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authorAaro Koskinen <aaro.koskinen@iki.fi>2014-06-28 00:59:51 +0300
committerRalf Baechle <ralf@linux-mips.org>2014-08-02 00:06:42 +0200
commit5ca0e377a649149d717569bfd53e236d474e1331 (patch)
tree434c3c69ce5c3782c0a6a4e6dd4134c017c9c3d2 /arch/mips/cavium-octeon
parentf64988f13e82dd1797e59b26c8728d26c332aa43 (diff)
downloadop-kernel-dev-5ca0e377a649149d717569bfd53e236d474e1331.zip
op-kernel-dev-5ca0e377a649149d717569bfd53e236d474e1331.tar.gz
MIPS: OCTEON: support disabling HOTPLUG_CPU run-time
If nosmp kernel option given, we can assume HOTPLUG_CPU is disabled. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7202/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/cavium-octeon')
-rw-r--r--arch/mips/cavium-octeon/smp.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 2c8d156..ea96930 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -84,6 +84,9 @@ static void octeon_smp_hotplug_setup(void)
#ifdef CONFIG_HOTPLUG_CPU
struct linux_app_boot_info *labi;
+ if (!setup_max_cpus)
+ return;
+
labi = (struct linux_app_boot_info *)PHYS_TO_XKSEG_CACHED(LABI_ADDR_IN_BOOTLOADER);
if (labi->labi_signature != LABI_SIGNATURE)
panic("The bootloader version on this board is incorrect.");
@@ -129,7 +132,7 @@ static void octeon_smp_setup(void)
* will assign CPU numbers for possible cores as well. Cores
* are always consecutively numberd from 0.
*/
- for (id = 0; id < num_cores && id < NR_CPUS; id++) {
+ for (id = 0; setup_max_cpus && id < num_cores && id < NR_CPUS; id++) {
if (!(core_mask & (1 << id))) {
set_cpu_possible(cpus, true);
__cpu_number_map[id] = cpus;
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