perf/x86/intel: Introduce the fourth fixed counter

Browse source

The fourth fixed counter, TOPDOWN.SLOTS, is introduced in Ice Lake to
measure the level 1 TopDown events.

Add MSR address and macros for the new fixed counter, which will be used
in a later patch.

Add comments to explain the event encoding rules for the fixed counters.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200723171117.9918-4-kan.liang@linux.intel.com

...

This commit is contained in:

Kan Liang 2020-07-23 10:11:06 -07:00 • committed by Peter Zijlstra

parent 60a2a271cf

commit 6f7225099d

1 changed files with 20 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

23

arch/x86/include/asm/perf_event.h

View file