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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-03-25 18:04:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-09 18:54:24 +0200 |
| commit | f227c2f2d111a3e7cee3abf429fedb99ff00f89f (patch) | |
| tree | 8e359556e2651d4ed22485c66e4841c66f57629a /tools/perf/scripts/python/stackcollapse.py | |
| parent | 51a579023c9f9b8b382cffb9d4f4301446aea31a (diff) | |
cpufreq: intel_pstate: Read global.no_turbo under READ_ONCE()
[ Upstream commit 9558fae8ce97b3b320b387dd7c88309df2c36d4d ]
Because global.no_turbo is generally not read under intel_pstate_driver_lock
make store_no_turbo() use WRITE_ONCE() for updating it (this is the only
place at which it is updated except for the initialization) and make the
majority of places reading it use READ_ONCE().
Also remove redundant global.turbo_disabled checks from places that
depend on the 'true' value of global.no_turbo because it can only be
'true' if global.turbo_disabled is also 'true'.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Stable-dep-of: 350cbb5d2f67 ("cpufreq: intel_pstate: Check turbo_is_disabled() in store_no_turbo()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions