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| author | Paul E. McKenney <paulmck@kernel.org> | 2025-03-06 10:12:31 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2025-03-11 10:15:52 -0700 |
| commit | 2af8780d6c8addecda5a0f624c4f084a3a9578fe (patch) | |
| tree | 9f3e567dc3a295ced260d078979b505d748cecda /kernel/stop_machine.c | |
| parent | Linux 6.14-rc1 (diff) | |
| download | linux-2af8780d6c8addecda5a0f624c4f084a3a9578fe.tar.gz linux-2af8780d6c8addecda5a0f624c4f084a3a9578fe.zip | |
stop-machine: Add comment for rcu_momentary_eqs()
Add a comment to explain the purpose of the rcu_momentary_eqs() call
from multi_cpu_stop(), which is to suppress false-positive RCU CPU
stall warnings.
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/87wmeuanti.ffs@tglx/
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Diffstat (limited to 'kernel/stop_machine.c')
| -rw-r--r-- | kernel/stop_machine.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c index 8896d844d738..5d2d0562115b 100644 --- a/kernel/stop_machine.c +++ b/kernel/stop_machine.c @@ -250,6 +250,7 @@ static int multi_cpu_stop(void *data) * be detected and reported on their side. */ touch_nmi_watchdog(); + /* Also suppress RCU CPU stall warnings. */ rcu_momentary_eqs(); } } while (curstate != MULTI_STOP_EXIT); |