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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-10-20 22:04:18 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-10-20 22:06:57 +0100 |
| commit | a06f916b7a9b57447ceb875eb0a89f1a66b31bca (patch) | |
| tree | a8a9d7c5e91a08f253107ffcf066dbeb4f7d9d34 /arch/arm/mach-vexpress | |
| parent | 5a567d78c437e3be1c512734cdfe64b4ae6b82d7 (diff) | |
| download | linux-a06f916b7a9b57447ceb875eb0a89f1a66b31bca.tar.bz2 | |
ARM: smp: fix clipping of number of CPUs
Rather than clipping the number of CPUs using the compile-time NR_CPUS
constant, use the runtime nr_cpu_ids value instead. This allows the
nr_cpus command line option to work as expected.
Cc: <stable@kernel.org>
Reported-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-vexpress')
| -rw-r--r-- | arch/arm/mach-vexpress/ct-ca9x4.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c index bfd32f52c2db..2b1e836a76ed 100644 --- a/arch/arm/mach-vexpress/ct-ca9x4.c +++ b/arch/arm/mach-vexpress/ct-ca9x4.c @@ -221,6 +221,12 @@ static void ct_ca9x4_init_cpu_map(void) { int i, ncores = scu_get_core_count(MMIO_P2V(A9_MPCORE_SCU)); + if (ncores > nr_cpu_ids) { + pr_warn("SMP: %u cores greater than maximum (%u), clipping\n", + ncores, nr_cpu_ids); + ncores = nr_cpu_ids; + } + for (i = 0; i < ncores; ++i) set_cpu_possible(i, true); |