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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-07-22 20:47:25 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-25 16:12:01 +0200 |
| commit | d0a7166bc7ac4feac5c482ebe8b2417aa3302ef4 (patch) | |
| tree | 430e032a096dd649e820a6d7beaf2353f2229dde /arch/x86/kernel/smp.c | |
| parent | x86/apic: Provide and use helper for send_IPI_allbutself() (diff) | |
| download | linux-d0a7166bc7ac4feac5c482ebe8b2417aa3302ef4.tar.xz linux-d0a7166bc7ac4feac5c482ebe8b2417aa3302ef4.zip | |
x86/smp: Move smp_function_call implementations into IPI code
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
Diffstat (limited to 'arch/x86/kernel/smp.c')
| -rw-r--r-- | arch/x86/kernel/smp.c | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c index b8ad1876a081..b8d4e9c3c070 100644 --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -115,46 +115,6 @@ static atomic_t stopping_cpu = ATOMIC_INIT(-1); static bool smp_no_nmi_ipi = false; -/* - * this function sends a 'reschedule' IPI to another CPU. - * it goes straight through and wastes no time serializing - * anything. Worst case is that we lose a reschedule ... - */ -static 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); -} - static int smp_stop_nmi_callback(unsigned int val, struct pt_regs *regs) { /* We are registered on stopping cpu too, avoid spurious NMI */ |