diff options
| author | Chris Fries <C.Fries@motorola.com> | 2013-05-08 16:43:17 -0500 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-09-18 19:40:30 +0200 |
| commit | ab7b4cf4308dd2895fe7fb6c112c29c81338fd57 (patch) | |
| tree | 46abeb2440f6a7d088df85f88624baab7cb4d2ab /arch/arm/kernel/smp.c | |
| parent | 68d8a702c4554bab85c2f481b2f7b882fef09a4f (diff) | |
ARM: smp: Wait just 1 second for other CPU to halt
Currently, the busyloop waiting for a 2nd CPU to stop takes about 4
seconds. Adjust for the overhead of the loop by looping every 1ms
instead of 1us.
Signed-off-by: Chris Fries <C.Fries@motorola.com>
Reviewed-on: http://gerrit.pcs.mot.com/537864
SLT-Approved: Slta Waiver <sltawvr@motorola.com>
Tested-by: Jira Key <jirakey@motorola.com>
Reviewed-by: Check Patch <CHEKPACH@motorola.com>
Reviewed-by: Klocwork kwcheck <klocwork-kwcheck@sourceforge.mot.com>
Reviewed-by: Igor Kovalenko <cik009@motorola.com>
Reviewed-by: Russell Knize <rknize2@motorola.com>
Submit-Approved: Jira Key <jirakey@motorola.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
Conflicts:
arch/arm/kernel/smp.c
Diffstat (limited to 'arch/arm/kernel/smp.c')
| -rw-r--r-- | arch/arm/kernel/smp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 5c5842d69..3a2b50b8b 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -778,9 +778,9 @@ void smp_send_stop(void) smp_cross_call(&mask, IPI_CPU_STOP); /* Wait up to one second for other CPUs to stop */ - timeout = USEC_PER_SEC; - while (num_online_cpus() > 1 && timeout--) - udelay(1); + timeout = MSEC_PER_SEC; + while (num_active_cpus() > 1 && timeout--) + mdelay(1); if (num_online_cpus() > 1) pr_warning("SMP: failed to stop secondary CPUs\n"); |