diff options
Diffstat (limited to 'mm/oom_kill.c')
| -rw-r--r-- | mm/oom_kill.c | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index c1850bf..64751dc 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -25,6 +25,7 @@ #include <linux/cpuset.h> #include <linux/module.h> #include <linux/notifier.h> +#include <linux/memcontrol.h> int sysctl_panic_on_oom; int sysctl_oom_kill_allocating_task; @@ -50,7 +51,8 @@ static DEFINE_SPINLOCK(zone_scan_mutex); * of least surprise ... (be careful when you change it) */ -unsigned long badness(struct task_struct *p, unsigned long uptime) +unsigned long badness(struct task_struct *p, unsigned long uptime, + struct mem_cgroup *mem) { unsigned long points, cpu_time, run_time, s; struct mm_struct *mm; @@ -63,6 +65,13 @@ unsigned long badness(struct task_struct *p, unsigned long uptime) return 0; } +#ifdef CONFIG_CGROUP_MEM_CONT + if (mem != NULL && mm->mem_cgroup != mem) { + task_unlock(p); + return 0; + } +#endif + /* * The memory size of the process is the basis for the badness. */ @@ -193,7 +202,8 @@ static inline enum oom_constraint constrained_alloc(struct zonelist *zonelist, * * (not docbooked, we don't want this one cluttering up the manual) */ -static struct task_struct *select_bad_process(unsigned long *ppoints) +static struct task_struct *select_bad_process(unsigned long *ppoints, + struct mem_cgroup *mem) { struct task_struct *g, *p; struct task_struct *chosen = NULL; @@ -247,7 +257,7 @@ static struct task_struct *select_bad_process(unsigned long *ppoints) if (p->oomkilladj == OOM_DISABLE) continue; - points = badness(p, uptime.tv_sec); + points = badness(p, uptime.tv_sec, mem); if (points > *ppoints || !chosen) { chosen = p; *ppoints = points; @@ -368,6 +378,31 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, return oom_kill_task(p); } +#ifdef CONFIG_CGROUP_MEM_CONT +void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask) +{ + unsigned long points = 0; + struct task_struct *p; + + cgroup_lock(); + rcu_read_lock(); +retry: + p = select_bad_process(&points, mem); + if (PTR_ERR(p) == -1UL) + goto out; + + if (!p) + p = current; + + if (oom_kill_process(p, gfp_mask, 0, points, + "Memory cgroup out of memory")) + goto retry; +out: + rcu_read_unlock(); + cgroup_unlock(); +} +#endif + static BLOCKING_NOTIFIER_HEAD(oom_notify_list); int register_oom_notifier(struct notifier_block *nb) @@ -484,7 +519,7 @@ retry: * Rambo mode: Shoot down a process and hope it solves whatever * issues we may have. */ - p = select_bad_process(&points); + p = select_bad_process(&points, NULL); if (PTR_ERR(p) == -1UL) goto out; |