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[ARM] oprofile: add ARM11 UP support

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Add oprofile glue for ARM11 (ARMv6) oprofile support.  This
connects the ARM11 core profiling support to the oprofile code
for uniprocessor configurations.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2006-12-19 12:41:22 +00:00 committed by Russell King
parent c265a762aa
commit 2d9e1ae06d
5 changed files with 84 additions and 0 deletions
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10
arch/arm/oprofile/Kconfig
View file

@ -19,8 +19,18 @@ config OPROFILE
If unsure, say N.
if OPROFILE
config OPROFILE_ARMV6
bool
depends on CPU_V6 && !SMP
default y
select OPROFILE_ARM11_CORE
config OPROFILE_ARM11_CORE
bool
endif
endmenu

1
arch/arm/oprofile/Makefile
View file

@ -9,3 +9,4 @@ DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \
oprofile-y := $(DRIVER_OBJS) common.o backtrace.o
oprofile-$(CONFIG_CPU_XSCALE) += op_model_xscale.o
oprofile-$(CONFIG_OPROFILE_ARM11_CORE) += op_model_arm11_core.o
oprofile-$(CONFIG_OPROFILE_ARMV6) += op_model_v6.o

4
arch/arm/oprofile/common.c
View file

@ -135,6 +135,10 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
spec = &op_xscale_spec;
#endif
#ifdef CONFIG_OPROFILE_ARMV6
spec = &op_armv6_spec;
#endif
if (spec) {
ret = spec->init();
if (ret < 0)

2
arch/arm/oprofile/op_arm_model.h
View file

@ -24,6 +24,8 @@ struct op_arm_model_spec {
extern struct op_arm_model_spec op_xscale_spec;
#endif
extern struct op_arm_model_spec op_armv6_spec;
extern void arm_backtrace(struct pt_regs * const regs, unsigned int depth);
extern int __init op_arm_init(struct oprofile_operations *ops, struct op_arm_model_spec *spec);

67
arch/arm/oprofile/op_model_v6.c Normal file
View file

@ -0,0 +1,67 @@
/**
* @file op_model_v6.c
* ARM11 Performance Monitor Driver
*
* Based on op_model_xscale.c
*
* @remark Copyright 2000-2004 Deepak Saxena <dsaxena@mvista.com>
* @remark Copyright 2000-2004 MontaVista Software Inc
* @remark Copyright 2004 Dave Jiang <dave.jiang@intel.com>
* @remark Copyright 2004 Intel Corporation
* @remark Copyright 2004 Zwane Mwaikambo <zwane@arm.linux.org.uk>
* @remark Copyright 2004 OProfile Authors
*
* @remark Read the file COPYING
*
* @author Tony Lindgren <tony@atomide.com>
*/
/* #define DEBUG */
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/oprofile.h>
#include <linux/interrupt.h>
#include <asm/irq.h>
#include <asm/system.h>
#include "op_counter.h"
#include "op_arm_model.h"
#include "op_model_arm11_core.h"
static int irqs[] = {
#ifdef CONFIG_ARCH_OMAP2
3,
#endif
};
static void armv6_pmu_stop(void)
{
arm11_stop_pmu();
arm11_release_interrupts(irqs, ARRAY_SIZE(irqs));
}
static int armv6_pmu_start(void)
{
int ret;
ret = arm11_request_interrupts(irqs, ARRAY_SIZE(irqs));
if (ret >= 0)
ret = arm11_start_pmu();
return ret;
}
static int armv6_detect_pmu(void)
{
return 0;
}
struct op_arm_model_spec op_armv6_spec = {
.init = armv6_detect_pmu,
.num_counters = 3,
.setup_ctrs = arm11_setup_pmu,
.start = armv6_pmu_start,
.stop = armv6_pmu_stop,
.name = "arm/armv6",
};