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| author | Tony Lindgren <tony@atomide.com> | 2010-09-21 01:43:19 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-10-04 21:23:36 +0200 |
| commit | f9e417e901e891d139f4d5fd750959e4a862d9f7 (patch) | |
| tree | 39461fd5a6e3d0e22143d6bed91b54928c9ee62f /arch | |
| parent | ARM: Allow SMP kernels to boot on UP systems (diff) | |
| download | linux-f9e417e901e891d139f4d5fd750959e4a862d9f7.tar.xz linux-f9e417e901e891d139f4d5fd750959e4a862d9f7.zip | |
ARM: 6402/1: Don't send IPI in smp_send_stop if there's only one CPU
No need to send IPI if there's one CPU, especially when booting
systems with CONFIG_SMP_ON_UP that may not even support IPI.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/smp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 40dc74f2b27f..32e16da5cbce 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -567,7 +567,8 @@ void smp_send_stop(void) { cpumask_t mask = cpu_online_map; cpu_clear(smp_processor_id(), mask); - send_ipi_message(&mask, IPI_CPU_STOP); + if (!cpus_empty(mask)) + send_ipi_message(&mask, IPI_CPU_STOP); } /* |