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709bc87192
This patch just cleans up some files of Intel Processor Trace, does not change its behavior. This patch removes unused definitions and replaces a constant value with a macro. Signed-off-by: Takao Indoh <indou.takao@jp.fujitsu.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin<alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: H.Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1438681015-5124-1-git-send-email-indou.takao@jp.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
/*
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* Intel(R) Processor Trace PMU driver for perf
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* Copyright (c) 2013-2014, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* Intel PT is specified in the Intel Architecture Instruction Set Extensions
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* Programming Reference:
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* http://software.intel.com/en-us/intel-isa-extensions
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*/
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#ifndef __INTEL_PT_H__
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#define __INTEL_PT_H__
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/*
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* Single-entry ToPA: when this close to region boundary, switch
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* buffers to avoid losing data.
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*/
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#define TOPA_PMI_MARGIN 512
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#define TOPA_SHIFT 12
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static inline unsigned int sizes(unsigned int tsz)
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{
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return 1 << (tsz + TOPA_SHIFT);
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};
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struct topa_entry {
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u64 end : 1;
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u64 rsvd0 : 1;
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u64 intr : 1;
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u64 rsvd1 : 1;
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u64 stop : 1;
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u64 rsvd2 : 1;
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u64 size : 4;
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u64 rsvd3 : 2;
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u64 base : 36;
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u64 rsvd4 : 16;
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};
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#define PT_CPUID_LEAVES 2
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#define PT_CPUID_REGS_NUM 4 /* number of regsters (eax, ebx, ecx, edx) */
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enum pt_capabilities {
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PT_CAP_max_subleaf = 0,
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PT_CAP_cr3_filtering,
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PT_CAP_psb_cyc,
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PT_CAP_mtc,
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PT_CAP_topa_output,
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PT_CAP_topa_multiple_entries,
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PT_CAP_single_range_output,
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PT_CAP_payloads_lip,
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PT_CAP_mtc_periods,
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PT_CAP_cycle_thresholds,
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PT_CAP_psb_periods,
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};
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struct pt_pmu {
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struct pmu pmu;
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u32 caps[PT_CPUID_REGS_NUM * PT_CPUID_LEAVES];
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};
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/**
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* struct pt_buffer - buffer configuration; one buffer per task_struct or
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* cpu, depending on perf event configuration
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* @cpu: cpu for per-cpu allocation
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* @tables: list of ToPA tables in this buffer
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* @first: shorthand for first topa table
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* @last: shorthand for last topa table
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* @cur: current topa table
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* @nr_pages: buffer size in pages
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* @cur_idx: current output region's index within @cur table
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* @output_off: offset within the current output region
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* @data_size: running total of the amount of data in this buffer
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* @lost: if data was lost/truncated
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* @head: logical write offset inside the buffer
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* @snapshot: if this is for a snapshot/overwrite counter
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* @stop_pos: STOP topa entry in the buffer
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* @intr_pos: INT topa entry in the buffer
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* @data_pages: array of pages from perf
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* @topa_index: table of topa entries indexed by page offset
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*/
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struct pt_buffer {
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int cpu;
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struct list_head tables;
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struct topa *first, *last, *cur;
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unsigned int cur_idx;
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size_t output_off;
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unsigned long nr_pages;
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local_t data_size;
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local_t lost;
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local64_t head;
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bool snapshot;
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unsigned long stop_pos, intr_pos;
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void **data_pages;
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struct topa_entry *topa_index[0];
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};
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/**
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* struct pt - per-cpu pt context
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* @handle: perf output handle
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* @handle_nmi: do handle PT PMI on this cpu, there's an active event
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*/
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struct pt {
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struct perf_output_handle handle;
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int handle_nmi;
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};
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#endif /* __INTEL_PT_H__ */
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