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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-04-15 12:45:41 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-05-27 12:58:39 -0700 |
| commit | 64eaf974218d576812919c8b1a8d87ded4e695d9 (patch) | |
| tree | 81d70a7b65f3da8f6a15669b5da0a81b26a9c59e /kernel/cpu.c | |
| parent | a738eec6c6082f48cbcf0157fd9f550e286ea04b (diff) | |
| download | op-kernel-dev-64eaf974218d576812919c8b1a8d87ded4e695d9.zip op-kernel-dev-64eaf974218d576812919c8b1a8d87ded4e695d9.tar.gz | |
cpu: Handle smpboot_unpark_threads() uniformly
Commit 00df35f99191 (cpu: Defer smpboot kthread unparking until CPU known
to scheduler) put the online path's call to smpboot_unpark_threads()
into a CPU-hotplug notifier. This commit places the offline-failure
paths call into the same notifier for the sake of uniformity.
Note that it is not currently possible to place the offline path's call to
smpboot_park_threads() into an existing notifier because the CPU_DYING
notifiers run in a restricted environment, and the CPU_UP_PREPARE
notifiers run too soon.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/cpu.c')
| -rw-r--r-- | kernel/cpu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index 94bbe46..260eb7d 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -398,7 +398,6 @@ static int __ref _cpu_down(unsigned int cpu, int tasks_frozen) err = __stop_machine(take_cpu_down, &tcd_param, cpumask_of(cpu)); if (err) { /* CPU didn't die: tell everyone. Can't complain. */ - smpboot_unpark_threads(cpu); cpu_notify_nofail(CPU_DOWN_FAILED | mod, hcpu); goto out_release; } @@ -463,6 +462,7 @@ static int smpboot_thread_call(struct notifier_block *nfb, switch (action & ~CPU_TASKS_FROZEN) { + case CPU_DOWN_FAILED: case CPU_ONLINE: smpboot_unpark_threads(cpu); break; |
