on_each_cpu_cond_mask

Name:_each_cpu_cond(): Call a function on each processor for which* the supplied function cond_func returns true, optionally waiting* for all the required CPUs to finish

Proto:void on_each_cpu_cond_mask(bool (*cond_func)(int cpu, void *info), smp_call_func_t func, void *info, bool wait, gfp_t gfp_flags, const struct cpumask *mask)

Type:void

Parameter:

Type	Parameter	Name
bool (*	cond_func
smp_call_func_t	func
void *	info
bool	wait
gfp_t	gfp_flags
const struct cpumask *	mask

690

might_sleep_if(gfpflags_allow_blocking(gfp_flags))

692

If Value is more likely to compile time(zalloc_cpumask_var( & cpus, (gfp_flags | DOC: Action modifiers* Action modifiers* ~~~~~~~~~~~~~~~~* %__GFP_NOWARN suppresses allocation failure reports.* %__GFP_COMP address compound page metadata.* %__GFP_ZERO returns a zeroed page on success.))) Then

693

Even if we don't have any preemption, we need preempt disable/enable* to be barriers, so that we don't have things like get_user/put_user* that can cause faults and scheduling migrate into our preempt-protected* region.()

694

for_each_cpu(cpu, mask)

695

If cond_func(cpu, info) Then __cpumask_set_cpu(cpu, cpus)

697

_each_cpu_mask(): Run a function on processors specified by* cpumask, which may include the local processor.*@mask: The set of cpus to run on (only runs on online subset).*@func: The function to run. This must be fast and non-blocking.

698

preempt_enable()

699

free_cpumask_var(cpus)

700

Else

705

Even if we don't have any preemption, we need preempt disable/enable* to be barriers, so that we don't have things like get_user/put_user* that can cause faults and scheduling migrate into our preempt-protected* region.()

706

for_each_cpu(cpu, mask)

707

If cond_func(cpu, info) Then

708

ret = smp_call_function_single - Run a function on a specific CPU*@func: The function to run. This must be fast and non-blocking.*@info: An arbitrary pointer to pass to the function.*@wait: If true, wait until function has completed on other CPUs.

710

WARN_ON_ONCE(ret)

712

preempt_enable()

**Caller**
Name	Describe
on_each_cpu_cond

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