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| author | Joel Fernandes (Google) <joel@joelfernandes.org> | 2018-09-25 20:25:57 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2018-11-12 17:48:31 +0100 |
| commit | 5cc379a42acd7104747077db7aaf4b01115ee484 (patch) | |
| tree | 497b479e89541b8bd6e10689ea3db3b3f7c365f3 | |
| parent | doc: Remove rcu_preempt_state reference in stallwarn (diff) | |
| download | linux-5cc379a42acd7104747077db7aaf4b01115ee484.tar.xz linux-5cc379a42acd7104747077db7aaf4b01115ee484.zip | |
doc: Update information about resched_cpu
Since commit fced9c8cfe6b ("rcu: Avoid resched_cpu() when rescheduling
the current CPU"), resched_cpu is not directly called from
sync_sched_exp_handler. Update the documentation about the same.
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: <kernel-team@android.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
| -rw-r--r-- | Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html b/Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html index e62c7c34a369..8e4f873b979f 100644 --- a/Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html +++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html @@ -160,9 +160,9 @@ was in flight. If the CPU is idle, then <tt>sync_sched_exp_handler()</tt> reports the quiescent state. -<p> -Otherwise, the handler invokes <tt>resched_cpu()</tt>, which forces -a future context switch. +<p> Otherwise, the handler forces a future context switch by setting the +NEED_RESCHED flag of the current task's thread flag and the CPU preempt +counter. At the time of the context switch, the CPU reports the quiescent state. Should the CPU go offline first, it will report the quiescent state at that time. |