diff options
Diffstat (limited to 'mm/oom_kill.c')
| -rw-r--r-- | mm/oom_kill.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 4194b9db010..beb592fe938 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -37,6 +37,7 @@ static DEFINE_SPINLOCK(zone_scan_mutex); * badness - calculate a numeric value for how bad this task has been * @p: task struct of which task we should calculate * @uptime: current uptime in seconds + * @mem: target memory controller * * The formula used is relatively simple and documented inline in the * function. The main rationale is that we want to select a good task @@ -264,6 +265,9 @@ static struct task_struct *select_bad_process(unsigned long *ppoints, } /** + * dump_tasks - dump current memory state of all system tasks + * @mem: target memory controller + * * Dumps the current memory state of all system tasks, excluding kernel threads. * State information includes task's pid, uid, tgid, vm size, rss, cpu, oom_adj * score, and name. @@ -298,7 +302,7 @@ static void dump_tasks(const struct mem_cgroup *mem) } while_each_thread(g, p); } -/** +/* * Send SIGKILL to the selected process irrespective of CAP_SYS_RAW_IO * flag though it's unlikely that we select a process with CAP_SYS_RAW_IO * set. @@ -412,14 +416,14 @@ 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 +#ifdef CONFIG_CGROUP_MEM_RES_CTLR 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(); + read_lock(&tasklist_lock); retry: p = select_bad_process(&points, mem); if (PTR_ERR(p) == -1UL) @@ -432,7 +436,7 @@ retry: "Memory cgroup out of memory")) goto retry; out: - rcu_read_unlock(); + read_unlock(&tasklist_lock); cgroup_unlock(); } #endif @@ -504,6 +508,9 @@ void clear_zonelist_oom(struct zonelist *zonelist) /** * out_of_memory - kill the "best" process when we run out of memory + * @zonelist: zonelist pointer + * @gfp_mask: memory allocation flags + * @order: amount of memory being requested as a power of 2 * * If we run out of memory, we have the choice between either * killing a random task (bad), letting the system crash (worse) |