X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Foom_kill.c;h=41b4e362221d943ba1759d9de3d740222f067c98;hb=5c0e3066474b57c56ff0d88ca31d95bd14232fee;hp=b278b8d60eee4ac13bba50222c478901cff39a60;hpb=88d5a7bb75b5e8f600e79b16abaf008c7fdfd27d;p=linux-2.6

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index b278b8d60e..41b4e36222 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -17,6 +17,7 @@
 
 #include <linux/oom.h>
 #include <linux/mm.h>
+#include <linux/err.h>
 #include <linux/sched.h>
 #include <linux/swap.h>
 #include <linux/timex.h>
@@ -147,14 +148,16 @@ unsigned long badness(struct task_struct *p, unsigned long uptime)
 	 * Adjust the score by oomkilladj.
 	 */
 	if (p->oomkilladj) {
-		if (p->oomkilladj > 0)
+		if (p->oomkilladj > 0) {
+			if (!points)
+				points = 1;
 			points <<= p->oomkilladj;
-		else
+		} else
 			points >>= -(p->oomkilladj);
 	}
 
 #ifdef DEBUG
-	printk(KERN_DEBUG "OOMkill: task %d (%s) got %d points\n",
+	printk(KERN_DEBUG "OOMkill: task %d (%s) got %lu points\n",
 	p->pid, p->comm, points);
 #endif
 	return points;
@@ -174,12 +177,7 @@ static inline int constrained_alloc(struct zonelist *zonelist, gfp_t gfp_mask)
 {
 #ifdef CONFIG_NUMA
 	struct zone **z;
-	nodemask_t nodes;
-	int node;
-	/* node has memory ? */
-	for_each_online_node(node)
-		if (NODE_DATA(node)->node_present_pages)
-			node_set(node, nodes);
+	nodemask_t nodes = node_states[N_HIGH_MEMORY];
 
 	for (z = zonelist->zones; *z; z++)
 		if (cpuset_zone_allowed_softwall(*z, gfp_mask))
@@ -320,7 +318,7 @@ static int oom_kill_task(struct task_struct *p)
 	 * Don't kill the process if any threads are set to OOM_DISABLE
 	 */
 	do_each_thread(g, q) {
-		if (q->mm == mm && p->oomkilladj == OOM_DISABLE)
+		if (q->mm == mm && q->oomkilladj == OOM_DISABLE)
 			return 1;
 	} while_each_thread(g, q);
 
@@ -333,7 +331,7 @@ static int oom_kill_task(struct task_struct *p)
 	 */
 	do_each_thread(g, q) {
 		if (q->mm == mm && q->tgid != p->tgid)
-			force_sig(SIGKILL, p);
+			force_sig(SIGKILL, q);
 	} while_each_thread(g, q);
 
 	return 0;
@@ -395,6 +393,7 @@ void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order)
 	struct task_struct *p;
 	unsigned long points = 0;
 	unsigned long freed = 0;
+	int constraint;
 
 	blocking_notifier_call_chain(&oom_notify_list, 0, &freed);
 	if (freed > 0)
@@ -409,14 +408,18 @@ void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order)
 		show_mem();
 	}
 
-	cpuset_lock();
-	read_lock(&tasklist_lock);
+	if (sysctl_panic_on_oom == 2)
+		panic("out of memory. Compulsory panic_on_oom is selected.\n");
 
 	/*
 	 * Check if there were limitations on the allocation (only relevant for
 	 * NUMA) that may require different handling.
 	 */
-	switch (constrained_alloc(zonelist, gfp_mask)) {
+	constraint = constrained_alloc(zonelist, gfp_mask);
+	cpuset_lock();
+	read_lock(&tasklist_lock);
+
+	switch (constraint) {
 	case CONSTRAINT_MEMORY_POLICY:
 		oom_kill_process(current, points,
 				"No available memory (MPOL_BIND)");