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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/oprofile/common.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
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!
Diffstat (limited to 'arch/mips/oprofile/common.c')
-rw-r--r-- | arch/mips/oprofile/common.c | 106 |
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(); +} |