diff options
Diffstat (limited to 'arch/alpha/oprofile/common.c')
| -rw-r--r-- | arch/alpha/oprofile/common.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/arch/alpha/oprofile/common.c b/arch/alpha/oprofile/common.c deleted file mode 100644 index 1b1259c7d7d1..000000000000 --- a/arch/alpha/oprofile/common.c +++ /dev/null @@ -1,189 +0,0 @@ -/** - * @file arch/alpha/oprofile/common.c - * - * @remark Copyright 2002 OProfile authors - * @remark Read the file COPYING - * - * @author Richard Henderson <rth@twiddle.net> - */ - -#include <linux/oprofile.h> -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/errno.h> -#include <asm/ptrace.h> -#include <asm/special_insns.h> - -#include "op_impl.h" - -extern struct op_axp_model op_model_ev4 __attribute__((weak)); -extern struct op_axp_model op_model_ev5 __attribute__((weak)); -extern struct op_axp_model op_model_pca56 __attribute__((weak)); -extern struct op_axp_model op_model_ev6 __attribute__((weak)); -extern struct op_axp_model op_model_ev67 __attribute__((weak)); - -static struct op_axp_model *model; - -extern void (*perf_irq)(unsigned long, struct pt_regs *); -static void (*save_perf_irq)(unsigned long, struct pt_regs *); - -static struct op_counter_config ctr[20]; -static struct op_system_config sys; -static struct op_register_config reg; - -/* Called from do_entInt to handle the performance monitor interrupt. */ - -static void -op_handle_interrupt(unsigned long which, struct pt_regs *regs) -{ - model->handle_interrupt(which, regs, ctr); - - /* If the user has selected an interrupt frequency that is - not exactly the width of the counter, write a new value - into the counter such that it'll overflow after N more - events. */ - if ((reg.need_reset >> which) & 1) - model->reset_ctr(®, which); -} - -static int -op_axp_setup(void) -{ - unsigned long i, e; - - /* Install our interrupt handler into the existing hook. */ - save_perf_irq = perf_irq; - perf_irq = op_handle_interrupt; - - /* Compute the mask of enabled counters. */ - for (i = e = 0; i < model->num_counters; ++i) - if (ctr[i].enabled) - e |= 1 << i; - reg.enable = e; - - /* Pre-compute the values to stuff in the hardware registers. */ - model->reg_setup(®, ctr, &sys); - - /* Configure the registers on all cpus. */ - smp_call_function(model->cpu_setup, ®, 1); - model->cpu_setup(®); - return 0; -} - -static void -op_axp_shutdown(void) -{ - /* Remove our interrupt handler. We may be removing this module. */ - perf_irq = save_perf_irq; -} - -static void -op_axp_cpu_start(void *dummy) -{ - wrperfmon(1, reg.enable); -} - -static int -op_axp_start(void) -{ - smp_call_function(op_axp_cpu_start, NULL, 1); - op_axp_cpu_start(NULL); - return 0; -} - -static inline void -op_axp_cpu_stop(void *dummy) -{ - /* Disable performance monitoring for all counters. */ - wrperfmon(0, -1); -} - -static void -op_axp_stop(void) -{ - smp_call_function(op_axp_cpu_stop, NULL, 1); - op_axp_cpu_stop(NULL); -} - -static int -op_axp_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); - /* Dummies. */ - oprofilefs_create_ulong(dir, "kernel", &ctr[i].kernel); - oprofilefs_create_ulong(dir, "user", &ctr[i].user); - oprofilefs_create_ulong(dir, "unit_mask", &ctr[i].unit_mask); - } - - if (model->can_set_proc_mode) { - oprofilefs_create_ulong(root, "enable_pal", - &sys.enable_pal); - oprofilefs_create_ulong(root, "enable_kernel", - &sys.enable_kernel); - oprofilefs_create_ulong(root, "enable_user", - &sys.enable_user); - } - - return 0; -} - -int __init -oprofile_arch_init(struct oprofile_operations *ops) -{ - struct op_axp_model *lmodel = NULL; - - switch (implver()) { - case IMPLVER_EV4: - lmodel = &op_model_ev4; - break; - case IMPLVER_EV5: - /* 21164PC has a slightly different set of events. - Recognize the chip by the presence of the MAX insns. */ - if (!amask(AMASK_MAX)) - lmodel = &op_model_pca56; - else - lmodel = &op_model_ev5; - break; - case IMPLVER_EV6: - /* 21264A supports ProfileMe. - Recognize the chip by the presence of the CIX insns. */ - if (!amask(AMASK_CIX)) - lmodel = &op_model_ev67; - else - lmodel = &op_model_ev6; - break; - } - - if (!lmodel) - return -ENODEV; - model = lmodel; - - ops->create_files = op_axp_create_files; - ops->setup = op_axp_setup; - ops->shutdown = op_axp_shutdown; - ops->start = op_axp_start; - ops->stop = op_axp_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) -{ -} |