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| author |   Peter Zijlstra <peterz@infradead.org> | 2020-09-15 12:32:00 +0200 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-09-16 19:36:26 +0200 |
| commit | 8747f2022fe8d8029193707ee86ff5c792cbef9b (patch) | |
| tree | fdb28a11eb16c420a68394a907eb7c5f9e5c10d4 /include | |
| parent | ACPI: processor: Use CPUIDLE_FLAG_TLB_FLUSHED (diff) | |
| download | wireguard-linux-8747f2022fe8d8029193707ee86ff5c792cbef9b.tar.xz wireguard-linux-8747f2022fe8d8029193707ee86ff5c792cbef9b.zip | |
cpuidle: Allow cpuidle drivers to take over RCU-idle
Some drivers have to do significant work, some of which relies on RCU
still being active. Instead of using RCU_NONIDLE in the drivers and
flipping RCU back on, allow drivers to take over RCU-idle duty.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpuidle.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 75895e6363b8..6175c77bf25e 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -82,6 +82,7 @@ struct cpuidle_state { #define CPUIDLE_FLAG_UNUSABLE BIT(3) /* avoid using this state */ #define CPUIDLE_FLAG_OFF BIT(4) /* disable this state by default */ #define CPUIDLE_FLAG_TLB_FLUSHED BIT(5) /* idle-state flushes TLBs */ +#define CPUIDLE_FLAG_RCU_IDLE BIT(6) /* idle-state takes care of RCU */ struct cpuidle_device_kobj; struct cpuidle_state_kobj; |