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| author | Mitsuhiro Tanino <mitsuhiro.tanino.gm@hitachi.com> | 2013-02-27 17:03:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-27 19:10:12 -0800 |
| commit | 0d0bf6674136eb861b37213160b16388cfc1926d (patch) | |
| tree | f2e7183c8cc43f055f119cc0f5543b87ddb43606 /kernel/kexec.c | |
| parent | 8a525f5e7a9f1e15e93c63fe179a5a4463dde4e1 (diff) | |
| download | lwn-0d0bf6674136eb861b37213160b16388cfc1926d.tar.gz lwn-0d0bf6674136eb861b37213160b16388cfc1926d.zip | |
kexec: export PG_hwpoison flag into vmcoreinfo
This patch exports a PG_hwpoison into vmcoreinfo when
CONFIG_MEMORY_FAILURE is defined. "makedumpfile" needs to read
information of memory, such as 'mem_section', 'zone', 'pageflags' from
vmcore.
We introduce a function into "makedumpfile" to exclude hwpoison page from
vmcore dump. In order to introduce this function, PG_hwpoison flag have
to export into vmcoreinfo.
Signed-off-by: Mitsuhiro Tanino <mitsuhiro.tanino.gm@hitachi.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Mitsuhiro Tanino <mitsuhiro.tanino.gm@hitachi.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kexec.c')
| -rw-r--r-- | kernel/kexec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index ea097ad7cc37..2348bd6ef2af 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1537,6 +1537,9 @@ static int __init crash_save_vmcoreinfo_init(void) VMCOREINFO_NUMBER(PG_private); VMCOREINFO_NUMBER(PG_swapcache); VMCOREINFO_NUMBER(PG_slab); +#ifdef CONFIG_MEMORY_FAILURE + VMCOREINFO_NUMBER(PG_hwpoison); +#endif VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE); arch_crash_save_vmcoreinfo(); |