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authorYunying Sun <[email protected]>2019-07-24 16:29:32 +0800
committerIngo Molnar <[email protected]>2019-07-25 15:41:30 +0200
commit3b238a64c3009fed36eaea1af629d9377759d87d (patch)
treeebcf116303edd209d9a1b2b53d3479eae470ce02 /scripts/gdb/linux/symbols.py
parent3d0c3953601d250175c7684ec0d9df612061dae5 (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]>
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