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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-08-08 14:56:19 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-08-08 14:56:19 +0900 |
| commit | 18d4ed4342c14ebeebe60d267b171053efcdfa87 (patch) | |
| tree | f315e77f66cbb70869e2f80cde5c18380a80901e /arch/arm/kernel/smp.c | |
| parent | 722d0daf2b607a32dad1357bf797e3803484af0a (diff) | |
| parent | 22de4534ae12d61257fc0e53d2571686b03305bc (diff) | |
| download | linux-18d4ed4342c14ebeebe60d267b171053efcdfa87.tar.gz linux-18d4ed4342c14ebeebe60d267b171053efcdfa87.tar.bz2 linux-18d4ed4342c14ebeebe60d267b171053efcdfa87.zip | |
Merge branch 'for-3.1' into for-3.2
Conflict due to the fix for the register map failure - taken the for-3.1
version.
Conflicts:
sound/soc/codecs/sgtl5000.c
Diffstat (limited to 'arch/arm/kernel/smp.c')
| -rw-r--r-- | arch/arm/kernel/smp.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 344e52b16c8c..d88ff0230e82 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -27,7 +27,7 @@ #include <linux/clockchips.h> #include <linux/completion.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/cacheflush.h> #include <asm/cpu.h> #include <asm/cputype.h> @@ -318,9 +318,13 @@ asmlinkage void __cpuinit secondary_start_kernel(void) smp_store_cpu_info(cpu); /* - * OK, now it's safe to let the boot CPU continue + * OK, now it's safe to let the boot CPU continue. Wait for + * the CPU migration code to notice that the CPU is online + * before we continue. */ set_cpu_online(cpu, true); + while (!cpu_active(cpu)) + cpu_relax(); /* * OK, it's off to the idle thread for us @@ -361,8 +365,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus) */ if (max_cpus > ncores) max_cpus = ncores; - - if (max_cpus > 1) { + if (ncores > 1 && max_cpus) { /* * Enable the local timer or broadcast device for the * boot CPU, but only if we have more than one CPU. @@ -370,6 +373,14 @@ void __init smp_prepare_cpus(unsigned int max_cpus) percpu_timer_setup(); /* + * Initialise the present map, which describes the set of CPUs + * actually populated at the present time. A platform should + * re-initialize the map in platform_smp_prepare_cpus() if + * present != possible (e.g. physical hotplug). + */ + init_cpu_present(&cpu_possible_map); + + /* * Initialise the SCU if there are more than one CPU * and let them know where to start. */ |