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| author | Ingo Molnar <mingo@kernel.org> | 2019-08-22 20:52:04 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-08-22 20:52:04 +0200 |
| commit | 6c06b66e957c423c341ca255118f809733011864 (patch) | |
| tree | 2eb65f2f830d81ab032c7478503ff7c3ef0c9b96 /arch/arm/kernel | |
| parent | bb7ba8069de933d69cb45dd0a5806b61033796a3 (diff) | |
| parent | 07f038a408fb215fd656de78304b6ff4c7e4e490 (diff) | |
| download | linux-6c06b66e957c423c341ca255118f809733011864.tar.bz2 | |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU and LKMM changes from Paul E. McKenney:
- A few more RCU flavor consolidation cleanups.
- Miscellaneous fixes.
- Updates to RCU's list-traversal macros improving lockdep usability.
- Torture-test updates.
- Forward-progress improvements for no-CBs CPUs: Avoid ignoring
incoming callbacks during grace-period waits.
- Forward-progress improvements for no-CBs CPUs: Use ->cblist
structure to take advantage of others' grace periods.
- Also added a small commit that avoids needlessly inflicting
scheduler-clock ticks on callback-offloaded CPUs.
- Forward-progress improvements for no-CBs CPUs: Reduce contention
on ->nocb_lock guarding ->cblist.
- Forward-progress improvements for no-CBs CPUs: Add ->nocb_bypass
list to further reduce contention on ->nocb_lock guarding ->cblist.
- LKMM updates.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/smp.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index aab8ba40ce38..4b0bab2607e4 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -264,15 +264,13 @@ int __cpu_disable(void) return 0; } -static DECLARE_COMPLETION(cpu_died); - /* * called on the thread which is asking for a CPU to be shutdown - * waits until shutdown has completed, or it is timed out. */ void __cpu_die(unsigned int cpu) { - if (!wait_for_completion_timeout(&cpu_died, msecs_to_jiffies(5000))) { + if (!cpu_wait_death(cpu, 5)) { pr_err("CPU%u: cpu didn't die\n", cpu); return; } @@ -319,7 +317,7 @@ void arch_cpu_idle_dead(void) * this returns, power and/or clocks can be removed at any point * from this CPU and its cache by platform_cpu_kill(). */ - complete(&cpu_died); + (void)cpu_report_death(); /* * Ensure that the cache lines associated with that completion are |