drm/radeon: only save UVD bo when we have open handles

[linux-imx.git] / kernel / reboot.c

diff --git a/kernel/reboot.c b/kernel/reboot.c
index 37d2636a65c2948d261695c63a769ba14c3334d4..269ed9384cc4284e9cf6043bd00667ea582c4369 100644 (file)
--- a/kernel/reboot.c
+++ b/kernel/reboot.c
@@ -4,6 +4,9 @@
  *  Copyright (C) 2013  Linus Torvalds
  */
 
+#define pr_fmt(fmt)    "reboot: " fmt
+
+#include <linux/ctype.h>
 #include <linux/export.h>
 #include <linux/kexec.h>
 #include <linux/kmod.h>
@@ -22,6 +25,18 @@ int C_A_D = 1;
 struct pid *cad_pid;
 EXPORT_SYMBOL(cad_pid);
 
+#if defined(CONFIG_ARM) || defined(CONFIG_UNICORE32)
+#define DEFAULT_REBOOT_MODE            = REBOOT_HARD
+#else
+#define DEFAULT_REBOOT_MODE
+#endif
+enum reboot_mode reboot_mode DEFAULT_REBOOT_MODE;
+
+int reboot_default;
+int reboot_cpu;
+enum reboot_type reboot_type = BOOT_ACPI;
+int reboot_force;
+
 /*
  * If set, this is used for preparing the system to power off.
  */
@@ -85,7 +100,7 @@ EXPORT_SYMBOL(unregister_reboot_notifier);
 static void migrate_to_reboot_cpu(void)
 {
        /* The boot cpu is always logical cpu 0 */
-       int cpu = 0;
+       int cpu = reboot_cpu;
 
        cpu_hotplug_disable();
 
@@ -114,9 +129,9 @@ void kernel_restart(char *cmd)
        migrate_to_reboot_cpu();
        syscore_shutdown();
        if (!cmd)
-               printk(KERN_EMERG "Restarting system.\n");
+               pr_emerg("Restarting system\n");
        else
-               printk(KERN_EMERG "Restarting system with command '%s'.\n", cmd);
+               pr_emerg("Restarting system with command '%s'\n", cmd);
        kmsg_dump(KMSG_DUMP_RESTART);
        machine_restart(cmd);
 }
@@ -125,7 +140,7 @@ EXPORT_SYMBOL_GPL(kernel_restart);
 static void kernel_shutdown_prepare(enum system_states state)
 {
        blocking_notifier_call_chain(&reboot_notifier_list,
-               (state == SYSTEM_HALT)?SYS_HALT:SYS_POWER_OFF, NULL);
+               (state == SYSTEM_HALT) ? SYS_HALT : SYS_POWER_OFF, NULL);
        system_state = state;
        usermodehelper_disable();
        device_shutdown();
@@ -140,11 +155,10 @@ void kernel_halt(void)
        kernel_shutdown_prepare(SYSTEM_HALT);
        migrate_to_reboot_cpu();
        syscore_shutdown();
-       printk(KERN_EMERG "System halted.\n");
+       pr_emerg("System halted\n");
        kmsg_dump(KMSG_DUMP_HALT);
        machine_halt();
 }
-
 EXPORT_SYMBOL_GPL(kernel_halt);
 
 /**
@@ -159,7 +173,7 @@ void kernel_power_off(void)
                pm_power_off_prepare();
        migrate_to_reboot_cpu();
        syscore_shutdown();
-       printk(KERN_EMERG "Power down.\n");
+       pr_emerg("Power down\n");
        kmsg_dump(KMSG_DUMP_POWEROFF);
        machine_power_off();
 }
@@ -188,10 +202,10 @@ SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd,
 
        /* For safety, we require "magic" arguments. */
        if (magic1 != LINUX_REBOOT_MAGIC1 ||
-           (magic2 != LINUX_REBOOT_MAGIC2 &&
-                       magic2 != LINUX_REBOOT_MAGIC2A &&
+                       (magic2 != LINUX_REBOOT_MAGIC2 &&
+                       magic2 != LINUX_REBOOT_MAGIC2A &&
                        magic2 != LINUX_REBOOT_MAGIC2B &&
-                       magic2 != LINUX_REBOOT_MAGIC2C))
+                       magic2 != LINUX_REBOOT_MAGIC2C))
                return -EINVAL;
 
        /*
@@ -234,7 +248,8 @@ SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd,
                break;
 
        case LINUX_REBOOT_CMD_RESTART2:
-               if (strncpy_from_user(&buffer[0], arg, sizeof(buffer) - 1) < 0) {
+               ret = strncpy_from_user(&buffer[0], arg, sizeof(buffer) - 1);
+               if (ret < 0) {
                        ret = -EFAULT;
                        break;
                }
@@ -300,14 +315,11 @@ static int __orderly_poweroff(bool force)
                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);
                ret = -ENOMEM;
        }
 
        if (ret && force) {
-               printk(KERN_WARNING "Failed to start orderly shutdown: "
-                                       "forcing the issue\n");
+               pr_warn("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
@@ -344,3 +356,64 @@ int orderly_poweroff(bool force)
        return 0;
 }
 EXPORT_SYMBOL_GPL(orderly_poweroff);
+
+static int __init reboot_setup(char *str)
+{
+       for (;;) {
+               /*
+                * Having anything passed on the command line via
+                * reboot= will cause us to disable DMI checking
+                * below.
+                */
+               reboot_default = 0;
+
+               switch (*str) {
+               case 'w':
+                       reboot_mode = REBOOT_WARM;
+                       break;
+
+               case 'c':
+                       reboot_mode = REBOOT_COLD;
+                       break;
+
+               case 'h':
+                       reboot_mode = REBOOT_HARD;
+                       break;
+
+               case 's':
+                       if (isdigit(*(str+1)))
+                               reboot_cpu = simple_strtoul(str+1, NULL, 0);
+                       else if (str[1] == 'm' && str[2] == 'p' &&
+                                                       isdigit(*(str+3)))
+                               reboot_cpu = simple_strtoul(str+3, NULL, 0);
+                       else
+                               reboot_mode = REBOOT_SOFT;
+                       break;
+
+               case 'g':
+                       reboot_mode = REBOOT_GPIO;
+                       break;
+
+               case 'b':
+               case 'a':
+               case 'k':
+               case 't':
+               case 'e':
+               case 'p':
+                       reboot_type = *str;
+                       break;
+
+               case 'f':
+                       reboot_force = 1;
+                       break;
+               }
+
+               str = strchr(str, ',');
+               if (str)
+                       str++;
+               else
+                       break;
+       }
+       return 1;
+}
+__setup("reboot=", reboot_setup);