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sparc64: Remove all cpumask_t local variables in xcall dispatch. 

All of the xcall delivery implementation is cpumask agnostic, so
we can pass around pointers to const cpumask_t objects everywhere.

The sad remaining case is the argument to arch_send_call_function_ipi().

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-08-04 16:56:15 -07:00
parent ed4d9c66eb
commit ae583885bf
1 changed files with 9 additions and 24 deletions
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33
arch/sparc64/kernel/smp.c
View File

@ -787,21 +787,17 @@ static void xcall_deliver(u64 data0, u64 data1, u64 data2, const cpumask_t *mask
* except self. Really, there are only two cases currently,
* "&cpu_online_map" and "&mm->cpu_vm_mask".
*/
static void smp_cross_call_masked(unsigned long *func, u32 ctx, u64 data1, u64 data2, const cpumask_t *mask_p)
static void smp_cross_call_masked(unsigned long *func, u32 ctx, u64 data1, u64 data2, const cpumask_t *mask)
{
u64 data0 = (((u64)ctx)<<32 | (((u64)func) & 0xffffffff));
int this_cpu = get_cpu();
cpumask_t mask;
mask = *mask_p;
if (mask_p != &cpu_online_map)
cpus_and(mask, mask, cpu_online_map);
cpu_clear(this_cpu, mask);
xcall_deliver(data0, data1, data2, mask);
}
xcall_deliver(data0, data1, data2, &mask);
/* NOTE: Caller runs local copy on master. */
put_cpu();
/* Send cross call to all processors except self. */
static void smp_cross_call(unsigned long *func, u32 ctx, u64 data1, u64 data2)
{
smp_cross_call_masked(func, ctx, data1, data2, &cpu_online_map);
}
extern unsigned long xcall_sync_tick;
@ -827,10 +823,6 @@ void arch_send_call_function_single_ipi(int cpu)
&cpumask_of_cpu(cpu));
}
/* Send cross call to all processors except self. */
#define smp_cross_call(func, ctx, data1, data2) \
smp_cross_call_masked(func, ctx, data1, data2, &cpu_online_map)
void smp_call_function_client(int irq, struct pt_regs *regs)
{
clear_softint(1 << irq);
@ -900,7 +892,6 @@ static inline void __local_flush_dcache_page(struct page *page)
void smp_flush_dcache_page_impl(struct page *page, int cpu)
{
cpumask_t mask = cpumask_of_cpu(cpu);
int this_cpu;
if (tlb_type == hypervisor)
@ -929,7 +920,7 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
}
if (data0) {
xcall_deliver(data0, __pa(pg_addr),
(u64) pg_addr, &mask);
(u64) pg_addr, &cpumask_of_cpu(cpu));
#ifdef CONFIG_DEBUG_DCFLUSH
atomic_inc(&dcpage_flushes_xcall);
#endif
@ -941,7 +932,6 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
{
cpumask_t mask = cpu_online_map;
void *pg_addr;
int this_cpu;
u64 data0;
@ -951,13 +941,9 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
this_cpu = get_cpu();
cpu_clear(this_cpu, mask);
#ifdef CONFIG_DEBUG_DCFLUSH
atomic_inc(&dcpage_flushes);
#endif
if (cpus_empty(mask))
goto flush_self;
data0 = 0;
pg_addr = page_address(page);
if (tlb_type == spitfire) {
@ -971,12 +957,11 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
}
if (data0) {
xcall_deliver(data0, __pa(pg_addr),
(u64) pg_addr, &mask);
(u64) pg_addr, &cpu_online_map);
#ifdef CONFIG_DEBUG_DCFLUSH
atomic_inc(&dcpage_flushes_xcall);
#endif
}
flush_self:
__local_flush_dcache_page(page);
put_cpu();