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Diffstat (limited to 'arch/mips/kernel/smp.c')
-rw-r--r--arch/mips/kernel/smp.c61
1 files changed, 47 insertions, 14 deletions
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 0a022ee33b2a..9bad52ede903 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -43,10 +43,6 @@
#include <asm/time.h>
#include <asm/setup.h>
-#ifdef CONFIG_MIPS_MT_SMTC
-#include <asm/mipsmtregs.h>
-#endif /* CONFIG_MIPS_MT_SMTC */
-
volatile cpumask_t cpu_callin_map; /* Bitmask of started secondaries */
int __cpu_number_map[NR_CPUS]; /* Map physical to logical */
@@ -66,6 +62,8 @@ EXPORT_SYMBOL(cpu_sibling_map);
/* representing cpus for which sibling maps can be computed */
static cpumask_t cpu_sibling_setup_map;
+cpumask_t cpu_coherent_mask;
+
static inline void set_cpu_sibling_map(int cpu)
{
int i;
@@ -102,12 +100,6 @@ asmlinkage void start_secondary(void)
{
unsigned int cpu;
-#ifdef CONFIG_MIPS_MT_SMTC
- /* Only do cpu_probe for first TC of CPU */
- if ((read_c0_tcbind() & TCBIND_CURTC) != 0)
- __cpu_name[smp_processor_id()] = __cpu_name[0];
- else
-#endif /* CONFIG_MIPS_MT_SMTC */
cpu_probe();
cpu_report();
per_cpu_trap_init(false);
@@ -124,6 +116,7 @@ asmlinkage void start_secondary(void)
cpu = smp_processor_id();
cpu_data[cpu].udelay_val = loops_per_jiffy;
+ cpu_set(cpu, cpu_coherent_mask);
notify_cpu_starting(cpu);
set_cpu_online(cpu, true);
@@ -173,7 +166,6 @@ void smp_send_stop(void)
void __init smp_cpus_done(unsigned int max_cpus)
{
- mp_ops->cpus_done();
}
/* called from main before smp_init() */
@@ -186,6 +178,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
#ifndef CONFIG_HOTPLUG_CPU
init_cpu_present(cpu_possible_mask);
#endif
+ cpumask_copy(&cpu_coherent_mask, cpu_possible_mask);
}
/* preload SMP state for boot cpu */
@@ -238,13 +231,10 @@ static void flush_tlb_mm_ipi(void *mm)
* o collapses to normal function call on UP kernels
* o collapses to normal function call on systems with a single shared
* primary cache.
- * o CONFIG_MIPS_MT_SMTC currently implies there is only one physical core.
*/
static inline void smp_on_other_tlbs(void (*func) (void *info), void *info)
{
-#ifndef CONFIG_MIPS_MT_SMTC
smp_call_function(func, info, 1);
-#endif
}
static inline void smp_on_each_tlb(void (*func) (void *info), void *info)
@@ -404,3 +394,46 @@ void dump_send_ipi(void (*dump_ipi_callback)(void *))
}
EXPORT_SYMBOL(dump_send_ipi);
#endif
+
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+
+static DEFINE_PER_CPU(atomic_t, tick_broadcast_count);
+static DEFINE_PER_CPU(struct call_single_data, tick_broadcast_csd);
+
+void tick_broadcast(const struct cpumask *mask)
+{
+ atomic_t *count;
+ struct call_single_data *csd;
+ int cpu;
+
+ for_each_cpu(cpu, mask) {
+ count = &per_cpu(tick_broadcast_count, cpu);
+ csd = &per_cpu(tick_broadcast_csd, cpu);
+
+ if (atomic_inc_return(count) == 1)
+ smp_call_function_single_async(cpu, csd);
+ }
+}
+
+static void tick_broadcast_callee(void *info)
+{
+ int cpu = smp_processor_id();
+ tick_receive_broadcast();
+ atomic_set(&per_cpu(tick_broadcast_count, cpu), 0);
+}
+
+static int __init tick_broadcast_init(void)
+{
+ struct call_single_data *csd;
+ int cpu;
+
+ for (cpu = 0; cpu < NR_CPUS; cpu++) {
+ csd = &per_cpu(tick_broadcast_csd, cpu);
+ csd->func = tick_broadcast_callee;
+ }
+
+ return 0;
+}
+early_initcall(tick_broadcast_init);
+
+#endif /* CONFIG_GENERIC_CLOCKEVENTS_BROADCAST */