diff options
Diffstat (limited to 'fs/pstore/ram_core.c')
| -rw-r--r-- | fs/pstore/ram_core.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index fff363bfd484..fe5305028c6e 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -396,6 +396,10 @@ void persistent_ram_zap(struct persistent_ram_zone *prz) persistent_ram_update_header_ecc(prz); } +#define MEM_TYPE_WCOMBINE 0 +#define MEM_TYPE_NONCACHED 1 +#define MEM_TYPE_NORMAL 2 + static void *persistent_ram_vmap(phys_addr_t start, size_t size, unsigned int memtype) { @@ -409,10 +413,20 @@ static void *persistent_ram_vmap(phys_addr_t start, size_t size, page_start = start - offset_in_page(start); page_count = DIV_ROUND_UP(size + offset_in_page(start), PAGE_SIZE); - if (memtype) + switch (memtype) { + case MEM_TYPE_NORMAL: + prot = PAGE_KERNEL; + break; + case MEM_TYPE_NONCACHED: prot = pgprot_noncached(PAGE_KERNEL); - else + break; + case MEM_TYPE_WCOMBINE: prot = pgprot_writecombine(PAGE_KERNEL); + break; + default: + pr_err("invalid mem_type=%d\n", memtype); + return NULL; + } pages = kmalloc_array(page_count, sizeof(struct page *), GFP_KERNEL); if (!pages) { |