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author | Yunying Sun <yunying.sun@intel.com> | 2019-07-24 16:29:32 +0800 |
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committer | Ingo Molnar <mingo@kernel.org> | 2019-07-25 15:41:30 +0200 |
commit | 3b238a64c3009fed36eaea1af629d9377759d87d (patch) | |
tree | ebcf116303edd209d9a1b2b53d3479eae470ce02 /drivers/gpu/drm/omapdrm/omap_irq.c | |
parent | 3d0c3953601d250175c7684ec0d9df612061dae5 (diff) |
perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register
The Intel SDM states that bit 13 of Icelake's MSR_OFFCORE_RSP_x
register is valid, and used for counting hardware generated prefetches
of L3 cache. Update the bitmask to allow bit 13.
Before:
$ perf stat -e cpu/event=0xb7,umask=0x1,config1=0x1bfff/u sleep 3
Performance counter stats for 'sleep 3':
<not supported> cpu/event=0xb7,umask=0x1,config1=0x1bfff/u
After:
$ perf stat -e cpu/event=0xb7,umask=0x1,config1=0x1bfff/u sleep 3
Performance counter stats for 'sleep 3':
9,293 cpu/event=0xb7,umask=0x1,config1=0x1bfff/u
Signed-off-by: Yunying Sun <yunying.sun@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: acme@kernel.org
Cc: alexander.shishkin@linux.intel.com
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: jolsa@redhat.com
Cc: namhyung@kernel.org
Link: https://lkml.kernel.org/r/20190724082932.12833-1-yunying.sun@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/omapdrm/omap_irq.c')
0 files changed, 0 insertions, 0 deletions