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| author | Kan Liang <kan.liang@linux.intel.com> | 2018-08-08 00:12:08 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-10-02 10:14:33 +0200 |
| commit | 7c5314b88da6d5af98239786772a1c44cc5eb67d (patch) | |
| tree | 05d2b10abde07b393ea7be360fbb565efd9fadde /tools/perf | |
| parent | f2c4db1bd80720cd8cb2a5aa220d9bc9f374f04e (diff) | |
| download | lwn-7c5314b88da6d5af98239786772a1c44cc5eb67d.tar.gz lwn-7c5314b88da6d5af98239786772a1c44cc5eb67d.zip | |
perf/x86/intel: Add quirk for Goldmont Plus
A ucode patch is needed for Goldmont Plus while counter freezing feature
is enabled. Otherwise, there will be some issues, e.g. PMI flood with
some events.
Add a quirk to check microcode version. If the system starts with the
wrong ucode, leave the counter-freezing feature permanently disabled.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: acme@kernel.org
Link: http://lkml.kernel.org/r/1533712328-2834-3-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf')
0 files changed, 0 insertions, 0 deletions