diff options
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/kernel/perf.c | 4 | ||||
| -rw-r--r-- | arch/parisc/kernel/vmlinux.lds.S | 1 |
2 files changed, 4 insertions, 1 deletions
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c index 89d6d5ad44b..f696f57faa1 100644 --- a/arch/parisc/kernel/perf.c +++ b/arch/parisc/kernel/perf.c @@ -46,6 +46,7 @@ #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> @@ -260,13 +261,16 @@ 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; } diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index 2e516b87175..1a3b6ccd362 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -67,7 +67,6 @@ SECTIONS _etext = .; RODATA - BUG_TABLE /* writeable */ /* Make sure this is page aligned so |