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| author | Sebastian Andrzej Siewior <[email protected]> | 2023-09-08 18:22:49 +0200 |
|---|---|---|
| committer | Peter Zijlstra <[email protected]> | 2023-09-20 09:31:11 +0200 |
| commit | af9f006393b53409be0ca83ae234bef840cdef4a (patch) | |
| tree | 7509dc170b32f89e48ad6fc980bddfe4ac540484 /net/lapb/lapb_timer.c | |
| parent | 28bc55f654de49f6122c7475b01b5d5ef4bdf0d4 (diff) | |
locking/rtmutex: Avoid unconditional slowpath for DEBUG_RT_MUTEXES
With DEBUG_RT_MUTEXES enabled the fast-path rt_mutex_cmpxchg_acquire()
always fails and all lock operations take the slow path.
Provide a new helper inline rt_mutex_try_acquire() which maps to
rt_mutex_cmpxchg_acquire() in the non-debug case. For the debug case
it invokes rt_mutex_slowtrylock() which can acquire a non-contended
rtmutex under full debug coverage.
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions