diff options
| 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 /include/linux/relay.h | |
| parent | relay: Use per CPU constructs for the relay channel buffer pointers (diff) | |
| download | linux-dev-e6d4989a9ad1ccc343f29578a461612ed80fc6c5.tar.xz linux-dev-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 'include/linux/relay.h')
| -rw-r--r-- | include/linux/relay.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/relay.h b/include/linux/relay.h index eb295e373b90..ecbb34a382b8 100644 --- a/include/linux/relay.h +++ b/include/linux/relay.h @@ -288,5 +288,11 @@ static inline void subbuf_start_reserve(struct rchan_buf *buf, */ extern const struct file_operations relay_file_operations; +#ifdef CONFIG_RELAY +int relay_prepare_cpu(unsigned int cpu); +#else +#define relay_prepare_cpu NULL +#endif + #endif /* _LINUX_RELAY_H */ |