Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / mips / oprofile / common.c

diff --git a/kernel/arch/mips/oprofile/common.c b/kernel/arch/mips/oprofile/common.c
new file mode 100644 (file)
index 0000000..81f5895
--- /dev/null
+++ b/kernel/arch/mips/oprofile/common.c
@@ -0,0 +1,146 @@
+/*
+ * 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, 2005 Ralf Baechle
+ * Copyright (C) 2005 MIPS Technologies, Inc.
+ */
+#include <linux/compiler.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/oprofile.h>
+#include <linux/smp.h>
+#include <asm/cpu-info.h>
+#include <asm/cpu-type.h>
+
+#include "op_impl.h"
+
+extern struct op_mips_model op_model_mipsxx_ops __weak;
+extern struct op_mips_model op_model_loongson2_ops __weak;
+extern struct op_mips_model op_model_loongson3_ops __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, NULL, 1);
+
+       return 0;
+}
+
+static int op_mips_create_files(struct dentry *root)
+{
+       int i;
+
+       for (i = 0; i < model->num_counters; ++i) {
+               struct dentry *dir;
+               char buf[4];
+
+               snprintf(buf, sizeof buf, "%d", i);
+               dir = oprofilefs_mkdir(root, buf);
+
+               oprofilefs_create_ulong(dir, "enabled", &ctr[i].enabled);
+               oprofilefs_create_ulong(dir, "event", &ctr[i].event);
+               oprofilefs_create_ulong(dir, "count", &ctr[i].count);
+               oprofilefs_create_ulong(dir, "kernel", &ctr[i].kernel);
+               oprofilefs_create_ulong(dir, "user", &ctr[i].user);
+               oprofilefs_create_ulong(dir, "exl", &ctr[i].exl);
+               /* Dummy.  */
+               oprofilefs_create_ulong(dir, "unit_mask", &ctr[i].unit_mask);
+       }
+
+       return 0;
+}
+
+static int op_mips_start(void)
+{
+       on_each_cpu(model->cpu_start, NULL, 1);
+
+       return 0;
+}
+
+static void op_mips_stop(void)
+{
+       /* Disable performance monitoring for all counters.  */
+       on_each_cpu(model->cpu_stop, NULL, 1);
+}
+
+int __init oprofile_arch_init(struct oprofile_operations *ops)
+{
+       struct op_mips_model *lmodel = NULL;
+       int res;
+
+       switch (current_cpu_type()) {
+       case CPU_5KC:
+       case CPU_M14KC:
+       case CPU_M14KEC:
+       case CPU_20KC:
+       case CPU_24K:
+       case CPU_25KF:
+       case CPU_34K:
+       case CPU_1004K:
+       case CPU_74K:
+       case CPU_1074K:
+       case CPU_INTERAPTIV:
+       case CPU_PROAPTIV:
+       case CPU_P5600:
+       case CPU_M5150:
+       case CPU_LOONGSON1:
+       case CPU_SB1:
+       case CPU_SB1A:
+       case CPU_R10000:
+       case CPU_R12000:
+       case CPU_R14000:
+       case CPU_R16000:
+       case CPU_XLR:
+               lmodel = &op_model_mipsxx_ops;
+               break;
+
+       case CPU_LOONGSON2:
+               lmodel = &op_model_loongson2_ops;
+               break;
+       case CPU_LOONGSON3:
+               lmodel = &op_model_loongson3_ops;
+               break;
+       };
+
+       /*
+        * Always set the backtrace. This allows unsupported CPU types to still
+        * use timer-based oprofile.
+        */
+       ops->backtrace = op_mips_backtrace;
+
+       if (!lmodel)
+               return -ENODEV;
+
+       res = lmodel->init();
+       if (res)
+               return res;
+
+       model = lmodel;
+
+       ops->create_files       = op_mips_create_files;
+       ops->setup              = op_mips_setup;
+       //ops->shutdown         = op_mips_shutdown;
+       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);
+
+       return 0;
+}
+
+void oprofile_arch_exit(void)
+{
+       if (model)
+               model->exit();
+}