summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorArnd Bergmann <arnd@arndb.de>2010-09-11 18:24:46 +0200
committerArnd Bergmann <arnd@arndb.de>2010-10-16 22:43:08 +0200
commitfa0d4c26be9f989816b30626f6c67d9e7ef867f8 (patch)
tree3085346ad864e05f876f4f774401a557778c8ff8
parent0890b5880df6a4989336add11f3a22122b26d9e1 (diff)
parisc: remove big kernel lock
The parisc version of the perf code is sufficiently protected by its own spinlock, no need to use the BKL. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: linux-parisc@vger.kernel.org
-rw-r--r--arch/parisc/kernel/perf.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index f9f6783e4bdd..ba0c053e25ae 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -46,7 +46,6 @@
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/miscdevice.h>
-#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
@@ -261,16 +260,13 @@ printk("Preparing to start counters\n");
*/
static int perf_open(struct inode *inode, struct file *file)
{
- lock_kernel();
spin_lock(&perf_lock);
if (perf_enabled) {
spin_unlock(&perf_lock);
- unlock_kernel();
return -EBUSY;
}
perf_enabled = 1;
spin_unlock(&perf_lock);
- unlock_kernel();
return 0;
}