diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2012-10-09 21:20:05 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-10-09 21:20:05 +0200 |
| commit | db8c246937713e60b7628661ccc187eeb81f2bae (patch) | |
| tree | 6351e8bca23eef40fce85396d1c6f6cfffbd4b66 /arch/powerpc/kernel/smp.c | |
| parent | c5f66e99b7cb091e3d51ae8e8156892e8feb7fa3 (diff) | |
| parent | 28f2b02bc581ffc835bc1691b18d03f62fcf0395 (diff) | |
Merge branch 'fortglx/3.7/time' of git://git.linaro.org/people/jstultz/linux into timers/core
Diffstat (limited to 'arch/powerpc/kernel/smp.c')
| -rw-r--r-- | arch/powerpc/kernel/smp.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index e4cb34322de..8d4214afc21 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -48,6 +48,7 @@ #ifdef CONFIG_PPC64 #include <asm/paca.h> #endif +#include <asm/vdso.h> #include <asm/debug.h> #ifdef DEBUG @@ -197,8 +198,15 @@ void smp_muxed_ipi_message_pass(int cpu, int msg) struct cpu_messages *info = &per_cpu(ipi_message, cpu); char *message = (char *)&info->messages; + /* + * Order previous accesses before accesses in the IPI handler. + */ + smp_mb(); message[msg] = 1; - mb(); + /* + * cause_ipi functions are required to include a full barrier + * before doing whatever causes the IPI. + */ smp_ops->cause_ipi(cpu, info->data); } @@ -210,7 +218,7 @@ irqreturn_t smp_ipi_demux(void) mb(); /* order any irq clear */ do { - all = xchg_local(&info->messages, 0); + all = xchg(&info->messages, 0); #ifdef __BIG_ENDIAN if (all & (1 << (24 - 8 * PPC_MSG_CALL_FUNCTION))) @@ -570,8 +578,9 @@ void __devinit start_secondary(void *unused) #ifdef CONFIG_PPC64 if (system_state == SYSTEM_RUNNING) vdso_data->processorCount++; + + vdso_getcpu_init(); #endif - ipi_call_lock(); notify_cpu_starting(cpu); set_cpu_online(cpu, true); /* Update sibling maps */ @@ -601,7 +610,6 @@ void __devinit start_secondary(void *unused) of_node_put(np); } of_node_put(l2_cache); - ipi_call_unlock(); local_irq_enable(); |