diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-12-10 20:25:44 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-12-15 16:19:31 +0100 |
| commit | 501e2db67fa4264b517de5c7934e94cca89b3a1e (patch) | |
| tree | dc656c09981d9fcaef2bd9cc6889d9e9e124c505 | |
| parent | genirq: Make kstat_irqs() static (diff) | |
| download | linux-501e2db67fa4264b517de5c7934e94cca89b3a1e.tar.xz linux-501e2db67fa4264b517de5c7934e94cca89b3a1e.zip | |
genirq: Provide kstat_irqdesc_cpu()
Most users of kstat_irqs_cpu() have the irq descriptor already. No point in
calling into the core code and looking it up once more.
Use it in per_cpu_count_show() to start with.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201210194043.362094758@linutronix.de
| -rw-r--r-- | include/linux/irqdesc.h | 6 | ||||
| -rw-r--r-- | kernel/irq/irqdesc.c | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 4a1d016716f4..891b323266df 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -113,6 +113,12 @@ static inline void irq_unlock_sparse(void) { } extern struct irq_desc irq_desc[NR_IRQS]; #endif +static inline unsigned int irq_desc_kstat_cpu(struct irq_desc *desc, + unsigned int cpu) +{ + return desc->kstat_irqs ? *per_cpu_ptr(desc->kstat_irqs, cpu) : 0; +} + static inline struct irq_desc *irq_data_to_desc(struct irq_data *data) { return container_of(data->common, struct irq_desc, irq_common_data); diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 2eb076f4a566..f509c4db2029 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -147,12 +147,12 @@ static ssize_t per_cpu_count_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj); - int cpu, irq = desc->irq_data.irq; ssize_t ret = 0; char *p = ""; + int cpu; for_each_possible_cpu(cpu) { - unsigned int c = kstat_irqs_cpu(irq, cpu); + unsigned int c = irq_desc_kstat_cpu(desc, cpu); ret += scnprintf(buf + ret, PAGE_SIZE - ret, "%s%u", p, c); p = ","; |