diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2021-04-02 08:23:25 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-05-17 20:01:35 +0200 |
| commit | c2b1063e8feb2115537addce10f36c0c82d11d9b (patch) | |
| tree | 13b7ad872a31852d967f1869e4feeb0e2cbbf227 /kernel/irq/chip.c | |
| parent | d07f6ca923ea0927a1024dfccafc5b53b61cfecc (diff) | |
| download | linux-c2b1063e8feb2115537addce10f36c0c82d11d9b.tar.gz | |
genirq: Add a IRQF_NO_DEBUG flag
The whole call to note_interrupt() can be avoided or return early when interrupts would be marked accordingly. For IPI handlers which always return HANDLED the whole procedure is pretty pointless to begin with. Add a IRQF_NO_DEBUG flag and mark the interrupt accordingly if supplied when the interrupt is requested. When noirqdebug is set on the kernel commandline, then the interrupt is marked unconditionally so that there is only one condition in the hotpath to evaluate. [ clg: Add changelog ] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/7a8ad02f-63a8-c1aa-fdd1-39d973593d02@kaod.org
Diffstat (limited to 'kernel/irq/chip.c')
| -rw-r--r-- | kernel/irq/chip.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 8cc8e5713287..7f04c7d8296e 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -481,7 +481,7 @@ void handle_nested_irq(unsigned int irq) for_each_action_of_desc(desc, action) action_ret |= action->thread_fn(action->irq, action->dev_id); - if (!noirqdebug) + if (!irq_settings_no_debug(desc)) note_interrupt(desc, action_ret); raw_spin_lock_irq(&desc->lock); |