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authorSteven Miao <realmz6@gmail.com>2013-07-09 15:39:53 +0800
committerSteven Miao <realmz6@gmail.com>2013-07-09 15:50:38 +0800
commit150382a53d11256e5666c86525c8bf8d23684532 (patch)
tree5a0e5a70ba6006456c4d28ec53e6bf35c353e90c /arch/blackfin/mach-bf561
parentb700a3f304cfc8589f3a5b6012bdd3689b778033 (diff)
downloadlinux-150382a53d11256e5666c86525c8bf8d23684532.tar.bz2
smp: refine bf561 smpboot code
release boot lock earlier to let coreb do setup and calibrate set coreb online later after initialization ready add BFIN_IPI_NONE IPI type drop unnecesarry smp_mb() and using atomic type Signed-off-by: Steven Miao <realmz6@gmail.com>
Diffstat (limited to 'arch/blackfin/mach-bf561')
-rw-r--r--arch/blackfin/mach-bf561/smp.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/blackfin/mach-bf561/smp.c b/arch/blackfin/mach-bf561/smp.c
index ab1c617b9cfc..c77a23bc9de3 100644
--- a/arch/blackfin/mach-bf561/smp.c
+++ b/arch/blackfin/mach-bf561/smp.c
@@ -69,7 +69,6 @@ void __cpuinit platform_secondary_init(unsigned int cpu)
SSYNC();
/* We are done with local CPU inits, unblock the boot CPU. */
- set_cpu_online(cpu, true);
spin_lock(&boot_lock);
spin_unlock(&boot_lock);
}
@@ -91,7 +90,9 @@ int __cpuinit platform_boot_secondary(unsigned int cpu, struct task_struct *idle
SSYNC();
}
- timeout = jiffies + 1 * HZ;
+ timeout = jiffies + HZ;
+ /* release the lock and let coreb run */
+ spin_unlock(&boot_lock);
while (time_before(jiffies, timeout)) {
if (cpu_online(cpu))
break;
@@ -100,8 +101,6 @@ int __cpuinit platform_boot_secondary(unsigned int cpu, struct task_struct *idle
}
if (cpu_online(cpu)) {
- /* release the lock and let coreb run */
- spin_unlock(&boot_lock);
return 0;
} else
panic("CPU%u: processor failed to boot\n", cpu);