cregit-Linux how code gets into the kernel

Release 4.14 arch/x86/oprofile/op_x86_model.h

/**
 * @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);
	
int		(*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()); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Richter2095.24%150.00%
Chumbalkar Nagananda14.76%150.00%
Total21100.00%2100.00%


static inline void op_x86_warn_reserved(int counter) { pr_warning("oprofile: counter #%d is already reserved\n", counter); }

Contributors

PersonTokensPropCommitsCommitProp
Robert Richter17100.00%1100.00%
Total17100.00%1100.00%

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 */

Overall Contributors

PersonTokensPropCommitsCommitProp
John Levon13242.86%314.29%
Robert Richter11637.66%1152.38%
Jason Yeh3411.04%14.76%
Don Zickus144.55%14.76%
Andi Kleen51.62%14.76%
Greg Banks41.30%14.76%
Ingo Molnar10.32%14.76%
Simon Arlott10.32%14.76%
Chumbalkar Nagananda10.32%14.76%
Total308100.00%21100.00%
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