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x86/smp: Move smp_function_call implementations into IPI code

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Move it where it belongs. That allows to keep all the shorthand logic in
one place.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190722105220.677835995@linutronix.de
This commit is contained in:
Thomas Gleixner
2019-07-22 20:47:25 +02:00
parent 22ca7ee933
commit d0a7166bc7
3 changed files with 41 additions and 40 deletions
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40
arch/x86/kernel/apic/ipi.c
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@@ -62,6 +62,46 @@ void apic_send_IPI_allbutself(unsigned int vector)
apic->send_IPI_mask_allbutself(cpu_online_mask, vector);
}
/*
* Send a 'reschedule' IPI to another CPU. It goes straight through and
* wastes no time serializing anything. Worst case is that we lose a
* reschedule ...
*/
void native_smp_send_reschedule(int cpu)
{
if (unlikely(cpu_is_offline(cpu))) {
WARN(1, "sched: Unexpected reschedule of offline CPU#%d!\n", cpu);
return;
}
apic->send_IPI(cpu, RESCHEDULE_VECTOR);
}
void native_send_call_func_single_ipi(int cpu)
{
apic->send_IPI(cpu, CALL_FUNCTION_SINGLE_VECTOR);
}
void native_send_call_func_ipi(const struct cpumask *mask)
{
cpumask_var_t allbutself;
if (!alloc_cpumask_var(&allbutself, GFP_ATOMIC)) {
apic->send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
return;
}
cpumask_copy(allbutself, cpu_online_mask);
__cpumask_clear_cpu(smp_processor_id(), allbutself);
if (cpumask_equal(mask, allbutself) &&
cpumask_equal(cpu_online_mask, cpu_callout_mask))
apic->send_IPI_allbutself(CALL_FUNCTION_VECTOR);
else
apic->send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
free_cpumask_var(allbutself);
}
#endif /* CONFIG_SMP */
static inline int __prepare_ICR2(unsigned int mask)