1 files changed, 106 insertions, 0 deletions

diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c
new file mode 100644
index 000000000000..ab65ce3d471a
--- /dev/null
+++ b/arch/mips/oprofile/common.c
@@ -0,0 +1,106 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2004 by Ralf Baechle
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/oprofile.h>
+#include <linux/smp.h>
+#include <asm/cpu-info.h>
+
+#include "op_impl.h"
+
+extern struct op_mips_model op_model_mipsxx __attribute__((weak));
+extern struct op_mips_model op_model_rm9000 __attribute__((weak));
+
+static struct op_mips_model *model;
+
+static struct op_counter_config ctr[20];
+
+static int op_mips_setup(void)
+{
+        /* Pre-compute the values to stuff in the hardware registers.  */
+        model->reg_setup(ctr);
+
+        /* Configure the registers on all cpus.  */
+        on_each_cpu(model->cpu_setup, 0, 0, 1);
+
+        return 0;
+}
+
+static int op_mips_create_files(struct super_block * sb, struct dentry * root)
+{
+        int i;
+
+        for (i = 0; i < model->num_counters; ++i) {
+                struct dentry *dir;
+                char buf[3];
+
+                snprintf(buf, sizeof buf, "%d", i);
+                dir = oprofilefs_mkdir(sb, root, buf);
+
+                oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled);
+                oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event);
+                oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count);
+                /* Dummies.  */
+                oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel);
+                oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user);
+                oprofilefs_create_ulong(sb, dir, "exl", &ctr[i].exl);
+                oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask);
+        }
+
+        return 0;
+}
+
+static int op_mips_start(void)
+{
+        on_each_cpu(model->cpu_start, NULL, 0, 1);
+
+        return 0;
+}
+
+static void op_mips_stop(void)
+{
+        /* Disable performance monitoring for all counters.  */
+        on_each_cpu(model->cpu_stop, NULL, 0, 1);
+}
+
+void __init oprofile_arch_init(struct oprofile_operations *ops)
+{
+        struct op_mips_model *lmodel = NULL;
+
+        switch (current_cpu_data.cputype) {
+        case CPU_24K:
+                lmodel = &op_model_mipsxx;
+                break;
+
+        case CPU_RM9000:
+                lmodel = &op_model_rm9000;
+                break;
+        };
+
+        if (!lmodel)
+                return;
+
+        if (lmodel->init())
+                return;
+
+        model = lmodel;
+
+        ops->create_files = op_mips_create_files;
+        ops->setup = op_mips_setup;
+        ops->start = op_mips_start;
+        ops->stop = op_mips_stop;
+        ops->cpu_type = lmodel->cpu_type;
+
+        printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
+               lmodel->cpu_type);
+}
+
+void oprofile_arch_exit(void)
+{
+        model->exit();
+}