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Eric Dumazet 6c9ae009b2 irq: use per_cpu kstat_irqs ... Use modern per_cpu API to increment {soft|hard}irq counters, and use per_cpu allocation for (struct irq_desc)->kstats_irq instead of an array. This gives better SMP/NUMA locality and saves few instructions per irq. With small nr_cpuids values (8 for example), kstats_irq was a small array (less than L1_CACHE_BYTES), potentially source of false sharing. In the !CONFIG_SPARSE_IRQ case, remove the huge, NUMA/cache unfriendly kstat_irqs_all[NR_IRQS][NR_CPUS] array. Note: we still populate kstats_irq for all possible irqs in early_irq_init(). We probably could use on-demand allocations. (Code included in alloc_descs()). Problem is not all IRQS are used with a prior alloc_descs() call. kstat_irqs_this_cpu() is not used anymore, remove it. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Reviewed-by: Christoph Lameter <cl@linux.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <andi@firstfloor.org> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		14 years ago
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Kconfig	genirq: Remove the now unused sparse irq leftovers	15 years ago
Makefile	genirq: Remove the now unused sparse irq leftovers	15 years ago
autoprobe.c	…
chip.c	genirq: Sanitize dynamic irq handling	15 years ago
devres.c	…
dummychip.c	genirq: Fix CONFIG_GENIRQ_NO_DEPRECATED=y build	15 years ago
handle.c	genirq: Distangle kernel/irq/handle.c	15 years ago
internals.h	genirq: Remove the now unused sparse irq leftovers	15 years ago
irqdesc.c	irq: use per_cpu kstat_irqs	14 years ago
manage.c	sched: Constify function scope static struct sched_param usage	14 years ago
migration.c	…
pm.c	…
proc.c	genirq: Fix incorrect proc spurious output	14 years ago
resend.c	…
spurious.c	…