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| author | Paul E. McKenney <paulmck@kernel.org> | 2022-08-03 17:48:12 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-08-31 14:03:14 +0200 |
| commit | 089254fd386eb6800dd7d7863f12a04ada0c35fa (patch) | |
| tree | 7d21add72209e4df4a23f45d7dcdc827c2c7b92b /kernel/smp.c | |
| parent | rcu: Make tiny RCU support leak callbacks for debug-object errors (diff) | |
| download | linux-089254fd386eb6800dd7d7863f12a04ada0c35fa.tar.xz linux-089254fd386eb6800dd7d7863f12a04ada0c35fa.zip | |
rcu: Document reason for rcu_all_qs() call to preempt_disable()
Given that rcu_all_qs() is in non-preemptible kernels, why on earth should
it invoke preempt_disable()? This commit adds the reason, which is to
work nicely with debugging enabled in CONFIG_PREEMPT_COUNT=y kernels.
Reported-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Reported-by: Boqun Feng <boqun.feng@gmail.com>
Reported-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/smp.c')
0 files changed, 0 insertions, 0 deletions