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tasklet: Remove tasklet_kill_immediate

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Ever since RCU was converted to softirq, it has no users.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20210306213658.12862-1-dave@stgolabs.net
This commit is contained in:
Davidlohr Bueso 2021-03-06 13:36:58 -08:00 committed by Thomas Gleixner
parent cbe16f35be
commit 3a0ade0c52
2 changed files with 0 additions and 33 deletions
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1
include/linux/interrupt.h
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@ -716,7 +716,6 @@ static inline void tasklet_enable(struct tasklet_struct *t)
} }
extern void tasklet_kill(struct tasklet_struct *t); extern void tasklet_kill(struct tasklet_struct *t);
extern void tasklet_kill_immediate(struct tasklet_struct *t, unsigned int cpu);
extern void tasklet_init(struct tasklet_struct *t, extern void tasklet_init(struct tasklet_struct *t,
void (*func)(unsigned long), unsigned long data); void (*func)(unsigned long), unsigned long data);
extern void tasklet_setup(struct tasklet_struct *t, extern void tasklet_setup(struct tasklet_struct *t,

32
kernel/softirq.c
View File

@ -658,38 +658,6 @@ static void run_ksoftirqd(unsigned int cpu)
} }
#ifdef CONFIG_HOTPLUG_CPU #ifdef CONFIG_HOTPLUG_CPU
/*
* tasklet_kill_immediate is called to remove a tasklet which can already be
* scheduled for execution on @cpu.
*
* Unlike tasklet_kill, this function removes the tasklet
* _immediately_, even if the tasklet is in TASKLET_STATE_SCHED state.
*
* When this function is called, @cpu must be in the CPU_DEAD state.
*/
void tasklet_kill_immediate(struct tasklet_struct *t, unsigned int cpu)
{
struct tasklet_struct **i;
BUG_ON(cpu_online(cpu));
BUG_ON(test_bit(TASKLET_STATE_RUN, &t->state));
if (!test_bit(TASKLET_STATE_SCHED, &t->state))
return;
/* CPU is dead, so no lock needed. */
for (i = &per_cpu(tasklet_vec, cpu).head; *i; i = &(*i)->next) {
if (*i == t) {
*i = t->next;
/* If this was the tail element, move the tail ptr */
if (*i == NULL)
per_cpu(tasklet_vec, cpu).tail = i;
return;
}
}
BUG();
}
static int takeover_tasklets(unsigned int cpu) static int takeover_tasklets(unsigned int cpu)
{ {
/* CPU is dead, so no lock needed. */ /* CPU is dead, so no lock needed. */