Ian Rogers 5f8370cdc6 perf/core: fix parent pid/tid in task exit events ... commit f3bed55e850926614b9898fe982f66d2541a36a5 upstream. 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: 94d5d1b2d8 ("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 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-05-02 17:25:53 +02:00
..
callchain.c	treewide: convert ISO_8859-1 text comments to utf-8	2018-08-23 18:48:43 -07:00
core.c	perf/core: fix parent pid/tid in task exit events	2020-05-02 17:25:53 +02:00
hw_breakpoint.c	perf/hw_breakpoint: Fix arch_hw_breakpoint use-before-initialization	2019-10-17 13:45:44 -07:00
internal.h	perf: Make perf_callchain function static	2018-01-08 12:33:01 -03:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ring_buffer.c	perf/ring-buffer: Always use {READ,WRITE}_ONCE() for rb->user_page data	2019-06-22 08:15:16 +02:00
uprobes.c	signal: Properly deliver SIGILL from uprobes	2019-11-20 18:46:22 +01:00