diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-09-15 12:31:59 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-09-16 19:36:25 +0200 |
| commit | a889a23a98fee183c9b6b0b14b2fd70583429c5e (patch) | |
| tree | 0fb646b22408d9cec184dc49aa29f89cffef5826 /drivers/acpi | |
| parent | aa6b43d57f995f6eec0e9e744dcb200e09ecb8e0 (diff) | |
ACPI: processor: Use CPUIDLE_FLAG_TLB_FLUSHED
Make acpi_processor_idle() use the generic TLB flushing code.
This again removes RCU usage after rcu_idle_enter().
(XXX make every C3 invalidate TLBs, not just C3-BM)
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 01ea986b6197..9ec504067f98 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -564,8 +564,6 @@ static DEFINE_RAW_SPINLOCK(c3_lock); static void acpi_idle_enter_bm(struct acpi_processor *pr, struct acpi_processor_cx *cx) { - acpi_unlazy_tlb(smp_processor_id()); - /* * disable bus master * bm_check implies we need ARB_DIS @@ -665,6 +663,7 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr, max_cstate = 1; for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) { + state = &acpi_idle_driver.states[count]; cx = &pr->power.states[i]; if (!cx->valid) @@ -672,10 +671,11 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr, per_cpu(acpi_cstate[count], dev->cpu) = cx; - if (lapic_timer_needs_broadcast(pr, cx)) { - state = &acpi_idle_driver.states[count]; + if (lapic_timer_needs_broadcast(pr, cx)) state->flags |= CPUIDLE_FLAG_TIMER_STOP; - } + + if (cx->type == ACPI_STATE_C3) + state->flags |= CPUIDLE_FLAG_TLB_FLUSHED; count++; if (count == CPUIDLE_STATE_MAX) |