mm tracing: tell mm_migrate_pages event about numa_misplaced

The mm_migrate_pages trace event reports a reason for the migration,
typically as a symbolic string.  The exception is the reason
MR_NUMA_MISPLACED for which it just displays the numeric value:
mm_migrate_pages: nr_succeeded=1 nr_failed=0 mode=MIGRATE_ASYNC
reason=0x5

This patch makes the output consistent by introducing a string value for
MR_NUMA_MISPLACED.  The event is then reported as: mm_migrate_pages:
nr_succeeded=1 nr_failed=0 mode=MIGRATE_ASYNC reason=numa_misplaced

Signed-off-by: Max Asbock <masbock@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/trace/events/migrate.h b/include/trace/events/migrate.h
index 4e4f2f8b1ac222a3673ddb316d30b21f7527c7bf..dd2b5467d905816e72c22026f109e971bbef8724 100644 (file)
--- a/include/trace/events/migrate.h
+++ b/include/trace/events/migrate.h
@@ -17,6 +17,7 @@
        {MR_MEMORY_HOTPLUG,     "memory_hotplug"},              \
        {MR_SYSCALL,            "syscall_or_cpuset"},           \
        {MR_MEMPOLICY_MBIND,    "mempolicy_mbind"},             \
+       {MR_NUMA_MISPLACED,     "numa_misplaced"},              \
        {MR_CMA,                "cma"}
 
 TRACE_EVENT(mm_migrate_pages,