tag b9d43ab4e9f696a5ef6c28243ea8bc130dce0f91
tagger Ingo Molnar <mingo@kernel.org> Sat Apr 25 11:09:06 2020 +0200
object f3bed55e850926614b9898fe982f66d2541a36a5

Two changes:

 - fix exit event records
 - extend x86 PMU driver enumeration to add Intel Jasper Lake CPU support.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

commit f3bed55e850926614b9898fe982f66d2541a36a5
author Ian Rogers <irogers@google.com> Fri Apr 17 11:28:42 2020 -0700
committer Peter Zijlstra <peterz@infradead.org> Wed Apr 22 23:10:14 2020 +0200
tree 8b294cbdc7a76ba82f640582e85ff7921e85274b
parent 5b16ef2e43ffa1be596652d992235b1cbb244935

perf/core: fix parent pid/tid in task exit events

Current logic yields the child task as the parent.

Before:
$ perf record bash -c "perf list > /dev/null"
$ perf script -D |grep 'FORK\|EXIT'
4387036190981094 0x5a70 [0x30]: PERF_RECORD_FORK(10472:10472):(10470:10470)
4387036606207580 0xf050 [0x30]: PERF_RECORD_EXIT(10472:10472):(10472:10472)
4387036607103839 0x17150 [0x30]: PERF_RECORD_EXIT(10470:10470):(10470:10470)
                                                   ^
  Note the repeated values here -------------------/

After:
383281514043 0x9d8 [0x30]: PERF_RECORD_FORK(2268:2268):(2266:2266)
383442003996 0x2180 [0x30]: PERF_RECORD_EXIT(2268:2268):(2266:2266)
383451297778 0xb70 [0x30]: PERF_RECORD_EXIT(2266:2266):(2265:2265)

Fixes: 94d5d1b2d891 ("perf_counter: Report the cloning task as parent on perf_counter_fork()")
Reported-by: KP Singh <kpsingh@google.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200417182842.12522-1-irogers@google.com