diff options
| author | Pavankumar Kondeti <pkondeti@codeaurora.org> | 2017-04-13 18:44:24 +0530 |
|---|---|---|
| committer | Pavankumar Kondeti <pkondeti@codeaurora.org> | 2017-04-14 07:09:53 +0530 |
| commit | a76d9370e877f0814eccd2962dc18716fd34a86a (patch) | |
| tree | dcff0c3b8af9cd297ea62c127b90e43a132883e2 /kernel/sched | |
| parent | 16c1669252515ff1dd4cac51bdf0934bf7f8cdc8 (diff) | |
core_ctl: Take state_lock while preparing the global_state
global_state file output is prepared by reading the members of CPU
and cluster data structures. These members are updated under state_lock,
so acquire the same lock while preparing the output.
Change-Id: I8cb3ca6f9100a24f0bc9b293d364ad6aa8aabefb
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core_ctl.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/core_ctl.c b/kernel/sched/core_ctl.c index 1dde338d30f2..fd7290a5e2a1 100644 --- a/kernel/sched/core_ctl.c +++ b/kernel/sched/core_ctl.c @@ -260,6 +260,7 @@ static ssize_t show_global_state(const struct cluster_data *state, char *buf) ssize_t count = 0; unsigned int cpu; + spin_lock_irq(&state_lock); for_each_possible_cpu(cpu) { c = &per_cpu(cpu_state, cpu); cluster = c->cluster; @@ -295,6 +296,7 @@ static ssize_t show_global_state(const struct cluster_data *state, char *buf) count += snprintf(buf + count, PAGE_SIZE - count, "\tBoost: %u\n", (unsigned int) cluster->boost); } + spin_unlock_irq(&state_lock); return count; } |