23:20:36 +0000 (18:20 -0500)]
tracing: add cpu_file intialization for ftrace_dump
Impact: fix to ftrace_dump output corruption
The commit:
b04cc6b1f6398b0e0b60d37e27ce51b4899672ec
tracing/core: introduce per cpu tracing files
added a new field to the iterator called cpu_file. This was a handle
to differentiate between the per cpu trace output files and the
all cpu "trace" file. The all cpu "trace" file required setting this
to TRACE_PIPE_ALL_CPU.
The problem is that the ftrace_dump sets up its own iterator but was
not updated to handle this change. The result was only CPU 0 printing
out on crash and a lot of "<0>"'s also being printed.
Reported-by: Thomas Gleixner <tglx@linuxtronix.de>
Tested-by: Darren Hart <dvhtc@us.ibm.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Yinghai Lu [Wed, 4 Mar 2009 20:21:24 +0000 (12:21 -0800)]
x86: fix bootmem cross node for 32bit numa, cleanup
Impact: clean up
Simplify the code, reuse some lines.
Remove min_low_pfn reference, it is always 0
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <
49AEE2C4.
2030602@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Wed, 4 Mar 2009 09:13:40 +0000 (11:13 +0200)]
x86: move free_initrd_mem() to common mm/init.c
Impact: cleanup
The function is identical on 32-bit and 64-bit configurations so move it to the
common mm/init.c file.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <
1236158020.29024.28.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Leann Ogasawara [Wed, 4 Mar 2009 19:53:00 +0000 (11:53 -0800)]
x86: add Dell XPS710 reboot quirk
Dell XPS710 will hang on reboot. This is resolved by adding a quirk to
set bios reboot.
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Cc: "manoj.iyer" <manoj.iyer@canonical.com>
Cc: <stable@kernel.org>
LKML-Reference: <
1236196380.3231.89.camel@emiko>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Wed, 4 Mar 2009 09:25:54 +0000 (01:25 -0800)]
x86: reserve exact size of mptable
Impact: save a bit of RAM
Get the exact size for the reserve_bootmem() call.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <
49AE4922.605@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Wed, 4 Mar 2009 09:25:21 +0000 (01:25 -0800)]
x86: ioremap mptable
Impact: fix boot with mptable above max_low_mapped
Try to use early_ioremap() to map MPC to make sure it works even it is
at the end of ram.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <
49AE4901.
3090801@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Reported-and-tested-by: Kevin O'Connor <kevin@koconnor.net>
Yinghai Lu [Wed, 4 Mar 2009 09:24:04 +0000 (01:24 -0800)]
x86: make 32-bit init_memory_mapping range change more like 64-bit
Impact: cleanup
make code more readable and more like 64-bit
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <
49AE48B4.
8010907@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Wed, 4 Mar 2009 09:22:35 +0000 (01:22 -0800)]
x86: fix bootmem cross node for 32bit numa
Impact: fix panic on system 2g x4 sockets
Found one system with 4 sockets and every sockets has 2g can not boot
with numa32 because boot mem is crossing nodes.
So try to have numa version of setup_bootmem_allocator().
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <
49AE485B.
8000902@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Daniel Glöckner [Wed, 4 Mar 2009 18:42:27 +0000 (19:42 +0100)]
x86, math-emu: fix init_fpu for task != current
Impact: fix math-emu related crash while using GDB/ptrace
init_fpu() calls finit to initialize a task's xstate, while finit always
works on the current task. If we use PTRACE_GETFPREGS on another
process and both processes did not already use floating point, we get
a null pointer exception in finit.
This patch creates a new function finit_task that takes a task_struct
parameter. finit becomes a wrapper that simply calls finit_task with
current. On the plus side this avoids many calls to get_current which
would each resolve to an inline assembler mov instruction.
An empty finit_task has been added to i387.h to avoid linker errors in
case the compiler still emits the call in init_fpu when
CONFIG_MATH_EMULATION is not defined.
The declaration of finit in i387.h has been removed as the remaining
code using this function gets its prototype from fpu_proto.h.
Signed-off-by: Daniel Glöckner <dg@emlix.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "Pallipadi Venkatesh" <venkatesh.pallipadi@intel.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Bill Metzenthen <billm@melbpc.org.au>
LKML-Reference: <E1Lew31-0004il-Fg@mailer.emlix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Dimitri Sivanich [Wed, 4 Mar 2009 18:59:18 +0000 (12:59 -0600)]
x86: UV, SGI RTC: add UV RTC clocksource/clockevents
This patch provides a high resolution clock/timer source using the
SGI UV system-wide synchronized RTC clock/timer hardware.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: john stultz <johnstul@us.ibm.com>
LKML-Reference: <
20090304185918.GC24419@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Dimitri Sivanich [Wed, 4 Mar 2009 18:57:19 +0000 (12:57 -0600)]
x86: UV, SGI RTC: loop through installed UV blades
Add macro to loop through each possible blade.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: john stultz <johnstul@us.ibm.com>
LKML-Reference: <
20090304185719.GB24419@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Dimitri Sivanich [Wed, 4 Mar 2009 18:56:05 +0000 (12:56 -0600)]
x86: UV, SGI RTC: add generic system vector
This patch allocates a system interrupt vector for various platform
specific uses.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: john stultz <johnstul@us.ibm.com>
LKML-Reference: <
20090304185605.GA24419@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Wed, 4 Mar 2009 19:20:10 +0000 (20:20 +0100)]
Merge branch 'x86/urgent' into x86/mm
Conflicts:
arch/x86/include/asm/fixmap_64.h
Semantic merge:
arch/x86/include/asm/fixmap.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Huang Ying [Wed, 4 Mar 2009 02:58:33 +0000 (10:58 +0800)]
x86: EFI: Back efi_ioremap with init_memory_mapping instead of FIX_MAP
Impact: Fix boot failure on EFI system with large runtime memory range
Brian Maly reported that some EFI system with large runtime memory
range can not boot. Because the FIX_MAP used to map runtime memory
range is smaller than run time memory range.
This patch fixes this issue by re-implement efi_ioremap() with
init_memory_mapping().
Reported-and-tested-by: Brian Maly <bmaly@redhat.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Brian Maly <bmaly@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
1236135513.6204.306.camel@yhuang-dev.sh.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Wed, 4 Mar 2009 08:16:07 +0000 (10:16 +0200)]
x86: set_highmem_pages_init() cleanup, #2
Impact: cleanup
The zones are set up at this stage so there's a highmem zone
available even for the UMA case.
The only difference there is that for machines that have
CONFIG_HIGHMEM enabled but don't have any highmem available,
->zone_start_pfn is zero whereas highstart_pfn is non-zero).
The field is left zeroed because of the !size test in
free_area_init_core() but shouldn't be a problem because
add_highpages_with_active_regions() handles empty ranges just
fine.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Mel Gorman <mel@csn.ul.ie>
LKML-Reference: <
1236154567.29024.23.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Brian Maly [Wed, 4 Mar 2009 02:55:31 +0000 (21:55 -0500)]
x86: fix DMI on EFI
Impact: reactivate DMI quirks on EFI hardware
DMI tables are loaded by EFI, so the dmi calls must happen after
efi_init() and not before.
Currently Apple hardware uses DMI to determine the framebuffer mappings
for efifb. Without DMI working you also have no video on MacBook Pro.
This patch resolves the DMI issue for EFI hardware (DMI is now properly
detected at boot), and additionally efifb now loads on Apple hardware
(i.e. video works).
Signed-off-by: Brian Maly <bmaly@redhat>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: ying.huang@intel.com
LKML-Reference: <
49ADEDA3.
1030406@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/setup.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Peter Zijlstra [Wed, 4 Mar 2009 11:32:55 +0000 (12:32 +0100)]
tracing: add lockdep tracepoints for lock acquire/release
Augment the traces with lock names when lockdep is available:
1) | down_read_trylock() {
1) | _spin_lock_irqsave() {
1) | /* lock_acquire: &sem->wait_lock */
1) 4.201 us | }
1) | _spin_unlock_irqrestore() {
1) | /* lock_release: &sem->wait_lock */
1) 3.523 us | }
1) | /* lock_acquire: try read &mm->mmap_sem */
1) + 13.386 us | }
1) 1.635 us | find_vma();
1) | handle_mm_fault() {
1) | __do_fault() {
1) | filemap_fault() {
1) | find_lock_page() {
1) | find_get_page() {
1) | /* lock_acquire: read rcu_read_lock */
1) | /* lock_release: rcu_read_lock */
1) 5.697 us | }
1) 8.158 us | }
1) + 11.079 us | }
1) | _spin_lock() {
1) | /* lock_acquire: __pte_lockptr(page) */
1) 3.949 us | }
1) 1.460 us | page_add_file_rmap();
1) | _spin_unlock() {
1) | /* lock_release: __pte_lockptr(page) */
1) 3.115 us | }
1) | unlock_page() {
1) 1.421 us | page_waitqueue();
1) 1.220 us | __wake_up_bit();
1) 6.519 us | }
1) + 34.328 us | }
1) + 37.452 us | }
1) | up_read() {
1) | /* lock_release: &mm->mmap_sem */
1) | _spin_lock_irqsave() {
1) | /* lock_acquire: &sem->wait_lock */
1) 3.865 us | }
1) | _spin_unlock_irqrestore() {
1) | /* lock_release: &sem->wait_lock */
1) 8.562 us | }
1) + 17.370 us | }
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: =?ISO-8859-1?Q?T=F6r=F6k?= Edwin <edwintorok@gmail.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <
1236166375.5330.7209.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Wed, 4 Mar 2009 17:49:19 +0000 (18:49 +0100)]
Merge branch 'core/locking' into tracing/ftrace
Peter Zijlstra [Wed, 4 Mar 2009 11:27:27 +0000 (12:27 +0100)]
lockdep: require framepointers for x86
Require framepointers for x86, because otherwise we'll be having
empty stack traces, which is useless.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <
1236167295.5330.7240.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Peter Zijlstra [Wed, 4 Mar 2009 13:53:24 +0000 (14:53 +0100)]
lockdep: remove extra "irq" string
Impact: clarify lockdep printk text
print_irq_inversion_bug() gets handed state strings of the form
"HARDIRQ", "SOFTIRQ", "RECLAIM_FS"
and appends "-irq-{un,}safe" to them, which is either redudant for *IRQ or
confusing in the RECLAIM_FS case.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <
1236175192.5330.7585.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Peter Zijlstra [Wed, 4 Mar 2009 12:51:13 +0000 (13:51 +0100)]
lockdep: fix incorrect state name
In the recent mark_lock_irq() rework a bug snuck in that would report the
state of write locks causing irq inversion under a read lock as a read
lock.
Fix this by masking the read bit of the state when validating write
dependencies.
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <
1236172646.5330.7450.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Linus Torvalds [Wed, 4 Mar 2009 15:49:07 +0000 (07:49 -0800)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Run sbc610 USB fixup code only on the appropriate platform.
Helge Bahmann [Wed, 4 Mar 2009 11:49:14 +0000 (21:49 +1000)]
drm: fix double lock typo
[airlied: you shall not retype patches from other trees half asleep]
Signed-of-by: Dave Airlie <airlied@redhat.com>
Ingo Molnar [Wed, 4 Mar 2009 10:47:17 +0000 (11:47 +0100)]
x86, mce: fix build failure in arch/x86/kernel/cpu/mcheck/threshold.c
Impact: build fix
The APIC code rewrite in the x86 tree broke the x86/mce branch:
arch/x86/kernel/cpu/mcheck/threshold.c: In function ‘mce_threshold_interrupt’:
arch/x86/kernel/cpu/mcheck/threshold.c:24: error: implicit declaration of function ‘ack_APIC_irq’
Also tidy up the file a bit while at it.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Wed, 4 Mar 2009 09:46:40 +0000 (11:46 +0200)]
x86: move devmem_is_allowed() to common mm/init.c
Impact: cleanup
The function is identical on 32-bit and 64-bit configurations so move
it to the common mm/init.c file.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <
1236160001.29024.29.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Wed, 4 Mar 2009 10:15:42 +0000 (11:15 +0100)]
Merge branch 'rfc/splice/tip/tracing/ftrace' of git://git./linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace
Ingo Molnar [Wed, 4 Mar 2009 10:14:47 +0000 (11:14 +0100)]
Merge branch 'tracing/ftrace'; commit 'v2.6.29-rc7' into tracing/core
Tony Breeds [Tue, 3 Mar 2009 17:59:30 +0000 (17:59 +0000)]
powerpc: Run sbc610 USB fixup code only on the appropriate platform.
commit
a969e76a7101bf5f3d369563df1ca1253dd6131b (powerpc: Correct USB
support for GE Fanuc SBC610) introduced a fixup for NEC usb controllers.
This fixup should only run on GEF SBC610 boards.
Fixes Fedora bug #486511.
(https://bugzilla.redhat.com/show_bug.cgi?id=486511)
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
H. Peter Anvin [Wed, 4 Mar 2009 05:05:42 +0000 (21:05 -0800)]
Merge branch 'x86/core' into x86/mce2
Steven Rostedt [Tue, 2 Dec 2008 03:20:19 +0000 (22:20 -0500)]
tracing: add binary buffer files for use with splice
Impact: new feature
This patch creates a directory of files that correspond to the
per CPU ring buffers. These are binary files and are made to
be used with splice. This is the fastest way to extract data from
the ftrace ring buffers.
Thanks to Jiaying Zhang for pushing me to get this code fixed,
and to Eduard - Gabriel Munteanu for his splice code that helped
me debug my code.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Wed, 4 Mar 2009 00:51:40 +0000 (19:51 -0500)]
ring-buffer: make ring_buffer_read_page read from start on partial page
Impact: dont leave holes in read buffer page
The ring_buffer_read_page swaps a given page with the reader page
of the ring buffer, if certain conditions are set:
1) requested length is big enough to hold entire page data
2) a writer is not currently on the page
3) the page is not partially consumed.
Instead of swapping with the supplied page. It copies the data to
the supplied page instead. But currently the data is copied in the
same offset as the source page. This causes a hole at the start
of the reader page. This complicates the use of this function.
Instead, it should copy the data at the beginning of the function
and update the index fields accordingly.
Other small clean ups are also done in this patch.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Tue, 3 Mar 2009 18:53:07 +0000 (13:53 -0500)]
ring-buffer: replace sizeof of event header with offsetof
Impact: fix to possible alignment problems on some archs.
Some arch compilers include an NULL char array in the sizeof field.
Since the ring_buffer_event type includes one of these, it is better
to use the "offsetof" instead, to avoid strange bugs on these archs.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Tue, 3 Mar 2009 05:27:49 +0000 (00:27 -0500)]
ring-buffer: fix ring_buffer_read_page
The ring_buffer_read_page was broken if it were to only copy part
of the page. This patch fixes that up as well as adds a parameter
to allow a length field, in order to only copy part of the buffer page.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Steven Rostedt [Tue, 3 Mar 2009 01:56:48 +0000 (20:56 -0500)]
ring-buffer: reset write field for ring_buffer_read_page
Impact: fix ring_buffer_read_page
After a page is swapped into the ring buffer, the write field must
also be reset.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Jeremy Fitzhardinge [Tue, 3 Mar 2009 20:02:57 +0000 (12:02 -0800)]
x86: un-__init fill_pud/pmd/pte
They are used by __set_fixmap->set_pte_vaddr_pud, which can
be used by arch_setup_additional_pages(), and so is used
after init.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jeremy Fitzhardinge [Tue, 3 Mar 2009 19:51:39 +0000 (11:51 -0800)]
x86: remove vestigial fix_ioremap prototypes
The function seems to have disappeared at some point, leaving
some vestigial prototypes behind...
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Wed, 4 Mar 2009 01:29:19 +0000 (02:29 +0100)]
Merge branch 'x86/core' into core/percpu
Ingo Molnar [Wed, 4 Mar 2009 01:22:31 +0000 (02:22 +0100)]
Merge branches 'x86/apic', 'x86/cpu', 'x86/fixmap', 'x86/mm', 'x86/sched', 'x86/setup-lzma', 'x86/signal' and 'x86/urgent' into x86/core
Linus Torvalds [Wed, 4 Mar 2009 01:05:22 +0000 (17:05 -0800)]
Linux 2.6.29-rc7
Linus Torvalds [Wed, 4 Mar 2009 01:05:08 +0000 (17:05 -0800)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: ixp4xx - Fix qmgr_request_queue build failure
crypto: api - Fix module load deadlock with fallback algorithms
Krzysztof Hałasa [Wed, 4 Mar 2009 00:01:22 +0000 (08:01 +0800)]
crypto: ixp4xx - Fix qmgr_request_queue build failure
There is another user of IXP4xx queue manager, fix it.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linus Torvalds [Tue, 3 Mar 2009 22:33:20 +0000 (14:33 -0800)]
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: don't allow setuid to succeed if the user does not have rt bandwidth
sched_rt: don't start timer when rt bandwidth disabled
Linus Torvalds [Tue, 3 Mar 2009 22:32:55 +0000 (14:32 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: oprofile: don't set counter width from cpuid on Core2
x86: fix init_memory_mapping() to handle small ranges
Linus Torvalds [Tue, 3 Mar 2009 22:32:37 +0000 (14:32 -0800)]
Merge branch 'tracing/mmiotrace' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'tracing/mmiotrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86 mmiotrace: fix race with release_kmmio_fault_page()
x86 mmiotrace: improve handling of secondary faults
x86 mmiotrace: split set_page_presence()
x86 mmiotrace: fix save/restore page table state
x86 mmiotrace: WARN_ONCE if dis/arming a page fails
x86: add far read test to testmmiotrace
x86: count errors in testmmiotrace.ko
Linus Torvalds [Tue, 3 Mar 2009 22:32:04 +0000 (14:32 -0800)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
rcu: Teach RCU that idle task is not quiscent state at boot
Linus Torvalds [Tue, 3 Mar 2009 22:12:41 +0000 (14:12 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] fix lots of ARM __devexit sillyness
[ARM] 5417/1: Set the correct cacheid for ARMv6 CPUs with ARMv7 style MMU
[ARM] 5416/1: Use unused address in v6_early_abort
[ARM] 5411/1: S3C64XX: Fix EINT unmask
[ARM] at91: fix for Atmel AT91 powersaving
[ARM] RiscPC: Fix etherh oops
Russell King [Tue, 3 Mar 2009 13:43:47 +0000 (13:43 +0000)]
[ARM] fix lots of ARM __devexit sillyness
`iop_adma_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`mv_xor_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`mv64xxx_i2c_unmap_regs' referenced in section `.devinit.text' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`mv64xxx_i2c_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`orion_nand_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
`pxafb_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Ingo Molnar [Tue, 3 Mar 2009 15:02:16 +0000 (16:02 +0100)]
Merge branch 'tip/tracing/ftrace' of git://git./linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace
Steven Rostedt [Tue, 3 Mar 2009 14:43:50 +0000 (09:43 -0500)]
tracing: fix return value to registering events
The registering of events had the return value check backwards.
A zero returned is success, the check had it as a failure.
This patch also fixes a missing "\n" in the warning that the check
failed.
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Ingo Molnar [Tue, 3 Mar 2009 14:32:24 +0000 (15:32 +0100)]
x86: set_highmem_pages_init() cleanup, fix !CONFIG_NUMA && CONFIG_HIGHMEM=y
Impact: build fix
arch/x86/mm/highmem_32.c:187: error: static declaration of 'set_highmem_pages_init' follows non-static declaration
arch/x86/include/asm/numa_32.h:8: error: previous declaration of 'set_highmem_pages_init' was here
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <
1236082212.2675.24.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Tue, 3 Mar 2009 12:10:12 +0000 (14:10 +0200)]
x86: set_highmem_pages_init() cleanup
Impact: cleanup
This patch moves set_highmem_pages_init() to arch/x86/mm/highmem_32.c.
The declaration of the function is kept in asm/numa_32.h because
asm/highmem.h is included only if CONFIG_HIGHMEM is enabled so we
can't put the empty static inline function there.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <
1236082212.2675.24.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Catalin Marinas [Tue, 3 Mar 2009 10:44:12 +0000 (11:44 +0100)]
[ARM] 5417/1: Set the correct cacheid for ARMv6 CPUs with ARMv7 style MMU
The cacheid_init() function assumes that if cpu_architecture() returns
7, the caches are VIPT_NONALIASING. The cpu_architecture() function
returns the version of the supported MMU features (e.g. TEX remapping)
but it doesn't make any assumptions about the cache type. The patch adds
the checking of the Cache Type Register for the ARMv7 format.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Seth Forshee [Mon, 2 Mar 2009 21:39:36 +0000 (22:39 +0100)]
[ARM] 5416/1: Use unused address in v6_early_abort
The target of the strex instruction to clear the exlusive monitor
is currently the top of the stack. If the store succeeeds this
corrupts r0 in pt_regs. Use the next stack location instead of
the current one to prevent any chance of corrupting an in-use
address.
Signed-off-by: Seth Forshee <seth.forshee@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Pekka Enberg [Tue, 3 Mar 2009 11:15:06 +0000 (13:15 +0200)]
x86: unify free_init_pages() and free_initmem()
Impact: unification
This patch introduces a common arch/x86/mm/init.c and moves the identical
free_init_pages() and free_initmem() functions to the file.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <
1236078906.2675.18.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pekka Enberg [Tue, 3 Mar 2009 11:15:04 +0000 (13:15 +0200)]
x86: make sure initmem is writable on 64-bit
Impact: unification
This patch ports commit
3c1df68b848b39270752ff8d4b956cc4a4dce0f6 ("x86: make
sure initmem is writable") to the 64-bit version to unify implementations of
free_init_pages().
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Arjan van de Ven <arjan@linux.intel.com>
LKML-Reference: <
1236078904.2675.17.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>