diff options
| author | Marc Zyngier <maz@kernel.org> | 2020-05-19 15:58:13 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-09-13 18:04:38 +0200 |
| commit | 83cfac95c01817819c2a51f0931d798d851f8a08 (patch) | |
| tree | de7e3d7ac19402c2457b5f090c79752290bc51ff /kernel/irq | |
| parent | genirq: Add fasteoi IPI flow (diff) | |
| download | linux-83cfac95c01817819c2a51f0931d798d851f8a08.tar.xz linux-83cfac95c01817819c2a51f0931d798d851f8a08.zip | |
genirq: Allow interrupts to be excluded from /proc/interrupts
A number of architectures implement IPI statistics directly,
duplicating the core kstat_irqs accounting. As we move IPIs to
being actual IRQs, we would end-up with a confusing display
in /proc/interrupts (where the IPIs would appear twice).
In order to solve this, allow interrupts to be flagged as
"hidden", which excludes them from /proc/interrupts.
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/debugfs.c | 1 | ||||
| -rw-r--r-- | kernel/irq/proc.c | 2 | ||||
| -rw-r--r-- | kernel/irq/settings.h | 7 |
3 files changed, 9 insertions, 1 deletions
diff --git a/kernel/irq/debugfs.c b/kernel/irq/debugfs.c index b95ff5d5f4bd..acabc0c0e46b 100644 --- a/kernel/irq/debugfs.c +++ b/kernel/irq/debugfs.c @@ -136,6 +136,7 @@ static const struct irq_bit_descr irqdesc_states[] = { BIT_MASK_DESCR(_IRQ_PER_CPU_DEVID), BIT_MASK_DESCR(_IRQ_IS_POLLED), BIT_MASK_DESCR(_IRQ_DISABLE_UNLAZY), + BIT_MASK_DESCR(_IRQ_HIDDEN), }; static const struct irq_bit_descr irqdesc_istates[] = { diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 32c071d7bc03..72513ed2a5fc 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -485,7 +485,7 @@ int show_interrupts(struct seq_file *p, void *v) rcu_read_lock(); desc = irq_to_desc(i); - if (!desc) + if (!desc || irq_settings_is_hidden(desc)) goto outsparse; if (desc->kstat_irqs) diff --git a/kernel/irq/settings.h b/kernel/irq/settings.h index e43795cd2ccf..403378b9947b 100644 --- a/kernel/irq/settings.h +++ b/kernel/irq/settings.h @@ -17,6 +17,7 @@ enum { _IRQ_PER_CPU_DEVID = IRQ_PER_CPU_DEVID, _IRQ_IS_POLLED = IRQ_IS_POLLED, _IRQ_DISABLE_UNLAZY = IRQ_DISABLE_UNLAZY, + _IRQ_HIDDEN = IRQ_HIDDEN, _IRQF_MODIFY_MASK = IRQF_MODIFY_MASK, }; @@ -31,6 +32,7 @@ enum { #define IRQ_PER_CPU_DEVID GOT_YOU_MORON #define IRQ_IS_POLLED GOT_YOU_MORON #define IRQ_DISABLE_UNLAZY GOT_YOU_MORON +#define IRQ_HIDDEN GOT_YOU_MORON #undef IRQF_MODIFY_MASK #define IRQF_MODIFY_MASK GOT_YOU_MORON @@ -167,3 +169,8 @@ static inline void irq_settings_clr_disable_unlazy(struct irq_desc *desc) { desc->status_use_accessors &= ~_IRQ_DISABLE_UNLAZY; } + +static inline bool irq_settings_is_hidden(struct irq_desc *desc) +{ + return desc->status_use_accessors & _IRQ_HIDDEN; +} |