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List: linux-sparc
Subject: [PATCH 04/18] sparc32: use void * in nocache get/free
From: Sam Ravnborg <sam () ravnborg ! org>
Date: 2012-07-26 21:02:14
Message-ID: 1343336548-3879-4-git-send-email-sam () ravnborg ! org
[Download RAW message or body]
This allowed to us to kill a lot of casts,
with no loss of readability in any places
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
arch/sparc/include/asm/pgalloc_32.h | 16 ++++----
arch/sparc/mm/srmmu.c | 61 +++++++++++++++++++---------------
2 files changed, 42 insertions(+), 35 deletions(-)
diff --git a/arch/sparc/include/asm/pgalloc_32.h \
b/arch/sparc/include/asm/pgalloc_32.h index e5b169b..bf20809 100644
--- a/arch/sparc/include/asm/pgalloc_32.h
+++ b/arch/sparc/include/asm/pgalloc_32.h
@@ -18,8 +18,8 @@ extern struct pgtable_cache_struct {
unsigned long pgd_cache_sz;
} pgt_quicklists;
-unsigned long srmmu_get_nocache(int size, int align);
-void srmmu_free_nocache(unsigned long vaddr, int size);
+void *srmmu_get_nocache(int size, int align);
+void srmmu_free_nocache(void *addr, int size);
#define pgd_quicklist (pgt_quicklists.pgd_cache)
#define pmd_quicklist ((unsigned long *)0)
@@ -32,7 +32,7 @@ void srmmu_free_nocache(unsigned long vaddr, int size);
pgd_t *get_pgd_fast(void);
static inline void free_pgd_fast(pgd_t *pgd)
{
- srmmu_free_nocache((unsigned long)pgd, SRMMU_PGD_TABLE_SIZE);
+ srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
}
#define pgd_free(mm, pgd) free_pgd_fast(pgd)
@@ -50,13 +50,13 @@ static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
unsigned long address)
{
- return (pmd_t *)srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
- SRMMU_PMD_TABLE_SIZE);
+ return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
+ SRMMU_PMD_TABLE_SIZE);
}
static inline void free_pmd_fast(pmd_t * pmd)
{
- srmmu_free_nocache((unsigned long)pmd, SRMMU_PMD_TABLE_SIZE);
+ srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
}
#define pmd_free(mm, pmd) free_pmd_fast(pmd)
@@ -73,13 +73,13 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long \
address); static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
unsigned long address)
{
- return (pte_t *)srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
+ return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
}
static inline void free_pte_fast(pte_t *pte)
{
- srmmu_free_nocache((unsigned long)pte, PTE_SIZE);
+ srmmu_free_nocache(pte, PTE_SIZE);
}
#define pte_free_kernel(mm, pte) free_pte_fast(pte)
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index 4b00f69..146742b 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -151,49 +151,55 @@ pte_t *pte_offset_kernel(pmd_t *dir, unsigned long address)
* align: bytes, number to align at.
* Returns the virtual address of the allocated area.
*/
-static unsigned long __srmmu_get_nocache(int size, int align)
+static void *__srmmu_get_nocache(int size, int align)
{
int offset;
+ unsigned long addr;
if (size < SRMMU_NOCACHE_BITMAP_SHIFT) {
- printk("Size 0x%x too small for nocache request\n", size);
+ printk(KERN_ERR "Size 0x%x too small for nocache request\n",
+ size);
size = SRMMU_NOCACHE_BITMAP_SHIFT;
}
- if (size & (SRMMU_NOCACHE_BITMAP_SHIFT-1)) {
- printk("Size 0x%x unaligned int nocache request\n", size);
- size += SRMMU_NOCACHE_BITMAP_SHIFT-1;
+ if (size & (SRMMU_NOCACHE_BITMAP_SHIFT - 1)) {
+ printk(KERN_ERR "Size 0x%x unaligned int nocache request\n",
+ size);
+ size += SRMMU_NOCACHE_BITMAP_SHIFT - 1;
}
BUG_ON(align > SRMMU_NOCACHE_ALIGN_MAX);
offset = bit_map_string_get(&srmmu_nocache_map,
- size >> SRMMU_NOCACHE_BITMAP_SHIFT,
- align >> SRMMU_NOCACHE_BITMAP_SHIFT);
+ size >> SRMMU_NOCACHE_BITMAP_SHIFT,
+ align >> SRMMU_NOCACHE_BITMAP_SHIFT);
if (offset == -1) {
- printk("srmmu: out of nocache %d: %d/%d\n",
- size, (int) srmmu_nocache_size,
- srmmu_nocache_map.used << SRMMU_NOCACHE_BITMAP_SHIFT);
+ printk(KERN_ERR "srmmu: out of nocache %d: %d/%d\n",
+ size, (int) srmmu_nocache_size,
+ srmmu_nocache_map.used << SRMMU_NOCACHE_BITMAP_SHIFT);
return 0;
}
- return (SRMMU_NOCACHE_VADDR + (offset << SRMMU_NOCACHE_BITMAP_SHIFT));
+ addr = SRMMU_NOCACHE_VADDR + (offset << SRMMU_NOCACHE_BITMAP_SHIFT);
+ return (void *)addr;
}
-unsigned long srmmu_get_nocache(int size, int align)
+void *srmmu_get_nocache(int size, int align)
{
- unsigned long tmp;
+ void *tmp;
tmp = __srmmu_get_nocache(size, align);
if (tmp)
- memset((void *)tmp, 0, size);
+ memset(tmp, 0, size);
return tmp;
}
-void srmmu_free_nocache(unsigned long vaddr, int size)
+void srmmu_free_nocache(void *addr, int size)
{
+ unsigned long vaddr;
int offset;
+ vaddr = (unsigned long)addr;
if (vaddr < SRMMU_NOCACHE_VADDR) {
printk("Vaddr %lx is smaller than nocache base 0x%lx\n",
vaddr, (unsigned long)SRMMU_NOCACHE_VADDR);
@@ -271,7 +277,7 @@ static void __init srmmu_nocache_init(void)
srmmu_nocache_bitmap = __alloc_bootmem(bitmap_bits >> 3, SMP_CACHE_BYTES, 0UL);
bit_map_init(&srmmu_nocache_map, srmmu_nocache_bitmap, bitmap_bits);
- srmmu_swapper_pg_dir = (pgd_t *)__srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, \
SRMMU_PGD_TABLE_SIZE); + srmmu_swapper_pg_dir = \
__srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE); \
memset(__nocache_fix(srmmu_swapper_pg_dir), 0, SRMMU_PGD_TABLE_SIZE); init_mm.pgd = \
srmmu_swapper_pg_dir;
@@ -304,7 +310,7 @@ pgd_t *get_pgd_fast(void)
{
pgd_t *pgd = NULL;
- pgd = (pgd_t *)__srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE);
+ pgd = __srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE);
if (pgd) {
pgd_t *init = pgd_offset_k(0);
memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
@@ -344,8 +350,9 @@ void pte_free(struct mm_struct *mm, pgtable_t pte)
if (p == 0)
BUG();
p = page_to_pfn(pte) << PAGE_SHIFT; /* Physical address */
- p = (unsigned long) __nocache_va(p); /* Nocached virtual */
- srmmu_free_nocache(p, PTE_SIZE);
+
+ /* free non cached virtual address*/
+ srmmu_free_nocache(__nocache_va(p), PTE_SIZE);
}
/*
@@ -593,7 +600,7 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned \
long start, while (start < end) {
pgdp = pgd_offset_k(start);
if (pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
- pmdp = (pmd_t *) __srmmu_get_nocache(
+ pmdp = __srmmu_get_nocache(
SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
if (pmdp == NULL)
early_pgtable_allocfail("pmd");
@@ -602,7 +609,7 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned \
long start, }
pmdp = pmd_offset(__nocache_fix(pgdp), start);
if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
- ptep = (pte_t *)__srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
+ ptep = __srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
if (ptep == NULL)
early_pgtable_allocfail("pte");
memset(__nocache_fix(ptep), 0, PTE_SIZE);
@@ -624,7 +631,7 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long \
start, while (start < end) {
pgdp = pgd_offset_k(start);
if (pgd_none(*pgdp)) {
- pmdp = (pmd_t *)__srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
+ pmdp = __srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
if (pmdp == NULL)
early_pgtable_allocfail("pmd");
memset(pmdp, 0, SRMMU_PMD_TABLE_SIZE);
@@ -632,7 +639,7 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long \
start, }
pmdp = pmd_offset(pgdp, start);
if (srmmu_pmd_none(*pmdp)) {
- ptep = (pte_t *) __srmmu_get_nocache(PTE_SIZE,
+ ptep = __srmmu_get_nocache(PTE_SIZE,
PTE_SIZE);
if (ptep == NULL)
early_pgtable_allocfail("pte");
@@ -707,7 +714,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long \
start, continue;
}
if (pgd_none(*(pgd_t *)__nocache_fix(pgdp))) {
- pmdp = (pmd_t *)__srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
+ pmdp = __srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
if (pmdp == NULL)
early_pgtable_allocfail("pmd");
memset(__nocache_fix(pmdp), 0, SRMMU_PMD_TABLE_SIZE);
@@ -715,7 +722,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long \
start, }
pmdp = pmd_offset(__nocache_fix(pgdp), start);
if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
- ptep = (pte_t *)__srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
+ ptep = __srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
if (ptep == NULL)
early_pgtable_allocfail("pte");
memset(__nocache_fix(ptep), 0, PTE_SIZE);
@@ -831,11 +838,11 @@ void __init srmmu_paging_init(void)
srmmu_nocache_calcsize();
srmmu_nocache_init();
- srmmu_inherit_prom_mappings(0xfe400000, (LINUX_OPPROM_ENDVM-PAGE_SIZE));
+ srmmu_inherit_prom_mappings(0xfe400000, (LINUX_OPPROM_ENDVM - PAGE_SIZE));
map_kernel();
/* ctx table has to be physically aligned to its size */
- srmmu_context_table = (ctxd_t *)__srmmu_get_nocache(num_contexts*sizeof(ctxd_t), \
num_contexts*sizeof(ctxd_t)); + srmmu_context_table = \
__srmmu_get_nocache(num_contexts * sizeof(ctxd_t), num_contexts * sizeof(ctxd_t)); \
srmmu_ctx_table_phys = (ctxd_t *)__nocache_pa((unsigned long)srmmu_context_table);
for (i = 0; i < num_contexts; i++)
--
1.6.0.6
--
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