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Diffstat (limited to 'arch/x86/oprofile/op_model_ppro.c')
-rw-r--r--arch/x86/oprofile/op_model_ppro.c245
1 files changed, 0 insertions, 245 deletions
diff --git a/arch/x86/oprofile/op_model_ppro.c b/arch/x86/oprofile/op_model_ppro.c
deleted file mode 100644
index 7913b6921959..000000000000
--- a/arch/x86/oprofile/op_model_ppro.c
+++ /dev/null
@@ -1,245 +0,0 @@
-/*
- * @file op_model_ppro.h
- * Family 6 perfmon and architectural perfmon MSR operations
- *
- * @remark Copyright 2002 OProfile authors
- * @remark Copyright 2008 Intel Corporation
- * @remark Read the file COPYING
- *
- * @author John Levon
- * @author Philippe Elie
- * @author Graydon Hoare
- * @author Andi Kleen
- * @author Robert Richter <robert.richter@amd.com>
- */
-
-#include <linux/oprofile.h>
-#include <linux/slab.h>
-#include <asm/ptrace.h>
-#include <asm/msr.h>
-#include <asm/apic.h>
-#include <asm/nmi.h>
-
-#include "op_x86_model.h"
-#include "op_counter.h"
-
-static int num_counters = 2;
-static int counter_width = 32;
-
-#define MSR_PPRO_EVENTSEL_RESERVED ((0xFFFFFFFFULL<<32)|(1ULL<<21))
-
-static u64 reset_value[OP_MAX_COUNTER];
-
-static void ppro_shutdown(struct op_msrs const * const msrs)
-{
- int i;
-
- for (i = 0; i < num_counters; ++i) {
- if (!msrs->counters[i].addr)
- continue;
- release_perfctr_nmi(MSR_P6_PERFCTR0 + i);
- release_evntsel_nmi(MSR_P6_EVNTSEL0 + i);
- }
-}
-
-static int ppro_fill_in_addresses(struct op_msrs * const msrs)
-{
- int i;
-
- for (i = 0; i < num_counters; i++) {
- if (!reserve_perfctr_nmi(MSR_P6_PERFCTR0 + i))
- goto fail;
- if (!reserve_evntsel_nmi(MSR_P6_EVNTSEL0 + i)) {
- release_perfctr_nmi(MSR_P6_PERFCTR0 + i);
- goto fail;
- }
- /* both registers must be reserved */
- msrs->counters[i].addr = MSR_P6_PERFCTR0 + i;
- msrs->controls[i].addr = MSR_P6_EVNTSEL0 + i;
- continue;
- fail:
- if (!counter_config[i].enabled)
- continue;
- op_x86_warn_reserved(i);
- ppro_shutdown(msrs);
- return -EBUSY;
- }
-
- return 0;
-}
-
-
-static void ppro_setup_ctrs(struct op_x86_model_spec const *model,
- struct op_msrs const * const msrs)
-{
- u64 val;
- int i;
-
- if (boot_cpu_has(X86_FEATURE_ARCH_PERFMON)) {
- union cpuid10_eax eax;
- eax.full = cpuid_eax(0xa);
-
- /*
- * For Core2 (family 6, model 15), don't reset the
- * counter width:
- */
- if (!(eax.split.version_id == 0 &&
- __this_cpu_read(cpu_info.x86) == 6 &&
- __this_cpu_read(cpu_info.x86_model) == 15)) {
-
- if (counter_width < eax.split.bit_width)
- counter_width = eax.split.bit_width;
- }
- }
-
- /* clear all counters */
- for (i = 0; i < num_counters; ++i) {
- if (!msrs->controls[i].addr)
- continue;
- rdmsrl(msrs->controls[i].addr, val);
- if (val & ARCH_PERFMON_EVENTSEL_ENABLE)
- op_x86_warn_in_use(i);
- val &= model->reserved;
- wrmsrl(msrs->controls[i].addr, val);
- /*
- * avoid a false detection of ctr overflows in NMI *
- * handler
- */
- wrmsrl(msrs->counters[i].addr, -1LL);
- }
-
- /* enable active counters */
- for (i = 0; i < num_counters; ++i) {
- if (counter_config[i].enabled && msrs->counters[i].addr) {
- reset_value[i] = counter_config[i].count;
- wrmsrl(msrs->counters[i].addr, -reset_value[i]);
- rdmsrl(msrs->controls[i].addr, val);
- val &= model->reserved;
- val |= op_x86_get_ctrl(model, &counter_config[i]);
- wrmsrl(msrs->controls[i].addr, val);
- } else {
- reset_value[i] = 0;
- }
- }
-}
-
-
-static int ppro_check_ctrs(struct pt_regs * const regs,
- struct op_msrs const * const msrs)
-{
- u64 val;
- int i;
-
- for (i = 0; i < num_counters; ++i) {
- if (!reset_value[i])
- continue;
- rdmsrl(msrs->counters[i].addr, val);
- if (val & (1ULL << (counter_width - 1)))
- continue;
- oprofile_add_sample(regs, i);
- wrmsrl(msrs->counters[i].addr, -reset_value[i]);
- }
-
- /* Only P6 based Pentium M need to re-unmask the apic vector but it
- * doesn't hurt other P6 variant */
- apic_write(APIC_LVTPC, apic_read(APIC_LVTPC) & ~APIC_LVT_MASKED);
-
- /* We can't work out if we really handled an interrupt. We
- * might have caught a *second* counter just after overflowing
- * the interrupt for this counter then arrives
- * and we don't find a counter that's overflowed, so we
- * would return 0 and get dazed + confused. Instead we always
- * assume we found an overflow. This sucks.
- */
- return 1;
-}
-
-
-static void ppro_start(struct op_msrs const * const msrs)
-{
- u64 val;
- int i;
-
- for (i = 0; i < num_counters; ++i) {
- if (reset_value[i]) {
- rdmsrl(msrs->controls[i].addr, val);
- val |= ARCH_PERFMON_EVENTSEL_ENABLE;
- wrmsrl(msrs->controls[i].addr, val);
- }
- }
-}
-
-
-static void ppro_stop(struct op_msrs const * const msrs)
-{
- u64 val;
- int i;
-
- for (i = 0; i < num_counters; ++i) {
- if (!reset_value[i])
- continue;
- rdmsrl(msrs->controls[i].addr, val);
- val &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
- wrmsrl(msrs->controls[i].addr, val);
- }
-}
-
-struct op_x86_model_spec op_ppro_spec = {
- .num_counters = 2,
- .num_controls = 2,
- .reserved = MSR_PPRO_EVENTSEL_RESERVED,
- .fill_in_addresses = &ppro_fill_in_addresses,
- .setup_ctrs = &ppro_setup_ctrs,
- .check_ctrs = &ppro_check_ctrs,
- .start = &ppro_start,
- .stop = &ppro_stop,
- .shutdown = &ppro_shutdown
-};
-
-/*
- * Architectural performance monitoring.
- *
- * Newer Intel CPUs (Core1+) have support for architectural
- * events described in CPUID 0xA. See the IA32 SDM Vol3b.18 for details.
- * The advantage of this is that it can be done without knowing about
- * the specific CPU.
- */
-
-static void arch_perfmon_setup_counters(void)
-{
- union cpuid10_eax eax;
-
- eax.full = cpuid_eax(0xa);
-
- /* Workaround for BIOS bugs in 6/15. Taken from perfmon2 */
- if (eax.split.version_id == 0 && boot_cpu_data.x86 == 6 &&
- boot_cpu_data.x86_model == 15) {
- eax.split.version_id = 2;
- eax.split.num_counters = 2;
- eax.split.bit_width = 40;
- }
-
- num_counters = min((int)eax.split.num_counters, OP_MAX_COUNTER);
-
- op_arch_perfmon_spec.num_counters = num_counters;
- op_arch_perfmon_spec.num_controls = num_counters;
-}
-
-static int arch_perfmon_init(struct oprofile_operations *ignore)
-{
- arch_perfmon_setup_counters();
- return 0;
-}
-
-struct op_x86_model_spec op_arch_perfmon_spec = {
- .reserved = MSR_PPRO_EVENTSEL_RESERVED,
- .init = &arch_perfmon_init,
- /* num_counters/num_controls filled in at runtime */
- .fill_in_addresses = &ppro_fill_in_addresses,
- /* user space does the cpuid check for available events */
- .setup_ctrs = &ppro_setup_ctrs,
- .check_ctrs = &ppro_check_ctrs,
- .start = &ppro_start,
- .stop = &ppro_stop,
- .shutdown = &ppro_shutdown
-};
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