mm: add speculative page fault vmstats
Add speculative_pgfault vmstat counter to count successful speculative page
fault handling.
Also fixing a minor typo in include/linux/vm_event_item.h.
Change-Id: I0d3f3dc5195e1156d4b8edf83aff9d8d85904e8e
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Patch-mainline: linux-mm @ Tue, 17 Apr 2018 16:33:29
[vinmenon@codeaurora.org: 4.9 porting conflicts]
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 8bd62ed..3d128da 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1088,7 +1088,10 @@
"vmacache_find_hits",
"vmacache_full_flushes",
#endif
-#endif /* CONFIG_VM_EVENTS_COUNTERS */
+#ifdef CONFIG_SPECULATIVE_PAGE_FAULT
+ "speculative_pgfault"
+#endif
+#endif /* CONFIG_VM_EVENT_COUNTERS */
};
#endif /* CONFIG_PROC_FS || CONFIG_SYSFS || CONFIG_NUMA */