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-rw-r--r--Documentation/filesystems/proc.txt15
1 files changed, 5 insertions, 10 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index fad18f9456e4..ffead13f9443 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -1167,13 +1167,11 @@ CHAPTER 3: PER-PROCESS PARAMETERS
11673.1 /proc/<pid>/oom_adj - Adjust the oom-killer score 11673.1 /proc/<pid>/oom_adj - Adjust the oom-killer score
1168------------------------------------------------------ 1168------------------------------------------------------
1169 1169
1170This file can be used to adjust the score used to select which processes should 1170This file can be used to adjust the score used to select which processes
1171be killed in an out-of-memory situation. The oom_adj value is a characteristic 1171should be killed in an out-of-memory situation. Giving it a high score will
1172of the task's mm, so all threads that share an mm with pid will have the same 1172increase the likelihood of this process being killed by the oom-killer. Valid
1173oom_adj value. A high value will increase the likelihood of this process being 1173values are in the range -16 to +15, plus the special value -17, which disables
1174killed by the oom-killer. Valid values are in the range -16 to +15 as 1174oom-killing altogether for this process.
1175explained below and a special value of -17, which disables oom-killing
1176altogether for threads sharing pid's mm.
1177 1175
1178The process to be killed in an out-of-memory situation is selected among all others 1176The process to be killed in an out-of-memory situation is selected among all others
1179based on its badness score. This value equals the original memory size of the process 1177based on its badness score. This value equals the original memory size of the process
@@ -1187,9 +1185,6 @@ the parent's score if they do not share the same memory. Thus forking servers
1187are the prime candidates to be killed. Having only one 'hungry' child will make 1185are the prime candidates to be killed. Having only one 'hungry' child will make
1188parent less preferable than the child. 1186parent less preferable than the child.
1189 1187
1190/proc/<pid>/oom_adj cannot be changed for kthreads since they are immune from
1191oom-killing already.
1192
1193/proc/<pid>/oom_score shows process' current badness score. 1188/proc/<pid>/oom_score shows process' current badness score.
1194 1189
1195The following heuristics are then applied: 1190The following heuristics are then applied: