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| author | Arnd Bergmann <arnd@arndb.de> | 2011-07-28 15:25:46 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-07-28 15:25:46 +0000 |
| commit | 6124a4e430b64d1577438c8648c59e996d02e73e (patch) | |
| tree | 49cfafad785d1c9e403a5b0d755298b9af2c260f /arch/arm/mach-msm/platsmp.c | |
| parent | 8e267f3da5f117d2f1316cf6ddf740f93f1c73aa (diff) | |
| parent | 580975d7f48d7d047e22bb0f42adf7557801d8d4 (diff) | |
Merge branch 'imx/dt' into next/dt
Diffstat (limited to 'arch/arm/mach-msm/platsmp.c')
| -rw-r--r-- | arch/arm/mach-msm/platsmp.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/arm/mach-msm/platsmp.c b/arch/arm/mach-msm/platsmp.c index 315b9f36532..1a1af9e5625 100644 --- a/arch/arm/mach-msm/platsmp.c +++ b/arch/arm/mach-msm/platsmp.c @@ -18,6 +18,7 @@ #include <asm/hardware/gic.h> #include <asm/cacheflush.h> +#include <asm/cputype.h> #include <asm/mach-types.h> #include <mach/msm_iomap.h> @@ -40,6 +41,12 @@ volatile int pen_release = -1; static DEFINE_SPINLOCK(boot_lock); +static inline int get_core_count(void) +{ + /* 1 + the PART[1:0] field of MIDR */ + return ((read_cpuid_id() >> 4) & 3) + 1; +} + void __cpuinit platform_secondary_init(unsigned int cpu) { /* Configure edge-triggered PPIs */ @@ -147,9 +154,9 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) */ void __init smp_init_cpus(void) { - unsigned int i; + unsigned int i, ncores = get_core_count(); - for (i = 0; i < NR_CPUS; i++) + for (i = 0; i < ncores; i++) set_cpu_possible(i, true); set_smp_cross_call(gic_raise_softirq); |