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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-12-03 10:42:58 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-12-20 15:08:26 +0000 |
| commit | bbc3d14e9aca023bb98e580aa1c9350af8effdb1 (patch) | |
| tree | d4b70bc67c04d1cbe05948a9368f916198237dbc /arch/arm/mach-omap2/omap-smp.c | |
| parent | 28e18293cf0f8d23a0950d7b1d2212d11af494dc (diff) | |
| download | linux-stable-bbc3d14e9aca023bb98e580aa1c9350af8effdb1.tar.gz linux-stable-bbc3d14e9aca023bb98e580aa1c9350af8effdb1.tar.bz2 linux-stable-bbc3d14e9aca023bb98e580aa1c9350af8effdb1.zip | |
ARM: SMP: move CPU number sanity checks to smp_init_cpus()
Ensure that the number of CPUs is sanity checked before setting
the number of possible CPUs. This avoids any chance of overflowing
the cpu_possible bitmap.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-omap2/omap-smp.c')
| -rw-r--r-- | arch/arm/mach-omap2/omap-smp.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c index 56a8bce247c8..3c87468ce9cb 100644 --- a/arch/arm/mach-omap2/omap-smp.c +++ b/arch/arm/mach-omap2/omap-smp.c @@ -120,16 +120,6 @@ void __init smp_init_cpus(void) ncores = get_core_count(); - for (i = 0; i < ncores; i++) - set_cpu_possible(i, true); -} - -void __init smp_prepare_cpus(unsigned int max_cpus) -{ - unsigned int ncores = get_core_count(); - unsigned int cpu = smp_processor_id(); - int i; - /* sanity check */ if (ncores == 0) { printk(KERN_ERR @@ -144,6 +134,17 @@ void __init smp_prepare_cpus(unsigned int max_cpus) ncores, NR_CPUS); ncores = NR_CPUS; } + + for (i = 0; i < ncores; i++) + set_cpu_possible(i, true); +} + +void __init smp_prepare_cpus(unsigned int max_cpus) +{ + unsigned int ncores = num_possible_cpus(); + unsigned int cpu = smp_processor_id(); + int i; + smp_store_cpu_info(cpu); /* |