The following commit has been merged into the smp/core branch of tip:
Commit-ID: e188f0a50f637391f440b9bf0a1066db71a20889
Gitweb: https://git.kernel.org/tip/e188f0a50f637391f440b9bf0a1066db71a20889
Author: Peter Xu <peterx@xxxxxxxxxx>
AuthorDate: Mon, 16 Dec 2019 16:31:24 -05:00
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Fri, 06 Mar 2020 13:42:28 +01:00
MIPS: smp: Remove tick_broadcast_count
Now smp_call_function_single_async() provides the protection that
we'll return with -EBUSY if the csd object is still pending, then we
don't need the tick_broadcast_count counter any more.
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/20191216213125.9536-3-peterx@xxxxxxxxxx
---
arch/mips/kernel/smp.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index f510c00..0def624 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -696,29 +696,22 @@ EXPORT_SYMBOL(flush_tlb_one);
#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
-static DEFINE_PER_CPU(atomic_t, tick_broadcast_count);
static DEFINE_PER_CPU(call_single_data_t, tick_broadcast_csd);
void tick_broadcast(const struct cpumask *mask)
{
- atomic_t *count;
call_single_data_t *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);
+ 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)
|