diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2016-08-12 19:49:39 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-02 20:05:05 +0200 |
| commit | cf392d10b69e6e6c57ceea48b347a2ab1a4b75b2 (patch) | |
| tree | 45d917264300caaab4eede4ab32b10f75bd8e4c2 /include/trace | |
| parent | cpu/hotplug: Rework callback invocation logic (diff) | |
| download | linux-dev-cf392d10b69e6e6c57ceea48b347a2ab1a4b75b2.tar.xz linux-dev-cf392d10b69e6e6c57ceea48b347a2ab1a4b75b2.zip | |
cpu/hotplug: Add multi instance support
This patch adds the ability for a given state to have multiple
instances. Until now all states have a single instance and the startup /
teardown callback use global variables.
A few drivers need to perform a the same callbacks on multiple
"instances". Currently we have three drivers in tree which all have a
global list which they iterate over. With multi instance they support
don't need their private list and the functionality has been moved into
core code. Plus we hold the hotplug lock in core so no cpus comes/goes
while instances are registered and we do rollback in error case :)
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/1471024183-12666-3-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/cpuhp.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/trace/events/cpuhp.h b/include/trace/events/cpuhp.h index a72bd93ec7e5..996953db91d7 100644 --- a/include/trace/events/cpuhp.h +++ b/include/trace/events/cpuhp.h @@ -33,6 +33,34 @@ TRACE_EVENT(cpuhp_enter, __entry->cpu, __entry->target, __entry->idx, __entry->fun) ); +TRACE_EVENT(cpuhp_multi_enter, + + TP_PROTO(unsigned int cpu, + int target, + int idx, + int (*fun)(unsigned int, struct hlist_node *), + struct hlist_node *node), + + TP_ARGS(cpu, target, idx, fun, node), + + TP_STRUCT__entry( + __field( unsigned int, cpu ) + __field( int, target ) + __field( int, idx ) + __field( void *, fun ) + ), + + TP_fast_assign( + __entry->cpu = cpu; + __entry->target = target; + __entry->idx = idx; + __entry->fun = fun; + ), + + TP_printk("cpu: %04u target: %3d step: %3d (%pf)", + __entry->cpu, __entry->target, __entry->idx, __entry->fun) +); + TRACE_EVENT(cpuhp_exit, TP_PROTO(unsigned int cpu, |