diff options
| author | Frederic Weisbecker <[email protected]> | 2018-05-08 15:38:19 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2018-05-14 11:25:27 +0200 |
| commit | 0f6f47bacba514f4e9f61de0d85940dfb41498cc (patch) | |
| tree | b9af972c3f7fb802ec4c992d14d3c1ae2bdf0981 | |
| parent | 30d723340c30ff9afe200ef5ecbbdc77e6d1f816 (diff) | |
softirq/core: Turn default irq_cpustat_t to standard per-cpu
In order to optimize and consolidate softirq mask accesses, let's
convert the default irq_cpustat_t implementation to per-CPU standard API.
Signed-off-by: Frederic Weisbecker <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Acked-by: Peter Zijlstra <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Helge Deller <[email protected]>
Cc: James E.J. Bottomley <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | include/linux/irq_cpustat.h | 4 | ||||
| -rw-r--r-- | kernel/softirq.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/irq_cpustat.h b/include/linux/irq_cpustat.h index 4954948d1973..ddea03c7c39d 100644 --- a/include/linux/irq_cpustat.h +++ b/include/linux/irq_cpustat.h @@ -18,8 +18,8 @@ */ #ifndef __ARCH_IRQ_STAT -extern irq_cpustat_t irq_stat[]; /* defined in asm/hardirq.h */ -#define __IRQ_STAT(cpu, member) (irq_stat[cpu].member) +DECLARE_PER_CPU_ALIGNED(irq_cpustat_t, irq_stat); /* defined in asm/hardirq.h */ +#define __IRQ_STAT(cpu, member) (per_cpu(irq_stat.member, cpu)) #endif /* arch independent irq_stat fields */ diff --git a/kernel/softirq.c b/kernel/softirq.c index 177de3640c78..c5fafd792df1 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -49,8 +49,8 @@ */ #ifndef __ARCH_IRQ_STAT -irq_cpustat_t irq_stat[NR_CPUS] ____cacheline_aligned; -EXPORT_SYMBOL(irq_stat); +DEFINE_PER_CPU_ALIGNED(irq_cpustat_t, irq_stat); +EXPORT_PER_CPU_SYMBOL(irq_stat); #endif static struct softirq_action softirq_vec[NR_SOFTIRQS] __cacheline_aligned_in_smp; |