Commit 5d1fd5dc authored by Naoya Horiguchi's avatar Naoya Horiguchi Committed by Linus Torvalds

mm,hwpoison: introduce MF_MSG_UNSPLIT_THP

memory_failure() is supposed to call action_result() when it handles a
memory error event, but there's one missing case.  So let's add it.

I find that include/ras/ras_event.h has some other MF_MSG_* undefined, so
this patch also adds them.
Signed-off-by: default avatarNaoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: default avatarOscar Salvador <osalvador@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Aristeu Rozanski <aris@ruivo.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dmitry Yakunin <zeil@yandex-team.ru>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Oscar Salvador <osalvador@suse.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20200922135650.1634-13-osalvador@suse.deSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5a2ffca3
...@@ -3064,6 +3064,7 @@ enum mf_action_page_type { ...@@ -3064,6 +3064,7 @@ enum mf_action_page_type {
MF_MSG_BUDDY, MF_MSG_BUDDY,
MF_MSG_BUDDY_2ND, MF_MSG_BUDDY_2ND,
MF_MSG_DAX, MF_MSG_DAX,
MF_MSG_UNSPLIT_THP,
MF_MSG_UNKNOWN, MF_MSG_UNKNOWN,
}; };
......
...@@ -361,6 +361,7 @@ TRACE_EVENT(aer_event, ...@@ -361,6 +361,7 @@ TRACE_EVENT(aer_event,
EM ( MF_MSG_POISONED_HUGE, "huge page already hardware poisoned" ) \ EM ( MF_MSG_POISONED_HUGE, "huge page already hardware poisoned" ) \
EM ( MF_MSG_HUGE, "huge page" ) \ EM ( MF_MSG_HUGE, "huge page" ) \
EM ( MF_MSG_FREE_HUGE, "free huge page" ) \ EM ( MF_MSG_FREE_HUGE, "free huge page" ) \
EM ( MF_MSG_NON_PMD_HUGE, "non-pmd-sized huge page" ) \
EM ( MF_MSG_UNMAP_FAILED, "unmapping failed page" ) \ EM ( MF_MSG_UNMAP_FAILED, "unmapping failed page" ) \
EM ( MF_MSG_DIRTY_SWAPCACHE, "dirty swapcache page" ) \ EM ( MF_MSG_DIRTY_SWAPCACHE, "dirty swapcache page" ) \
EM ( MF_MSG_CLEAN_SWAPCACHE, "clean swapcache page" ) \ EM ( MF_MSG_CLEAN_SWAPCACHE, "clean swapcache page" ) \
...@@ -373,6 +374,8 @@ TRACE_EVENT(aer_event, ...@@ -373,6 +374,8 @@ TRACE_EVENT(aer_event,
EM ( MF_MSG_TRUNCATED_LRU, "already truncated LRU page" ) \ EM ( MF_MSG_TRUNCATED_LRU, "already truncated LRU page" ) \
EM ( MF_MSG_BUDDY, "free buddy page" ) \ EM ( MF_MSG_BUDDY, "free buddy page" ) \
EM ( MF_MSG_BUDDY_2ND, "free buddy page (2nd try)" ) \ EM ( MF_MSG_BUDDY_2ND, "free buddy page (2nd try)" ) \
EM ( MF_MSG_DAX, "dax page" ) \
EM ( MF_MSG_UNSPLIT_THP, "unsplit thp" ) \
EMe ( MF_MSG_UNKNOWN, "unknown page" ) EMe ( MF_MSG_UNKNOWN, "unknown page" )
/* /*
......
...@@ -582,6 +582,7 @@ static const char * const action_page_types[] = { ...@@ -582,6 +582,7 @@ static const char * const action_page_types[] = {
[MF_MSG_BUDDY] = "free buddy page", [MF_MSG_BUDDY] = "free buddy page",
[MF_MSG_BUDDY_2ND] = "free buddy page (2nd try)", [MF_MSG_BUDDY_2ND] = "free buddy page (2nd try)",
[MF_MSG_DAX] = "dax page", [MF_MSG_DAX] = "dax page",
[MF_MSG_UNSPLIT_THP] = "unsplit thp",
[MF_MSG_UNKNOWN] = "unknown page", [MF_MSG_UNKNOWN] = "unknown page",
}; };
...@@ -1370,8 +1371,10 @@ int memory_failure(unsigned long pfn, int flags) ...@@ -1370,8 +1371,10 @@ int memory_failure(unsigned long pfn, int flags)
} }
if (PageTransHuge(hpage)) { if (PageTransHuge(hpage)) {
if (try_to_split_thp_page(p, "Memory Failure") < 0) if (try_to_split_thp_page(p, "Memory Failure") < 0) {
action_result(pfn, MF_MSG_UNSPLIT_THP, MF_IGNORED);
return -EBUSY; return -EBUSY;
}
VM_BUG_ON_PAGE(!page_count(p), p); VM_BUG_ON_PAGE(!page_count(p), p);
} }
......
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