summaryrefslogtreecommitdiff
path: root/arch/arm/oprofile/op_model_xscale.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/oprofile/op_model_xscale.c')
-rw-r--r--arch/arm/oprofile/op_model_xscale.c35
1 files changed, 19 insertions, 16 deletions
diff --git a/arch/arm/oprofile/op_model_xscale.c b/arch/arm/oprofile/op_model_xscale.c
index 724ab9ce2526..1d34a02048bd 100644
--- a/arch/arm/oprofile/op_model_xscale.c
+++ b/arch/arm/oprofile/op_model_xscale.c
@@ -17,12 +17,14 @@
/* #define DEBUG */
#include <linux/types.h>
#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/sched.h>
#include <linux/oprofile.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/cputype.h>
+#include <asm/pmu.h>
#include "op_counter.h"
#include "op_arm_model.h"
@@ -33,17 +35,6 @@
#define PMU_RESET (CCNT_RESET | PMN_RESET)
#define PMU_CNT64 0x008 /* Make CCNT count every 64th cycle */
-/* TODO do runtime detection */
-#ifdef CONFIG_ARCH_IOP32X
-#define XSCALE_PMU_IRQ IRQ_IOP32X_CORE_PMU
-#endif
-#ifdef CONFIG_ARCH_IOP33X
-#define XSCALE_PMU_IRQ IRQ_IOP33X_CORE_PMU
-#endif
-#ifdef CONFIG_ARCH_PXA
-#define XSCALE_PMU_IRQ IRQ_PMU
-#endif
-
/*
* Different types of events that can be counted by the XScale PMU
* as used by Oprofile userspace. Here primarily for documentation
@@ -367,6 +358,8 @@ static irqreturn_t xscale_pmu_interrupt(int irq, void *arg)
return IRQ_HANDLED;
}
+static const struct pmu_irqs *pmu_irqs;
+
static void xscale_pmu_stop(void)
{
u32 pmnc = read_pmnc();
@@ -374,20 +367,30 @@ static void xscale_pmu_stop(void)
pmnc &= ~PMU_ENABLE;
write_pmnc(pmnc);
- free_irq(XSCALE_PMU_IRQ, results);
+ free_irq(pmu_irqs->irqs[0], results);
+ release_pmu(pmu_irqs);
+ pmu_irqs = NULL;
}
static int xscale_pmu_start(void)
{
int ret;
- u32 pmnc = read_pmnc();
+ u32 pmnc;
+
+ pmu_irqs = reserve_pmu();
+ if (IS_ERR(pmu_irqs))
+ return PTR_ERR(pmu_irqs);
+
+ pmnc = read_pmnc();
- ret = request_irq(XSCALE_PMU_IRQ, xscale_pmu_interrupt, IRQF_DISABLED,
- "XScale PMU", (void *)results);
+ ret = request_irq(pmu_irqs->irqs[0], xscale_pmu_interrupt,
+ IRQF_DISABLED, "XScale PMU", (void *)results);
if (ret < 0) {
printk(KERN_ERR "oprofile: unable to request IRQ%d for XScale PMU\n",
- XSCALE_PMU_IRQ);
+ pmu_irqs->irqs[0]);
+ release_pmu(pmu_irqs);
+ pmu_irqs = NULL;
return ret;
}