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| author | Arnd Bergmann <arnd@arndb.de> | 2010-09-11 18:24:46 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2010-10-16 22:43:08 +0200 |
| commit | fa0d4c26be9f989816b30626f6c67d9e7ef867f8 (patch) | |
| tree | 3085346ad864e05f876f4f774401a557778c8ff8 /arch/parisc/kernel/perf.c | |
| parent | 0890b5880df6a4989336add11f3a22122b26d9e1 (diff) | |
| download | blackbird-op-linux-fa0d4c26be9f989816b30626f6c67d9e7ef867f8.tar.gz blackbird-op-linux-fa0d4c26be9f989816b30626f6c67d9e7ef867f8.zip | |
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
Diffstat (limited to 'arch/parisc/kernel/perf.c')
| -rw-r--r-- | arch/parisc/kernel/perf.c | 4 |
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; } |
