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| author | Richard Weinberger <richard@nod.at> | 2016-08-18 14:57:17 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-06 18:30:20 +0200 |
| commit | e6d4989a9ad1ccc343f29578a461612ed80fc6c5 (patch) | |
| tree | 97b092d2f0505c61d15cf4f2025fddb0c5f6c614 /kernel/cpu.c | |
| parent | 017c59c042d01fc84cae7a8ea475861e702c77ab (diff) | |
| download | linux-e6d4989a9ad1ccc343f29578a461612ed80fc6c5.tar.gz linux-e6d4989a9ad1ccc343f29578a461612ed80fc6c5.tar.bz2 linux-e6d4989a9ad1ccc343f29578a461612ed80fc6c5.zip | |
relayfs: Convert to hotplug state machine
Install the callbacks via the state machine. They are installed at run time but
relay_prepare_cpu() does not need to be invoked by the boot CPU because
relay_open() was not yet invoked and there are no pools that need to be created.
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20160818125731.27256-3-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/cpu.c')
| -rw-r--r-- | kernel/cpu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index d14ae4438e8e..0c0d4b2ddd1c 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -23,6 +23,7 @@ #include <linux/tick.h> #include <linux/irq.h> #include <linux/smpboot.h> +#include <linux/relay.h> #include <trace/events/power.h> #define CREATE_TRACE_POINTS @@ -1272,6 +1273,11 @@ static struct cpuhp_step cpuhp_bp_states[] = { .startup.single = smpcfd_prepare_cpu, .teardown.single = smpcfd_dead_cpu, }, + [CPUHP_RELAY_PREPARE] = { + .name = "relay:prepare", + .startup.single = relay_prepare_cpu, + .teardown.single = NULL, + }, [CPUHP_RCUTREE_PREP] = { .name = "RCU/tree:prepare", .startup.single = rcutree_prepare_cpu, |