https://github.com/torvalds/linux
Revision 3b238a64c3009fed36eaea1af629d9377759d87d authored by Yunying Sun on 24 July 2019, 08:29:32 UTC, committed by Ingo Molnar on 25 July 2019, 13:41:30 UTC
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>
1 parent 3d0c395
Tip revision: 3b238a64c3009fed36eaea1af629d9377759d87d authored by Yunying Sun on 24 July 2019, 08:29:32 UTC
perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register
perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register
Tip revision: 3b238a6
| File | Mode | Size |
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| arch | ||
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| certs | ||
| crypto | ||
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| fs | ||
| include | ||
| init | ||
| ipc | ||
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| net | ||
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| usr | ||
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| .clang-format | -rw-r--r-- | 14.6 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 71 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.6 KB |
| .mailmap | -rw-r--r-- | 12.0 KB |
| COPYING | -rw-r--r-- | 423 bytes |
| CREDITS | -rw-r--r-- | 97.1 KB |
| Kbuild | -rw-r--r-- | 1.5 KB |
| Kconfig | -rw-r--r-- | 595 bytes |
| MAINTAINERS | -rw-r--r-- | 509.8 KB |
| Makefile | -rw-r--r-- | 59.1 KB |
| README | -rw-r--r-- | 727 bytes |
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