linux-kernel - [PATCH] sched: Print the sd->level in sched_domain

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Message-ID: <20080529152632.GB28006@in.ibm.com>
Date:	Thu, 29 May 2008 20:56:32 +0530
From:	Gautham R Shenoy <ego@...ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH] sched: Print the sd->level in sched_domain_debug code

sched: Print the sd->level in sched_domain_debug code

From: Gautham R Shenoy <ego@...ibm.com>

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@...llo.nl>
Signed-off-by: Gautham R Shenoy <ego@...ibm.com>
---

 kernel/sched.c |   25 ++++++++++++++++++++++++-
 1 files changed, 24 insertions(+), 1 deletions(-)


diff --git a/kernel/sched.c b/kernel/sched.c
index 1846451..7b81114 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6638,6 +6638,28 @@ 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)
 {
@@ -6657,7 +6679,8 @@ 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 "
-- 
Thanks and Regards
gautham
--
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