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Commit dc565b52 authored by hawkes@sgi.com's avatar hawkes@sgi.com Committed by Tony Luck
Browse files

[IA64] wider use of for_each_cpu_mask() in arch/ia64 



In arch/ia64 change the explicit use of for-loops and NR_CPUS into the
general for_each_cpu() or for_each_online_cpu() constructs, as
appropriate.  This widens the scope of potential future optimizations
of the general constructs, as well as takes advantage of the existing
optimizations of first_cpu() and next_cpu().

Signed-off-by: default avatarJohn Hawkes <hawkes@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 444d1d9b

arch/ia64/kernel/irq.c

+6 −6
Original line number Diff line number Diff line
@@ -57,9 +57,9 @@ int show_interrupts(struct seq_file *p, void *v) 


	if (i == 0) {

		seq_printf(p, "           ");

		for (j=0; j<NR_CPUS; j++)

			if (cpu_online(j))

		for_each_online_cpu(j) {

			seq_printf(p, "CPU%d       ",j);

		}

		seq_putc(p, '\n');

	}
@@ -72,9 +72,9 @@ int show_interrupts(struct seq_file *p, void *v) 
#ifndef CONFIG_SMP

		seq_printf(p, "%10u ", kstat_irqs(i));

#else

		for (j = 0; j < NR_CPUS; j++)

			if (cpu_online(j))

		for_each_online_cpu(j) {

			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);

		}

#endif

		seq_printf(p, " %14s", irq_desc[i].handler->typename);

		seq_printf(p, "  %s", action->name);

arch/ia64/kernel/module.c

+3 −3
Original line number Diff line number Diff line
@@ -947,8 +947,8 @@ void 
percpu_modcopy (void *pcpudst, const void *src, unsigned long size)

{

	unsigned int i;

	for (i = 0; i < NR_CPUS; i++)

		if (cpu_possible(i))

	for_each_cpu(i) {

		memcpy(pcpudst + __per_cpu_offset[i], src, size);

	}

}

#endif /* CONFIG_SMP */

arch/ia64/kernel/smp.c

+5 −5
Original line number Diff line number Diff line
@@ -185,8 +185,8 @@ send_IPI_allbutself (int op) 
{

	unsigned int i;



	for (i = 0; i < NR_CPUS; i++) {

		if (cpu_online(i) && i != smp_processor_id())

	for_each_online_cpu(i) {

		if (i != smp_processor_id())

			send_IPI_single(i, op);

	}

}
@@ -199,10 +199,10 @@ send_IPI_all (int op) 
{

	int i;



	for (i = 0; i < NR_CPUS; i++)

		if (cpu_online(i))

	for_each_online_cpu(i) {

		send_IPI_single(i, op);

	}

}



/*

 * Called with preeemption disabled.

arch/ia64/kernel/smpboot.c

+3 −3
Original line number Diff line number Diff line
@@ -694,9 +694,9 @@ smp_cpus_done (unsigned int dummy) 
	 * Allow the user to impress friends.

	 */



	for (cpu = 0; cpu < NR_CPUS; cpu++)

		if (cpu_online(cpu))

	for_each_online_cpu(cpu) {

		bogosum += cpu_data(cpu)->loops_per_jiffy;

	}



	printk(KERN_INFO "Total of %d processors activated (%lu.%02lu BogoMIPS).\n",

	       (int)num_online_cpus(), bogosum/(500000/HZ), (bogosum/(5000/HZ))%100);

arch/ia64/mm/tlb.c

+3 −2
Original line number Diff line number Diff line
@@ -77,9 +77,10 @@ wrap_mmu_context (struct mm_struct *mm) 
	/* can't call flush_tlb_all() here because of race condition with O(1) scheduler [EF] */

	{

		int cpu = get_cpu(); /* prevent preemption/migration */

		for (i = 0; i < NR_CPUS; ++i)

			if (cpu_online(i) && (i != cpu))

		for_each_online_cpu(i) {

			if (i != cpu)

				per_cpu(ia64_need_tlb_flush, i) = 1;

		}

		put_cpu();

	}

	local_flush_tlb_all();