8588d10671
Currently, oprofile fails silently on platforms where a non-OS entity such as the system firmware "enables" and uses a performance counter. There is a warning in the code for this case. The warning indicates an already running counter. If oprofile doesn't collect data, then try using a different performance counter on your platform to monitor the desired event. Delete the counter from the desired event by editing the /usr/share/oprofile/<cpu_type>/<cpu>/events file. If the event cannot be monitored by any other counter, contact your hardware or BIOS vendor. Cc: Shashi Belur <shashi-kiran.belur@hp.com> Cc: Tony Jones <tonyj@suse.de> Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/**
|
|
* @file op_x86_model.h
|
|
* interface to x86 model-specific MSR operations
|
|
*
|
|
* @remark Copyright 2002 OProfile authors
|
|
* @remark Read the file COPYING
|
|
*
|
|
* @author Graydon Hoare
|
|
* @author Robert Richter <robert.richter@amd.com>
|
|
*/
|
|
|
|
#ifndef OP_X86_MODEL_H
|
|
#define OP_X86_MODEL_H
|
|
|
|
#include <asm/types.h>
|
|
#include <asm/perf_event.h>
|
|
|
|
struct op_msr {
|
|
unsigned long addr;
|
|
u64 saved;
|
|
};
|
|
|
|
struct op_msrs {
|
|
struct op_msr *counters;
|
|
struct op_msr *controls;
|
|
struct op_msr *multiplex;
|
|
};
|
|
|
|
struct pt_regs;
|
|
|
|
struct oprofile_operations;
|
|
|
|
/* The model vtable abstracts the differences between
|
|
* various x86 CPU models' perfctr support.
|
|
*/
|
|
struct op_x86_model_spec {
|
|
unsigned int num_counters;
|
|
unsigned int num_controls;
|
|
unsigned int num_virt_counters;
|
|
u64 reserved;
|
|
u16 event_mask;
|
|
int (*init)(struct oprofile_operations *ops);
|
|
void (*exit)(void);
|
|
void (*fill_in_addresses)(struct op_msrs * const msrs);
|
|
void (*setup_ctrs)(struct op_x86_model_spec const *model,
|
|
struct op_msrs const * const msrs);
|
|
int (*check_ctrs)(struct pt_regs * const regs,
|
|
struct op_msrs const * const msrs);
|
|
void (*start)(struct op_msrs const * const msrs);
|
|
void (*stop)(struct op_msrs const * const msrs);
|
|
void (*shutdown)(struct op_msrs const * const msrs);
|
|
#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
|
|
void (*switch_ctrl)(struct op_x86_model_spec const *model,
|
|
struct op_msrs const * const msrs);
|
|
#endif
|
|
};
|
|
|
|
struct op_counter_config;
|
|
|
|
static inline void op_x86_warn_in_use(int counter)
|
|
{
|
|
/*
|
|
* The warning indicates an already running counter. If
|
|
* oprofile doesn't collect data, then try using a different
|
|
* performance counter on your platform to monitor the desired
|
|
* event. Delete counter #%d from the desired event by editing
|
|
* the /usr/share/oprofile/%s/<cpu>/events file. If the event
|
|
* cannot be monitored by any other counter, contact your
|
|
* hardware or BIOS vendor.
|
|
*/
|
|
pr_warning("oprofile: counter #%d on cpu #%d may already be used\n",
|
|
counter, smp_processor_id());
|
|
}
|
|
|
|
static inline void op_x86_warn_reserved(int counter)
|
|
{
|
|
pr_warning("oprofile: counter #%d is already reserved\n", counter);
|
|
}
|
|
|
|
extern u64 op_x86_get_ctrl(struct op_x86_model_spec const *model,
|
|
struct op_counter_config *counter_config);
|
|
extern int op_x86_phys_to_virt(int phys);
|
|
extern int op_x86_virt_to_phys(int virt);
|
|
|
|
extern struct op_x86_model_spec op_ppro_spec;
|
|
extern struct op_x86_model_spec op_p4_spec;
|
|
extern struct op_x86_model_spec op_p4_ht2_spec;
|
|
extern struct op_x86_model_spec op_amd_spec;
|
|
extern struct op_x86_model_spec op_arch_perfmon_spec;
|
|
|
|
#endif /* OP_X86_MODEL_H */
|