From: Anton Blanchard <anton@samba.org>
Date: Mon, 26 Apr 2010 15:32:40 +0000 (+0000)
Subject: powerpc/cpumask: Convert /proc/cpuinfo to new cpumask API
X-Git-Tag: v2.6.35-rc1~450^2~37
X-Git-Url: https://bbs.cooldavid.org/git/?a=commitdiff_plain;h=e6532c63cc3dbefc79936fc9c9c68a151004fe46;p=net-next-2.6.git

powerpc/cpumask: Convert /proc/cpuinfo to new cpumask API

Use new cpumask API in /proc/cpuinfo code.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 58699a43eaa..8dcec47a7b3 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -200,11 +200,6 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	unsigned short maj;
 	unsigned short min;
 
-	if (cpu_id == NR_CPUS) {
-		show_cpuinfo_summary(m);
-		return 0;
-	}
-
 	/* We only show online cpus: disable preempt (overzealous, I
 	 * knew) to prevent cpu going down. */
 	preempt_disable();
@@ -312,19 +307,28 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 #endif
 
 	preempt_enable();
+
+	/* If this is the last cpu, print the summary */
+	if (cpumask_next(cpu_id, cpu_online_mask) >= nr_cpu_ids)
+		show_cpuinfo_summary(m);
+
 	return 0;
 }
 
 static void *c_start(struct seq_file *m, loff_t *pos)
 {
-	unsigned long i = *pos;
-
-	return i <= NR_CPUS ? (void *)(i + 1) : NULL;
+	if (*pos == 0)	/* just in case, cpu 0 is not the first */
+		*pos = cpumask_first(cpu_online_mask);
+	else
+		*pos = cpumask_next(*pos - 1, cpu_online_mask);
+	if ((*pos) < nr_cpu_ids)
+		return (void *)(unsigned long)(*pos + 1);
+	return NULL;
 }
 
 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 {
-	++*pos;
+	(*pos)++;
 	return c_start(m, pos);
 }