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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-09-22 16:45:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:41 -0700 |
| commit | 2ef43ec772551e975a6ea7cf22b59c84955aadf9 (patch) | |
| tree | 9560c13bcc6deb3ee00a60f93730b248029e69bb /fs | |
| parent | d899bf7b55f503ba7d3d07ed27c3a37e270fa7db (diff) | |
| download | linux-3.10-2ef43ec772551e975a6ea7cf22b59c84955aadf9.tar.gz linux-3.10-2ef43ec772551e975a6ea7cf22b59c84955aadf9.tar.bz2 linux-3.10-2ef43ec772551e975a6ea7cf22b59c84955aadf9.zip | |
kcore: use usual list for kclist
This patchset is for /proc/kcore. With this,
- many per-arch hooks are removed.
- /proc/kcore will know really valid physical memory area.
- /proc/kcore will be aware of memory hotplug.
- /proc/kcore will be architecture independent i.e.
if an arch supports CONFIG_MMU, it can use /proc/kcore.
(if the arch uses usual memory layout.)
This patch:
/proc/kcore uses its own list handling codes. It's better to use
generic list codes.
No changes in logic. just clean up.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/kcore.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index 0cf8a24cf6c..f9327e51ce9 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -20,6 +20,7 @@ #include <linux/init.h> #include <asm/uaccess.h> #include <asm/io.h> +#include <linux/list.h> #define CORE_STR "CORE" @@ -57,7 +58,7 @@ struct memelfnote void *data; }; -static struct kcore_list *kclist; +static LIST_HEAD(kclist_head); static DEFINE_RWLOCK(kclist_lock); void @@ -67,8 +68,7 @@ kclist_add(struct kcore_list *new, void *addr, size_t size) new->size = size; write_lock(&kclist_lock); - new->next = kclist; - kclist = new; + list_add_tail(&new->list, &kclist_head); write_unlock(&kclist_lock); } @@ -80,7 +80,7 @@ static size_t get_kcore_size(int *nphdr, size_t *elf_buflen) *nphdr = 1; /* PT_NOTE */ size = 0; - for (m=kclist; m; m=m->next) { + list_for_each_entry(m, &kclist_head, list) { try = kc_vaddr_to_offset((size_t)m->addr + m->size); if (try > size) size = try; @@ -192,7 +192,7 @@ static void elf_kcore_store_hdr(char *bufp, int nphdr, int dataoff) nhdr->p_align = 0; /* setup ELF PT_LOAD program header for every area */ - for (m=kclist; m; m=m->next) { + list_for_each_entry(m, &kclist_head, list) { phdr = (struct elf_phdr *) bufp; bufp += sizeof(struct elf_phdr); offset += sizeof(struct elf_phdr); @@ -317,7 +317,7 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) struct kcore_list *m; read_lock(&kclist_lock); - for (m=kclist; m; m=m->next) { + list_for_each_entry(m, &kclist_head, list) { if (start >= m->addr && start < (m->addr+m->size)) break; } |