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| author | Vince Weaver <vincent.weaver@maine.edu> | 2014-05-16 23:12:12 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-06-05 12:29:55 +0200 |
| commit | 53b25335dd60981ad608da7890420898a34469a6 (patch) | |
| tree | 284d8fbb69e661ea4966d96b85b44b9ef94e7e25 /Documentation/rt-mutex-design.txt | |
| parent | perf: Fix use after free in perf_remove_from_context() (diff) | |
| download | linux-53b25335dd60981ad608da7890420898a34469a6.tar.xz linux-53b25335dd60981ad608da7890420898a34469a6.zip | |
perf: Disable sampled events if no PMU interrupt
Add common code to generate -ENOTSUPP at event creation time if an
architecture attempts to create a sampled event and
PERF_PMU_NO_INTERRUPT is set.
This adds a new pmu->capabilities flag. Initially we only support
PERF_PMU_NO_INTERRUPT (to indicate a PMU has no support for generating
hardware interrupts) but there are other capabilities that can be
added later.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Acked-by: Will Deacon <will.deacon@arm.com>
[peterz: rename to PERF_PMU_CAP_* and moved the pmu::capabilities word into a hole]
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1405161708060.11099@vincent-weaver-1.umelst.maine.edu
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/rt-mutex-design.txt')
0 files changed, 0 insertions, 0 deletions