[PATCH] x86_64: Update defconfig

[pandora-kernel.git] / kernel / profile.c

diff --git a/kernel/profile.c b/kernel/profile.c
index 0221a50..f89248e 100644 (file)
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -35,11 +35,11 @@ struct profile_hit {
 #define NR_PROFILE_GRP         (NR_PROFILE_HIT/PROFILE_GRPSZ)
 
 /* Oprofile timer tick hook */
-int (*timer_hook)(struct pt_regs *);
+int (*timer_hook)(struct pt_regs *) __read_mostly;
 
 static atomic_t *prof_buffer;
 static unsigned long prof_len, prof_shift;
-static int prof_on;
+static int prof_on __read_mostly;
 static cpumask_t prof_cpu_mask = CPU_MASK_ALL;
 #ifdef CONFIG_SMP
 static DEFINE_PER_CPU(struct profile_hit *[2], cpu_profile_hits);
@@ -49,15 +49,19 @@ static DECLARE_MUTEX(profile_flip_mutex);
 
 static int __init profile_setup(char * str)
 {
+       static char __initdata schedstr[] = "schedule";
        int par;
 
-       if (!strncmp(str, "schedule", 8)) {
+       if (!strncmp(str, schedstr, strlen(schedstr))) {
                prof_on = SCHED_PROFILING;
-               printk(KERN_INFO "kernel schedule profiling enabled\n");
-               if (str[7] == ',')
-                       str += 8;
-       }
-       if (get_option(&str,&par)) {
+               if (str[strlen(schedstr)] == ',')
+                       str += strlen(schedstr) + 1;
+               if (get_option(&str, &par))
+                       prof_shift = par;
+               printk(KERN_INFO
+                       "kernel schedule profiling enabled (shift: %ld)\n",
+                       prof_shift);
+       } else if (get_option(&str, &par)) {
                prof_shift = par;
                prof_on = CPU_PROFILING;
                printk(KERN_INFO "kernel profiling enabled (shift: %ld)\n",