diff options
| -rw-r--r-- | arch/sh/Kconfig | 1 | ||||
| -rw-r--r-- | arch/sh/kernel/smp.c | 48 | ||||
| -rw-r--r-- | include/asm-sh/smp.h | 14 |
3 files changed, 13 insertions, 50 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 9a854c8e527..3e7384f4619 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -688,6 +688,7 @@ config CRASH_DUMP config SMP bool "Symmetric multi-processing support" depends on SYS_SUPPORTS_SMP + select USE_GENERIC_SMP_HELPERS ---help--- This enables support for systems with more than one CPU. If you have a system with only one CPU, like most personal computers, say N. If diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 5d039d168f5..2ed8dceb297 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -36,13 +36,6 @@ EXPORT_SYMBOL(cpu_possible_map); cpumask_t cpu_online_map; EXPORT_SYMBOL(cpu_online_map); -static atomic_t cpus_booted = ATOMIC_INIT(0); - -/* - * Run specified function on a particular processor. - */ -void __smp_call_function(unsigned int cpu); - static inline void __init smp_store_cpu_info(unsigned int cpu) { struct sh_cpuinfo *c = cpu_data + cpu; @@ -178,42 +171,17 @@ void smp_send_stop(void) smp_call_function(stop_this_cpu, 0, 1, 0); } -struct smp_fn_call_struct smp_fn_call = { - .lock = __SPIN_LOCK_UNLOCKED(smp_fn_call.lock), - .finished = ATOMIC_INIT(0), -}; - -/* - * The caller of this wants the passed function to run on every cpu. If wait - * is set, wait until all cpus have finished the function before returning. - * The lock is here to protect the call structure. - * You must not call this function with disabled interrupts or from a - * hardware interrupt handler or from a bottom half handler. - */ -int smp_call_function(void (*func)(void *info), void *info, int retry, int wait) +void arch_send_call_function_ipi(cpumask_t mask) { - unsigned int nr_cpus = atomic_read(&cpus_booted); - int i; - - /* Can deadlock when called with interrupts disabled */ - WARN_ON(irqs_disabled()); - - spin_lock(&smp_fn_call.lock); - - atomic_set(&smp_fn_call.finished, 0); - smp_fn_call.fn = func; - smp_fn_call.data = info; - - for (i = 0; i < nr_cpus; i++) - if (i != smp_processor_id()) - plat_send_ipi(i, SMP_MSG_FUNCTION); - - if (wait) - while (atomic_read(&smp_fn_call.finished) != (nr_cpus - 1)); + int cpu; - spin_unlock(&smp_fn_call.lock); + for_each_cpu_mask(cpu, mask) + plat_send_ipi(cpu, SMP_MSG_FUNCTION); +} - return 0; +void arch_send_call_function_single_ipi(int cpu) +{ + plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE); } /* Not really SMP stuff ... */ diff --git a/include/asm-sh/smp.h b/include/asm-sh/smp.h index 9c8d34b07eb..593343cd26e 100644 --- a/include/asm-sh/smp.h +++ b/include/asm-sh/smp.h @@ -26,18 +26,10 @@ extern int __cpu_logical_map[NR_CPUS]; #define NO_PROC_ID (-1) -struct smp_fn_call_struct { - spinlock_t lock; - atomic_t finished; - void (*fn)(void *); - void *data; -}; - -extern struct smp_fn_call_struct smp_fn_call; - #define SMP_MSG_FUNCTION 0 #define SMP_MSG_RESCHEDULE 1 -#define SMP_MSG_NR 2 +#define SMP_MSG_FUNCTION_SINGLE 2 +#define SMP_MSG_NR 3 void plat_smp_setup(void); void plat_prepare_cpus(unsigned int max_cpus); @@ -46,6 +38,8 @@ void plat_start_cpu(unsigned int cpu, unsigned long entry_point); void plat_send_ipi(unsigned int cpu, unsigned int message); int plat_register_ipi_handler(unsigned int message, void (*handler)(void *), void *arg); +extern void arch_send_call_function_single_ipi(int cpu); +extern void arch_send_call_function_ipi(cpumask_t mask); #else |