diff options
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 57 |
1 files changed, 32 insertions, 25 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 81f56445fba9..39c9c4a2949f 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -2185,9 +2185,8 @@ SYSCALL_DEFINE3(getcpu, unsigned __user *, cpup, unsigned __user *, nodep, char poweroff_cmd[POWEROFF_CMD_PATH_LEN] = "/sbin/poweroff"; -static int __orderly_poweroff(void) +static int __orderly_poweroff(bool force) { - int argc; char **argv; static char *envp[] = { "HOME=/", @@ -2196,20 +2195,40 @@ static int __orderly_poweroff(void) }; int ret; - argv = argv_split(GFP_ATOMIC, poweroff_cmd, &argc); - if (argv == NULL) { + argv = argv_split(GFP_KERNEL, poweroff_cmd, NULL); + if (argv) { + ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC); + argv_free(argv); + } else { printk(KERN_WARNING "%s failed to allocate memory for \"%s\"\n", - __func__, poweroff_cmd); - return -ENOMEM; + __func__, poweroff_cmd); + ret = -ENOMEM; } - ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_WAIT_EXEC, - NULL, NULL, NULL); - argv_free(argv); + if (ret && force) { + printk(KERN_WARNING "Failed to start orderly shutdown: " + "forcing the issue\n"); + /* + * I guess this should try to kick off some daemon to sync and + * poweroff asap. Or not even bother syncing if we're doing an + * emergency shutdown? + */ + emergency_sync(); + kernel_power_off(); + } return ret; } +static bool poweroff_force; + +static void poweroff_work_func(struct work_struct *work) +{ + __orderly_poweroff(poweroff_force); +} + +static DECLARE_WORK(poweroff_work, poweroff_work_func); + /** * orderly_poweroff - Trigger an orderly system poweroff * @force: force poweroff if command execution fails @@ -2219,21 +2238,9 @@ static int __orderly_poweroff(void) */ int orderly_poweroff(bool force) { - int ret = __orderly_poweroff(); - - if (ret && force) { - printk(KERN_WARNING "Failed to start orderly shutdown: " - "forcing the issue\n"); - - /* - * I guess this should try to kick off some daemon to sync and - * poweroff asap. Or not even bother syncing if we're doing an - * emergency shutdown? - */ - emergency_sync(); - kernel_power_off(); - } - - return ret; + if (force) /* do not override the pending "true" */ + poweroff_force = true; + schedule_work(&poweroff_work); + return 0; } EXPORT_SYMBOL_GPL(orderly_poweroff); |