From f1d39e6ed7ad71048db3b2835dccf3a5a01fab69 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Sat, 27 Feb 2010 12:53:39 +0100 Subject: MIPS: Loongson: Remove pointless sample_lock from oprofile code. Signed-off-by: Ralf Baechle --- arch/mips/oprofile/op_model_loongson2.c | 7 ------- 1 file changed, 7 deletions(-) (limited to 'arch/mips/oprofile/op_model_loongson2.c') diff --git a/arch/mips/oprofile/op_model_loongson2.c b/arch/mips/oprofile/op_model_loongson2.c index f7f9a32..29e2326 100644 --- a/arch/mips/oprofile/op_model_loongson2.c +++ b/arch/mips/oprofile/op_model_loongson2.c @@ -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; -- cgit v1.1