diff options
Diffstat (limited to 'packages/linux/linux-2.6.18/avr32-oprofile.patch')
| -rw-r--r-- | packages/linux/linux-2.6.18/avr32-oprofile.patch | 610 |
1 files changed, 0 insertions, 610 deletions
diff --git a/packages/linux/linux-2.6.18/avr32-oprofile.patch b/packages/linux/linux-2.6.18/avr32-oprofile.patch deleted file mode 100644 index 5fbc9855aa..0000000000 --- a/packages/linux/linux-2.6.18/avr32-oprofile.patch +++ /dev/null @@ -1,610 +0,0 @@ -From nobody Mon Sep 17 00:00:00 2001 -From: Haavard Skinnemoen <hskinnemoen@atmel.com> -Date: Wed Jan 4 17:26:23 2006 +0100 -Subject: [PATCH] AVR32 oprofile implementation - -This adds support for oprofile on the AVR32 architecture. ---- - - arch/avr32/Kconfig | 2 - arch/avr32/Makefile | 1 - arch/avr32/oprofile/Kconfig | 23 +++ - arch/avr32/oprofile/Makefile | 10 + - arch/avr32/oprofile/common.c | 169 +++++++++++++++++++++++++++ - arch/avr32/oprofile/init.c | 29 ++++ - arch/avr32/oprofile/op_avr32_model.h | 25 +++ - arch/avr32/oprofile/op_counter.h | 29 ++++ - arch/avr32/oprofile/op_model_avr32.c | 219 +++++++++++++++++++++++++++++++++++ - arch/avr32/oprofile/op_model_avr32.h | 21 +++ - 10 files changed, 528 insertions(+) - -Index: linux-2.6.18-avr32/arch/avr32/oprofile/Kconfig -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.18-avr32/arch/avr32/oprofile/Kconfig 2006-10-20 14:08:20.000000000 +0200 -@@ -0,0 +1,23 @@ -+ -+menu "Profiling support" -+ depends on EXPERIMENTAL -+ -+config PROFILING -+ bool "Profiling support (EXPERIMENTAL)" -+ help -+ Say Y here to enable the extended profiling support mechanisms used -+ by profilers such as OProfile. -+ -+ -+config OPROFILE -+ tristate "OProfile system profiling (EXPERIMENTAL)" -+ depends on PROFILING -+ help -+ OProfile is a profiling system capable of profiling the -+ whole system, including the kernel, kernel modules, libraries, -+ and applications. -+ -+ If unsure, say N. -+ -+endmenu -+ -Index: linux-2.6.18-avr32/arch/avr32/oprofile/Makefile -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.18-avr32/arch/avr32/oprofile/Makefile 2006-10-20 14:08:20.000000000 +0200 -@@ -0,0 +1,10 @@ -+obj-$(CONFIG_OPROFILE) += oprofile.o -+ -+DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \ -+ oprof.o cpu_buffer.o buffer_sync.o \ -+ event_buffer.o oprofile_files.o \ -+ oprofilefs.o oprofile_stats.o \ -+ timer_int.o ) -+ -+oprofile-y := $(DRIVER_OBJS) init.o common.o -+oprofile-y += op_model_avr32.o -Index: linux-2.6.18-avr32/arch/avr32/oprofile/common.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.18-avr32/arch/avr32/oprofile/common.c 2006-10-20 14:08:20.000000000 +0200 -@@ -0,0 +1,169 @@ -+/* -+ * Copyright (C) 2005-2006 Atmel Corporation -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ * -+ * Author: Ronny Pedersen -+ */ -+ -+#define DEBUG -+#include <linux/init.h> -+#include <linux/oprofile.h> -+#include <linux/errno.h> -+#include <asm/semaphore.h> -+#include <linux/sysdev.h> -+ -+#include "op_avr32_model.h" -+#include "op_counter.h" -+ -+static struct op_avr32_model_spec *pc_model; -+static int pc_enabled = 0; -+static struct semaphore pc_sem; -+ -+ -+static int pc_start(void); -+static int pc_setup(void); -+static void pc_stop(void); -+static int pc_create_files(struct super_block *, struct dentry *); -+ -+ -+struct op_counter_config counter_config[OP_MAX_COUNTER]; -+ -+static int pc_suspend(struct sys_device *dev, u32 state) -+{ -+ if (pc_enabled) -+ pc_stop(); -+ return 0; -+} -+ -+static int pc_resume(struct sys_device *dev) -+{ -+ if (pc_enabled) -+ pc_start(); -+ return 0; -+} -+ -+static struct sysdev_class oprofile_sysclass = { -+ set_kset_name("oprofile"), -+ .resume = pc_resume, -+ .suspend = pc_suspend, -+}; -+ -+static struct sys_device device_oprofile = { -+ .id = 0, -+ .cls = &oprofile_sysclass, -+}; -+ -+static int __init init_driverfs(void) -+{ -+ int ret; -+ -+ if (!(ret = sysdev_class_register(&oprofile_sysclass))) -+ ret = sysdev_register(&device_oprofile); -+ -+ return ret; -+} -+ -+static void exit_driverfs(void) -+{ -+ sysdev_unregister(&device_oprofile); -+ sysdev_class_unregister(&oprofile_sysclass); -+} -+ -+static int pc_create_files(struct super_block *sb, struct dentry *root) -+{ -+ unsigned int i; -+ -+ pr_debug("AVR32 Peformance Counters: create files\n"); -+ for (i = 0; i < pc_model->num_counters; i++) { -+ struct dentry *dir; -+ char buf[2]; -+ -+ snprintf(buf, sizeof buf, "%d", i); -+ dir = oprofilefs_mkdir(sb, root, buf); -+ oprofilefs_create_ulong(sb, dir, "enabled", -+ &counter_config[i].enabled); -+ oprofilefs_create_ulong(sb, dir, "event", -+ &counter_config[i].event); -+ oprofilefs_create_ulong(sb, dir, "count", -+ &counter_config[i].count); -+ oprofilefs_create_ulong(sb, dir, "unit_mask", -+ &counter_config[i].unit_mask); -+ oprofilefs_create_ulong(sb, dir, "kernel", -+ &counter_config[i].kernel); -+ oprofilefs_create_ulong(sb, dir, "user", -+ &counter_config[i].user); -+ } -+ -+ return 0; -+} -+ -+static int pc_setup(void) -+{ -+ int ret; -+ -+ spin_lock(&oprofilefs_lock); -+ pr_debug("AVR32 Peformance Counters: setup\n"); -+ ret = pc_model->setup_ctrs(); -+ spin_unlock(&oprofilefs_lock); -+ return ret; -+} -+ -+static int pc_start(void) -+{ -+ int ret = -EBUSY; -+ -+ down(&pc_sem); -+ if (!pc_enabled) { -+ pr_debug("AVR32 Peformance Counters: start\n"); -+ ret = pc_model->start(); -+ pc_enabled = !ret; -+ } -+ up(&pc_sem); -+ return ret; -+} -+ -+static void pc_stop(void) -+{ -+ down(&pc_sem); -+ pr_debug("AVR32 Peformance Counters: stop\n"); -+ if (pc_enabled) -+ pc_model->stop(); -+ pc_enabled = 0; -+ up(&pc_sem); -+} -+ -+int __init pc_init(struct oprofile_operations *ops, -+ struct op_avr32_model_spec *spec) -+{ -+ init_MUTEX(&pc_sem); -+ -+ if ( spec->init ) -+ if (spec->init() < 0) -+ return -ENODEV; -+ -+ pc_model = spec; -+ init_driverfs(); -+ ops->create_files = pc_create_files; -+ ops->setup = pc_setup; -+ ops->shutdown = pc_stop; -+ ops->start = pc_start; -+ ops->stop = pc_stop; -+ ops->cpu_type = pc_model->name; -+ printk(KERN_INFO "oprofile: using %s Performance Counters\n", -+ spec->name); -+ pr_debug("AVR32 Peformance Counters: pc_init\n"); -+ -+ return 0; -+} -+ -+void pc_exit(void) -+{ -+ if (pc_model) { -+ pr_debug("AVR32 Peformance Counters: exit\n"); -+ exit_driverfs(); -+ pc_model = NULL; -+ } -+} -Index: linux-2.6.18-avr32/arch/avr32/oprofile/init.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.18-avr32/arch/avr32/oprofile/init.c 2006-10-20 14:08:20.000000000 +0200 -@@ -0,0 +1,29 @@ -+/* -+ * Copyright (C) 2005-2006 Atmel Corporation -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ * -+ * Author: Ronny Pedersen -+ */ -+ -+#include <linux/oprofile.h> -+#include <linux/init.h> -+#include <linux/errno.h> -+#include "op_avr32_model.h" -+#include "op_model_avr32.h" -+ -+int __init oprofile_arch_init(struct oprofile_operations *ops) -+{ -+ int ret = -ENODEV; -+ -+ ret = pc_init(ops, &op_avr32_spec); -+ -+ return ret; -+} -+ -+void oprofile_arch_exit(void) -+{ -+ pc_exit(); -+} -Index: linux-2.6.18-avr32/arch/avr32/oprofile/op_avr32_model.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.18-avr32/arch/avr32/oprofile/op_avr32_model.h 2006-10-20 14:08:20.000000000 +0200 -@@ -0,0 +1,25 @@ -+/* -+ * interface to AVR32 machine specific operations -+ * -+ * Copyright (C) 2005-2006 Atmel Corporation -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ * -+ * Author: Ronny Pedersen -+ */ -+ -+#ifndef OP_AVR32_MODEL_H -+#define OP_AVR32_MODEL_H -+ -+struct op_avr32_model_spec { -+ int (*init)(void); -+ unsigned int num_counters; -+ int (*setup_ctrs)(void); -+ int (*start)(void); -+ void (*stop)(void); -+ char *name; -+}; -+ -+#endif /* OP_AVR32_MODEL_H */ -Index: linux-2.6.18-avr32/arch/avr32/oprofile/op_counter.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.18-avr32/arch/avr32/oprofile/op_counter.h 2006-10-20 14:08:20.000000000 +0200 -@@ -0,0 +1,29 @@ -+/* -+ * Copyright (C) 2005-2006 Atmel Corporation -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ * -+ * Author: Ronny Pedersen -+ */ -+#ifndef OP_COUNTER_H -+#define OP_COUNTER_H -+ -+#define OP_MAX_COUNTER 3 -+ -+/* Per performance monitor configuration as set via -+ * oprofilefs. -+ */ -+struct op_counter_config { -+ unsigned long count; -+ unsigned long enabled; -+ unsigned long event; -+ unsigned long unit_mask; -+ unsigned long kernel; -+ unsigned long user; -+}; -+ -+extern struct op_counter_config counter_config[]; -+ -+#endif /* OP_COUNTER_H */ -Index: linux-2.6.18-avr32/arch/avr32/oprofile/op_model_avr32.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.18-avr32/arch/avr32/oprofile/op_model_avr32.c 2006-10-20 14:08:20.000000000 +0200 -@@ -0,0 +1,219 @@ -+/* -+ * AVR32 Performance Counter Driver -+ * -+ * Copyright (C) 2005-2006 Atmel Corporation -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ * -+ * Author: Ronny Pedersen -+ */ -+ -+#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 <asm/sysreg.h> -+ -+#include "op_counter.h" -+#include "op_avr32_model.h" -+ -+ -+#define PC_ENABLE 0x001 /* Enable counters */ -+#define PCNT_RESET 0x002 /* Reset event counters */ -+#define CCNT_RESET 0x004 /* Reset clock counter */ -+#define PC_RESET (CCNT_RESET | PCNT_RESET) -+#define PC_CNT64 0x008 /* Make CCNT count every 64th cycle */ -+ -+ -+#define EVT_UNUSED 0xFF -+ -+struct pc_counter { -+ volatile unsigned long ovf; -+ unsigned long reset_counter; -+}; -+ -+enum { PCCNT, PCNT0, PCNT1, MAX_COUNTERS }; -+ -+#define PCCNT_IE (1 << 4) -+#define PCNT0_IE (1 << 5) -+#define PCNT1_IE (1 << 6) -+ -+#define PCCNT_F (1 << 8) -+#define PCNT0_F (1 << 9) -+#define PCNT1_F (1 << 10) -+ -+#define AVR32_PC_IRQ 1 -+ -+static const u32 int_mask[MAX_COUNTERS] = { PCCNT_IE, PCNT0_IE, PCNT1_IE }; -+static const u32 ovf_mask[MAX_COUNTERS] = { PCCNT_F, PCNT0_F, PCNT1_F }; -+ -+static struct pc_counter results[MAX_COUNTERS]; -+ -+static void write_pccr(u32 val) -+{ -+ __builtin_mtsr(SYSREG_PCCR, val); -+} -+ -+static u32 read_pccr(void) -+{ -+ return __builtin_mfsr(SYSREG_PCCR); -+} -+ -+static u32 read_counter(int counter) -+{ -+ switch (counter) { -+ case PCCNT: -+ return __builtin_mfsr(SYSREG_PCCNT); -+ case PCNT0: -+ return __builtin_mfsr(SYSREG_PCNT0); -+ case PCNT1: -+ return __builtin_mfsr(SYSREG_PCNT0); -+ default: -+ return 0; -+ } -+} -+ -+ -+static void write_counter(int counter, u32 val) -+{ -+ switch (counter) { -+ case PCCNT: -+ __builtin_mtsr(SYSREG_PCCNT, val); -+ case PCNT0: -+ __builtin_mtsr(SYSREG_PCNT0, val); -+ case PCNT1: -+ __builtin_mtsr(SYSREG_PCNT0, val); -+ default: -+ break; -+ } -+} -+ -+static int avr32_setup_ctrs(void) -+{ -+ u32 pccr; -+ int i; -+ -+ for (i = PCCNT; i < MAX_COUNTERS; i++) { -+ if (counter_config[i].enabled) -+ continue; -+ -+ counter_config[i].event = EVT_UNUSED; -+ } -+ -+ pccr = ((counter_config[PCNT1].event << 18) -+ | (counter_config[PCNT0].event << 12)); -+ pr_debug("avr32_setup_ctrs: pccr: %#08x\n", pccr); -+ write_pccr(pccr); -+ -+ for (i = PCCNT; i < MAX_COUNTERS; i++) { -+ if (counter_config[i].event == EVT_UNUSED) { -+ counter_config[i].event = 0; -+ continue; -+ } -+ -+ results[i].reset_counter = counter_config[i].count; -+ write_counter(i, -(u32)counter_config[i].count); -+ pr_debug("avr32_setup_ctrs: counter%d %#08x from %#08lx\n", -+ i, read_counter(i), counter_config[i].count); -+ } -+ -+ return 0; -+} -+ -+static void inline check_ctrs(void) -+{ -+ int i; -+ u32 pccr = read_pccr(); -+ -+ /* Writeback clears overflow flag */ -+ write_pccr(pccr & ~PC_ENABLE); -+ -+ for (i = PCCNT; i < MAX_COUNTERS; i++) { -+ if (!(int_mask[i] & pccr)) -+ continue; -+ -+ if (pccr & ovf_mask[i]) -+ results[i].ovf++; -+ } -+} -+ -+ -+static irqreturn_t avr32_pc_interrupt(int irq, void *arg, -+ struct pt_regs *regs) -+{ -+ int i; -+ -+ check_ctrs(); -+ -+ for (i = PCCNT; i < MAX_COUNTERS; i++) { -+ if (!results[i].ovf) -+ continue; -+ -+ write_counter(i, -(u32)results[i].reset_counter); -+ oprofile_add_sample(regs, i); -+ results[i].ovf--; -+ } -+ -+ /* Enable Performance Counter */ -+ write_pccr(read_pccr() | PC_ENABLE); -+ -+ return IRQ_HANDLED; -+} -+ -+static void avr32_pc_stop(void) -+{ -+ write_pccr(read_pccr() & ~PC_ENABLE); -+ -+ free_irq(AVR32_PC_IRQ, results); -+} -+ -+static int avr32_pc_start(void) -+{ -+ int i, ret; -+ u32 pccr = read_pccr(); -+ -+ ret = request_irq(AVR32_PC_IRQ, avr32_pc_interrupt, SA_INTERRUPT, -+ "AVR32 Performance Counter", (void *)results); -+ -+ if (ret < 0) { -+ printk(KERN_ERR -+ "oprofile: unable to request IRQ%d for AVR32" -+ " Performance Counter\n", -+ AVR32_PC_IRQ); -+ return ret; -+ } -+ -+ /* Enable interrupts */ -+ for (i = PCCNT; i < MAX_COUNTERS; i++) { -+ if (counter_config[i].enabled) -+ pccr |= int_mask[i]; -+ } -+ -+ /* Disable scaler */ -+ pccr &= ~PC_CNT64; -+ -+ /* Enable Performance Counter */ -+ pccr |= PC_ENABLE; -+ -+ write_pccr(pccr); -+ pr_debug("avr32_pc_start: pc: %#08x\n", pccr); -+ return 0; -+} -+ -+ -+struct op_avr32_model_spec op_avr32_spec = { -+ .init = 0, -+ .setup_ctrs = avr32_setup_ctrs, -+ .start = avr32_pc_start, -+ .stop = avr32_pc_stop, -+ .num_counters = MAX_COUNTERS, -+ .name = "avr32", -+}; -+ -Index: linux-2.6.18-avr32/arch/avr32/oprofile/op_model_avr32.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.18-avr32/arch/avr32/oprofile/op_model_avr32.h 2006-10-20 14:08:20.000000000 +0200 -@@ -0,0 +1,21 @@ -+/** -+ * AVR32 Machine Specific Operations -+ * -+ * Copyright (C) 2005-2006 Atmel Corporation -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ * -+ * Author: Ronny Pedersen -+ */ -+#ifndef OP_MODEL_AVR32_H -+#define OP_MODEL_AVR32_H -+ -+extern struct op_avr32_model_spec op_avr32_spec; -+extern int pc_init(struct oprofile_operations *ops, -+ struct op_avr32_model_spec *spec); -+extern void pc_exit(void); -+ -+ -+#endif -Index: linux-2.6.18-avr32/arch/avr32/Kconfig -=================================================================== ---- linux-2.6.18-avr32.orig/arch/avr32/Kconfig 2006-10-20 14:04:43.000000000 +0200 -+++ linux-2.6.18-avr32/arch/avr32/Kconfig 2006-10-20 14:08:20.000000000 +0200 -@@ -190,6 +190,8 @@ source "drivers/Kconfig" - - source "fs/Kconfig" - -+source "arch/avr32/oprofile/Kconfig" -+ - source "arch/avr32/Kconfig.debug" - - source "security/Kconfig" -Index: linux-2.6.18-avr32/arch/avr32/Makefile -=================================================================== ---- linux-2.6.18-avr32.orig/arch/avr32/Makefile 2006-10-20 14:04:54.000000000 +0200 -+++ linux-2.6.18-avr32/arch/avr32/Makefile 2006-10-20 14:09:10.000000000 +0200 -@@ -30,6 +30,7 @@ core-$(CONFIG_BOARD_ATSTK1000) += arch/ - core-$(CONFIG_LOADER_U_BOOT) += arch/avr32/boot/u-boot/ - core-y += arch/avr32/kernel/ - core-y += arch/avr32/mm/ -+drivers-$(CONFIG_OPROFILE) += arch/avr32/oprofile/ - libs-y += arch/avr32/lib/ - - archincdir-$(CONFIG_PLATFORM_AT32AP) := arch-at32ap |