The patch titled
Subject: kernel/smp.c: remove 'priv' of call_single_data
has been added to the -mm tree. Its filename is
kernel-smpc-remove-priv-of-call_single_data.patch
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------------------------------------------------------
From: liguang <lig.fnst@xxxxxxxxxxxxxx>
Subject: kernel/smp.c: remove 'priv' of call_single_data
The 'priv' field is redundant; we can pass data via 'info'.
Signed-off-by: liguang <lig.fnst@xxxxxxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/smp.h | 1 -
kernel/softirq.c | 6 ++----
2 files changed, 2 insertions(+), 5 deletions(-)
diff -puN include/linux/smp.h~kernel-smpc-remove-priv-of-call_single_data include/linux/smp.h
--- a/include/linux/smp.h~kernel-smpc-remove-priv-of-call_single_data
+++ a/include/linux/smp.h
@@ -20,7 +20,6 @@ struct call_single_data {
smp_call_func_t func;
void *info;
u16 flags;
- u16 priv;
};
/* total number of cpus in this system (may exceed NR_CPUS) */
diff -puN kernel/softirq.c~kernel-smpc-remove-priv-of-call_single_data kernel/softirq.c
--- a/kernel/softirq.c~kernel-smpc-remove-priv-of-call_single_data
+++ a/kernel/softirq.c
@@ -620,8 +620,7 @@ static void remote_softirq_receive(void
unsigned long flags;
int softirq;
- softirq = cp->priv;
-
+ softirq = *(int *)cp->info;
local_irq_save(flags);
__local_trigger(cp, softirq);
local_irq_restore(flags);
@@ -631,9 +630,8 @@ static int __try_remote_softirq(struct c
{
if (cpu_online(cpu)) {
cp->func = remote_softirq_receive;
- cp->info = cp;
+ cp->info = &softirq;
cp->flags = 0;
- cp->priv = softirq;
__smp_call_function_single(cpu, cp, 0);
return 0;
_
Patches currently in -mm which might be from lig.fnst@xxxxxxxxxxxxxx are
linux-next.patch
kernel-smpc-use-=-for-csd_lock.patch
kernel-smpc-remove-priv-of-call_single_data.patch
semaphore-give-an-unlikely-for-downs-timeout.patch
semaphore-boolize-semaphore_waiters-up.patch
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