linux-kernel - [PATCH 6/14] cpumask: use cpu_online in kernel/perf

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <200911031456.59923.rusty@rustcorp.com.au>
Date:	Tue, 3 Nov 2009 14:56:59 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 6/14] 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@...tcorp.com.au>
To: Thomas Gleixner <tglx@...utronix.de>
---
 kernel/perf_event.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -1596,7 +1596,7 @@ static struct perf_event_context *find_g
 		if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
 			return ERR_PTR(-EACCES);
 
-		if (cpu < 0 || cpu > num_possible_cpus())
+		if (cpu < 0 || cpu >= nr_cpu_ids)
 			return ERR_PTR(-EINVAL);
 
 		/*
@@ -1604,7 +1604,7 @@ static struct perf_event_context *find_g
 		 * 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);

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/