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| author | Nathan Lynch <nathanl@austin.ibm.com> | 2004-08-22 22:33:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-08-22 22:33:51 -0700 |
| commit | 292ae1292c4f1f7c46a5dd0e67ef9741855d716b (patch) | |
| tree | 0bf6c42bada201f45bc47d49c4793a8dffb92009 /arch | |
| parent | 37cfbd3191f15ecb84595c45fb095033fe54bd3a (diff) | |
| download | history-292ae1292c4f1f7c46a5dd0e67ef9741855d716b.tar.gz | |
[PATCH] ppc64: tweak schedule_timeout in __cpu_die
The current code does schedule_timeout(HZ) when waiting for a cpu to die,
which is a bit coarse and tends to limit the "throughput" of my stress
tests :)
Change the HZ timeout to HZ/5, increase the number of tries to 25 so the
overall wait time is similar. In practice, I've never seen the loop need
more than two iterations.
Signed-off-by: Nathan Lynch <nathanl@austin.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ppc64/kernel/smp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/ppc64/kernel/smp.c b/arch/ppc64/kernel/smp.c index 828cdf36aeec44..b72e964c3a1227 100644 --- a/arch/ppc64/kernel/smp.c +++ b/arch/ppc64/kernel/smp.c @@ -271,13 +271,13 @@ void __cpu_die(unsigned int cpu) int cpu_status; unsigned int pcpu = get_hard_smp_processor_id(cpu); - for (tries = 0; tries < 5; tries++) { + for (tries = 0; tries < 25; tries++) { cpu_status = query_cpu_stopped(pcpu); if (cpu_status == 0) break; set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(HZ); + schedule_timeout(HZ/5); } if (cpu_status != 0) { printk("Querying DEAD? cpu %i (%i) shows %i\n", |