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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2025-03-16 07:05:32 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-03-19 18:03:05 +0300 |
| commit | 101acd2e78b1b63708ca527ca98e57b1ff2a9534 (patch) | |
| tree | 0f19a9d3f2a0325e9344f15f16aab4722c44a0ef /tools/perf/scripts/python/futex-contention.py | |
| parent | ecbd8047526d3e9681043c287dea7bc67ef33eb4 (diff) | |
| download | linux-101acd2e78b1b63708ca527ca98e57b1ff2a9534.tar.xz | |
rqspinlock: Add macros for rqspinlock usage
Introduce helper macros that wrap around the rqspinlock slow path and
provide an interface analogous to the raw_spin_lock API. Note that
in case of error conditions, preemption and IRQ disabling is
automatically unrolled before returning the error back to the caller.
Ensure that in absence of CONFIG_QUEUED_SPINLOCKS support, we fallback
to the test-and-set implementation.
Add some comments describing the subtle memory ordering logic during
unlock, and why it's safe.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250316040541.108729-17-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/futex-contention.py')
0 files changed, 0 insertions, 0 deletions