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cpuidle: Fix ct_idle_*() usage

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The whole disable-RCU, enable-IRQS dance is very intricate since
changing IRQ state is traced, which depends on RCU.

Add two helpers for the cpuidle case that mirror the entry code:

  ct_cpuidle_enter()
  ct_cpuidle_exit()

And fix all the cases where the enter/exit dance was buggy.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20230112195540.130014793@infradead.org
This commit is contained in:
Peter Zijlstra
2023-01-13 11:48:15 +01:00
committed by Ingo Molnar
parent 0c5ffc3d7b
commit a01353cf18
15 changed files with 86 additions and 66 deletions
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include/linux/clockchips.h
+2 -2
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@@ -211,7 +211,7 @@ extern int tick_receive_broadcast(void);
extern void tick_setup_hrtimer_broadcast(void);
extern int tick_check_broadcast_expired(void);
# else
static inline int tick_check_broadcast_expired(void) { return 0; }
static __always_inline int tick_check_broadcast_expired(void) { return 0; }
static inline void tick_setup_hrtimer_broadcast(void) { }
# endif
@@ -219,7 +219,7 @@ static inline void tick_setup_hrtimer_broadcast(void) { }
static inline void clockevents_suspend(void) { }
static inline void clockevents_resume(void) { }
static inline int tick_check_broadcast_expired(void) { return 0; }
static __always_inline int tick_check_broadcast_expired(void) { return 0; }
static inline void tick_setup_hrtimer_broadcast(void) { }
#endif /* !CONFIG_GENERIC_CLOCKEVENTS */