diff options
| author | Syed Rameez Mustafa <rameezmustafa@codeaurora.org> | 2016-11-01 18:13:36 -0700 |
|---|---|---|
| committer | Syed Rameez Mustafa <rameezmustafa@codeaurora.org> | 2016-11-07 14:46:21 -0800 |
| commit | 576259be4abfbd8f7bee476b48c3ce2eee05cfb4 (patch) | |
| tree | 8946d71e37fd74204274b423ef18514fe41e1921 /kernel/sched/core.c | |
| parent | ecd8f7800fc4aa3b62cfb01773d8e99d5bee228d (diff) | |
sched/hmp: Use GFP_KERNEL for top task memory allocations
Task load structure allocations can consume a lot of memory as the
number of tasks begin to increase. Also they might exhaust the atomic
memory pool pretty quickly if a workload starts spawning lots of
threads in a short amount of time thus increasing the possibility of
failed allocations. Move the call to init_new_task_load() outside
atomic context and start using GFP_KERNEL for allocations. There is
no need for this allocation to be in atomic context.
Change-Id: I357772e10bf8958804d9cd0c78eda27139054b21
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Diffstat (limited to 'kernel/sched/core.c')
| -rw-r--r-- | kernel/sched/core.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index f3b1688b3be7..6e39de2836ea 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2269,17 +2269,7 @@ void sched_exit(struct task_struct *p) reset_task_stats(p); p->ravg.mark_start = wallclock; p->ravg.sum_history[0] = EXITING_TASK_MARKER; - - kfree(p->ravg.curr_window_cpu); - kfree(p->ravg.prev_window_cpu); - - /* - * update_task_ravg() can be called for exiting tasks. While the - * function itself ensures correct behavior, the corresponding - * trace event requires that these pointers be NULL. - */ - p->ravg.curr_window_cpu = NULL; - p->ravg.prev_window_cpu = NULL; + free_task_load_ptrs(p); enqueue_task(rq, p, 0); clear_ed_task(p, rq); @@ -2384,10 +2374,12 @@ int sysctl_numa_balancing(struct ctl_table *table, int write, int sched_fork(unsigned long clone_flags, struct task_struct *p) { unsigned long flags; - int cpu = get_cpu(); + int cpu; - __sched_fork(clone_flags, p); init_new_task_load(p, false); + cpu = get_cpu(); + + __sched_fork(clone_flags, p); /* * We mark the process as running here. This guarantees that * nobody will actually run it, and a signal or other external |