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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Cell Broadband Engine OProfile Support
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*
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* (C) Copyright IBM Corporation 2006
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*
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* Author: Maynard Johnson <maynardj@us.ibm.com>
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*/
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#ifndef PR_UTIL_H
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#define PR_UTIL_H
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#include <linux/cpumask.h>
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#include <linux/oprofile.h>
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#include <asm/cell-pmu.h>
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#include <asm/cell-regs.h>
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#include <asm/spu.h>
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/* Defines used for sync_start */
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#define SKIP_GENERIC_SYNC 0
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#define SYNC_START_ERROR -1
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#define DO_GENERIC_SYNC 1
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#define SPUS_PER_NODE 8
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#define DEFAULT_TIMER_EXPIRE (HZ / 10)
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extern struct delayed_work spu_work;
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extern int spu_prof_running;
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#define TRACE_ARRAY_SIZE 1024
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extern spinlock_t oprof_spu_smpl_arry_lck;
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struct spu_overlay_info { /* map of sections within an SPU overlay */
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unsigned int vma; /* SPU virtual memory address from elf */
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unsigned int size; /* size of section from elf */
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unsigned int offset; /* offset of section into elf file */
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unsigned int buf;
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};
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struct vma_to_fileoffset_map { /* map of sections within an SPU program */
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struct vma_to_fileoffset_map *next; /* list pointer */
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unsigned int vma; /* SPU virtual memory address from elf */
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unsigned int size; /* size of section from elf */
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unsigned int offset; /* offset of section into elf file */
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unsigned int guard_ptr;
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unsigned int guard_val;
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/*
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* The guard pointer is an entry in the _ovly_buf_table,
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* computed using ovly.buf as the index into the table. Since
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* ovly.buf values begin at '1' to reference the first (or 0th)
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* entry in the _ovly_buf_table, the computation subtracts 1
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* from ovly.buf.
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* The guard value is stored in the _ovly_buf_table entry and
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* is an index (starting at 1) back to the _ovly_table entry
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* that is pointing at this _ovly_buf_table entry. So, for
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* example, for an overlay scenario with one overlay segment
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* and two overlay sections:
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* - Section 1 points to the first entry of the
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* _ovly_buf_table, which contains a guard value
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* of '1', referencing the first (index=0) entry of
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* _ovly_table.
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* - Section 2 points to the second entry of the
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* _ovly_buf_table, which contains a guard value
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* of '2', referencing the second (index=1) entry of
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* _ovly_table.
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*/
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};
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struct spu_buffer {
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int last_guard_val;
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int ctx_sw_seen;
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unsigned long *buff;
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unsigned int head, tail;
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};
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/* The three functions below are for maintaining and accessing
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* the vma-to-fileoffset map.
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*/
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struct vma_to_fileoffset_map *create_vma_map(const struct spu *spu,
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unsigned long objectid);
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unsigned int vma_map_lookup(struct vma_to_fileoffset_map *map,
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unsigned int vma, const struct spu *aSpu,
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int *grd_val);
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void vma_map_free(struct vma_to_fileoffset_map *map);
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/*
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* Entry point for SPU profiling.
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* cycles_reset is the SPU_CYCLES count value specified by the user.
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*/
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int start_spu_profiling_cycles(unsigned int cycles_reset);
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void start_spu_profiling_events(void);
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void stop_spu_profiling_cycles(void);
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void stop_spu_profiling_events(void);
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/* add the necessary profiling hooks */
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int spu_sync_start(void);
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/* remove the hooks */
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int spu_sync_stop(void);
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/* Record SPU program counter samples to the oprofile event buffer. */
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void spu_sync_buffer(int spu_num, unsigned int *samples,
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int num_samples);
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void set_spu_profiling_frequency(unsigned int freq_khz, unsigned int cycles_reset);
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#endif /* PR_UTIL_H */
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