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1313 lines
30 KiB
1313 lines
30 KiB
#define _XOPEN_SOURCE 500 /* needed for nftw() */ |
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#define _GNU_SOURCE /* needed for asprintf() */ |
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/* Parse event JSON files */ |
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|
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/* |
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* Copyright (c) 2014, Intel Corporation |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <errno.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include <unistd.h> |
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#include <stdarg.h> |
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#include <libgen.h> |
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#include <limits.h> |
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#include <dirent.h> |
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#include <sys/time.h> /* getrlimit */ |
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#include <sys/resource.h> /* getrlimit */ |
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#include <ftw.h> |
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#include <sys/stat.h> |
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#include <linux/list.h> |
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#include "jsmn.h" |
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#include "json.h" |
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#include "pmu-events.h" |
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int verbose; |
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char *prog; |
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struct json_event { |
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char *name; |
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char *compat; |
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char *event; |
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char *desc; |
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char *long_desc; |
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char *pmu; |
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char *unit; |
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char *perpkg; |
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char *aggr_mode; |
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char *metric_expr; |
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char *metric_name; |
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char *metric_group; |
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char *deprecated; |
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char *metric_constraint; |
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}; |
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enum aggr_mode_class convert(const char *aggr_mode) |
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{ |
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if (!strcmp(aggr_mode, "PerCore")) |
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return PerCore; |
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else if (!strcmp(aggr_mode, "PerChip")) |
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return PerChip; |
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pr_err("%s: Wrong AggregationMode value '%s'\n", prog, aggr_mode); |
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return -1; |
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} |
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typedef int (*func)(void *data, struct json_event *je); |
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static LIST_HEAD(sys_event_tables); |
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struct sys_event_table { |
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struct list_head list; |
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char *soc_id; |
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}; |
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static void free_sys_event_tables(void) |
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{ |
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struct sys_event_table *et, *next; |
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list_for_each_entry_safe(et, next, &sys_event_tables, list) { |
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free(et->soc_id); |
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free(et); |
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} |
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} |
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int eprintf(int level, int var, const char *fmt, ...) |
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{ |
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int ret; |
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va_list args; |
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|
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if (var < level) |
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return 0; |
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va_start(args, fmt); |
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ret = vfprintf(stderr, fmt, args); |
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va_end(args); |
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return ret; |
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} |
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static void addfield(char *map, char **dst, const char *sep, |
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const char *a, jsmntok_t *bt) |
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{ |
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unsigned int len = strlen(a) + 1 + strlen(sep); |
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int olen = *dst ? strlen(*dst) : 0; |
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int blen = bt ? json_len(bt) : 0; |
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char *out; |
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out = realloc(*dst, len + olen + blen); |
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if (!out) { |
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/* Don't add field in this case */ |
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return; |
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} |
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*dst = out; |
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if (!olen) |
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*(*dst) = 0; |
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else |
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strcat(*dst, sep); |
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strcat(*dst, a); |
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if (bt) |
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strncat(*dst, map + bt->start, blen); |
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} |
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static void fixname(char *s) |
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{ |
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for (; *s; s++) |
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*s = tolower(*s); |
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} |
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static void fixdesc(char *s) |
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{ |
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char *e = s + strlen(s); |
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|
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/* Remove trailing dots that look ugly in perf list */ |
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--e; |
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while (e >= s && isspace(*e)) |
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--e; |
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if (*e == '.') |
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*e = 0; |
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} |
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|
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/* Add escapes for '\' so they are proper C strings. */ |
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static char *fixregex(char *s) |
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{ |
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int len = 0; |
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int esc_count = 0; |
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char *fixed = NULL; |
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char *p, *q; |
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|
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/* Count the number of '\' in string */ |
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for (p = s; *p; p++) { |
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++len; |
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if (*p == '\\') |
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++esc_count; |
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} |
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if (esc_count == 0) |
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return s; |
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/* allocate space for a new string */ |
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fixed = (char *) malloc(len + esc_count + 1); |
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if (!fixed) |
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return NULL; |
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/* copy over the characters */ |
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q = fixed; |
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for (p = s; *p; p++) { |
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if (*p == '\\') { |
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*q = '\\'; |
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++q; |
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} |
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*q = *p; |
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++q; |
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} |
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*q = '\0'; |
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return fixed; |
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} |
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static struct msrmap { |
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const char *num; |
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const char *pname; |
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} msrmap[] = { |
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{ "0x3F6", "ldlat=" }, |
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{ "0x1A6", "offcore_rsp=" }, |
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{ "0x1A7", "offcore_rsp=" }, |
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{ "0x3F7", "frontend=" }, |
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{ NULL, NULL } |
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}; |
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static struct field { |
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const char *field; |
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const char *kernel; |
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} fields[] = { |
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{ "UMask", "umask=" }, |
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{ "CounterMask", "cmask=" }, |
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{ "Invert", "inv=" }, |
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{ "AnyThread", "any=" }, |
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{ "EdgeDetect", "edge=" }, |
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{ "SampleAfterValue", "period=" }, |
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{ "FCMask", "fc_mask=" }, |
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{ "PortMask", "ch_mask=" }, |
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{ NULL, NULL } |
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}; |
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static void cut_comma(char *map, jsmntok_t *newval) |
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{ |
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int i; |
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|
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/* Cut off everything after comma */ |
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for (i = newval->start; i < newval->end; i++) { |
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if (map[i] == ',') |
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newval->end = i; |
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} |
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} |
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static int match_field(char *map, jsmntok_t *field, int nz, |
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char **event, jsmntok_t *val) |
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{ |
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struct field *f; |
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jsmntok_t newval = *val; |
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for (f = fields; f->field; f++) |
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if (json_streq(map, field, f->field) && nz) { |
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cut_comma(map, &newval); |
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addfield(map, event, ",", f->kernel, &newval); |
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return 1; |
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} |
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return 0; |
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} |
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static struct msrmap *lookup_msr(char *map, jsmntok_t *val) |
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{ |
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jsmntok_t newval = *val; |
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static bool warned; |
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int i; |
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cut_comma(map, &newval); |
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for (i = 0; msrmap[i].num; i++) |
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if (json_streq(map, &newval, msrmap[i].num)) |
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return &msrmap[i]; |
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if (!warned) { |
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warned = true; |
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pr_err("%s: Unknown MSR in event file %.*s\n", prog, |
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json_len(val), map + val->start); |
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} |
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return NULL; |
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} |
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static struct map { |
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const char *json; |
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const char *perf; |
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} unit_to_pmu[] = { |
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{ "CBO", "uncore_cbox" }, |
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{ "QPI LL", "uncore_qpi" }, |
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{ "SBO", "uncore_sbox" }, |
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{ "iMPH-U", "uncore_arb" }, |
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{ "CPU-M-CF", "cpum_cf" }, |
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{ "CPU-M-SF", "cpum_sf" }, |
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{ "UPI LL", "uncore_upi" }, |
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{ "hisi_sccl,ddrc", "hisi_sccl,ddrc" }, |
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{ "hisi_sccl,hha", "hisi_sccl,hha" }, |
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{ "hisi_sccl,l3c", "hisi_sccl,l3c" }, |
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/* it's not realistic to keep adding these, we need something more scalable ... */ |
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{ "imx8_ddr", "imx8_ddr" }, |
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{ "L3PMC", "amd_l3" }, |
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{ "DFPMC", "amd_df" }, |
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{ "cpu_core", "cpu_core" }, |
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{ "cpu_atom", "cpu_atom" }, |
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{} |
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}; |
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static const char *field_to_perf(struct map *table, char *map, jsmntok_t *val) |
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{ |
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int i; |
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for (i = 0; table[i].json; i++) { |
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if (json_streq(map, val, table[i].json)) |
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return table[i].perf; |
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} |
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return NULL; |
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} |
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#define EXPECT(e, t, m) do { if (!(e)) { \ |
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jsmntok_t *loc = (t); \ |
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if (!(t)->start && (t) > tokens) \ |
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loc = (t) - 1; \ |
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pr_err("%s:%d: " m ", got %s\n", fn, \ |
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json_line(map, loc), \ |
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json_name(t)); \ |
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err = -EIO; \ |
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goto out_free; \ |
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} } while (0) |
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static char *topic; |
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static char *get_topic(void) |
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{ |
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char *tp; |
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int i; |
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/* tp is free'd in process_one_file() */ |
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i = asprintf(&tp, "%s", topic); |
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if (i < 0) { |
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pr_info("%s: asprintf() error %s\n", prog); |
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return NULL; |
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} |
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for (i = 0; i < (int) strlen(tp); i++) { |
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char c = tp[i]; |
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if (c == '-') |
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tp[i] = ' '; |
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else if (c == '.') { |
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tp[i] = '\0'; |
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break; |
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} |
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} |
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return tp; |
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} |
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static int add_topic(char *bname) |
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{ |
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free(topic); |
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topic = strdup(bname); |
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if (!topic) { |
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pr_info("%s: strdup() error %s for file %s\n", prog, |
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strerror(errno), bname); |
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return -ENOMEM; |
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} |
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return 0; |
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} |
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struct perf_entry_data { |
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FILE *outfp; |
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char *topic; |
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}; |
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static int close_table; |
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static void print_events_table_prefix(FILE *fp, const char *tblname) |
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{ |
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fprintf(fp, "struct pmu_event %s[] = {\n", tblname); |
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close_table = 1; |
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} |
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static int print_events_table_entry(void *data, struct json_event *je) |
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{ |
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struct perf_entry_data *pd = data; |
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FILE *outfp = pd->outfp; |
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char *topic = pd->topic; |
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/* |
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* TODO: Remove formatting chars after debugging to reduce |
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* string lengths. |
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*/ |
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fprintf(outfp, "{\n"); |
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|
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if (je->name) |
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fprintf(outfp, "\t.name = \"%s\",\n", je->name); |
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if (je->event) |
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fprintf(outfp, "\t.event = \"%s\",\n", je->event); |
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fprintf(outfp, "\t.desc = \"%s\",\n", je->desc); |
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if (je->compat) |
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fprintf(outfp, "\t.compat = \"%s\",\n", je->compat); |
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fprintf(outfp, "\t.topic = \"%s\",\n", topic); |
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if (je->long_desc && je->long_desc[0]) |
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fprintf(outfp, "\t.long_desc = \"%s\",\n", je->long_desc); |
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if (je->pmu) |
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fprintf(outfp, "\t.pmu = \"%s\",\n", je->pmu); |
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if (je->unit) |
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fprintf(outfp, "\t.unit = \"%s\",\n", je->unit); |
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if (je->perpkg) |
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fprintf(outfp, "\t.perpkg = \"%s\",\n", je->perpkg); |
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if (je->aggr_mode) |
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fprintf(outfp, "\t.aggr_mode = \"%d\",\n", convert(je->aggr_mode)); |
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if (je->metric_expr) |
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fprintf(outfp, "\t.metric_expr = \"%s\",\n", je->metric_expr); |
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if (je->metric_name) |
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fprintf(outfp, "\t.metric_name = \"%s\",\n", je->metric_name); |
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if (je->metric_group) |
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fprintf(outfp, "\t.metric_group = \"%s\",\n", je->metric_group); |
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if (je->deprecated) |
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fprintf(outfp, "\t.deprecated = \"%s\",\n", je->deprecated); |
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if (je->metric_constraint) |
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fprintf(outfp, "\t.metric_constraint = \"%s\",\n", je->metric_constraint); |
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fprintf(outfp, "},\n"); |
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return 0; |
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} |
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struct event_struct { |
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struct list_head list; |
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char *name; |
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char *event; |
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char *compat; |
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char *desc; |
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char *long_desc; |
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char *pmu; |
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char *unit; |
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char *perpkg; |
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char *aggr_mode; |
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char *metric_expr; |
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char *metric_name; |
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char *metric_group; |
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char *deprecated; |
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char *metric_constraint; |
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}; |
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#define ADD_EVENT_FIELD(field) do { if (je->field) { \ |
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es->field = strdup(je->field); \ |
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if (!es->field) \ |
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goto out_free; \ |
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} } while (0) |
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|
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#define FREE_EVENT_FIELD(field) free(es->field) |
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|
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#define TRY_FIXUP_FIELD(field) do { if (es->field && !je->field) {\ |
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je->field = strdup(es->field); \ |
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if (!je->field) \ |
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return -ENOMEM; \ |
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} } while (0) |
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|
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#define FOR_ALL_EVENT_STRUCT_FIELDS(op) do { \ |
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op(name); \ |
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op(event); \ |
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op(desc); \ |
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op(long_desc); \ |
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op(pmu); \ |
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op(unit); \ |
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op(perpkg); \ |
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op(aggr_mode); \ |
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op(metric_expr); \ |
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op(metric_name); \ |
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op(metric_group); \ |
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op(deprecated); \ |
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} while (0) |
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static LIST_HEAD(arch_std_events); |
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|
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static void free_arch_std_events(void) |
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{ |
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struct event_struct *es, *next; |
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list_for_each_entry_safe(es, next, &arch_std_events, list) { |
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FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD); |
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list_del_init(&es->list); |
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free(es); |
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} |
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} |
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static int save_arch_std_events(void *data, struct json_event *je) |
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{ |
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struct event_struct *es; |
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|
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es = malloc(sizeof(*es)); |
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if (!es) |
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return -ENOMEM; |
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memset(es, 0, sizeof(*es)); |
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FOR_ALL_EVENT_STRUCT_FIELDS(ADD_EVENT_FIELD); |
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list_add_tail(&es->list, &arch_std_events); |
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return 0; |
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out_free: |
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FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD); |
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free(es); |
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return -ENOMEM; |
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} |
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static void print_events_table_suffix(FILE *outfp) |
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{ |
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fprintf(outfp, "{\n"); |
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|
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fprintf(outfp, "\t.name = 0,\n"); |
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fprintf(outfp, "\t.event = 0,\n"); |
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fprintf(outfp, "\t.desc = 0,\n"); |
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|
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fprintf(outfp, "},\n"); |
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fprintf(outfp, "};\n"); |
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close_table = 0; |
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} |
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|
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static struct fixed { |
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const char *name; |
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const char *event; |
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} fixed[] = { |
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{ "inst_retired.any", "event=0xc0,period=2000003" }, |
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{ "inst_retired.any_p", "event=0xc0,period=2000003" }, |
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{ "cpu_clk_unhalted.ref", "event=0x0,umask=0x03,period=2000003" }, |
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{ "cpu_clk_unhalted.thread", "event=0x3c,period=2000003" }, |
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{ "cpu_clk_unhalted.core", "event=0x3c,period=2000003" }, |
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{ "cpu_clk_unhalted.thread_any", "event=0x3c,any=1,period=2000003" }, |
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{ NULL, NULL}, |
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}; |
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|
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/* |
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* Handle different fixed counter encodings between JSON and perf. |
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*/ |
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static char *real_event(const char *name, char *event) |
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{ |
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int i; |
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|
|
if (!name) |
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return NULL; |
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|
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for (i = 0; fixed[i].name; i++) |
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if (!strcasecmp(name, fixed[i].name)) |
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return (char *)fixed[i].event; |
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return event; |
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} |
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|
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static int |
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try_fixup(const char *fn, char *arch_std, struct json_event *je, char **event) |
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{ |
|
/* try to find matching event from arch standard values */ |
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struct event_struct *es; |
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|
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list_for_each_entry(es, &arch_std_events, list) { |
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if (!strcmp(arch_std, es->name)) { |
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FOR_ALL_EVENT_STRUCT_FIELDS(TRY_FIXUP_FIELD); |
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*event = je->event; |
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return 0; |
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} |
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} |
|
|
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pr_err("%s: could not find matching %s for %s\n", |
|
prog, arch_std, fn); |
|
return -1; |
|
} |
|
|
|
/* Call func with each event in the json file */ |
|
static int json_events(const char *fn, |
|
int (*func)(void *data, struct json_event *je), |
|
void *data) |
|
{ |
|
int err; |
|
size_t size; |
|
jsmntok_t *tokens, *tok; |
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int i, j, len; |
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char *map; |
|
char buf[128]; |
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|
|
if (!fn) |
|
return -ENOENT; |
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|
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tokens = parse_json(fn, &map, &size, &len); |
|
if (!tokens) |
|
return -EIO; |
|
EXPECT(tokens->type == JSMN_ARRAY, tokens, "expected top level array"); |
|
tok = tokens + 1; |
|
for (i = 0; i < tokens->size; i++) { |
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char *event = NULL; |
|
char *extra_desc = NULL; |
|
char *filter = NULL; |
|
struct json_event je = {}; |
|
char *arch_std = NULL; |
|
unsigned long long eventcode = 0; |
|
struct msrmap *msr = NULL; |
|
jsmntok_t *msrval = NULL; |
|
jsmntok_t *precise = NULL; |
|
jsmntok_t *obj = tok++; |
|
|
|
EXPECT(obj->type == JSMN_OBJECT, obj, "expected object"); |
|
for (j = 0; j < obj->size; j += 2) { |
|
jsmntok_t *field, *val; |
|
int nz; |
|
char *s; |
|
|
|
field = tok + j; |
|
EXPECT(field->type == JSMN_STRING, tok + j, |
|
"Expected field name"); |
|
val = tok + j + 1; |
|
EXPECT(val->type == JSMN_STRING, tok + j + 1, |
|
"Expected string value"); |
|
|
|
nz = !json_streq(map, val, "0"); |
|
if (match_field(map, field, nz, &event, val)) { |
|
/* ok */ |
|
} else if (json_streq(map, field, "EventCode")) { |
|
char *code = NULL; |
|
addfield(map, &code, "", "", val); |
|
eventcode |= strtoul(code, NULL, 0); |
|
free(code); |
|
} else if (json_streq(map, field, "ExtSel")) { |
|
char *code = NULL; |
|
addfield(map, &code, "", "", val); |
|
eventcode |= strtoul(code, NULL, 0) << 21; |
|
free(code); |
|
} else if (json_streq(map, field, "EventName")) { |
|
addfield(map, &je.name, "", "", val); |
|
} else if (json_streq(map, field, "Compat")) { |
|
addfield(map, &je.compat, "", "", val); |
|
} else if (json_streq(map, field, "BriefDescription")) { |
|
addfield(map, &je.desc, "", "", val); |
|
fixdesc(je.desc); |
|
} else if (json_streq(map, field, |
|
"PublicDescription")) { |
|
addfield(map, &je.long_desc, "", "", val); |
|
fixdesc(je.long_desc); |
|
} else if (json_streq(map, field, "PEBS") && nz) { |
|
precise = val; |
|
} else if (json_streq(map, field, "MSRIndex") && nz) { |
|
msr = lookup_msr(map, val); |
|
} else if (json_streq(map, field, "MSRValue")) { |
|
msrval = val; |
|
} else if (json_streq(map, field, "Errata") && |
|
!json_streq(map, val, "null")) { |
|
addfield(map, &extra_desc, ". ", |
|
" Spec update: ", val); |
|
} else if (json_streq(map, field, "Data_LA") && nz) { |
|
addfield(map, &extra_desc, ". ", |
|
" Supports address when precise", |
|
NULL); |
|
} else if (json_streq(map, field, "Unit")) { |
|
const char *ppmu; |
|
|
|
ppmu = field_to_perf(unit_to_pmu, map, val); |
|
if (ppmu) { |
|
je.pmu = strdup(ppmu); |
|
} else { |
|
if (!je.pmu) |
|
je.pmu = strdup("uncore_"); |
|
addfield(map, &je.pmu, "", "", val); |
|
for (s = je.pmu; *s; s++) |
|
*s = tolower(*s); |
|
} |
|
addfield(map, &je.desc, ". ", "Unit: ", NULL); |
|
addfield(map, &je.desc, "", je.pmu, NULL); |
|
addfield(map, &je.desc, "", " ", NULL); |
|
} else if (json_streq(map, field, "Filter")) { |
|
addfield(map, &filter, "", "", val); |
|
} else if (json_streq(map, field, "ScaleUnit")) { |
|
addfield(map, &je.unit, "", "", val); |
|
} else if (json_streq(map, field, "PerPkg")) { |
|
addfield(map, &je.perpkg, "", "", val); |
|
} else if (json_streq(map, field, "AggregationMode")) { |
|
addfield(map, &je.aggr_mode, "", "", val); |
|
} else if (json_streq(map, field, "Deprecated")) { |
|
addfield(map, &je.deprecated, "", "", val); |
|
} else if (json_streq(map, field, "MetricName")) { |
|
addfield(map, &je.metric_name, "", "", val); |
|
} else if (json_streq(map, field, "MetricGroup")) { |
|
addfield(map, &je.metric_group, "", "", val); |
|
} else if (json_streq(map, field, "MetricConstraint")) { |
|
addfield(map, &je.metric_constraint, "", "", val); |
|
} else if (json_streq(map, field, "MetricExpr")) { |
|
addfield(map, &je.metric_expr, "", "", val); |
|
for (s = je.metric_expr; *s; s++) |
|
*s = tolower(*s); |
|
} else if (json_streq(map, field, "ArchStdEvent")) { |
|
addfield(map, &arch_std, "", "", val); |
|
for (s = arch_std; *s; s++) |
|
*s = tolower(*s); |
|
} |
|
/* ignore unknown fields */ |
|
} |
|
if (precise && je.desc && !strstr(je.desc, "(Precise Event)")) { |
|
if (json_streq(map, precise, "2")) |
|
addfield(map, &extra_desc, " ", |
|
"(Must be precise)", NULL); |
|
else |
|
addfield(map, &extra_desc, " ", |
|
"(Precise event)", NULL); |
|
} |
|
snprintf(buf, sizeof buf, "event=%#llx", eventcode); |
|
addfield(map, &event, ",", buf, NULL); |
|
if (je.desc && extra_desc) |
|
addfield(map, &je.desc, " ", extra_desc, NULL); |
|
if (je.long_desc && extra_desc) |
|
addfield(map, &je.long_desc, " ", extra_desc, NULL); |
|
if (filter) |
|
addfield(map, &event, ",", filter, NULL); |
|
if (msr != NULL) |
|
addfield(map, &event, ",", msr->pname, msrval); |
|
if (je.name) |
|
fixname(je.name); |
|
|
|
if (arch_std) { |
|
/* |
|
* An arch standard event is referenced, so try to |
|
* fixup any unassigned values. |
|
*/ |
|
err = try_fixup(fn, arch_std, &je, &event); |
|
if (err) |
|
goto free_strings; |
|
} |
|
je.event = real_event(je.name, event); |
|
err = func(data, &je); |
|
free_strings: |
|
free(event); |
|
free(je.desc); |
|
free(je.name); |
|
free(je.compat); |
|
free(je.long_desc); |
|
free(extra_desc); |
|
free(je.pmu); |
|
free(filter); |
|
free(je.perpkg); |
|
free(je.aggr_mode); |
|
free(je.deprecated); |
|
free(je.unit); |
|
free(je.metric_expr); |
|
free(je.metric_name); |
|
free(je.metric_group); |
|
free(je.metric_constraint); |
|
free(arch_std); |
|
|
|
if (err) |
|
break; |
|
tok += j; |
|
} |
|
EXPECT(tok - tokens == len, tok, "unexpected objects at end"); |
|
err = 0; |
|
out_free: |
|
free_json(map, size, tokens); |
|
return err; |
|
} |
|
|
|
static char *file_name_to_table_name(char *fname) |
|
{ |
|
unsigned int i; |
|
int n; |
|
int c; |
|
char *tblname; |
|
|
|
/* |
|
* Ensure tablename starts with alphabetic character. |
|
* Derive rest of table name from basename of the JSON file, |
|
* replacing hyphens and stripping out .json suffix. |
|
*/ |
|
n = asprintf(&tblname, "pme_%s", fname); |
|
if (n < 0) { |
|
pr_info("%s: asprintf() error %s for file %s\n", prog, |
|
strerror(errno), fname); |
|
return NULL; |
|
} |
|
|
|
for (i = 0; i < strlen(tblname); i++) { |
|
c = tblname[i]; |
|
|
|
if (c == '-' || c == '/') |
|
tblname[i] = '_'; |
|
else if (c == '.') { |
|
tblname[i] = '\0'; |
|
break; |
|
} else if (!isalnum(c) && c != '_') { |
|
pr_err("%s: Invalid character '%c' in file name %s\n", |
|
prog, c, basename(fname)); |
|
free(tblname); |
|
tblname = NULL; |
|
break; |
|
} |
|
} |
|
|
|
return tblname; |
|
} |
|
|
|
static bool is_sys_dir(char *fname) |
|
{ |
|
size_t len = strlen(fname), len2 = strlen("/sys"); |
|
|
|
if (len2 > len) |
|
return false; |
|
return !strcmp(fname+len-len2, "/sys"); |
|
} |
|
|
|
static void print_mapping_table_prefix(FILE *outfp) |
|
{ |
|
fprintf(outfp, "struct pmu_events_map pmu_events_map[] = {\n"); |
|
} |
|
|
|
static void print_mapping_table_suffix(FILE *outfp) |
|
{ |
|
/* |
|
* Print the terminating, NULL entry. |
|
*/ |
|
fprintf(outfp, "{\n"); |
|
fprintf(outfp, "\t.cpuid = 0,\n"); |
|
fprintf(outfp, "\t.version = 0,\n"); |
|
fprintf(outfp, "\t.type = 0,\n"); |
|
fprintf(outfp, "\t.table = 0,\n"); |
|
fprintf(outfp, "},\n"); |
|
|
|
/* and finally, the closing curly bracket for the struct */ |
|
fprintf(outfp, "};\n"); |
|
} |
|
|
|
static void print_mapping_test_table(FILE *outfp) |
|
{ |
|
/* |
|
* Print the terminating, NULL entry. |
|
*/ |
|
fprintf(outfp, "{\n"); |
|
fprintf(outfp, "\t.cpuid = \"testcpu\",\n"); |
|
fprintf(outfp, "\t.version = \"v1\",\n"); |
|
fprintf(outfp, "\t.type = \"core\",\n"); |
|
fprintf(outfp, "\t.table = pme_test_soc_cpu,\n"); |
|
fprintf(outfp, "},\n"); |
|
} |
|
|
|
static void print_system_event_mapping_table_prefix(FILE *outfp) |
|
{ |
|
fprintf(outfp, "\nstruct pmu_sys_events pmu_sys_event_tables[] = {"); |
|
} |
|
|
|
static void print_system_event_mapping_table_suffix(FILE *outfp) |
|
{ |
|
fprintf(outfp, "\n\t{\n\t\t.table = 0\n\t},"); |
|
fprintf(outfp, "\n};\n"); |
|
} |
|
|
|
static int process_system_event_tables(FILE *outfp) |
|
{ |
|
struct sys_event_table *sys_event_table; |
|
|
|
print_system_event_mapping_table_prefix(outfp); |
|
|
|
list_for_each_entry(sys_event_table, &sys_event_tables, list) { |
|
fprintf(outfp, "\n\t{\n\t\t.table = %s,\n\t\t.name = \"%s\",\n\t},", |
|
sys_event_table->soc_id, |
|
sys_event_table->soc_id); |
|
} |
|
|
|
print_system_event_mapping_table_suffix(outfp); |
|
|
|
return 0; |
|
} |
|
|
|
static int process_mapfile(FILE *outfp, char *fpath) |
|
{ |
|
int n = 16384; |
|
FILE *mapfp; |
|
char *save = NULL; |
|
char *line, *p; |
|
int line_num; |
|
char *tblname; |
|
int ret = 0; |
|
|
|
pr_info("%s: Processing mapfile %s\n", prog, fpath); |
|
|
|
line = malloc(n); |
|
if (!line) |
|
return -1; |
|
|
|
mapfp = fopen(fpath, "r"); |
|
if (!mapfp) { |
|
pr_info("%s: Error %s opening %s\n", prog, strerror(errno), |
|
fpath); |
|
free(line); |
|
return -1; |
|
} |
|
|
|
print_mapping_table_prefix(outfp); |
|
|
|
/* Skip first line (header) */ |
|
p = fgets(line, n, mapfp); |
|
if (!p) |
|
goto out; |
|
|
|
line_num = 1; |
|
while (1) { |
|
char *cpuid, *version, *type, *fname; |
|
|
|
line_num++; |
|
p = fgets(line, n, mapfp); |
|
if (!p) |
|
break; |
|
|
|
if (line[0] == '#' || line[0] == '\n') |
|
continue; |
|
|
|
if (line[strlen(line)-1] != '\n') { |
|
/* TODO Deal with lines longer than 16K */ |
|
pr_info("%s: Mapfile %s: line %d too long, aborting\n", |
|
prog, fpath, line_num); |
|
ret = -1; |
|
goto out; |
|
} |
|
line[strlen(line)-1] = '\0'; |
|
|
|
cpuid = fixregex(strtok_r(p, ",", &save)); |
|
version = strtok_r(NULL, ",", &save); |
|
fname = strtok_r(NULL, ",", &save); |
|
type = strtok_r(NULL, ",", &save); |
|
|
|
tblname = file_name_to_table_name(fname); |
|
fprintf(outfp, "{\n"); |
|
fprintf(outfp, "\t.cpuid = \"%s\",\n", cpuid); |
|
fprintf(outfp, "\t.version = \"%s\",\n", version); |
|
fprintf(outfp, "\t.type = \"%s\",\n", type); |
|
|
|
/* |
|
* CHECK: We can't use the type (eg "core") field in the |
|
* table name. For us to do that, we need to somehow tweak |
|
* the other caller of file_name_to_table(), process_json() |
|
* to determine the type. process_json() file has no way |
|
* of knowing these are "core" events unless file name has |
|
* core in it. If filename has core in it, we can safely |
|
* ignore the type field here also. |
|
*/ |
|
fprintf(outfp, "\t.table = %s\n", tblname); |
|
fprintf(outfp, "},\n"); |
|
} |
|
|
|
out: |
|
print_mapping_test_table(outfp); |
|
print_mapping_table_suffix(outfp); |
|
fclose(mapfp); |
|
free(line); |
|
return ret; |
|
} |
|
|
|
/* |
|
* If we fail to locate/process JSON and map files, create a NULL mapping |
|
* table. This would at least allow perf to build even if we can't find/use |
|
* the aliases. |
|
*/ |
|
static void create_empty_mapping(const char *output_file) |
|
{ |
|
FILE *outfp; |
|
|
|
pr_info("%s: Creating empty pmu_events_map[] table\n", prog); |
|
|
|
/* Truncate file to clear any partial writes to it */ |
|
outfp = fopen(output_file, "w"); |
|
if (!outfp) { |
|
perror("fopen()"); |
|
_Exit(1); |
|
} |
|
|
|
fprintf(outfp, "#include \"pmu-events/pmu-events.h\"\n"); |
|
print_mapping_table_prefix(outfp); |
|
print_mapping_table_suffix(outfp); |
|
print_system_event_mapping_table_prefix(outfp); |
|
print_system_event_mapping_table_suffix(outfp); |
|
fclose(outfp); |
|
} |
|
|
|
static int get_maxfds(void) |
|
{ |
|
struct rlimit rlim; |
|
|
|
if (getrlimit(RLIMIT_NOFILE, &rlim) == 0) |
|
return min(rlim.rlim_max / 2, (rlim_t)512); |
|
|
|
return 512; |
|
} |
|
|
|
/* |
|
* nftw() doesn't let us pass an argument to the processing function, |
|
* so use a global variables. |
|
*/ |
|
static FILE *eventsfp; |
|
static char *mapfile; |
|
|
|
static int is_leaf_dir(const char *fpath) |
|
{ |
|
DIR *d; |
|
struct dirent *dir; |
|
int res = 1; |
|
|
|
d = opendir(fpath); |
|
if (!d) |
|
return 0; |
|
|
|
while ((dir = readdir(d)) != NULL) { |
|
if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) |
|
continue; |
|
|
|
if (dir->d_type == DT_DIR) { |
|
res = 0; |
|
break; |
|
} else if (dir->d_type == DT_UNKNOWN) { |
|
char path[PATH_MAX]; |
|
struct stat st; |
|
|
|
sprintf(path, "%s/%s", fpath, dir->d_name); |
|
if (stat(path, &st)) |
|
break; |
|
|
|
if (S_ISDIR(st.st_mode)) { |
|
res = 0; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
closedir(d); |
|
|
|
return res; |
|
} |
|
|
|
static int is_json_file(const char *name) |
|
{ |
|
const char *suffix; |
|
|
|
if (strlen(name) < 5) |
|
return 0; |
|
|
|
suffix = name + strlen(name) - 5; |
|
|
|
if (strncmp(suffix, ".json", 5) == 0) |
|
return 1; |
|
return 0; |
|
} |
|
|
|
static int preprocess_arch_std_files(const char *fpath, const struct stat *sb, |
|
int typeflag, struct FTW *ftwbuf) |
|
{ |
|
int level = ftwbuf->level; |
|
int is_file = typeflag == FTW_F; |
|
|
|
if (level == 1 && is_file && is_json_file(fpath)) |
|
return json_events(fpath, save_arch_std_events, (void *)sb); |
|
|
|
return 0; |
|
} |
|
|
|
static int process_one_file(const char *fpath, const struct stat *sb, |
|
int typeflag, struct FTW *ftwbuf) |
|
{ |
|
char *tblname, *bname; |
|
int is_dir = typeflag == FTW_D; |
|
int is_file = typeflag == FTW_F; |
|
int level = ftwbuf->level; |
|
int err = 0; |
|
|
|
if (level >= 2 && is_dir) { |
|
int count = 0; |
|
/* |
|
* For level 2 directory, bname will include parent name, |
|
* like vendor/platform. So search back from platform dir |
|
* to find this. |
|
* Something similar for level 3 directory, but we're a PMU |
|
* category folder, like vendor/platform/cpu. |
|
*/ |
|
bname = (char *) fpath + ftwbuf->base - 2; |
|
for (;;) { |
|
if (*bname == '/') |
|
count++; |
|
if (count == level - 1) |
|
break; |
|
bname--; |
|
} |
|
bname++; |
|
} else |
|
bname = (char *) fpath + ftwbuf->base; |
|
|
|
pr_debug("%s %d %7jd %-20s %s\n", |
|
is_file ? "f" : is_dir ? "d" : "x", |
|
level, sb->st_size, bname, fpath); |
|
|
|
/* base dir or too deep */ |
|
if (level == 0 || level > 4) |
|
return 0; |
|
|
|
|
|
/* model directory, reset topic */ |
|
if ((level == 1 && is_dir && is_leaf_dir(fpath)) || |
|
(level >= 2 && is_dir && is_leaf_dir(fpath))) { |
|
if (close_table) |
|
print_events_table_suffix(eventsfp); |
|
|
|
/* |
|
* Drop file name suffix. Replace hyphens with underscores. |
|
* Fail if file name contains any alphanum characters besides |
|
* underscores. |
|
*/ |
|
tblname = file_name_to_table_name(bname); |
|
if (!tblname) { |
|
pr_info("%s: Error determining table name for %s\n", prog, |
|
bname); |
|
return -1; |
|
} |
|
|
|
if (is_sys_dir(bname)) { |
|
struct sys_event_table *sys_event_table; |
|
|
|
sys_event_table = malloc(sizeof(*sys_event_table)); |
|
if (!sys_event_table) |
|
return -1; |
|
|
|
sys_event_table->soc_id = strdup(tblname); |
|
if (!sys_event_table->soc_id) { |
|
free(sys_event_table); |
|
return -1; |
|
} |
|
list_add_tail(&sys_event_table->list, |
|
&sys_event_tables); |
|
} |
|
|
|
print_events_table_prefix(eventsfp, tblname); |
|
return 0; |
|
} |
|
|
|
/* |
|
* Save the mapfile name for now. We will process mapfile |
|
* after processing all JSON files (so we can write out the |
|
* mapping table after all PMU events tables). |
|
* |
|
*/ |
|
if (level == 1 && is_file) { |
|
if (!strcmp(bname, "mapfile.csv")) { |
|
mapfile = strdup(fpath); |
|
return 0; |
|
} |
|
if (is_json_file(bname)) |
|
pr_debug("%s: ArchStd json is preprocessed %s\n", prog, fpath); |
|
else |
|
pr_info("%s: Ignoring file %s\n", prog, fpath); |
|
return 0; |
|
} |
|
|
|
/* |
|
* If the file name does not have a .json extension, |
|
* ignore it. It could be a readme.txt for instance. |
|
*/ |
|
if (is_file) { |
|
if (!is_json_file(bname)) { |
|
pr_info("%s: Ignoring file without .json suffix %s\n", prog, |
|
fpath); |
|
return 0; |
|
} |
|
} |
|
|
|
if (level > 1 && add_topic(bname)) |
|
return -ENOMEM; |
|
|
|
/* |
|
* Assume all other files are JSON files. |
|
* |
|
* If mapfile refers to 'power7_core.json', we create a table |
|
* named 'power7_core'. Any inconsistencies between the mapfile |
|
* and directory tree could result in build failure due to table |
|
* names not being found. |
|
* |
|
* At least for now, be strict with processing JSON file names. |
|
* i.e. if JSON file name cannot be mapped to C-style table name, |
|
* fail. |
|
*/ |
|
if (is_file) { |
|
struct perf_entry_data data = { |
|
.topic = get_topic(), |
|
.outfp = eventsfp, |
|
}; |
|
|
|
err = json_events(fpath, print_events_table_entry, &data); |
|
|
|
free(data.topic); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
#ifndef PATH_MAX |
|
#define PATH_MAX 4096 |
|
#endif |
|
|
|
/* |
|
* Starting in directory 'start_dirname', find the "mapfile.csv" and |
|
* the set of JSON files for the architecture 'arch'. |
|
* |
|
* From each JSON file, create a C-style "PMU events table" from the |
|
* JSON file (see struct pmu_event). |
|
* |
|
* From the mapfile, create a mapping between the CPU revisions and |
|
* PMU event tables (see struct pmu_events_map). |
|
* |
|
* Write out the PMU events tables and the mapping table to pmu-event.c. |
|
*/ |
|
int main(int argc, char *argv[]) |
|
{ |
|
int rc, ret = 0, empty_map = 0; |
|
int maxfds; |
|
char ldirname[PATH_MAX]; |
|
const char *arch; |
|
const char *output_file; |
|
const char *start_dirname; |
|
char *err_string_ext = ""; |
|
struct stat stbuf; |
|
|
|
prog = basename(argv[0]); |
|
if (argc < 4) { |
|
pr_err("Usage: %s <arch> <starting_dir> <output_file>\n", prog); |
|
return 1; |
|
} |
|
|
|
arch = argv[1]; |
|
start_dirname = argv[2]; |
|
output_file = argv[3]; |
|
|
|
if (argc > 4) |
|
verbose = atoi(argv[4]); |
|
|
|
eventsfp = fopen(output_file, "w"); |
|
if (!eventsfp) { |
|
pr_err("%s Unable to create required file %s (%s)\n", |
|
prog, output_file, strerror(errno)); |
|
return 2; |
|
} |
|
|
|
sprintf(ldirname, "%s/%s", start_dirname, arch); |
|
|
|
/* If architecture does not have any event lists, bail out */ |
|
if (stat(ldirname, &stbuf) < 0) { |
|
pr_info("%s: Arch %s has no PMU event lists\n", prog, arch); |
|
empty_map = 1; |
|
goto err_close_eventsfp; |
|
} |
|
|
|
/* Include pmu-events.h first */ |
|
fprintf(eventsfp, "#include \"pmu-events/pmu-events.h\"\n"); |
|
|
|
/* |
|
* The mapfile allows multiple CPUids to point to the same JSON file, |
|
* so, not sure if there is a need for symlinks within the pmu-events |
|
* directory. |
|
* |
|
* For now, treat symlinks of JSON files as regular files and create |
|
* separate tables for each symlink (presumably, each symlink refers |
|
* to specific version of the CPU). |
|
*/ |
|
|
|
maxfds = get_maxfds(); |
|
rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0); |
|
if (rc) |
|
goto err_processing_std_arch_event_dir; |
|
|
|
rc = nftw(ldirname, process_one_file, maxfds, 0); |
|
if (rc) |
|
goto err_processing_dir; |
|
|
|
sprintf(ldirname, "%s/test", start_dirname); |
|
|
|
rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0); |
|
if (rc) |
|
goto err_processing_std_arch_event_dir; |
|
|
|
rc = nftw(ldirname, process_one_file, maxfds, 0); |
|
if (rc) |
|
goto err_processing_dir; |
|
|
|
if (close_table) |
|
print_events_table_suffix(eventsfp); |
|
|
|
if (!mapfile) { |
|
pr_info("%s: No CPU->JSON mapping?\n", prog); |
|
empty_map = 1; |
|
goto err_close_eventsfp; |
|
} |
|
|
|
rc = process_mapfile(eventsfp, mapfile); |
|
if (rc) { |
|
pr_info("%s: Error processing mapfile %s\n", prog, mapfile); |
|
/* Make build fail */ |
|
ret = 1; |
|
goto err_close_eventsfp; |
|
} |
|
|
|
rc = process_system_event_tables(eventsfp); |
|
fclose(eventsfp); |
|
if (rc) { |
|
ret = 1; |
|
goto err_out; |
|
} |
|
|
|
free_arch_std_events(); |
|
free_sys_event_tables(); |
|
free(mapfile); |
|
return 0; |
|
|
|
err_processing_std_arch_event_dir: |
|
err_string_ext = " for std arch event"; |
|
err_processing_dir: |
|
if (verbose) { |
|
pr_info("%s: Error walking file tree %s%s\n", prog, ldirname, |
|
err_string_ext); |
|
empty_map = 1; |
|
} else if (rc < 0) { |
|
ret = 1; |
|
} else { |
|
empty_map = 1; |
|
} |
|
err_close_eventsfp: |
|
fclose(eventsfp); |
|
if (empty_map) |
|
create_empty_mapping(output_file); |
|
err_out: |
|
free_arch_std_events(); |
|
free_sys_event_tables(); |
|
free(mapfile); |
|
return ret; |
|
}
|
|
|