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| author | Stephane Eranian <eranian@google.com> | 2011-03-23 16:03:06 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-03-23 16:07:22 +0100 |
| commit | 68cacd29167b1926d237bd1b153aa2a990201729 (patch) | |
| tree | d4359e9e0a1fa88b569e0c8a20aede435d916fee /include/linux/perf_event.h | |
| parent | ce2d17ca7f85dcade62cd608601a0d52ccdaf0e6 (diff) | |
| download | op-kernel-dev-68cacd29167b1926d237bd1b153aa2a990201729.zip op-kernel-dev-68cacd29167b1926d237bd1b153aa2a990201729.tar.gz | |
perf_events: Fix stale ->cgrp pointer in update_cgrp_time_from_cpuctx()
This patch solves a stale pointer problem in
update_cgrp_time_from_cpuctx(). The cpuctx->cgrp
was not cleared on all possible event exit paths,
including:
close()
perf_release()
perf_release_kernel()
list_del_event()
This patch fixes list_del_event() to clear cpuctx->cgrp
when there are no cgroup events left in the context.
[ This second version makes the code compile when
CONFIG_CGROUP_PERF is not enabled. We unconditionally define
perf_cpu_context->cgrp. ]
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: peterz@infradead.org
Cc: perfmon2-devel@lists.sf.net
Cc: paulus@samba.org
Cc: davem@davemloft.net
LKML-Reference: <20110323150306.GA1580@quad>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/perf_event.h')
| -rw-r--r-- | include/linux/perf_event.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index f495c01..311b4dc 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -938,9 +938,7 @@ struct perf_cpu_context { struct list_head rotation_list; int jiffies_interval; struct pmu *active_pmu; -#ifdef CONFIG_CGROUP_PERF struct perf_cgroup *cgrp; -#endif }; struct perf_output_handle { |
