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Commit bff2dc42 authored by David Daney's avatar David Daney Committed by Linus Torvalds
Browse files

smp.h: move !SMP version of on_each_cpu() out-of-line 



All of the other non-trivial !SMP versions of functions in smp.h are
out-of-line in up.c.  Move on_each_cpu() there as well.

This allows us to get rid of the #include <linux/irqflags.h>.  The
drawback is that this makes both the x86_64 and i386 defconfig !SMP
kernels about 200 bytes larger each.

Signed-off-by: default avatarDavid Daney <david.daney@cavium.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 081192b2

include/linux/smp.h

+5 −16
Original line number Diff line number Diff line
@@ -11,7 +11,6 @@ 
#include <linux/list.h>

#include <linux/cpumask.h>

#include <linux/init.h>

#include <linux/irqflags.h>



extern void cpu_idle(void);
@@ -29,6 +28,11 @@ extern unsigned int total_cpus; 
int smp_call_function_single(int cpuid, smp_call_func_t func, void *info,

			     int wait);



/*

 * Call a function on all processors

 */

int on_each_cpu(smp_call_func_t func, void *info, int wait);



/*

 * Call a function on processors specified by mask, which might include

 * the local one.
@@ -111,11 +115,6 @@ void generic_smp_call_function_single_interrupt(void); 
static inline void call_function_init(void) { }

#endif



/*

 * Call a function on all processors

 */

int on_each_cpu(smp_call_func_t func, void *info, int wait);



/*

 * Mark the boot cpu "online" so that it can call console drivers in

 * printk() and can access its per-cpu storage.
@@ -141,16 +140,6 @@ static inline int up_smp_call_function(smp_call_func_t func, void *info) 
#define smp_call_function(func, info, wait) \

			(up_smp_call_function(func, info))



static inline int on_each_cpu(smp_call_func_t func, void *info, int wait)

{

	unsigned long flags;



	local_irq_save(flags);

	func(info);

	local_irq_restore(flags);

	return 0;

}



static inline void smp_send_reschedule(int cpu) { }

#define smp_prepare_boot_cpu()			do {} while (0)

#define smp_call_function_many(mask, func, info, wait) \

kernel/up.c

+11 −0
Original line number Diff line number Diff line
@@ -22,6 +22,17 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, 
}

EXPORT_SYMBOL(smp_call_function_single);



int on_each_cpu(smp_call_func_t func, void *info, int wait)

{

	unsigned long flags;



	local_irq_save(flags);

	func(info);

	local_irq_restore(flags);

	return 0;

}

EXPORT_SYMBOL(on_each_cpu);



/*

 * Note we still need to test the mask even for UP

 * because we actually can get an empty mask from