diff options
| author | Andrew Morton <akpm@osdl.org> | 2006-03-23 03:01:05 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-23 07:38:17 -0800 |
| commit | 394e3902c55e667945f6f1c2bdbc59842cce70f7 (patch) | |
| tree | f4bca0bdc0c291fda6f6949265aacec0669b9084 /arch/sparc/kernel/sun4m_smp.c | |
| parent | 63872f87a151413100678f110d1556026002809e (diff) | |
| download | linux-394e3902c55e667945f6f1c2bdbc59842cce70f7.tar.bz2 | |
[PATCH] more for_each_cpu() conversions
When we stop allocating percpu memory for not-possible CPUs we must not touch
the percpu data for not-possible CPUs at all. The correct way of doing this
is to test cpu_possible() or to use for_each_cpu().
This patch is a kernel-wide sweep of all instances of NR_CPUS. I found very
few instances of this bug, if any. But the patch converts lots of open-coded
test to use the preferred helper macros.
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Kyle McMartin <kyle@parisc-linux.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Christian Zankel <chris@zankel.net>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Cc: Nathan Scott <nathans@sgi.com>
Cc: Jens Axboe <axboe@suse.de>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/sparc/kernel/sun4m_smp.c')
| -rw-r--r-- | arch/sparc/kernel/sun4m_smp.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c index fbbd8a474c4c..1dde312eebda 100644 --- a/arch/sparc/kernel/sun4m_smp.c +++ b/arch/sparc/kernel/sun4m_smp.c @@ -218,10 +218,8 @@ void __init smp4m_boot_cpus(void) cpu_present_map = cpumask_of_cpu(smp_processor_id()); } else { unsigned long bogosum = 0; - for(i = 0; i < NR_CPUS; i++) { - if (cpu_isset(i, cpu_present_map)) - bogosum += cpu_data(i).udelay_val; - } + for_each_present_cpu(i) + bogosum += cpu_data(i).udelay_val; printk("Total of %d Processors activated (%lu.%02lu BogoMIPS).\n", cpucount + 1, bogosum/(500000/HZ), |