perf jevents: Remove jevents.c

Remove files and build rules.

Remove test for comparing with jevents.py as there is no longer a binary
to compare with.

Signed-off-by: Ian Rogers <[e-mail]>
Tested-by: John Garry <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Ananth Narayan <[e-mail]>
Cc: Andi Kleen <[e-mail]>
Cc: Andrew Kilroy <[e-mail]>
Cc: Caleb Biggers <[e-mail]>
Cc: Felix Fietkau <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: James Clark <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Kajol Jain <[e-mail]>
Cc: Kan Liang <[e-mail]>
Cc: Kshipra Bopardikar <[e-mail]>
Cc: Like Xu <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Mathieu Poirier <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Nick Forrington <[e-mail]>
Cc: Paul Clarke <[e-mail]>
Cc: Perry Taylor <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Qi Liu <[e-mail]>
Cc: Ravi Bangoria <[e-mail]>
Cc: Sandipan Das <[e-mail]>
Cc: Santosh Shukla <[e-mail]>
Cc: Stephane Eranian <[e-mail]>
Cc: Will Deacon <[e-mail]>
Cc: Xing Zhengjun <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/Makefile.perf

···
 
 PERF_IN := $(OUTPUT)perf-in.o
 
-JEVENTS       := $(OUTPUT)pmu-events/jevents
-JEVENTS_IN    := $(OUTPUT)pmu-events/jevents-in.o
-
 PMU_EVENTS_IN := $(OUTPUT)pmu-events/pmu-events-in.o
 export NO_JEVENTS
-
-export JEVENTS
 
 build := -f $(srctree)/tools/build/Makefile.build dir=. obj
 
 $(PERF_IN): prepare FORCE
 	$(Q)$(MAKE) $(build)=perf
 
-$(JEVENTS_IN): FORCE
-	$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=pmu-events obj=jevents
-
-$(JEVENTS): $(JEVENTS_IN)
-	$(QUIET_LINK)$(HOSTCC) $(JEVENTS_IN) -o $@
-
-JEVENTS_PY	:=  pmu-events/jevents.py
-JEVENTS_PY_TEST	:=  pmu-events/jevents-test.sh
-.PHONY: jevents-py-test
-jevents-py-test: $(JEVENTS)
-	$(Q)$(call echo-cmd,gen)$(JEVENTS_PY_TEST) $(JEVENTS) $(JEVENTS_PY) pmu-events/arch
-
-$(PMU_EVENTS_IN): $(JEVENTS) FORCE
+$(PMU_EVENTS_IN): FORCE
 	$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=pmu-events obj=pmu-events
 
 $(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(PMU_EVENTS_IN) $(LIBTRACEEVENT_DYNAMIC_LIST)
···
 	$(call QUIET_CLEAN, core-objs)  $(RM) $(LIBPERF_A) $(OUTPUT)perf-archive $(OUTPUT)perf-iostat $(LANG_BINDINGS)
 	$(Q)find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
 	$(Q)$(RM) $(OUTPUT).config-detected
-	$(call QUIET_CLEAN, core-progs) $(RM) $(ALL_PROGRAMS) perf perf-read-vdso32 perf-read-vdsox32 $(OUTPUT)pmu-events/jevents $(OUTPUT)$(LIBJVMTI).so
+	$(call QUIET_CLEAN, core-progs) $(RM) $(ALL_PROGRAMS) perf perf-read-vdso32 perf-read-vdsox32 $(OUTPUT)$(LIBJVMTI).so
 	$(call QUIET_CLEAN, core-gen)   $(RM)  *.spec *.pyc *.pyo */*.pyc */*.pyo $(OUTPUT)common-cmds.h TAGS tags cscope* $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)FEATURE-DUMP $(OUTPUT)util/*-bison* $(OUTPUT)util/*-flex* \
 		$(OUTPUT)util/intel-pt-decoder/inat-tables.c \
 		$(OUTPUT)tests/llvm-src-{base,kbuild,prologue,relocation}.c \

tools/perf/pmu-events/Build

···
-hostprogs := jevents
-
-jevents-y	+= json.o jsmn.o jevents.o
-HOSTCFLAGS_jevents.o	= -I$(srctree)/tools/include
 pmu-events-y	+= pmu-events.o
 JDIR		=  pmu-events/arch/$(SRCARCH)
 JSON		=  $(shell [ -d $(JDIR) ] &&				\

tools/perf/pmu-events/jevents-test.sh

···
-#!/bin/sh
-# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-# Validate that the legacy jevents and jevents.py produce identical output.
-set -e
-
-JEVENTS="$1"
-JEVENTS_PY="$2"
-ARCH_PATH="$3"
-JEVENTS_C_GENERATED=$(mktemp /tmp/jevents_c.XXXXX.c)
-JEVENTS_PY_GENERATED=$(mktemp /tmp/jevents_py.XXXXX.c)
-
-cleanup() {
-  rm "$JEVENTS_C_GENERATED" "$JEVENTS_PY_GENERATED"
-  trap - exit term int
-}
-trap cleanup exit term int
-
-for path in "$ARCH_PATH"/*
-do
-  arch=$(basename $path)
-  if [ "$arch" = "test" ]
-  then
-    continue
-  fi
-  echo "Checking architecture: $arch"
-  echo "Generating using jevents.c"
-  "$JEVENTS" "$arch" "$ARCH_PATH" "$JEVENTS_C_GENERATED"
-  echo "Generating using jevents.py"
-  "$JEVENTS_PY" "$arch" "$ARCH_PATH" "$JEVENTS_PY_GENERATED"
-  echo "Diffing"
-  diff -u "$JEVENTS_C_GENERATED" "$JEVENTS_PY_GENERATED"
-done
-cleanup

tools/perf/pmu-events/jevents.c

···
-#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;
-}

tools/perf/pmu-events/jsmn.c

···
-/*
- * Copyright (c) 2010 Serge A. Zaitsev
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * Slightly modified by AK to not assume 0 terminated input.
- */
-
-#include <stdlib.h>
-#include "jsmn.h"
-#define JSMN_STRICT
-
-/*
- * Allocates a fresh unused token from the token pool.
- */
-static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser,
-				   jsmntok_t *tokens, size_t num_tokens)
-{
-	jsmntok_t *tok;
-
-	if ((unsigned)parser->toknext >= num_tokens)
-		return NULL;
-	tok = &tokens[parser->toknext++];
-	tok->start = tok->end = -1;
-	tok->size = 0;
-	return tok;
-}
-
-/*
- * Fills token type and boundaries.
- */
-static void jsmn_fill_token(jsmntok_t *token, jsmntype_t type,
-			    int start, int end)
-{
-	token->type = type;
-	token->start = start;
-	token->end = end;
-	token->size = 0;
-}
-
-/*
- * Fills next available token with JSON primitive.
- */
-static jsmnerr_t jsmn_parse_primitive(jsmn_parser *parser, const char *js,
-				      size_t len,
-				      jsmntok_t *tokens, size_t num_tokens)
-{
-	jsmntok_t *token;
-	int start;
-
-	start = parser->pos;
-
-	for (; parser->pos < len; parser->pos++) {
-		switch (js[parser->pos]) {
-#ifndef JSMN_STRICT
-		/*
-		 * In strict mode primitive must be followed by ","
-		 * or "}" or "]"
-		 */
-		case ':':
-#endif
-		case '\t':
-		case '\r':
-		case '\n':
-		case ' ':
-		case ',':
-		case ']':
-		case '}':
-			goto found;
-		default:
-			break;
-		}
-		if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
-			parser->pos = start;
-			return JSMN_ERROR_INVAL;
-		}
-	}
-#ifdef JSMN_STRICT
-	/*
-	 * In strict mode primitive must be followed by a
-	 * comma/object/array.
-	 */
-	parser->pos = start;
-	return JSMN_ERROR_PART;
-#endif
-
-found:
-	token = jsmn_alloc_token(parser, tokens, num_tokens);
-	if (token == NULL) {
-		parser->pos = start;
-		return JSMN_ERROR_NOMEM;
-	}
-	jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
-	parser->pos--; /* parent sees closing brackets */
-	return JSMN_SUCCESS;
-}
-
-/*
- * Fills next token with JSON string.
- */
-static jsmnerr_t jsmn_parse_string(jsmn_parser *parser, const char *js,
-				   size_t len,
-				   jsmntok_t *tokens, size_t num_tokens)
-{
-	jsmntok_t *token;
-	int start = parser->pos;
-
-	/* Skip starting quote */
-	parser->pos++;
-
-	for (; parser->pos < len; parser->pos++) {
-		char c = js[parser->pos];
-
-		/* Quote: end of string */
-		if (c == '\"') {
-			token = jsmn_alloc_token(parser, tokens, num_tokens);
-			if (token == NULL) {
-				parser->pos = start;
-				return JSMN_ERROR_NOMEM;
-			}
-			jsmn_fill_token(token, JSMN_STRING, start+1,
-					parser->pos);
-			return JSMN_SUCCESS;
-		}
-
-		/* Backslash: Quoted symbol expected */
-		if (c == '\\') {
-			parser->pos++;
-			switch (js[parser->pos]) {
-				/* Allowed escaped symbols */
-			case '\"':
-			case '/':
-			case '\\':
-			case 'b':
-			case 'f':
-			case 'r':
-			case 'n':
-			case 't':
-				break;
-				/* Allows escaped symbol \uXXXX */
-			case 'u':
-				/* TODO */
-				break;
-				/* Unexpected symbol */
-			default:
-				parser->pos = start;
-				return JSMN_ERROR_INVAL;
-			}
-		}
-	}
-	parser->pos = start;
-	return JSMN_ERROR_PART;
-}
-
-/*
- * Parse JSON string and fill tokens.
- */
-jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
-		     jsmntok_t *tokens, unsigned int num_tokens)
-{
-	jsmnerr_t r;
-	int i;
-	jsmntok_t *token;
-#ifdef JSMN_STRICT
-	/*
-	 * Keeps track of whether a new object/list/primitive is expected. New items are only
-	 * allowed after an opening brace, comma or colon. A closing brace after a comma is not
-	 * valid JSON.
-	 */
-	int expecting_item = 1;
-#endif
-
-	for (; parser->pos < len; parser->pos++) {
-		char c;
-		jsmntype_t type;
-
-		c = js[parser->pos];
-		switch (c) {
-		case '{':
-		case '[':
-#ifdef JSMN_STRICT
-			if (!expecting_item)
-				return JSMN_ERROR_INVAL;
-#endif
-			token = jsmn_alloc_token(parser, tokens, num_tokens);
-			if (token == NULL)
-				return JSMN_ERROR_NOMEM;
-			if (parser->toksuper != -1)
-				tokens[parser->toksuper].size++;
-			token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
-			token->start = parser->pos;
-			parser->toksuper = parser->toknext - 1;
-			break;
-		case '}':
-		case ']':
-#ifdef JSMN_STRICT
-			if (expecting_item)
-				return JSMN_ERROR_INVAL;
-#endif
-			type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
-			for (i = parser->toknext - 1; i >= 0; i--) {
-				token = &tokens[i];
-				if (token->start != -1 && token->end == -1) {
-					if (token->type != type)
-						return JSMN_ERROR_INVAL;
-					parser->toksuper = -1;
-					token->end = parser->pos + 1;
-					break;
-				}
-			}
-			/* Error if unmatched closing bracket */
-			if (i == -1)
-				return JSMN_ERROR_INVAL;
-			for (; i >= 0; i--) {
-				token = &tokens[i];
-				if (token->start != -1 && token->end == -1) {
-					parser->toksuper = i;
-					break;
-				}
-			}
-			break;
-		case '\"':
-#ifdef JSMN_STRICT
-			if (!expecting_item)
-				return JSMN_ERROR_INVAL;
-			expecting_item = 0;
-#endif
-			r = jsmn_parse_string(parser, js, len, tokens,
-					      num_tokens);
-			if (r < 0)
-				return r;
-			if (parser->toksuper != -1)
-				tokens[parser->toksuper].size++;
-			break;
-		case '\t':
-		case '\r':
-		case '\n':
-		case ' ':
-			break;
-#ifdef JSMN_STRICT
-		case ':':
-		case ',':
-			if (expecting_item)
-				return JSMN_ERROR_INVAL;
-			expecting_item = 1;
-			break;
-			/*
-			 * In strict mode primitives are:
-			 * numbers and booleans.
-			 */
-		case '-':
-		case '0':
-		case '1':
-		case '2':
-		case '3':
-		case '4':
-		case '5':
-		case '6':
-		case '7':
-		case '8':
-		case '9':
-		case 't':
-		case 'f':
-		case 'n':
-#else
-		case ':':
-		case ',':
-			break;
-			/*
-			 * In non-strict mode every unquoted value
-			 * is a primitive.
-			 */
-			/*FALL THROUGH */
-		default:
-#endif
-
-#ifdef JSMN_STRICT
-			if (!expecting_item)
-				return JSMN_ERROR_INVAL;
-			expecting_item = 0;
-#endif
-			r = jsmn_parse_primitive(parser, js, len, tokens,
-						 num_tokens);
-			if (r < 0)
-				return r;
-			if (parser->toksuper != -1)
-				tokens[parser->toksuper].size++;
-			break;
-
-#ifdef JSMN_STRICT
-			/* Unexpected char in strict mode */
-		default:
-			return JSMN_ERROR_INVAL;
-#endif
-		}
-	}
-
-	for (i = parser->toknext - 1; i >= 0; i--) {
-		/* Unmatched opened object or array */
-		if (tokens[i].start != -1 && tokens[i].end == -1)
-			return JSMN_ERROR_PART;
-	}
-
-#ifdef JSMN_STRICT
-	return expecting_item ? JSMN_ERROR_INVAL : JSMN_SUCCESS;
-#else
-	return JSMN_SUCCESS;
-#endif
-}
-
-/*
- * Creates a new parser based over a given  buffer with an array of tokens
- * available.
- */
-void jsmn_init(jsmn_parser *parser)
-{
-	parser->pos = 0;
-	parser->toknext = 0;
-	parser->toksuper = -1;
-}
-
-const char *jsmn_strerror(jsmnerr_t err)
-{
-	switch (err) {
-	case JSMN_ERROR_NOMEM:
-		return "No enough tokens";
-	case JSMN_ERROR_INVAL:
-		return "Invalid character inside JSON string";
-	case JSMN_ERROR_PART:
-		return "The string is not a full JSON packet, more bytes expected";
-	case JSMN_SUCCESS:
-		return "Success";
-	default:
-		return "Unknown json error";
-	}
-}

tools/perf/pmu-events/jsmn.h

···
-/* SPDX-License-Identifier: MIT */
-#ifndef __JSMN_H_
-#define __JSMN_H_
-
-/*
- * JSON type identifier. Basic types are:
- *	o Object
- *	o Array
- *	o String
- *	o Other primitive: number, boolean (true/false) or null
- */
-typedef enum {
-	JSMN_PRIMITIVE = 0,
-	JSMN_OBJECT = 1,
-	JSMN_ARRAY = 2,
-	JSMN_STRING = 3
-} jsmntype_t;
-
-typedef enum {
-	/* Not enough tokens were provided */
-	JSMN_ERROR_NOMEM = -1,
-	/* Invalid character inside JSON string */
-	JSMN_ERROR_INVAL = -2,
-	/* The string is not a full JSON packet, more bytes expected */
-	JSMN_ERROR_PART = -3,
-	/* Everything was fine */
-	JSMN_SUCCESS = 0
-} jsmnerr_t;
-
-/*
- * JSON token description.
- * @param		type	type (object, array, string etc.)
- * @param		start	start position in JSON data string
- * @param		end		end position in JSON data string
- */
-typedef struct {
-	jsmntype_t type;
-	int start;
-	int end;
-	int size;
-} jsmntok_t;
-
-/*
- * JSON parser. Contains an array of token blocks available. Also stores
- * the string being parsed now and current position in that string
- */
-typedef struct {
-	unsigned int pos; /* offset in the JSON string */
-	int toknext; /* next token to allocate */
-	int toksuper; /* superior token node, e.g parent object or array */
-} jsmn_parser;
-
-/*
- * Create JSON parser over an array of tokens
- */
-void jsmn_init(jsmn_parser *parser);
-
-/*
- * Run JSON parser. It parses a JSON data string into and array of tokens,
- * each describing a single JSON object.
- */
-jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js,
-		     size_t len,
-		     jsmntok_t *tokens, unsigned int num_tokens);
-
-const char *jsmn_strerror(jsmnerr_t err);
-
-#endif /* __JSMN_H_ */

tools/perf/pmu-events/json.c

···
-/* Parse JSON files using the JSMN parser. */
-
-/*
- * 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 <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include "jsmn.h"
-#include "json.h"
-#include <linux/kernel.h>
-
-
-static char *mapfile(const char *fn, size_t *size)
-{
-	unsigned ps = sysconf(_SC_PAGESIZE);
-	struct stat st;
-	char *map = NULL;
-	int err;
-	int fd = open(fn, O_RDONLY);
-
-	if (fd < 0 && verbose > 0 && fn) {
-		pr_err("Error opening events file '%s': %s\n", fn,
-				strerror(errno));
-	}
-
-	if (fd < 0)
-		return NULL;
-	err = fstat(fd, &st);
-	if (err < 0)
-		goto out;
-	*size = st.st_size;
-	map = mmap(NULL,
-		   (st.st_size + ps - 1) & ~(ps - 1),
-		   PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
-	if (map == MAP_FAILED)
-		map = NULL;
-out:
-	close(fd);
-	return map;
-}
-
-static void unmapfile(char *map, size_t size)
-{
-	unsigned ps = sysconf(_SC_PAGESIZE);
-	munmap(map, roundup(size, ps));
-}
-
-/*
- * Parse json file using jsmn. Return array of tokens,
- * and mapped file. Caller needs to free array.
- */
-jsmntok_t *parse_json(const char *fn, char **map, size_t *size, int *len)
-{
-	jsmn_parser parser;
-	jsmntok_t *tokens;
-	jsmnerr_t res;
-	unsigned sz;
-
-	*map = mapfile(fn, size);
-	if (!*map)
-		return NULL;
-	/* Heuristic */
-	sz = *size * 16;
-	tokens = malloc(sz);
-	if (!tokens)
-		goto error;
-	jsmn_init(&parser);
-	res = jsmn_parse(&parser, *map, *size, tokens,
-			 sz / sizeof(jsmntok_t));
-	if (res != JSMN_SUCCESS) {
-		pr_err("%s: json error %s\n", fn, jsmn_strerror(res));
-		goto error_free;
-	}
-	if (len)
-		*len = parser.toknext;
-	return tokens;
-error_free:
-	free(tokens);
-error:
-	unmapfile(*map, *size);
-	return NULL;
-}
-
-void free_json(char *map, size_t size, jsmntok_t *tokens)
-{
-	free(tokens);
-	unmapfile(map, size);
-}
-
-static int countchar(char *map, char c, int end)
-{
-	int i;
-	int count = 0;
-	for (i = 0; i < end; i++)
-		if (map[i] == c)
-			count++;
-	return count;
-}
-
-/* Return line number of a jsmn token */
-int json_line(char *map, jsmntok_t *t)
-{
-	return countchar(map, '\n', t->start) + 1;
-}
-
-static const char * const jsmn_types[] = {
-	[JSMN_PRIMITIVE] = "primitive",
-	[JSMN_ARRAY] = "array",
-	[JSMN_OBJECT] = "object",
-	[JSMN_STRING] = "string"
-};
-
-#define LOOKUP(a, i) ((i) < (sizeof(a)/sizeof(*(a))) ? ((a)[i]) : "?")
-
-/* Return type name of a jsmn token */
-const char *json_name(jsmntok_t *t)
-{
-	return LOOKUP(jsmn_types, t->type);
-}
-
-int json_len(jsmntok_t *t)
-{
-	return t->end - t->start;
-}
-
-/* Is string t equal to s? */
-int json_streq(char *map, jsmntok_t *t, const char *s)
-{
-	unsigned len = json_len(t);
-	return len == strlen(s) && !strncasecmp(map + t->start, s, len);
-}

tools/perf/pmu-events/json.h

···
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef JSON_H
-#define JSON_H 1
-
-#include "jsmn.h"
-
-jsmntok_t *parse_json(const char *fn, char **map, size_t *size, int *len);
-void free_json(char *map, size_t size, jsmntok_t *tokens);
-int json_line(char *map, jsmntok_t *t);
-const char *json_name(jsmntok_t *t);
-int json_streq(char *map, jsmntok_t *t, const char *s);
-int json_len(jsmntok_t *t);
-
-extern int verbose;
-
-#include <stdbool.h>
-
-extern int eprintf(int level, int var, const char *fmt, ...);
-#define pr_fmt(fmt)	fmt
-
-#define pr_err(fmt, ...) \
-	eprintf(0, verbose, pr_fmt(fmt), ##__VA_ARGS__)
-
-#define pr_info(fmt, ...) \
-	eprintf(1, verbose, pr_fmt(fmt), ##__VA_ARGS__)
-
-#define pr_debug(fmt, ...) \
-	eprintf(2, verbose, pr_fmt(fmt), ##__VA_ARGS__)
-
-#ifndef roundup
-#define roundup(x, y) (                                \
-{                                                      \
-        const typeof(y) __y = y;                       \
-        (((x) + (__y - 1)) / __y) * __y;               \
-}                                                      \
-)
-#endif
-
-#endif