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>

1 files changed, 24 insertions, 1 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index ef4e25604bbe..dc0be113f41d 100644
--- 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 "