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| author | Daniel Walker <dwalker@mvista.com> | 2008-01-30 15:31:17 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 15:31:17 +0300 |
| commit | 8c8b8859b64baf6d7c33900e8720c7bafe775b2c (patch) | |
| tree | 9c43ff6b227678460dc115bf0c2e2774d905f9e1 /arch/x86/kernel/cpu/mcheck/mce_64.c | |
| parent | fa20efd2fcd9349770113c6f72fc76ce437b62f5 (diff) | |
| download | linux-8c8b8859b64baf6d7c33900e8720c7bafe775b2c.tar.xz | |
mcheck mce_64: mce_read_sem to mutex
Converted to a mutex, and changed the name to mce_read_mutex.
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/cpu/mcheck/mce_64.c')
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce_64.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c index 0adad772d0da..8cd47fe2ef2c 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_64.c +++ b/arch/x86/kernel/cpu/mcheck/mce_64.c @@ -564,7 +564,7 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize, loff_t *off) { unsigned long *cpu_tsc; - static DECLARE_MUTEX(mce_read_sem); + static DEFINE_MUTEX(mce_read_mutex); unsigned next; char __user *buf = ubuf; int i, err; @@ -573,12 +573,12 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize, if (!cpu_tsc) return -ENOMEM; - down(&mce_read_sem); + mutex_lock(&mce_read_mutex); next = rcu_dereference(mcelog.next); /* Only supports full reads right now */ if (*off != 0 || usize < MCE_LOG_LEN*sizeof(struct mce)) { - up(&mce_read_sem); + mutex_unlock(&mce_read_mutex); kfree(cpu_tsc); return -EINVAL; } @@ -621,7 +621,7 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize, memset(&mcelog.entry[i], 0, sizeof(struct mce)); } } - up(&mce_read_sem); + mutex_unlock(&mce_read_mutex); kfree(cpu_tsc); return err ? -EFAULT : buf - ubuf; } |