/**
* @file nmi_int.c
*
- * @remark Copyright 2002 OProfile authors
+ * @remark Copyright 2002-2008 OProfile authors
* @remark Read the file COPYING
*
*/
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
#include <linux/kdebug.h>
+ #include <linux/cpu.h>
#include <asm/nmi.h>
#include <asm/msr.h>
#include <asm/apic.h>
static int nmi_start(void);
static void nmi_stop(void);
+ static void nmi_cpu_start(void *dummy);
+ static void nmi_cpu_stop(void *dummy);
/* 0 == registered but off, 1 == registered and on */
static int nmi_enabled = 0;
+ #ifdef CONFIG_SMP
+ static int oprofile_cpu_notifier(struct notifier_block *b, unsigned long action,
+ void *data)
+ {
+ int cpu = (unsigned long)data;
+ switch (action) {
+ case CPU_DOWN_FAILED:
+ case CPU_ONLINE:
+ smp_call_function_single(cpu, nmi_cpu_start, NULL, 0);
+ break;
+ case CPU_DOWN_PREPARE:
+ smp_call_function_single(cpu, nmi_cpu_stop, NULL, 1);
+ break;
+ }
+ return NOTIFY_DONE;
+ }
+
+ static struct notifier_block oprofile_cpu_nb = {
+ .notifier_call = oprofile_cpu_notifier
+ };
+ #endif
+
#ifdef CONFIG_PM
static int nmi_suspend(struct sys_device *dev, pm_message_t state)
{
+ /* Only one CPU left, just stop that one */
if (nmi_enabled == 1)
- nmi_stop();
+ nmi_cpu_stop(NULL);
return 0;
}
static int nmi_resume(struct sys_device *dev)
{
if (nmi_enabled == 1)
- nmi_start();
+ nmi_cpu_start(NULL);
return 0;
}
__u8 vendor = boot_cpu_data.x86_vendor;
__u8 family = boot_cpu_data.x86;
char *cpu_type;
+ int ret = 0;
if (!cpu_has_apic)
return -ENODEV;
default:
return -ENODEV;
case 6:
- model = &op_athlon_spec;
+ model = &op_amd_spec;
cpu_type = "i386/athlon";
break;
case 0xf:
- model = &op_athlon_spec;
+ model = &op_amd_spec;
/* Actually it could be i386/hammer too, but give
user space an consistent name. */
cpu_type = "x86-64/hammer";
break;
case 0x10:
- model = &op_athlon_spec;
+ model = &op_amd_spec;
cpu_type = "x86-64/family10";
break;
+ case 0x11:
+ model = &op_amd_spec;
+ cpu_type = "x86-64/family11h";
+ break;
}
break;
return -ENODEV;
}
- init_sysfs();
+ #ifdef CONFIG_SMP
+ register_cpu_notifier(&oprofile_cpu_nb);
+ #endif
- using_nmi = 1;
+ /* default values, can be overwritten by model */
ops->create_files = nmi_create_files;
ops->setup = nmi_setup;
ops->shutdown = nmi_shutdown;
ops->start = nmi_start;
ops->stop = nmi_stop;
ops->cpu_type = cpu_type;
+
+ if (model->init)
+ ret = model->init(ops);
+ if (ret)
+ return ret;
+
+ init_sysfs();
+ using_nmi = 1;
printk(KERN_INFO "oprofile: using NMI interrupt.\n");
return 0;
}
void op_nmi_exit(void)
{
- if (using_nmi)
+ if (using_nmi) {
exit_sysfs();
+ #ifdef CONFIG_SMP
+ unregister_cpu_notifier(&oprofile_cpu_nb);
+ #endif
+ }
+ if (model->exit)
+ model->exit();
}
* @remark Read the file COPYING
*
*
* Each CPU has a local buffer that stores PC value/event
* pairs. We also log context switches when we notice them.
{
int i;
- for_each_online_cpu(i)
+ for_each_online_cpu(i) {
vfree(per_cpu(cpu_buffer, i).buffer);
+ per_cpu(cpu_buffer, i).buffer = NULL;
+ }
}
int alloc_cpu_buffers(void)
return 1;
}
-static int oprofile_begin_trace(struct oprofile_cpu_buffer * cpu_buf)
+static int oprofile_begin_trace(struct oprofile_cpu_buffer *cpu_buf)
{
if (nr_available_slots(cpu_buf) < 4) {
cpu_buf->sample_lost_overflow++;
oprofile_add_ext_sample(pc, regs, event, is_kernel);
}
+#ifdef CONFIG_OPROFILE_IBS
+
+#define MAX_IBS_SAMPLE_SIZE 14
+static int log_ibs_sample(struct oprofile_cpu_buffer *cpu_buf,
+ unsigned long pc, int is_kernel, unsigned int *ibs, int ibs_code)
+{
+ struct task_struct *task;
+
+ cpu_buf->sample_received++;
+
+ if (nr_available_slots(cpu_buf) < MAX_IBS_SAMPLE_SIZE) {
+ cpu_buf->sample_lost_overflow++;
+ return 0;
+ }
+
+ is_kernel = !!is_kernel;
+
+ /* notice a switch from user->kernel or vice versa */
+ if (cpu_buf->last_is_kernel != is_kernel) {
+ cpu_buf->last_is_kernel = is_kernel;
+ add_code(cpu_buf, is_kernel);
+ }
+
+ /* notice a task switch */
+ if (!is_kernel) {
+ task = current;
+
+ if (cpu_buf->last_task != task) {
+ cpu_buf->last_task = task;
+ add_code(cpu_buf, (unsigned long)task);
+ }
+ }
+
+ add_code(cpu_buf, ibs_code);
+ add_sample(cpu_buf, ibs[0], ibs[1]);
+ add_sample(cpu_buf, ibs[2], ibs[3]);
+ add_sample(cpu_buf, ibs[4], ibs[5]);
+
+ if (ibs_code == IBS_OP_BEGIN) {
+ add_sample(cpu_buf, ibs[6], ibs[7]);
+ add_sample(cpu_buf, ibs[8], ibs[9]);
+ add_sample(cpu_buf, ibs[10], ibs[11]);
+ }
+
+ return 1;
+}
+
+void oprofile_add_ibs_sample(struct pt_regs *const regs,
+ unsigned int * const ibs_sample, u8 code)
+{
+ int is_kernel = !user_mode(regs);
+ unsigned long pc = profile_pc(regs);
+
+ struct oprofile_cpu_buffer *cpu_buf =
+ &per_cpu(cpu_buffer, smp_processor_id());
+
+ if (!backtrace_depth) {
+ log_ibs_sample(cpu_buf, pc, is_kernel, ibs_sample, code);
+ return;
+ }
+
+ /* if log_sample() fails we can't backtrace since we lost the source
+ * of this event */
+ if (log_ibs_sample(cpu_buf, pc, is_kernel, ibs_sample, code))
+ oprofile_ops.backtrace(regs, backtrace_depth);
+}
+
+#endif
+
void oprofile_add_pc(unsigned long pc, int is_kernel, unsigned long event)
{
struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer);
struct oprofile_cpu_buffer * b =
container_of(work, struct oprofile_cpu_buffer, work.work);
if (b->cpu != smp_processor_id()) {
- printk("WQ on CPU%d, prefer CPU%d\n",
+ printk(KERN_DEBUG "WQ on CPU%d, prefer CPU%d\n",
smp_processor_id(), b->cpu);
}
sync_buffer(b->cpu);
#define PCI_DEVICE_ID_AMD_K8_NB_ADDRMAP 0x1101
#define PCI_DEVICE_ID_AMD_K8_NB_MEMCTL 0x1102
#define PCI_DEVICE_ID_AMD_K8_NB_MISC 0x1103
+#define PCI_DEVICE_ID_AMD_10H_NB_HT 0x1200
+#define PCI_DEVICE_ID_AMD_10H_NB_MAP 0x1201
+#define PCI_DEVICE_ID_AMD_10H_NB_DRAM 0x1202
+#define PCI_DEVICE_ID_AMD_10H_NB_MISC 0x1203
+#define PCI_DEVICE_ID_AMD_10H_NB_LINK 0x1204
#define PCI_DEVICE_ID_AMD_LANCE 0x2000
#define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001
#define PCI_DEVICE_ID_AMD_SCSI 0x2020
#define PCI_DEVICE_ID_INTEL_ICH10_3 0x3a1a
#define PCI_DEVICE_ID_INTEL_ICH10_4 0x3a30
#define PCI_DEVICE_ID_INTEL_ICH10_5 0x3a60
+ #define PCI_DEVICE_ID_INTEL_PCH_0 0x3b10
+ #define PCI_DEVICE_ID_INTEL_PCH_1 0x3b11
+ #define PCI_DEVICE_ID_INTEL_PCH_2 0x3b30
#define PCI_DEVICE_ID_INTEL_IOAT_SNB 0x402f
#define PCI_DEVICE_ID_INTEL_5100_16 0x65f0
#define PCI_DEVICE_ID_INTEL_5100_21 0x65f5
projects / linux.git / commitdiff