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| author |   Peter Zijlstra <peterz@infradead.org> | 2015-01-23 12:24:14 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-02-04 08:07:10 +0100 |
| commit | f63a8daa5812afef4f06c962351687e1ff9ccb2b (patch) | |
| tree | dd488b9bda2685c213a09d3feeb9e4f8a6d9dcaa /kernel/irq | |
| parent | perf: Add a bit of paranoia (diff) | |
| download | linux-dev-f63a8daa5812afef4f06c962351687e1ff9ccb2b.tar.xz linux-dev-f63a8daa5812afef4f06c962351687e1ff9ccb2b.zip | |
perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150123125834.209535886@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/irq')
0 files changed, 0 insertions, 0 deletions