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| author | Kan Liang <kan.liang@linux.intel.com> | 2026-03-27 13:28:44 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-04-03 14:23:43 +0200 |
| commit | 9805ed3c91478b08a586861b874bd8b6a2fed648 (patch) | |
| tree | 1ac8b34b5267b59d215b93966d783ecccb13e052 /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | 6ee26b7a224b27aa7e8e1ee8a845a31664d2e97c (diff) | |
perf/x86/msr: Make SMI and PPERF on by default
The MSRs, SMI_COUNT and PPERF, are model-specific MSRs. A very long
CPU ID list is maintained to indicate the supported platforms. With more
and more platforms being introduced, new CPU IDs have to be kept adding.
Also, the old kernel has to be updated to apply the new CPU ID.
The MSRs have been introduced for a long time. There is no plan to
change them in the near future. Furthermore, the current code utilizes
rdmsr_safe() to check the availability of MSRs before using it.
Make them on by default. It should be good enough to only rely on the
rdmsr_safe() to check their availability for both existing and future
platforms.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Co-developed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260327052844.818218-1-dapeng1.mi@linux.intel.com
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions