mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
MIPS: Loongson: Remove pointless sample_lock from oprofile code.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
parent
36946d7387
commit
f1d39e6ed7
1 changed files with 0 additions and 7 deletions
|
@ -47,8 +47,6 @@ static struct loongson2_register_config {
|
|||
int cnt1_enabled, cnt2_enabled;
|
||||
} reg;
|
||||
|
||||
static DEFINE_SPINLOCK(sample_lock);
|
||||
|
||||
static char *oprofid = "LoongsonPerf";
|
||||
static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id);
|
||||
/* Compute all of the registers in preparation for enabling profiling. */
|
||||
|
@ -115,7 +113,6 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
|
|||
uint64_t counter, counter1, counter2;
|
||||
struct pt_regs *regs = get_irq_regs();
|
||||
int enabled;
|
||||
unsigned long flags;
|
||||
|
||||
/*
|
||||
* LOONGSON2 defines two 32-bit performance counters.
|
||||
|
@ -136,8 +133,6 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
|
|||
counter1 = counter & 0xffffffff;
|
||||
counter2 = counter >> 32;
|
||||
|
||||
spin_lock_irqsave(&sample_lock, flags);
|
||||
|
||||
if (counter1 & LOONGSON2_PERFCNT_OVERFLOW) {
|
||||
if (reg.cnt1_enabled)
|
||||
oprofile_add_sample(regs, 0);
|
||||
|
@ -149,8 +144,6 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
|
|||
counter2 = reg.reset_counter2;
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&sample_lock, flags);
|
||||
|
||||
write_c0_perfcnt((counter2 << 32) | counter1);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
|
|
Loading…
Reference in a new issue