diff options
author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-09-23 03:45:45 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 18:39:41 +0400 |
commit | 9492587cf35d370db33ef4b38375dfb35a105b61 (patch) | |
tree | 59daaf91e847d3c5cd6f542626da75db5814b06d /fs | |
parent | a0614da88b67ffa3dbcc0d40b817e682c7c4a0ee (diff) | |
download | linux-9492587cf35d370db33ef4b38375dfb35a105b61.tar.xz |
kcore: register text area in generic way
Some 64bit arch has special segment for mapping kernel text. It should be
entried to /proc/kcore in addtion to direct-linear-map, vmalloc area.
This patch unifies KCORE_TEXT entry scattered under x86 and ia64.
I'm not familiar with other archs (mips has its own even after this patch)
but range of [_stext ..._end) is a valid area of text and it's not in
direct-map area, defining CONFIG_ARCH_PROC_KCORE_TEXT is only a necessary
thing to do.
Note: I left mips as it is now.
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 | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index e10d360110bd..fdde1cc78392 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -21,6 +21,7 @@ #include <asm/uaccess.h> #include <asm/io.h> #include <linux/list.h> +#include <asm/sections.h> #define CORE_STR "CORE" @@ -374,10 +375,26 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) static struct kcore_list kcore_vmalloc; +#ifdef CONFIG_ARCH_PROC_KCORE_TEXT +static struct kcore_list kcore_text; +/* + * If defined, special segment is used for mapping kernel text instead of + * direct-map area. We need to create special TEXT section. + */ +static void __init proc_kcore_text_init(void) +{ + kclist_add(&kcore_text, _stext, _end - _stext, KCORE_TEXT); +} +#else +static void __init proc_kcore_text_init(void) +{ +} +#endif + static int __init proc_kcore_init(void) { proc_root_kcore = proc_create("kcore", S_IRUSR, NULL, &proc_kcore_operations); - + proc_kcore_text_init(); kclist_add(&kcore_vmalloc, (void *)VMALLOC_START, VMALLOC_END - VMALLOC_START, KCORE_VMALLOC); return 0; |