X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;ds=sidebyside;f=kernel%2Fpower%2Fmain.c;h=873228c71dabdf700abcf2e6c19dcb3cc96315b7;hb=3aef83e0ef1ffb8ea3bea97be46821a45c952173;hp=0a907f0dc56b3bc0f67e189ded38f64e8ad94ebb;hpb=d636b2798732f2cfba48d94aa19b7ba206268a83;p=powerpc.git

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 0a907f0dc5..873228c71d 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -15,7 +15,9 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/pm.h>
-
+#include <linux/console.h>
+#include <linux/cpu.h>
+#include <linux/resume-trace.h>
 
 #include "power.h"
 
@@ -51,7 +53,7 @@ void pm_set_ops(struct pm_ops * ops)
 
 static int suspend_prepare(suspend_state_t state)
 {
-	int error = 0;
+	int error;
 	unsigned int free_pages;
 
 	if (!pm_ops || !pm_ops->enter)
@@ -59,12 +61,9 @@ static int suspend_prepare(suspend_state_t state)
 
 	pm_prepare_console();
 
-	disable_nonboot_cpus();
-
-	if (num_online_cpus() != 1) {
-		error = -EPERM;
+	error = disable_nonboot_cpus();
+	if (error)
 		goto Enable_cpu;
-	}
 
 	if (freeze_processes()) {
 		error = -EAGAIN;
@@ -145,7 +144,7 @@ static void suspend_finish(suspend_state_t state)
 
 
 
-static char *pm_states[PM_SUSPEND_MAX] = {
+static const char * const pm_states[PM_SUSPEND_MAX] = {
 	[PM_SUSPEND_STANDBY]	= "standby",
 	[PM_SUSPEND_MEM]	= "mem",
 #ifdef CONFIG_SOFTWARE_SUSPEND
@@ -262,7 +261,7 @@ static ssize_t state_show(struct subsystem * subsys, char * buf)
 static ssize_t state_store(struct subsystem * subsys, const char * buf, size_t n)
 {
 	suspend_state_t state = PM_SUSPEND_STANDBY;
-	char ** s;
+	const char * const *s;
 	char *p;
 	int error;
 	int len;
@@ -283,10 +282,39 @@ static ssize_t state_store(struct subsystem * subsys, const char * buf, size_t n
 
 power_attr(state);
 
+#ifdef CONFIG_PM_TRACE
+int pm_trace_enabled;
+
+static ssize_t pm_trace_show(struct subsystem * subsys, char * buf)
+{
+	return sprintf(buf, "%d\n", pm_trace_enabled);
+}
+
+static ssize_t
+pm_trace_store(struct subsystem * subsys, const char * buf, size_t n)
+{
+	int val;
+
+	if (sscanf(buf, "%d", &val) == 1) {
+		pm_trace_enabled = !!val;
+		return n;
+	}
+	return -EINVAL;
+}
+
+power_attr(pm_trace);
+
+static struct attribute * g[] = {
+	&state_attr.attr,
+	&pm_trace_attr.attr,
+	NULL,
+};
+#else
 static struct attribute * g[] = {
 	&state_attr.attr,
 	NULL,
 };
+#endif /* CONFIG_PM_TRACE */
 
 static struct attribute_group attr_group = {
 	.attrs = g,