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| 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/handle.c | |
| parent | Linux 5.13-rc2 (diff) | |
| download | linux-dev-c2b1063e8feb2115537addce10f36c0c82d11d9b.tar.xz linux-dev-c2b1063e8feb2115537addce10f36c0c82d11d9b.zip | |
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/handle.c')
| -rw-r--r-- | kernel/irq/handle.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 762a928e18f9..221d80c31e94 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -197,7 +197,7 @@ irqreturn_t handle_irq_event_percpu(struct irq_desc *desc) add_interrupt_randomness(desc->irq_data.irq, flags); - if (!noirqdebug) + if (!irq_settings_no_debug(desc)) note_interrupt(desc, retval); return retval; } |