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authorKan Liang <[email protected]>2016-04-21 02:30:10 -0700
committerIngo Molnar <[email protected]>2016-04-28 10:32:43 +0200
commitcf3beb7c90a8efa16a06b26634cddddc92bb819c (patch)
tree8cb7d0af1c321b95254c0371cf1fbc4c6f473894 /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
parent1c5ac21a0e9bab7fc45d0ba9e11623e9ad99d02e (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