---

yaml --- r: 351030 b: refs/heads/master c: 951fc5f h: refs/heads/master v: v3
git-mirror · Feb 1, 2013 · d5683cb · d5683cb
1 parent 12a0cbb
commit d5683cb
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Showing 4 changed files with 15 additions and 7 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5553f9e26f6f49a93ba732fd222eac6973a4cf35
+refs/heads/master: 951fc5f45836988c7df1d05c7f4658f331e7a920
diff --git a/trunk/Documentation/cpu-freq/cpu-drivers.txt b/trunk/Documentation/cpu-freq/cpu-drivers.txt
@@ -111,6 +111,12 @@ policy->governor		must contain the "default policy" for
 For setting some of these values, the frequency table helpers might be
 helpful. See the section 2 for more information on them.
 
+SMP systems normally have same clock source for a group of cpus. For these the
+.init() would be called only once for the first online cpu. Here the .init()
+routine must initialize policy->cpus with mask of all possible cpus (Online +
+Offline) that share the clock. Then the core would copy this mask onto
+policy->related_cpus and will reset policy->cpus to carry only online cpus.
+
 
 1.3 verify
 ------------

diff --git a/trunk/Documentation/cpu-freq/user-guide.txt b/trunk/Documentation/cpu-freq/user-guide.txt
@@ -190,11 +190,11 @@ scaling_max_freq		show the current "policy limits" (in
 				first set scaling_max_freq, then
 				scaling_min_freq.
 
-affected_cpus :			List of CPUs that require software coordination
-				of frequency.
+affected_cpus :			List of Online CPUs that require software
+				coordination of frequency.
 
-related_cpus :			List of CPUs that need some sort of frequency
-				coordination, whether software or hardware.
+related_cpus :			List of Online + Offline CPUs that need software
+				coordination of frequency.
 
 scaling_driver :		Hardware driver for cpufreq.
 

diff --git a/trunk/include/linux/cpufreq.h b/trunk/include/linux/cpufreq.h
@@ -89,8 +89,10 @@ struct cpufreq_real_policy {
 };
 
 struct cpufreq_policy {
-	cpumask_var_t		cpus;	/* CPUs requiring sw coordination */
-	cpumask_var_t		related_cpus; /* CPUs with any coordination */
+	/* CPUs sharing clock, require sw coordination */
+	cpumask_var_t		cpus;	/* Online CPUs only */
+	cpumask_var_t		related_cpus; /* Online + Offline CPUs */
+
 	unsigned int		shared_type; /* ANY or ALL affected CPUs
 						should set cpufreq */
 	unsigned int		cpu;    /* cpu nr of CPU managing this policy */