AcoSail/kernel_optimize_test
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sh: p3map_sem sem2mutex conversion.

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Simple sem2mutex conversion for the p3map semaphores.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2006-11-21 11:09:41 +09:00
parent 21440cf04a
commit 52e27782e1
2 changed files with 11 additions and 26 deletions
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14
arch/sh/mm/cache-sh4.c
View File

@ -11,12 +11,8 @@
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/addrspace.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/cache.h>
#include <asm/io.h>
#include <asm/pgalloc.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
@ -83,9 +79,9 @@ static void __init emit_cache_params(void)
*/
/* Worst case assumed to be 64k cache, direct-mapped i.e. 4 synonym bits. */
#define MAX_P3_SEMAPHORES 16
#define MAX_P3_MUTEXES 16
struct semaphore p3map_sem[MAX_P3_SEMAPHORES];
struct mutex p3map_mutex[MAX_P3_MUTEXES];
void __init p3_cache_init(void)
{
@ -115,7 +111,7 @@ void __init p3_cache_init(void)
panic("%s failed.", __FUNCTION__);
for (i = 0; i < cpu_data->dcache.n_aliases; i++)
sema_init(&p3map_sem[i], 1);
mutex_init(&p3map_mutex[i]);
}
/*

23
arch/sh/mm/pg-sh4.c
View File

@ -6,22 +6,12 @@
*
* Released under the terms of the GNU GPL v2.0.
*/
#include <linux/init.h>
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/threads.h>
#include <asm/addrspace.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/cache.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <linux/mutex.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
extern struct semaphore p3map_sem[];
extern struct mutex p3map_mutex[];
#define CACHE_ALIAS (cpu_data->dcache.alias_mask)
@ -47,7 +37,7 @@ void clear_user_page(void *to, unsigned long address, struct page *page)
unsigned long flags;
entry = pfn_pte(phys_addr >> PAGE_SHIFT, PAGE_KERNEL);
down(&p3map_sem[(address & CACHE_ALIAS)>>12]);
mutex_lock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
set_pte(pte, entry);
local_irq_save(flags);
__flush_tlb_page(get_asid(), p3_addr);
@ -55,7 +45,7 @@ void clear_user_page(void *to, unsigned long address, struct page *page)
update_mmu_cache(NULL, p3_addr, entry);
__clear_user_page((void *)p3_addr, to);
pte_clear(&init_mm, p3_addr, pte);
up(&p3map_sem[(address & CACHE_ALIAS)>>12]);
mutex_unlock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
}
}
@ -83,7 +73,7 @@ void copy_user_page(void *to, void *from, unsigned long address,
unsigned long flags;
entry = pfn_pte(phys_addr >> PAGE_SHIFT, PAGE_KERNEL);
down(&p3map_sem[(address & CACHE_ALIAS)>>12]);
mutex_lock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
set_pte(pte, entry);
local_irq_save(flags);
__flush_tlb_page(get_asid(), p3_addr);
@ -91,7 +81,7 @@ void copy_user_page(void *to, void *from, unsigned long address,
update_mmu_cache(NULL, p3_addr, entry);
__copy_user_page((void *)p3_addr, from, to);
pte_clear(&init_mm, p3_addr, pte);
up(&p3map_sem[(address & CACHE_ALIAS)>>12]);
mutex_unlock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
}
}
@ -114,4 +104,3 @@ inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t
}
return pte;
}