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2010-05-17ARM: 6074/1: oprofile: convert from sysdev to platform deviceWill Deacon
This is a reworking of an original patch posted by Aaro Koskinen: oprofile does not work with PM, because sysdev_suspend() is done with interrupts disabled and oprofile needs a mutex. Implementing oprofile as a platform device solves this problem. Cc: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-05-17ARM: 6072/1: oprofile: use perf-events framework as backendWill Deacon
There are currently two hardware performance monitoring subsystems in the kernel for ARM: OProfile and perf-events. This creates the following problems: 1.) Duplicate PMU accessor code. Inevitable code drift may lead to bugs in one framework that are fixed in the other. 2.) Locking issues. OProfile doesn't reprogram hardware counters between profiling runs if the events to be monitored have not been changed. This means that other profiling frameworks cannot use the counters if OProfile is in use. 3.) Due to differences in the two frameworks, it may not be possible to compare the results obtained by OProfile with those obtained by perf. This patch removes the OProfile PMU driver code and replaces it with calls to perf, therefore solving the issues mentioned above. The only userspace-visible change is the lack of SCU counter support for 11MPCore. This is currently unsupported by OProfile userspace tools anyway and therefore shouldn't cause any problems. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Cc: Jamie Iles <jamie.iles@picochip.com> Cc: Jean Pihet <jpihet@mvista.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-01[ARM] 5195/1: ARMv7 Oprofile supportJean PIHET
Add Oprofile kernel support for ARMv7. Tested on OMAP3430 and OMAP3530 chipsets (Cortex-A8). Signed-off-by: Jean Pihet <jpihet@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-24Driver core: change sysdev classes to use dynamic kobject namesKay Sievers
All kobjects require a dynamically allocated name now. We no longer need to keep track if the name is statically assigned, we can just unconditionally free() all kobject names on cleanup. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-02[ARM] 4237/2: oprofile: Always allow backtraces on ARMRichard Purdie
Always allow backtrace when using oprofile on ARM, even if a PMU isn't present. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-06[ARM] oprofile: add ARM11 SMP supportRussell King
Add the glue for ARM11 SMP oprofile support, which also supports the performance monitor in the coherency unit. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-06[ARM] oprofile: add ARM11 UP supportRussell King
Add oprofile glue for ARM11 (ARMv6) oprofile support. This connects the ARM11 core profiling support to the oprofile code for uniprocessor configurations. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21[ARM] Use kcalloc to allocate counter_config array rather than kmallocRussell King
We need this to be zero initialised. Since this is an array, use kcalloc rather than kzalloc or kmalloc. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21[ARM] Oprofile: dynamically allocate counter_configRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21[ARM] Oprofile: Convert semaphore to mutexRussell King
op_arm_sem is being used as a mutex, so convert it to use real mutexes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-01[ARM] 3295/1: Fix oprofile init return valueRuss Dill
Patch from Russ Dill The oprofile init code was broken in commit c6b9da. The new logic will always return -ENODEV. This fixes oprofile_arch_init to return 0 on success, and return the return value of spec->init() if applicable. Signed-off-by: Russ Dill <Russ.Dill@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28[ARM] 4/4 Combine oprofile common and init codeRussell King
There is nothing special about having the init code separate from the common code, so combine the two. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28[ARM] 3/4 Rename common oprofile codeRussell King
The common oprofile code assumes the name "PMU" (from Intel's performance management unit). This is misleading when we start adding oprofile support for other machine types which don't use the same terminology. Call it op_arm_* instead of pmu_*. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28[ARM] 2/4 Fix oprofile suspend/resumeRussell King
The oprofile suspend/resume was missing locking. If we failed to start oprofile on resume, we still reported that it was enabled. Instead, disable oprofile on error. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28[ARM] 1/4 Move oprofile driver model codeRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!