Tejun Heo be96b316de perf/cgroup: Fix perf cgroup hierarchy support ...

The following commit:

  864c2357ca ("perf/core: Do not set cpuctx->cgrp for unscheduled cgroups")

made list_update_cgroup_event() skip setting cpuctx->cgrp if no cgroup event
targets %current's cgroup.

This breaks perf_event's hierarchical support because events which target one
of the ancestors get ignored.

Fix it by using cgroup_is_descendant() test instead of equality.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: David Carrillo-Cisneros <davidcc@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-team@fb.com
Cc: stable@vger.kernel.org # v4.9+
Fixes: 864c2357ca ("perf/core: Do not set cpuctx->cgrp for unscheduled cgroups")
Link: http://lkml.kernel.org/r/20171028164237.GA972780@devbig577.frc2.facebook.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2017-10-30 11:58:51 +01:00

..

callchain.c

perf/callchain: Force USER_DS when invoking perf_callchain_user()

2017-05-10 07:54:00 +02:00

core.c

perf/cgroup: Fix perf cgroup hierarchy support

2017-10-30 11:58:51 +01:00

hw_breakpoint.c

perf: Collapse and fix event_function_call() users

2016-01-21 18:54:24 +01:00

internal.h

tracing, perf: Adjust code layout in get_recursion_context()

2017-08-25 11:04:18 +02:00

Makefile

ftrace: allow architectures to specify ftrace compile options

2015-01-29 09:19:19 +01:00

ring_buffer.c

perf/aux: Only update ->aux_wakeup in non-overwrite mode

2017-09-29 10:06:45 +02:00

uprobes.c

mm, uprobes: fix multiple free of ->uprobes_state.xol_area

2017-08-31 16:33:15 -07:00