diff options
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/process.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/kernel/power/process.c b/kernel/power/process.c index cc2e55373b6..5ade1bdcf36 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -14,6 +14,7 @@ #include <linux/module.h> #include <linux/syscalls.h> #include <linux/freezer.h> +#include <linux/delay.h> /* * Timeout for stopping processes @@ -41,7 +42,7 @@ static int try_to_freeze_tasks(bool sig_only) do_gettimeofday(&start); end_time = jiffies + TIMEOUT; - do { + while (true) { todo = 0; read_lock(&tasklist_lock); do_each_thread(g, p) { @@ -62,10 +63,15 @@ static int try_to_freeze_tasks(bool sig_only) todo++; } while_each_thread(g, p); read_unlock(&tasklist_lock); - yield(); /* Yield is okay here */ - if (time_after(jiffies, end_time)) + if (!todo || time_after(jiffies, end_time)) break; - } while (todo); + + /* + * We need to retry, but first give the freezing tasks some + * time to enter the regrigerator. + */ + msleep(10); + } do_gettimeofday(&end); elapsed_csecs64 = timeval_to_ns(&end) - timeval_to_ns(&start); |