sched: print the sd->level in sched_domain_debug code

While printing out the visual representation of the sched-domains, print
the level (MC, SMT, CPU, NODE, ... ) of each of the sched_domains.

Credit: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched.c b/kernel/sched.c
index ef4e256..dc0be11 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6197,6 +6197,28 @@ void __init migration_init(void)
 
 #ifdef CONFIG_SCHED_DEBUG
 
+static inline const char *sd_level_to_string(enum sched_domain_level lvl)
+{
+       switch (lvl) {
+       case SD_LV_NONE:
+                       return "NONE";
+       case SD_LV_SIBLING:
+                       return "SIBLING";
+       case SD_LV_MC:
+                       return "MC";
+       case SD_LV_CPU:
+                       return "CPU";
+       case SD_LV_NODE:
+                       return "NODE";
+       case SD_LV_ALLNODES:
+                       return "ALLNODES";
+       case SD_LV_MAX:
+                       return "MAX";
+
+       }
+       return "MAX";
+}
+
 static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
                                  cpumask_t *groupmask)
 {
@@ -6216,7 +6238,8 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
                return -1;
        }
 
-       printk(KERN_CONT "span %s\n", str);
+       printk(KERN_CONT "span %s level %s\n",
+               str, sd_level_to_string(sd->level));
 
        if (!cpu_isset(cpu, sd->span)) {
                printk(KERN_ERR "ERROR: domain->span does not contain "