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| author | Jakub Kicinski | 2019-03-30 01:08:53 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2019-04-29 08:29:21 +0200 |
| commit | b92e793bbe4a1c49dbf78d8d526561e7a7dd568a (patch) | |
| tree | 981f93f26cadc142d2b2280f1d9d8f60a9890e1c /include/linux/perf_regs.h | |
| parent | locking/static_key: Add support for deferred static branches (diff) | |
| download | kernel-qcow2-linux-b92e793bbe4a1c49dbf78d8d526561e7a7dd568a.tar.gz kernel-qcow2-linux-b92e793bbe4a1c49dbf78d8d526561e7a7dd568a.tar.xz kernel-qcow2-linux-b92e793bbe4a1c49dbf78d8d526561e7a7dd568a.zip | |
locking/static_key: Factor out the fast path of static_key_slow_dec()
static_key_slow_dec() checks if the atomic enable count is larger
than 1, and if so there decrements it before taking the jump_label_lock.
Move this logic into a helper for reuse in rate limitted keys.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: alexei.starovoitov@gmail.com
Cc: ard.biesheuvel@linaro.org
Cc: oss-drivers@netronome.com
Cc: yamada.masahiro@socionext.com
Link: https://lkml.kernel.org/r/20190330000854.30142-3-jakub.kicinski@netronome.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/perf_regs.h')
0 files changed, 0 insertions, 0 deletions