include/linux/smp.h

1 /* SPDX-License-Identifier: GPL-2.0 */
54 			   void *info, bool wait, const struct cpumask *mask);
60  * Architecture-dependent code may override them.
67  * Call a function on all processors
75  * on_each_cpu_mask(): Run a function on processors specified by
77  * @mask: The set of cpus to run on (only runs on online subset).
78  * @func: The function to run. This must be fast and non-blocking.
79  * @info: An arbitrary pointer to pass to the function.
80  * @wait: If true, wait (atomically) until function has completed
85  * You must not call this function with disabled interrupts or from a
90 static inline void on_each_cpu_mask(const struct cpumask *mask,  in on_each_cpu_mask()  argument
93 	on_each_cpu_cond_mask(NULL, func, info, wait, mask);  in on_each_cpu_mask()
97  * Call a function on each processor for which the supplied function
116  * main cross-CPU interfaces, handles INIT, TLB flush, STOP, etc.
131  * callsite IP should be sufficient for root-causing IPIs sent from here.
154  * Call a function on all other processors
157 void smp_call_function_many(const struct cpumask *mask,
160 int smp_call_function_any(const struct cpumask *mask,
176  * printk() and can access its per-cpu storage.
207 #define smp_call_function_many(mask, func, info, wait) \  argument
212 smp_call_function_any(const struct cpumask *mask, smp_call_func_t func,  in smp_call_function_any()  argument
236  * raw_processor_id() - get the current (unstable) CPU id
243  * smp_processor_id() - get the current (stable) CPU id
250  *  - IRQs are disabled;
251  *  - preemption is disabled;
252  *  - the task is CPU affine.
260  * For example, x86 uses an IRQ-safe asm-volatile read for the unstable but a