Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
stop_machine: Remove deprecated stop_machine_run
Everyone should be using stop_machine() now. The staged API
transition helped life in linux-next.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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include/linux/stop_machine.h
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include/linux/stop_machine.h
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/* "Bogolock": stop the entire machine, disable interrupts. This is a
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very heavy lock, which is equivalent to grabbing every spinlock
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(and more). So the "read" side to such a lock is anything which
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diables preeempt. */
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disables preeempt. */
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#include <linux/cpu.h>
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#include <linux/cpumask.h>
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#include <asm/system.h>
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#if defined(CONFIG_STOP_MACHINE) && defined(CONFIG_SMP)
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/* Deprecated, but useful for transition. */
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#define ALL_CPUS ~0U
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/**
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* stop_machine: freeze the machine on all CPUs and run this function
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return ret;
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}
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#endif /* CONFIG_SMP */
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static inline int __deprecated stop_machine_run(int (*fn)(void *), void *data,
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unsigned int cpu)
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{
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/* If they don't care which cpu fn runs on, just pick one. */
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if (cpu == NR_CPUS)
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return stop_machine(fn, data, NULL);
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else if (cpu == ~0U)
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return stop_machine(fn, data, &cpu_possible_map);
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else {
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cpumask_t cpus = cpumask_of_cpu(cpu);
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return stop_machine(fn, data, &cpus);
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}
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}
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#endif /* _LINUX_STOP_MACHINE */