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/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#if !defined(_PERF_TRACE_USER_H_) || defined(TRACE_HEADER_MULTI_READ)
#define _PERF_TRACE_USER_H_
#undef TRACE_SYSTEM
#define TRACE_SYSTEM perf_trace_counters
#include <linux/tracepoint.h>
#define CNTENSET_CC 0x80000000
#define NUM_L1_CTRS 4
TRACE_EVENT(perf_trace_user,
TP_PROTO(char *string, u32 cnten_val),
TP_ARGS(string, cnten_val),
TP_STRUCT__entry(
__field(u32, cctr)
__field(u32, ctr0)
__field(u32, ctr1)
__field(u32, ctr2)
__field(u32, ctr3)
__field(u32, lctr0)
__field(u32, lctr1)
__string(user_string, string)
),
TP_fast_assign(
u32 cnt;
u32 l1_cnts[NUM_L1_CTRS];
int i;
if (cnten_val & CNTENSET_CC) {
/* Read value */
asm volatile("mrs %0, pmccntr_el0" : "=r" (cnt));
__entry->cctr = cnt;
} else
__entry->cctr = 0;
for (i = 0; i < NUM_L1_CTRS; i++) {
if (cnten_val & (1 << i)) {
/* Select */
asm volatile("msr pmselr_el0, %0"
: : "r" (i));
isb();
/* Read value */
asm volatile("mrs %0, pmxevcntr_el0"
: "=r" (cnt));
l1_cnts[i] = cnt;
} else {
l1_cnts[i] = 0;
}
}
__entry->ctr0 = l1_cnts[0];
__entry->ctr1 = l1_cnts[1];
__entry->ctr2 = l1_cnts[2];
__entry->ctr3 = l1_cnts[3];
__entry->lctr0 = 0;
__entry->lctr1 = 0;
__assign_str(user_string, string);
),
TP_printk("CCNTR: %u, CTR0: %u, CTR1: %u, CTR2: %u, CTR3: %u, L2CTR0: %u, L2CTR1: %u, MSG=%s",
__entry->cctr, __entry->ctr0, __entry->ctr1,
__entry->ctr2, __entry->ctr3,
__entry->lctr0, __entry->lctr1,
__get_str(user_string)
)
);
#endif
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH ../../arch/arm64/kernel
#define TRACE_INCLUDE_FILE perf_trace_user
#include <trace/define_trace.h>
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