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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2019-04-25 12:04:12 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-04-26 00:18:03 +0300 |
| commit | b24e196586fecafed1c3cff9b2f87c1a64138ade (patch) | |
| tree | 5ee94efe0a97db0504273ccc503f66482b5120b7 /block/blk-mq-debugfs-zoned.c | |
| parent | a174920d69db9be80332f535db4a8ca2e3bccf24 (diff) | |
| download | linux-b24e196586fecafed1c3cff9b2f87c1a64138ade.tar.xz | |
PM / Domains: Search for the CPU device outside the genpd lock
While attaching/detaching a device to a PM domain (genpd) with
GENPD_FLAG_CPU_DOMAIN set, genpd iterates the cpu_possible_mask to
check whether or not the device corresponds to a CPU. This iteration
is done while holding the genpd's lock, which is unnecessary.
Avoid the locking by restructuring the corresponding code a bit.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'block/blk-mq-debugfs-zoned.c')
0 files changed, 0 insertions, 0 deletions