Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 186 insertions, 0 deletions

diff --git a/arch/ppc64/oprofile/common.c b/arch/ppc64/oprofile/common.c
new file mode 100644
index 000000000000..b28bfda23d94
--- /dev/null
+++ b/arch/ppc64/oprofile/common.c
@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
+ *
+ * Based on alpha version.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/oprofile.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/errno.h>
+#include <asm/ptrace.h>
+#include <asm/system.h>
+#include <asm/pmc.h>
+
+#include "op_impl.h"
+
+extern struct op_ppc64_model op_model_rs64;
+extern struct op_ppc64_model op_model_power4;
+static struct op_ppc64_model *model;
+
+static struct op_counter_config ctr[OP_MAX_COUNTER];
+static struct op_system_config sys;
+
+static void op_handle_interrupt(struct pt_regs *regs)
+{
+        model->handle_interrupt(regs, ctr);
+}
+
+static int op_ppc64_setup(void)
+{
+        int err;
+
+        /* Grab the hardware */
+        err = reserve_pmc_hardware(op_handle_interrupt);
+        if (err)
+                return err;
+
+        /* Pre-compute the values to stuff in the hardware registers.  */
+        model->reg_setup(ctr, &sys, model->num_counters);
+
+        /* Configure the registers on all cpus.  */
+        on_each_cpu(model->cpu_setup, NULL, 0, 1);
+
+        return 0;
+}
+
+static void op_ppc64_shutdown(void)
+{
+        release_pmc_hardware();
+}
+
+static void op_ppc64_cpu_start(void *dummy)
+{
+        model->start(ctr);
+}
+
+static int op_ppc64_start(void)
+{
+        on_each_cpu(op_ppc64_cpu_start, NULL, 0, 1);
+        return 0;
+}
+
+static inline void op_ppc64_cpu_stop(void *dummy)
+{
+        model->stop();
+}
+
+static void op_ppc64_stop(void)
+{
+        on_each_cpu(op_ppc64_cpu_stop, NULL, 0, 1);
+}
+
+static int op_ppc64_create_files(struct super_block *sb, struct dentry *root)
+{
+        int i;
+
+        /*
+         * There is one mmcr0, mmcr1 and mmcra for setting the events for
+         * all of the counters.
+         */
+        oprofilefs_create_ulong(sb, root, "mmcr0", &sys.mmcr0);
+        oprofilefs_create_ulong(sb, root, "mmcr1", &sys.mmcr1);
+        oprofilefs_create_ulong(sb, root, "mmcra", &sys.mmcra);
+
+        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);
+                /*
+                 * We dont support per counter user/kernel selection, but
+                 * we leave the entries because userspace expects them
+                 */
+                oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel);
+                oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user);
+                oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask);
+        }
+
+        oprofilefs_create_ulong(sb, root, "enable_kernel", &sys.enable_kernel);
+        oprofilefs_create_ulong(sb, root, "enable_user", &sys.enable_user);
+        oprofilefs_create_ulong(sb, root, "backtrace_spinlocks",
+                                &sys.backtrace_spinlocks);
+
+        /* Default to tracing both kernel and user */
+        sys.enable_kernel = 1;
+        sys.enable_user = 1;
+
+        /* Turn on backtracing through spinlocks by default */
+        sys.backtrace_spinlocks = 1;
+
+        return 0;
+}
+
+int __init oprofile_arch_init(struct oprofile_operations *ops)
+{
+        unsigned int pvr;
+
+        pvr = mfspr(SPRN_PVR);
+
+        switch (PVR_VER(pvr)) {
+                case PV_630:
+                case PV_630p:
+                        model = &op_model_rs64;
+                        model->num_counters = 8;
+                        ops->cpu_type = "ppc64/power3";
+                        break;
+
+                case PV_NORTHSTAR:
+                case PV_PULSAR:
+                case PV_ICESTAR:
+                case PV_SSTAR:
+                        model = &op_model_rs64;
+                        model->num_counters = 8;
+                        ops->cpu_type = "ppc64/rs64";
+                        break;
+
+                case PV_POWER4:
+                case PV_POWER4p:
+                        model = &op_model_power4;
+                        model->num_counters = 8;
+                        ops->cpu_type = "ppc64/power4";
+                        break;
+
+                case PV_970:
+                case PV_970FX:
+                        model = &op_model_power4;
+                        model->num_counters = 8;
+                        ops->cpu_type = "ppc64/970";
+                        break;
+
+                case PV_POWER5:
+                case PV_POWER5p:
+                        model = &op_model_power4;
+                        model->num_counters = 6;
+                        ops->cpu_type = "ppc64/power5";
+                        break;
+
+                default:
+                        return -ENODEV;
+        }
+
+        ops->create_files = op_ppc64_create_files;
+        ops->setup = op_ppc64_setup;
+        ops->shutdown = op_ppc64_shutdown;
+        ops->start = op_ppc64_start;
+        ops->stop = op_ppc64_stop;
+
+        printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
+               ops->cpu_type);
+
+        return 0;
+}
+
+void oprofile_arch_exit(void)
+{
+}