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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2025-05-12 11:27:23 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-05-15 15:23:30 +0200 |
| commit | c99dac52ffad5df88c9c52ab2008b182743bdcc1 (patch) | |
| tree | 390890ca773061c527e43ac1aaa80c7fc8010d71 /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | net: page_pool: Don't recycle into cache on PREEMPT_RT (diff) | |
| download | linux-c99dac52ffad5df88c9c52ab2008b182743bdcc1.tar.gz linux-c99dac52ffad5df88c9c52ab2008b182743bdcc1.zip | |
net: dst_cache: Use nested-BH locking for dst_cache::cache
dst_cache::cache is a per-CPU variable and relies on disabled BH for its
locking. Without per-CPU locking in local_bh_disable() on PREEMPT_RT
this data structure requires explicit locking.
Add a local_lock_t to the data structure and use
local_lock_nested_bh() for locking. This change adds only lockdep
coverage and does not alter the functional behaviour for !PREEMPT_RT.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://patch.msgid.link/20250512092736.229935-3-bigeasy@linutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions