144 lines
3.9 KiB
C
144 lines
3.9 KiB
C
/* Copyright (c) 2013-2014, 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 0x2
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#define C2 0x4
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#define C3 0x8
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#define C_ALL (CC | C0 | C1 | C2 | C3)
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#define NUM_L1_CTRS 4
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#define NUM_L2_PERCPU 2
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#include <linux/sched.h>
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#include <linux/cpumask.h>
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#include <linux/tracepoint.h>
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#include <mach/msm-krait-l2-accessors.h>
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DECLARE_PER_CPU(u32, cntenset_val);
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DECLARE_PER_CPU(unsigned long, l2_enmask);
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DECLARE_PER_CPU(u32, previous_ccnt);
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DECLARE_PER_CPU(u32[NUM_L1_CTRS], previous_l1_cnts);
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DECLARE_PER_CPU(u32[NUM_L2_PERCPU], previous_l2_cnts);
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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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__field(u32, lctr0)
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__field(u32, lctr1)
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),
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TP_fast_assign(
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u32 cpu = smp_processor_id();
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unsigned long idx;
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u32 i;
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u32 counter_reg;
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u32 val;
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u32 cnten_val;
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unsigned long l2_cnten_val;
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u32 num_l2ctrs;
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u32 total_ccnt = 0;
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u32 total_cnt = 0;
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u32 delta_l1_cnts[NUM_L1_CTRS];
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u32 delta_l2_cnts[NUM_L2_PERCPU];
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__entry->old_pid = prev;
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__entry->new_pid = next;
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val = get_l2_indirect_reg(L2PMCR);
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num_l2ctrs = ((val >> 11) & 0x1f) + 1;
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cnten_val = per_cpu(cntenset_val, cpu);
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if (cnten_val & 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"(total_ccnt));
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__entry->cctr = total_ccnt -
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per_cpu(previous_ccnt, cpu);
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per_cpu(previous_ccnt, cpu) = total_ccnt;
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}
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for (i = 0; i < NUM_L1_CTRS; i++) {
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if (cnten_val & (1 << i)) {
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/* Select */
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asm volatile(
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"mcr p15, 0, %0, c9, c12, 5"
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: : "r"(i));
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/* Read value */
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asm volatile(
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"mrc p15, 0, %0, c9, c13, 2"
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: "=r"(total_cnt));
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delta_l1_cnts[i] = total_cnt -
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per_cpu(previous_l1_cnts[i], cpu);
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per_cpu(previous_l1_cnts[i], cpu) =
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total_cnt;
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} else
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delta_l1_cnts[i] = 0;
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}
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/* L2 counters */
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i = 0;
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delta_l2_cnts[0] = 0;
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delta_l2_cnts[1] = 0;
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l2_cnten_val = per_cpu(l2_enmask, cpu);
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for_each_set_bit(idx, &l2_cnten_val, num_l2ctrs) {
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/* L2PMEVCNTR values go from 0x421,
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* 0x431..
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* So we multiply idx by 16 to get the
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* counter reg value
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*/
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counter_reg = (idx * 16) +
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IA_L2PMXEVCNTR_BASE;
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total_cnt = get_l2_indirect_reg(counter_reg);
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delta_l2_cnts[i] = total_cnt -
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per_cpu(previous_l2_cnts[i], cpu);
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per_cpu(previous_l2_cnts[i], cpu) =
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total_cnt;
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i++;
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}
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__entry->ctr0 = delta_l1_cnts[0];
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__entry->ctr1 = delta_l1_cnts[1];
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__entry->ctr2 = delta_l1_cnts[2];
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__entry->ctr3 = delta_l1_cnts[3];
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__entry->lctr0 = delta_l2_cnts[0];
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__entry->lctr1 = delta_l2_cnts[1];
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),
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TP_printk("prev_pid=%d, next_pid=%d, CCNTR: %u, CTR0: %u, CTR1: %u, CTR2: %u, CTR3: %u, L2CTR0: %u, L2CTR1: %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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__entry->lctr0, __entry->lctr1)
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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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