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| author |   Richard Cochran <rcochran@linutronix.de> | 2016-03-11 09:43:07 +0100 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-03-18 01:49:01 +0100 |
| commit | c75361c0b08a59d3c9863a5a673ae039d5118c35 (patch) | |
| tree | d406a57cfcbdf87374400d333f28dc47b064db05 /tools/perf/scripts/python/stackcollapse.py | |
| parent | intel_pstate: Do not skip samples partially (diff) | |
| download | linux-dev-c75361c0b08a59d3c9863a5a673ae039d5118c35.tar.xz linux-dev-c75361c0b08a59d3c9863a5a673ae039d5118c35.zip | |
cpufreq: Make cpufreq_quick_get() safe to call
The function, cpufreq_quick_get, accesses the global 'cpufreq_driver' and
its fields without taking the associated lock, cpufreq_driver_lock.
Without the locking, nothing guarantees that 'cpufreq_driver' remains
consistent during the call. This patch fixes the issue by taking the lock
before accessing the data structure.
Signed-off-by: Richard Cochran <rcochran@linutronix.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions