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workqueue: Remove unused work_on_cpu_safe

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The last use of the work_on_cpu_safe() macro was removed recently by
commit 9cda46babd ("crypto: n2 - remove Niagara2 SPU driver")

Remove it, and the work_on_cpu_safe_key() function it calls.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Dr. David Alan Gilbert 2025-06-23 01:30:49 +01:00 • committed by Tejun Heo
parent f11113d013
commit fc2898ea79
2 changed files with 0 additions and 38 deletions
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13
include/linux/workqueue.h
View file

@ -847,19 +847,6 @@ long work_on_cpu_key(int cpu, long (*fn)(void *),
work_on_cpu_key(_cpu, _fn, _arg, &__key); \
})
long work_on_cpu_safe_key(int cpu, long (*fn)(void *),
void *arg, struct lock_class_key *key);
/*
* A new key is defined for each caller to make sure the work
* associated with the function doesn't share its locking class.
*/
#define work_on_cpu_safe(_cpu, _fn, _arg) \
({ \
static struct lock_class_key __key; \
\
work_on_cpu_safe_key(_cpu, _fn, _arg, &__key); \
})
#endif /* CONFIG_SMP */
#ifdef CONFIG_FREEZER

25
kernel/workqueue.c
View file

@ -6771,31 +6771,6 @@ long work_on_cpu_key(int cpu, long (*fn)(void *),
return wfc.ret;
}
EXPORT_SYMBOL_GPL(work_on_cpu_key);
/**
* work_on_cpu_safe_key - run a function in thread context on a particular cpu
* @cpu: the cpu to run on
* @fn: the function to run
* @arg: the function argument
* @key: The lock class key for lock debugging purposes
*
* Disables CPU hotplug and calls work_on_cpu(). The caller must not hold
* any locks which would prevent @fn from completing.
*
* Return: The value @fn returns.
*/
long work_on_cpu_safe_key(int cpu, long (*fn)(void *),
void *arg, struct lock_class_key *key)
{
long ret = -ENODEV;
cpus_read_lock();
if (cpu_online(cpu))
ret = work_on_cpu_key(cpu, fn, arg, key);
cpus_read_unlock();
return ret;
}
EXPORT_SYMBOL_GPL(work_on_cpu_safe_key);
#endif /* CONFIG_SMP */
#ifdef CONFIG_FREEZER