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author | Yunying Sun <[email protected]> | 2019-07-24 16:29:32 +0800 |
---|---|---|
committer | Ingo Molnar <[email protected]> | 2019-07-25 15:41:30 +0200 |
commit | 3b238a64c3009fed36eaea1af629d9377759d87d (patch) | |
tree | ebcf116303edd209d9a1b2b53d3479eae470ce02 /lib/mpi/mpi-pow.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 <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: Kan Liang <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-pow.c')
0 files changed, 0 insertions, 0 deletions