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authorJesse Keating <jkeating@redhat.com>2010-07-29 16:46:31 -0700
committerJesse Keating <jkeating@redhat.com>2010-07-29 16:46:31 -0700
commit7a32965a104c3363e8505fe566531fcf071cced7 (patch)
treee45cb84552b2b022f49047bbddd9d887753c35bc /linux-2.6-debug-vm-would-have-oomkilled.patch
parent64ba2e5ffde5f2418eb26c700cb0ab62b04e5013 (diff)
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Diffstat (limited to 'linux-2.6-debug-vm-would-have-oomkilled.patch')
-rw-r--r--linux-2.6-debug-vm-would-have-oomkilled.patch64
1 files changed, 64 insertions, 0 deletions
diff --git a/linux-2.6-debug-vm-would-have-oomkilled.patch b/linux-2.6-debug-vm-would-have-oomkilled.patch
new file mode 100644
index 000000000..dd8ba3f0a
--- /dev/null
+++ b/linux-2.6-debug-vm-would-have-oomkilled.patch
@@ -0,0 +1,64 @@
+From 03657519851cd180983db4bd0c38eaeed4aa2962 Mon Sep 17 00:00:00 2001
+From: Kyle McMartin <kyle@treachery.i.jkkm.org>
+Date: Mon, 11 Jan 2010 08:25:12 -0500
+Subject: linux-2.6-debug-vm-would-have-oomkilled.patch
+
+---
+ kernel/sysctl.c | 8 ++++++++
+ mm/oom_kill.c | 7 +++++++
+ 2 files changed, 15 insertions(+), 0 deletions(-)
+
+diff --git a/kernel/sysctl.c b/kernel/sysctl.c
+index 8a68b24..72a4ff1 100644
+--- a/kernel/sysctl.c
++++ b/kernel/sysctl.c
+@@ -71,6 +71,7 @@ extern int sysctl_overcommit_ratio;
+ extern int sysctl_panic_on_oom;
+ extern int sysctl_oom_kill_allocating_task;
+ extern int sysctl_oom_dump_tasks;
++extern int sysctl_would_have_oomkilled;
+ extern int max_threads;
+ extern int core_uses_pid;
+ extern int suid_dumpable;
+@@ -973,6 +974,13 @@ static struct ctl_table vm_table[] = {
+ .proc_handler = proc_dointvec,
+ },
+ {
++ .procname = "would_have_oomkilled",
++ .data = &sysctl_would_have_oomkilled,
++ .maxlen = sizeof(sysctl_would_have_oomkilled),
++ .mode = 0644,
++ .proc_handler = &proc_dointvec,
++ },
++ {
+ .procname = "overcommit_ratio",
+ .data = &sysctl_overcommit_ratio,
+ .maxlen = sizeof(sysctl_overcommit_ratio),
+diff --git a/mm/oom_kill.c b/mm/oom_kill.c
+index f52481b..a892f07 100644
+--- a/mm/oom_kill.c
++++ b/mm/oom_kill.c
+@@ -31,6 +31,7 @@
+ int sysctl_panic_on_oom;
+ int sysctl_oom_kill_allocating_task;
+ int sysctl_oom_dump_tasks;
++int sysctl_would_have_oomkilled;
+ static DEFINE_SPINLOCK(zone_scan_lock);
+ /* #define DEBUG */
+
+@@ -396,6 +397,12 @@ static void __oom_kill_task(struct task_struct *p, int verbose)
+ return;
+ }
+
++ if (sysctl_would_have_oomkilled == 1) {
++ printk(KERN_ERR "Would have killed process %d (%s). But continuing instead.\n",
++ task_pid_nr(p), p->comm);
++ return;
++ }
++
+ if (verbose)
+ printk(KERN_ERR "Killed process %d (%s) "
+ "vsz:%lukB, anon-rss:%lukB, file-rss:%lukB\n",
+--
+1.6.5.2
+