X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=kernel%2Fprofile.c;h=9bfadb248dd877b009e49710db79957f13188c5d;hb=90f30eccf41302a2542f5d374af243061902bd98;hp=fb5e03d57e9dac86b7aadb3b7c5496a467d5ba15;hpb=bef986502fa398b1785a3979b1aa17cd902d3527;p=firefly-linux-kernel-4.4.55.git

diff --git a/kernel/profile.c b/kernel/profile.c
index fb5e03d57e9d..9bfadb248dd8 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -40,7 +40,10 @@ int (*timer_hook)(struct pt_regs *) __read_mostly;
 
 static atomic_t *prof_buffer;
 static unsigned long prof_len, prof_shift;
+
 int prof_on __read_mostly;
+EXPORT_SYMBOL_GPL(prof_on);
+
 static cpumask_t prof_cpu_mask = CPU_MASK_ALL;
 #ifdef CONFIG_SMP
 static DEFINE_PER_CPU(struct profile_hit *[2], cpu_profile_hits);
@@ -52,6 +55,7 @@ static int __init profile_setup(char * str)
 {
 	static char __initdata schedstr[] = "schedule";
 	static char __initdata sleepstr[] = "sleep";
+	static char __initdata kvmstr[] = "kvm";
 	int par;
 
 	if (!strncmp(str, sleepstr, strlen(sleepstr))) {
@@ -63,7 +67,7 @@ static int __init profile_setup(char * str)
 		printk(KERN_INFO
 			"kernel sleep profiling enabled (shift: %ld)\n",
 			prof_shift);
-	} else if (!strncmp(str, sleepstr, strlen(sleepstr))) {
+	} else if (!strncmp(str, schedstr, strlen(schedstr))) {
 		prof_on = SCHED_PROFILING;
 		if (str[strlen(schedstr)] == ',')
 			str += strlen(schedstr) + 1;
@@ -72,6 +76,15 @@ static int __init profile_setup(char * str)
 		printk(KERN_INFO
 			"kernel schedule profiling enabled (shift: %ld)\n",
 			prof_shift);
+	} else if (!strncmp(str, kvmstr, strlen(kvmstr))) {
+		prof_on = KVM_PROFILING;
+		if (str[strlen(kvmstr)] == ',')
+			str += strlen(kvmstr) + 1;
+		if (get_option(&str, &par))
+			prof_shift = par;
+		printk(KERN_INFO
+			"kernel KVM profiling enabled (shift: %ld)\n",
+			prof_shift);
 	} else if (get_option(&str, &par)) {
 		prof_shift = par;
 		prof_on = CPU_PROFILING;
@@ -387,6 +400,8 @@ void profile_hits(int type, void *__pc, unsigned int nr_hits)
 }
 #endif /* !CONFIG_SMP */
 
+EXPORT_SYMBOL_GPL(profile_hits);
+
 void profile_tick(int type)
 {
 	struct pt_regs *regs = get_irq_regs();
@@ -434,7 +449,6 @@ void create_prof_cpu_mask(struct proc_dir_entry *root_irq_dir)
 	/* create /proc/irq/prof_cpu_mask */
 	if (!(entry = create_proc_entry("prof_cpu_mask", 0600, root_irq_dir)))
 		return;
-	entry->nlink = 1;
 	entry->data = (void *)&prof_cpu_mask;
 	entry->read_proc = prof_cpu_mask_read_proc;
 	entry->write_proc = prof_cpu_mask_write_proc;