127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
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/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM perf_trace_counters
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#if !defined(_PERF_TRACE_COUNTERS_H_) || defined(TRACE_HEADER_MULTI_READ)
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#define _PERF_TRACE_COUNTERS_H_
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/* Ctr index for PMCNTENSET/CLR */
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#define CC 0x80000000
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#define C0 0x1
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#define C1 0x10
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#define C2 0x100
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#define C3 0x1000
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#include <linux/sched.h>
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#include <linux/tracepoint.h>
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TRACE_EVENT(sched_switch_with_ctrs,
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TP_PROTO(pid_t prev, pid_t next),
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TP_ARGS(prev, next),
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TP_STRUCT__entry(
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__field(pid_t, old_pid)
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__field(pid_t, new_pid)
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__field(u32, cctr)
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__field(u32, ctr0)
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__field(u32, ctr1)
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__field(u32, ctr2)
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__field(u32, ctr3)
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),
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TP_fast_assign(
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__entry->old_pid = prev;
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__entry->new_pid = next;
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/* cycle counter */
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/* Disable */
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asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(CC));
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/* Read value */
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asm volatile("mrc p15, 0, %0, c9, c13, 0"
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: "=r"(__entry->cctr));
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/* Reset */
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asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r"(0));
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/* Enable */
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asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(CC));
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/* ctr 0 */
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/* Disable */
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asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(C0));
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/* Select */
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asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(0));
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/* Read value */
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asm volatile("mrc p15, 0, %0, c9, c13, 2"
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: "=r"(__entry->ctr0));
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/* Reset */
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asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r"(0));
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/* Enable */
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asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(C0));
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/* ctr 1 */
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/* Disable */
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asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(C1));
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/* Select */
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asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(1));
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/* Read value */
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asm volatile("mrc p15, 0, %0, c9, c13, 2"
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: "=r"(__entry->ctr1));
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/* Reset */
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asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r"(0));
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/* Enable */
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asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(C1));
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/* ctr 2 */
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/* Disable */
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asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(C2));
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/* Select */
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asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(2));
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/* Read value */
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asm volatile("mrc p15, 0, %0, c9, c13, 2"
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: "=r"(__entry->ctr2));
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/* Reset */
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asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r"(0));
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/* Enable */
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asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(C2));
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/* ctr 3 */
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/* Disable */
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asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(C3));
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/* Select */
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asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(3));
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/* Read value */
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asm volatile("mrc p15, 0, %0, c9, c13, 2"
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: "=r"(__entry->ctr3));
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/* Reset */
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asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r"(0));
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/* Enable */
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asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(C3));
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),
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TP_printk("prev_pid=%d, next_pid=%d, CCNTR: %u, CTR0: %u," \
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" CTR1: %u, CTR2: %u, CTR3: %u",
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__entry->old_pid, __entry->new_pid,
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__entry->cctr, __entry->ctr0, __entry->ctr1,
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__entry->ctr2, __entry->ctr3)
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);
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#endif
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH ../../arch/arm/mach-msm
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#define TRACE_INCLUDE_FILE perf_trace_counters
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#include <trace/define_trace.h>
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