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author | Peter Zijlstra <peterz@infradead.org> | 2020-08-07 20:50:19 +0200 |
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committer | Peter Zijlstra <peterz@infradead.org> | 2020-08-26 12:41:53 +0200 |
commit | 1098582a0f6c4e8fd28da0a6305f9233d02c9c1d (patch) | |
tree | bda70ef4f575f5c5e3d8e957cd5d88125dbddf9e /drivers/idle | |
parent | 49d9c5936314e44d314c605c39cce0fd947f9c3a (diff) | |
download | linux-1098582a0f6c4e8fd28da0a6305f9233d02c9c1d.tar.bz2 |
sched,idle,rcu: Push rcu_idle deeper into the idle path
Lots of things take locks, due to a wee bug, rcu_lockdep didn't notice
that the locking tracepoints were using RCU.
Push rcu_idle_{enter,exit}() as deep as possible into the idle paths,
this also resolves a lot of _rcuidle()/RCU_NONIDLE() usage.
Specifically, sched_clock_idle_wakeup_event() will use ktime which
will use seqlocks which will tickle lockdep, and
stop_critical_timings() uses lock.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Marco Elver <elver@google.com>
Link: https://lkml.kernel.org/r/20200821085348.310943801@infradead.org
Diffstat (limited to 'drivers/idle')
0 files changed, 0 insertions, 0 deletions