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| author | Robert Richter <robert.richter@amd.com> | 2012-09-12 12:59:44 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-10-05 13:57:47 +0200 |
| commit | 2e132b12f78d88672711ae1d87624951de1089ca (patch) | |
| tree | bfbfa9b51e5e01ef9ad599816de2bb8915a2b10f /Documentation/filesystems/ncpfs.txt | |
| parent | c942ee2e62dff1a7bc6f809965e93e46808d554c (diff) | |
| download | talos-op-linux-2e132b12f78d88672711ae1d87624951de1089ca.tar.gz talos-op-linux-2e132b12f78d88672711ae1d87624951de1089ca.zip | |
perf/AMD/IBS: Add sysfs support
Add sysfs format entries for AMD IBS PMUs:
# find /sys/bus/event_source/devices/ibs_*/format
/sys/bus/event_source/devices/ibs_fetch/format
/sys/bus/event_source/devices/ibs_fetch/format/rand_en
/sys/bus/event_source/devices/ibs_op/format
/sys/bus/event_source/devices/ibs_op/format/cnt_ctl
This allows to specify following IBS options:
$ perf record -e ibs_fetch/rand_en=1/GH ...
$ perf record -e ibs_op/cnt_ctl=1/GH ...
Option cnt_ctl is only enabled if the IBS_CAPS_OPCNT bit is set in IBS
cpuid feature flags (AMD family 10h RevC and above).
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1347447584-28405-1-git-send-email-robert.richter@amd.com
[ Added small readability improvements. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/filesystems/ncpfs.txt')
0 files changed, 0 insertions, 0 deletions
