diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2023-01-12 22:43:57 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-01-13 13:48:17 +0300 |
| commit | 365bd03ff63fb7433a49c453472cf54830b677bf (patch) | |
| tree | f07e3d32f87ec8dff2ccc200f77f80637e565435 /drivers/idle | |
| parent | f18b0d7ee815abb33eb1cc540fdde64fbb922d1a (diff) | |
| download | linux-365bd03ff63fb7433a49c453472cf54830b677bf.tar.xz | |
intel_idle: Add force_irq_on module param
For testing purposes.
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/20230112195541.967699392@infradead.org
Diffstat (limited to 'drivers/idle')
| -rw-r--r-- | drivers/idle/intel_idle.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index 7b996a09fa69..e2d64a8f9422 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -1837,6 +1837,9 @@ static bool __init intel_idle_verify_cstate(unsigned int mwait_hint) return true; } +static bool force_irq_on __read_mostly; +module_param(force_irq_on, bool, 0444); + static void __init intel_idle_init_cstates_icpu(struct cpuidle_driver *drv) { int cstate; @@ -1889,8 +1892,10 @@ static void __init intel_idle_init_cstates_icpu(struct cpuidle_driver *drv) /* Structure copy. */ drv->states[drv->state_count] = cpuidle_state_table[cstate]; - if (cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_IRQ_ENABLE) + if ((cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_IRQ_ENABLE) || force_irq_on) { + printk("intel_idle: forced intel_idle_irq for state %d\n", cstate); drv->states[drv->state_count].enter = intel_idle_irq; + } if (cpu_feature_enabled(X86_FEATURE_KERNEL_IBRS) && cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_IBRS) { |