From: Rusty Russell <rusty@rustcorp.com.au>
Date: Thu, 17 Dec 2009 17:43:08 +0000 (-0600)
Subject: cpumask: use cpu_online in kernel/perf_event.c
X-Git-Tag: v2.6.33-rc1~1^2~6
X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=commitdiff_plain;h=f6325e30ebd6fc870315b017a5d4a6ab15bf790b

cpumask: use cpu_online in kernel/perf_event.c

Also, we want to check against nr_cpu_ids, not num_possible_cpus().
The latter works, but the correct bounds check is < nr_cpu_ids.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
To: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 8ab8698..97d1a3d 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -1614,7 +1614,7 @@ static struct perf_event_context *find_get_context(pid_t pid, int cpu)
 		 * offline CPU and activate it when the CPU comes up, but
 		 * that's for later.
 		 */
-		if (!cpu_isset(cpu, cpu_online_map))
+		if (!cpu_online(cpu))
 			return ERR_PTR(-ENODEV);
 
 		cpuctx = &per_cpu(perf_cpu_context, cpu);