On 20.01.11 13:57:17, Ari Kauppi wrote:
> This patchset re-enables ARM backtraces with non-PMU capable CPUs.
>
> In V2 I have tried to address the comments received for the V1
> patches. arch/sh/oprofile/common.c is untouched but should work
> as earlier.
>
> Compile tested with arm/omap2plus_defconfig (with and without
> CONFIG_HW_PERF_EVENTS).
>
> Ari Kauppi (3):
> oprofile: Use CONFIG_HW_PERF_EVENTS for oprofile_perf_init and
> friends
> oprofile: Provide stubs for oprofile_perf_{init,exit}
> ARM: oprofile: Always allow backtraces
>
> arch/arm/oprofile/common.c | 12 ++----------
> include/linux/oprofile.h | 13 +++++++++++--
> 2 files changed, 13 insertions(+), 12 deletions(-)
Applied to oprofile/urgent, thanks Ari.
I squashed patch 2 and 3 and modified the commit messages (see below).
Added to .37-stable.
-Robert
commit d14dd7e20d5e526557f5d3cfef4046a642f80924
Author: Ari Kauppi <kauppi@xxxxxxxxxxxx>
Date: Thu Jan 20 13:57:19 2011 -0500
ARM: oprofile: Fix backtraces in timer mode
Always allow backtraces when using oprofile on ARM, even if a PMU
isn't present. Restores functionality originally introduced in commit
1b7b56982fdcd9d85effd76f3928cf5d6eb26155 ("oprofile: Always allow
backtraces on ARM") by Richard Purdie.
It is not that obvious, but there is now only one oprofile_arch_init()
function. So the .backtrace callback is available also in timer mode.
Implemented by removing code and using stubs for oprofile_perf_{init,
exit} provided by <linux/oprofile.h>. This allows cleaning of other
architecture specific implementations too.
Cc: stable@xxxxxxxxxx # 37.x
Signed-off-by: Ari Kauppi <kauppi@xxxxxxxxxxxx>
Acked-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Robert Richter <robert.richter@xxxxxxx>
commit 1ea1bdf7faa4d0b5293e605f2e1ef1c2c59f6b53
Author: Ari Kauppi <kauppi@xxxxxxxxxxxx>
Date: Thu Jan 20 13:57:18 2011 -0500
oprofile: Fix usage of CONFIG_HW_PERF_EVENTS for oprofile_perf_init and friends
The implementations are flagged in Makefile with CONFIG_HW_PERF_EVENTS
instead of CONFIG_PERF_EVENTS.
Cc: stable@xxxxxxxxxx # 37.x
Signed-off-by: Ari Kauppi <kauppi@xxxxxxxxxxxx>
Signed-off-by: Robert Richter <robert.richter@xxxxxxx>
--
Advanced Micro Devices, Inc.
Operating System Research Center
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