Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fa0d4c26 authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

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: default avatarArnd 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
parent 0890b588

arch/parisc/kernel/perf.c

+0 −4
Original line number Diff line number Diff line
@@ -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;

}