+++ /dev/null
-#define _XOPEN_SOURCE 500 /* needed for nftw() */
-#define _GNU_SOURCE /* needed for asprintf() */
-
-/* Parse event JSON files */
-
-/*
- * Copyright (c) 2014, Intel Corporation
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <ctype.h>
-#include <unistd.h>
-#include <stdarg.h>
-#include <libgen.h>
-#include <limits.h>
-#include <dirent.h>
-#include <sys/time.h> /* getrlimit */
-#include <sys/resource.h> /* getrlimit */
-#include <ftw.h>
-#include <sys/stat.h>
-#include <linux/compiler.h>
-#include <linux/list.h>
-#include "jsmn.h"
-#include "json.h"
-#include "pmu-events.h"
-
-int verbose;
-char *prog;
-
-struct json_event {
- char *name;
- char *compat;
- char *event;
- char *desc;
- char *long_desc;
- char *pmu;
- char *unit;
- char *perpkg;
- char *aggr_mode;
- char *metric_expr;
- char *metric_name;
- char *metric_group;
- char *deprecated;
- char *metric_constraint;
-};
-
-static enum aggr_mode_class convert(const char *aggr_mode)
-{
- if (!strcmp(aggr_mode, "PerCore"))
- return PerCore;
- else if (!strcmp(aggr_mode, "PerChip"))
- return PerChip;
-
- pr_err("%s: Wrong AggregationMode value '%s'\n", prog, aggr_mode);
- return -1;
-}
-
-static LIST_HEAD(sys_event_tables);
-
-struct sys_event_table {
- struct list_head list;
- char *soc_id;
-};
-
-static void free_sys_event_tables(void)
-{
- struct sys_event_table *et, *next;
-
- list_for_each_entry_safe(et, next, &sys_event_tables, list) {
- free(et->soc_id);
- free(et);
- }
-}
-
-int eprintf(int level, int var, const char *fmt, ...)
-{
-
- int ret;
- va_list args;
-
- if (var < level)
- return 0;
-
- va_start(args, fmt);
-
- ret = vfprintf(stderr, fmt, args);
-
- va_end(args);
-
- return ret;
-}
-
-static void addfield(char *map, char **dst, const char *sep,
- const char *a, jsmntok_t *bt)
-{
- unsigned int len = strlen(a) + 1 + strlen(sep);
- int olen = *dst ? strlen(*dst) : 0;
- int blen = bt ? json_len(bt) : 0;
- char *out;
-
- out = realloc(*dst, len + olen + blen);
- if (!out) {
- /* Don't add field in this case */
- return;
- }
- *dst = out;
-
- if (!olen)
- *(*dst) = 0;
- else
- strcat(*dst, sep);
- strcat(*dst, a);
- if (bt)
- strncat(*dst, map + bt->start, blen);
-}
-
-static void fixname(char *s)
-{
- for (; *s; s++)
- *s = tolower(*s);
-}
-
-static void fixdesc(char *s)
-{
- char *e = s + strlen(s);
-
- /* Remove trailing dots that look ugly in perf list */
- --e;
- while (e >= s && isspace(*e))
- --e;
- if (*e == '.')
- *e = 0;
-}
-
-/* Add escapes for '\' so they are proper C strings. */
-static char *fixregex(char *s)
-{
- int len = 0;
- int esc_count = 0;
- char *fixed = NULL;
- char *p, *q;
-
- /* Count the number of '\' in string */
- for (p = s; *p; p++) {
- ++len;
- if (*p == '\\')
- ++esc_count;
- }
-
- if (esc_count == 0)
- return s;
-
- /* allocate space for a new string */
- fixed = (char *) malloc(len + esc_count + 1);
- if (!fixed)
- return NULL;
-
- /* copy over the characters */
- q = fixed;
- for (p = s; *p; p++) {
- if (*p == '\\') {
- *q = '\\';
- ++q;
- }
- *q = *p;
- ++q;
- }
- *q = '\0';
- return fixed;
-}
-
-static struct msrmap {
- const char *num;
- const char *pname;
-} msrmap[] = {
- { "0x3F6", "ldlat=" },
- { "0x1A6", "offcore_rsp=" },
- { "0x1A7", "offcore_rsp=" },
- { "0x3F7", "frontend=" },
- { NULL, NULL }
-};
-
-static void cut_comma(char *map, jsmntok_t *newval)
-{
- int i;
-
- /* Cut off everything after comma */
- for (i = newval->start; i < newval->end; i++) {
- if (map[i] == ',')
- newval->end = i;
- }
-}
-
-static struct msrmap *lookup_msr(char *map, jsmntok_t *val)
-{
- jsmntok_t newval = *val;
- static bool warned;
- int i;
-
- cut_comma(map, &newval);
- for (i = 0; msrmap[i].num; i++)
- if (json_streq(map, &newval, msrmap[i].num))
- return &msrmap[i];
- if (!warned) {
- warned = true;
- pr_err("%s: Unknown MSR in event file %.*s\n", prog,
- json_len(val), map + val->start);
- }
- return NULL;
-}
-
-static struct map {
- const char *json;
- const char *perf;
-} unit_to_pmu[] = {
- { "CBO", "uncore_cbox" },
- { "QPI LL", "uncore_qpi" },
- { "SBO", "uncore_sbox" },
- { "iMPH-U", "uncore_arb" },
- { "CPU-M-CF", "cpum_cf" },
- { "CPU-M-SF", "cpum_sf" },
- { "UPI LL", "uncore_upi" },
- { "hisi_sicl,cpa", "hisi_sicl,cpa"},
- { "hisi_sccl,ddrc", "hisi_sccl,ddrc" },
- { "hisi_sccl,hha", "hisi_sccl,hha" },
- { "hisi_sccl,l3c", "hisi_sccl,l3c" },
- /* it's not realistic to keep adding these, we need something more scalable ... */
- { "imx8_ddr", "imx8_ddr" },
- { "L3PMC", "amd_l3" },
- { "DFPMC", "amd_df" },
- { "cpu_core", "cpu_core" },
- { "cpu_atom", "cpu_atom" },
- {}
-};
-
-static const char *field_to_perf(struct map *table, char *map, jsmntok_t *val)
-{
- int i;
-
- for (i = 0; table[i].json; i++) {
- if (json_streq(map, val, table[i].json))
- return table[i].perf;
- }
- return NULL;
-}
-
-#define EXPECT(e, t, m) do { if (!(e)) { \
- jsmntok_t *loc = (t); \
- if (!(t)->start && (t) > tokens) \
- loc = (t) - 1; \
- pr_err("%s:%d: " m ", got %s\n", fn, \
- json_line(map, loc), \
- json_name(t)); \
- err = -EIO; \
- goto out_free; \
-} } while (0)
-
-static char *topic;
-
-static char *get_topic(void)
-{
- char *tp;
- int i;
-
- /* tp is free'd in process_one_file() */
- i = asprintf(&tp, "%s", topic);
- if (i < 0) {
- pr_info("%s: asprintf() error %s\n", prog);
- return NULL;
- }
-
- for (i = 0; i < (int) strlen(tp); i++) {
- char c = tp[i];
-
- if (c == '-')
- tp[i] = ' ';
- else if (c == '.') {
- tp[i] = '\0';
- break;
- }
- }
-
- return tp;
-}
-
-static int add_topic(char *bname)
-{
- free(topic);
- topic = strdup(bname);
- if (!topic) {
- pr_info("%s: strdup() error %s for file %s\n", prog,
- strerror(errno), bname);
- return -ENOMEM;
- }
- return 0;
-}
-
-struct perf_entry_data {
- FILE *outfp;
- char *topic;
-};
-
-static int close_table;
-
-static void print_events_table_prefix(FILE *fp, const char *tblname)
-{
- fprintf(fp, "static const struct pmu_event %s[] = {\n", tblname);
- close_table = 1;
-}
-
-static int print_events_table_entry(void *data, struct json_event *je)
-{
- struct perf_entry_data *pd = data;
- FILE *outfp = pd->outfp;
- char *topic_local = pd->topic;
-
- /*
- * TODO: Remove formatting chars after debugging to reduce
- * string lengths.
- */
- fprintf(outfp, "{\n");
-
- if (je->name)
- fprintf(outfp, "\t.name = \"%s\",\n", je->name);
- if (je->event)
- fprintf(outfp, "\t.event = \"%s\",\n", je->event);
- fprintf(outfp, "\t.desc = \"%s\",\n", je->desc);
- if (je->compat)
- fprintf(outfp, "\t.compat = \"%s\",\n", je->compat);
- fprintf(outfp, "\t.topic = \"%s\",\n", topic_local);
- if (je->long_desc && je->long_desc[0])
- fprintf(outfp, "\t.long_desc = \"%s\",\n", je->long_desc);
- if (je->pmu)
- fprintf(outfp, "\t.pmu = \"%s\",\n", je->pmu);
- if (je->unit)
- fprintf(outfp, "\t.unit = \"%s\",\n", je->unit);
- if (je->perpkg)
- fprintf(outfp, "\t.perpkg = \"%s\",\n", je->perpkg);
- if (je->aggr_mode)
- fprintf(outfp, "\t.aggr_mode = \"%d\",\n", convert(je->aggr_mode));
- if (je->metric_expr)
- fprintf(outfp, "\t.metric_expr = \"%s\",\n", je->metric_expr);
- if (je->metric_name)
- fprintf(outfp, "\t.metric_name = \"%s\",\n", je->metric_name);
- if (je->metric_group)
- fprintf(outfp, "\t.metric_group = \"%s\",\n", je->metric_group);
- if (je->deprecated)
- fprintf(outfp, "\t.deprecated = \"%s\",\n", je->deprecated);
- if (je->metric_constraint)
- fprintf(outfp, "\t.metric_constraint = \"%s\",\n", je->metric_constraint);
- fprintf(outfp, "},\n");
-
- return 0;
-}
-
-struct event_struct {
- struct list_head list;
- char *name;
- char *event;
- char *compat;
- char *desc;
- char *long_desc;
- char *pmu;
- char *unit;
- char *perpkg;
- char *aggr_mode;
- char *metric_expr;
- char *metric_name;
- char *metric_group;
- char *deprecated;
- char *metric_constraint;
-};
-
-#define ADD_EVENT_FIELD(field) do { if (je->field) { \
- es->field = strdup(je->field); \
- if (!es->field) \
- goto out_free; \
-} } while (0)
-
-#define FREE_EVENT_FIELD(field) free(es->field)
-
-#define TRY_FIXUP_FIELD(field) do { if (es->field && !je->field) {\
- je->field = strdup(es->field); \
- if (!je->field) \
- return -ENOMEM; \
-} } while (0)
-
-#define FOR_ALL_EVENT_STRUCT_FIELDS(op) do { \
- op(name); \
- op(event); \
- op(desc); \
- op(long_desc); \
- op(pmu); \
- op(unit); \
- op(perpkg); \
- op(aggr_mode); \
- op(metric_expr); \
- op(metric_name); \
- op(metric_group); \
- op(deprecated); \
-} while (0)
-
-static LIST_HEAD(arch_std_events);
-
-static void free_arch_std_events(void)
-{
- struct event_struct *es, *next;
-
- list_for_each_entry_safe(es, next, &arch_std_events, list) {
- FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD);
- list_del_init(&es->list);
- free(es);
- }
-}
-
-static int save_arch_std_events(void *data __maybe_unused, struct json_event *je)
-{
- struct event_struct *es;
-
- es = malloc(sizeof(*es));
- if (!es)
- return -ENOMEM;
- memset(es, 0, sizeof(*es));
- FOR_ALL_EVENT_STRUCT_FIELDS(ADD_EVENT_FIELD);
- list_add_tail(&es->list, &arch_std_events);
- return 0;
-out_free:
- FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD);
- free(es);
- return -ENOMEM;
-}
-
-static void print_events_table_suffix(FILE *outfp)
-{
- fprintf(outfp, "{\n");
-
- fprintf(outfp, "\t.name = 0,\n");
- fprintf(outfp, "\t.event = 0,\n");
- fprintf(outfp, "\t.desc = 0,\n");
-
- fprintf(outfp, "},\n");
- fprintf(outfp, "};\n");
- close_table = 0;
-}
-
-static struct fixed {
- const char *name;
- const char *event;
-} fixed[] = {
- { "inst_retired.any", "event=0xc0,period=2000003" },
- { "inst_retired.any_p", "event=0xc0,period=2000003" },
- { "cpu_clk_unhalted.ref", "event=0x0,umask=0x03,period=2000003" },
- { "cpu_clk_unhalted.thread", "event=0x3c,period=2000003" },
- { "cpu_clk_unhalted.core", "event=0x3c,period=2000003" },
- { "cpu_clk_unhalted.thread_any", "event=0x3c,any=1,period=2000003" },
- { NULL, NULL},
-};
-
-/*
- * Handle different fixed counter encodings between JSON and perf.
- */
-static char *real_event(const char *name, char *event)
-{
- int i;
-
- if (!name)
- return NULL;
-
- for (i = 0; fixed[i].name; i++)
- if (!strcasecmp(name, fixed[i].name))
- return (char *)fixed[i].event;
- return event;
-}
-
-static int
-try_fixup(const char *fn, char *arch_std, struct json_event *je, char **event)
-{
- /* try to find matching event from arch standard values */
- struct event_struct *es;
-
- list_for_each_entry(es, &arch_std_events, list) {
- if (!strcmp(arch_std, es->name)) {
- FOR_ALL_EVENT_STRUCT_FIELDS(TRY_FIXUP_FIELD);
- *event = je->event;
- return 0;
- }
- }
-
- 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;
- int i, j, len;
- char *map;
- char buf[128];
-
- if (!fn)
- return -ENOENT;
-
- 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++) {
- char *event = NULL;
- char *extra_desc = NULL;
- char *filter = NULL;
- struct json_event je = {};
- char *arch_std = NULL;
- unsigned long long eventcode = 0;
- unsigned long long configcode = 0;
- struct msrmap *msr = NULL;
- jsmntok_t *msrval = NULL;
- jsmntok_t *precise = NULL;
- jsmntok_t *obj = tok++;
- bool configcode_present = false;
- char *umask = NULL;
- char *cmask = NULL;
- char *inv = NULL;
- char *any = NULL;
- char *edge = NULL;
- char *period = NULL;
- char *fc_mask = NULL;
- char *ch_mask = NULL;
-
- 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");
- /* match_field */
- if (json_streq(map, field, "UMask") && nz) {
- addfield(map, &umask, "", "umask=", val);
- } else if (json_streq(map, field, "CounterMask") && nz) {
- addfield(map, &cmask, "", "cmask=", val);
- } else if (json_streq(map, field, "Invert") && nz) {
- addfield(map, &inv, "", "inv=", val);
- } else if (json_streq(map, field, "AnyThread") && nz) {
- addfield(map, &any, "", "any=", val);
- } else if (json_streq(map, field, "EdgeDetect") && nz) {
- addfield(map, &edge, "", "edge=", val);
- } else if (json_streq(map, field, "SampleAfterValue") && nz) {
- addfield(map, &period, "", "period=", val);
- } else if (json_streq(map, field, "FCMask") && nz) {
- addfield(map, &fc_mask, "", "fc_mask=", val);
- } else if (json_streq(map, field, "PortMask") && nz) {
- addfield(map, &ch_mask, "", "ch_mask=", val);
- } 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, "ConfigCode")) {
- char *code = NULL;
- addfield(map, &code, "", "", val);
- configcode |= strtoul(code, NULL, 0);
- free(code);
- configcode_present = true;
- } else if (json_streq(map, field, "ExtSel")) {
- char *code = NULL;
- addfield(map, &code, "", "", val);
- eventcode |= strtoul(code, NULL, 0) << 8;
- 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);
- }
- } 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);
- } 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);
- }
- if (configcode_present)
- snprintf(buf, sizeof buf, "config=%#llx", configcode);
- else
- snprintf(buf, sizeof buf, "event=%#llx", eventcode);
- addfield(map, &event, ",", buf, NULL);
- if (any)
- addfield(map, &event, ",", any, NULL);
- if (ch_mask)
- addfield(map, &event, ",", ch_mask, NULL);
- if (cmask)
- addfield(map, &event, ",", cmask, NULL);
- if (edge)
- addfield(map, &event, ",", edge, NULL);
- if (fc_mask)
- addfield(map, &event, ",", fc_mask, NULL);
- if (inv)
- addfield(map, &event, ",", inv, NULL);
- if (period)
- addfield(map, &event, ",", period, NULL);
- if (umask)
- addfield(map, &event, ",", umask, 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 (je.pmu) {
- addfield(map, &je.desc, ". ", "Unit: ", NULL);
- addfield(map, &je.desc, "", je.pmu, NULL);
- addfield(map, &je.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(umask);
- free(cmask);
- free(inv);
- free(any);
- free(edge);
- free(period);
- free(fc_mask);
- free(ch_mask);
- 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, "const 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, "\nconst struct 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;
- const 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;
-}
projects / platform / kernel / linux-rpi.git / commitdiff