xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86 smp: modify send_IPI_mask interface to accept cpumask_t pointers

Browse Source 
Impact: cleanup, change parameter passing

  * Change genapic interfaces to accept cpumask_t pointers where possible.

  * Modify external callers to use cpumask_t pointers in function calls.

  * Create new send_IPI_mask_allbutself which is the same as the
    send_IPI_mask functions but removes smp_processor_id() from list.
    This removes another common need for a temporary cpumask_t variable.

  * Functions that used a temp cpumask_t variable for:

	cpumask_t allbutme = cpu_online_map;

	cpu_clear(smp_processor_id(), allbutme);
	if (!cpus_empty(allbutme))
		...

    become:

	if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu)))
		...

  * Other minor code optimizations (like using cpus_clear instead of
    CPU_MASK_NONE, etc.)

Applies to linux-2.6.tip/master.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Travis
2008-12-16 17:33:52 -08:00
parent 36f5101a60
commit e7986739a7
30 changed files with 380 additions and 273 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
arch/x86/include/asm/bigsmp/ipi.h
View File

@@ -1,9 +1,10 @@
#ifndef __ASM_MACH_IPI_H
#define __ASM_MACH_IPI_H
void send_IPI_mask_sequence(cpumask_t mask, int vector);
void send_IPI_mask_sequence(const cpumask_t *mask, int vector);
void send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
static inline void send_IPI_mask(cpumask_t mask, int vector)
static inline void send_IPI_mask(const cpumask_t *mask, int vector)
{
send_IPI_mask_sequence(mask, vector);
}
@@ -14,12 +15,12 @@ static inline void send_IPI_allbutself(int vector)
cpu_clear(smp_processor_id(), mask);
if (!cpus_empty(mask))
send_IPI_mask(mask, vector);
send_IPI_mask(&mask, vector);
}
static inline void send_IPI_all(int vector)
{
send_IPI_mask(cpu_online_map, vector);
send_IPI_mask(&cpu_online_map, vector);
}
#endif /* __ASM_MACH_IPI_H */