linux/arch/powerpc/oprofile/cell/pr_util.h
Linus Torvalds 4ce5f24193 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile: (31 commits)
  powerpc/oprofile: fix whitespaces in op_model_cell.c
  powerpc/oprofile: IBM CELL: add SPU event profiling support
  powerpc/oprofile: fix cell/pr_util.h
  powerpc/oprofile: IBM CELL: cleanup and restructuring
  oprofile: make new cpu buffer functions part of the api
  oprofile: remove #ifdef CONFIG_OPROFILE_IBS in non-ibs code
  ring_buffer: fix ring_buffer_event_length()
  oprofile: use new data sample format for ibs
  oprofile: add op_cpu_buffer_get_data()
  oprofile: add op_cpu_buffer_add_data()
  oprofile: rework implementation of cpu buffer events
  oprofile: modify op_cpu_buffer_read_entry()
  oprofile: add op_cpu_buffer_write_reserve()
  oprofile: rename variables in add_ibs_begin()
  oprofile: rename add_sample() in cpu_buffer.c
  oprofile: rename variable ibs_allowed to has_ibs in op_model_amd.c
  oprofile: making add_sample_entry() inline
  oprofile: remove backtrace code for ibs
  oprofile: remove unused ibs macro
  oprofile: remove unused components in struct oprofile_cpu_buffer
  ...
2009-01-09 12:43:06 -08:00

115 lines
3.5 KiB
C

/*
* Cell Broadband Engine OProfile Support
*
* (C) Copyright IBM Corporation 2006
*
* Author: Maynard Johnson <maynardj@us.ibm.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef PR_UTIL_H
#define PR_UTIL_H
#include <linux/cpumask.h>
#include <linux/oprofile.h>
#include <asm/cell-pmu.h>
#include <asm/cell-regs.h>
#include <asm/spu.h>
/* Defines used for sync_start */
#define SKIP_GENERIC_SYNC 0
#define SYNC_START_ERROR -1
#define DO_GENERIC_SYNC 1
#define SPUS_PER_NODE 8
#define DEFAULT_TIMER_EXPIRE (HZ / 10)
extern struct delayed_work spu_work;
extern int spu_prof_running;
#define TRACE_ARRAY_SIZE 1024
extern spinlock_t oprof_spu_smpl_arry_lck;
struct spu_overlay_info { /* map of sections within an SPU overlay */
unsigned int vma; /* SPU virtual memory address from elf */
unsigned int size; /* size of section from elf */
unsigned int offset; /* offset of section into elf file */
unsigned int buf;
};
struct vma_to_fileoffset_map { /* map of sections within an SPU program */
struct vma_to_fileoffset_map *next; /* list pointer */
unsigned int vma; /* SPU virtual memory address from elf */
unsigned int size; /* size of section from elf */
unsigned int offset; /* offset of section into elf file */
unsigned int guard_ptr;
unsigned int guard_val;
/*
* The guard pointer is an entry in the _ovly_buf_table,
* computed using ovly.buf as the index into the table. Since
* ovly.buf values begin at '1' to reference the first (or 0th)
* entry in the _ovly_buf_table, the computation subtracts 1
* from ovly.buf.
* The guard value is stored in the _ovly_buf_table entry and
* is an index (starting at 1) back to the _ovly_table entry
* that is pointing at this _ovly_buf_table entry. So, for
* example, for an overlay scenario with one overlay segment
* and two overlay sections:
* - Section 1 points to the first entry of the
* _ovly_buf_table, which contains a guard value
* of '1', referencing the first (index=0) entry of
* _ovly_table.
* - Section 2 points to the second entry of the
* _ovly_buf_table, which contains a guard value
* of '2', referencing the second (index=1) entry of
* _ovly_table.
*/
};
struct spu_buffer {
int last_guard_val;
int ctx_sw_seen;
unsigned long *buff;
unsigned int head, tail;
};
/* The three functions below are for maintaining and accessing
* the vma-to-fileoffset map.
*/
struct vma_to_fileoffset_map *create_vma_map(const struct spu *spu,
unsigned long objectid);
unsigned int vma_map_lookup(struct vma_to_fileoffset_map *map,
unsigned int vma, const struct spu *aSpu,
int *grd_val);
void vma_map_free(struct vma_to_fileoffset_map *map);
/*
* Entry point for SPU profiling.
* cycles_reset is the SPU_CYCLES count value specified by the user.
*/
int start_spu_profiling_cycles(unsigned int cycles_reset);
void start_spu_profiling_events(void);
void stop_spu_profiling_cycles(void);
void stop_spu_profiling_events(void);
/* add the necessary profiling hooks */
int spu_sync_start(void);
/* remove the hooks */
int spu_sync_stop(void);
/* Record SPU program counter samples to the oprofile event buffer. */
void spu_sync_buffer(int spu_num, unsigned int *samples,
int num_samples);
void set_spu_profiling_frequency(unsigned int freq_khz, unsigned int cycles_reset);
#endif /* PR_UTIL_H */