diff options
author | Kan Liang <[email protected]> | 2016-04-21 02:30:10 -0700 |
---|---|---|
committer | Ingo Molnar <[email protected]> | 2016-04-28 10:32:43 +0200 |
commit | cf3beb7c90a8efa16a06b26634cddddc92bb819c (patch) | |
tree | 8cb7d0af1c321b95254c0371cf1fbc4c6f473894 /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
parent | 1c5ac21a0e9bab7fc45d0ba9e11623e9ad99d02e (diff) |
perf/x86/intel: Fix incorrect lbr_sel_mask value
This patch fixes a bug which was introduced by:
b16a5b52eb90 ("perf/x86: Add option to disable reading branch flags/cycles")
In this patch, lbr_sel_mask is used to mask the lbr_select. But LBR_SEL_MASK
doesn't include the bit for LBR_CALL_STACK. So LBR call stack will never be
set in lbr_select.
This patch corrects the LBR_SEL_MASK by including all valid bits in
LBR_SELECT. Also, the LBR_CALL_STACK bit is different as other bit in
LBR_SELECT. It does not operate in suppress mode, so it needs to be
specially handled in intel_pmu_setup_hw_lbr_filter.
Signed-off-by: Kan Liang <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vince Weaver <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
0 files changed, 0 insertions, 0 deletions