text: #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 <dirent.h>
  #include <sys/time.h>			/* getrlimit */
  #include <sys/resource.h>		/* getrlimit */
  #include <ftw.h>
  #include <sys/stat.h>
  #include "jsmn.h"
  #include "json.h"
  #include "jevents.h"
  
  #ifndef __maybe_unused
  #define __maybe_unused                  __attribute__((unused))
  #endif
  
  int verbose;
  char *prog;
  
  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;
  }
  
  __attribute__((weak)) char *get_cpu_str(void)
  {
  	return NULL;
  }
  
  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;
  }
  
  static struct msrmap {
  	const char *num;
  	const char *pname;
  } msrmap[] = {
  	{ "0x3F6", "ldlat=" },
  	{ "0x1A6", "offcore_rsp=" },
  	{ "0x1A7", "offcore_rsp=" },
  	{ "0x3F7", "frontend=" },
  	{ NULL, NULL }
  };
  
  static struct field {
  	const char *field;
  	const char *kernel;
  } fields[] = {
  	{ "EventCode",	"event=" },
  	{ "UMask",	"umask=" },
  	{ "CounterMask", "cmask=" },
  	{ "Invert",	"inv=" },
  	{ "AnyThread",	"any=" },
  	{ "EdgeDetect",	"edge=" },
  	{ "SampleAfterValue", "period=" },
  	{ 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 int match_field(char *map, jsmntok_t *field, int nz,
  		       char **event, jsmntok_t *val)
  {
  	struct field *f;
  	jsmntok_t newval = *val;
  
  	for (f = fields; f->field; f++)
  		if (json_streq(map, field, f->field) && nz) {
  			cut_comma(map, &newval);
  			addfield(map, event, ",", f->kernel, &newval);
  			return 1;
  		}
  	return 0;
  }
  
  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;
  }
  
  #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));				\
  	goto out_free;						\
  } } while (0)
  
  #define TOPIC_DEPTH 256
  static char *topic_array[TOPIC_DEPTH];
  static int   topic_level;
  
  static char *get_topic(void)
  {
  	char *tp_old, *tp = NULL;
  	int i;
  
  	for (i = 0; i < topic_level + 1; i++) {
  		int n;
  
  		tp_old = tp;
  		n = asprintf(&tp, "%s%s", tp ?: "", topic_array[i]);
  		if (n < 0) {
  			pr_info("%s: asprintf() error %s\n", prog);
  			return NULL;
  		}
  		free(tp_old);
  	}
  
  	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(int level, char *bname)
  {
  	char *topic;
  
  	level -= 2;
  
  	if (level >= TOPIC_DEPTH)
  		return -EINVAL;
  
  	topic = strdup(bname);
  	if (!topic) {
  		pr_info("%s: strdup() error %s for file %s\n", prog,
  				strerror(errno), bname);
  		return -ENOMEM;
  	}
  
  	free(topic_array[topic_level]);
  	topic_array[topic_level] = topic;
  	topic_level              = level;
  	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, "struct pmu_event %s[] = {\n", tblname);
  	close_table = 1;
  }
  
  static int print_events_table_entry(void *data, char *name, char *event,
  				    char *desc, char *long_desc)
  {
  	struct perf_entry_data *pd = data;
  	FILE *outfp = pd->outfp;
  	char *topic = pd->topic;
  
  	/*
  	 * TODO: Remove formatting chars after debugging to reduce
  	 *	 string lengths.
  	 */
  	fprintf(outfp, "{\n");
  
  	fprintf(outfp, "\t.name = \"%s\",\n", name);
  	fprintf(outfp, "\t.event = \"%s\",\n", event);
  	fprintf(outfp, "\t.desc = \"%s\",\n", desc);
  	fprintf(outfp, "\t.topic = \"%s\",\n", topic);
  	if (long_desc && long_desc[0])
  		fprintf(outfp, "\t.long_desc = \"%s\",\n", long_desc);
  
  	fprintf(outfp, "},\n");
  
  	return 0;
  }
  
  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;
  
  	for (i = 0; fixed[i].name; i++)
  		if (!strcasecmp(name, fixed[i].name))
  			return (char *)fixed[i].event;
  	return event;
  }
  
  /* Call func with each event in the json file */
  int json_events(const char *fn,
  	  int (*func)(void *data, char *name, char *event, char *desc,
  		      char *long_desc),
  	  void *data)
  {
  	int err = -EIO;
  	size_t size;
  	jsmntok_t *tokens, *tok;
  	int i, j, len;
  	char *map;
  
  	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, *desc = NULL, *name = NULL;
  		char *long_desc = NULL;
  		char *extra_desc = NULL;
  		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;
  
  			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, "EventName")) {
  				addfield(map, &name, "", "", val);
  			} else if (json_streq(map, field, "BriefDescription")) {
  				addfield(map, &desc, "", "", val);
  				fixdesc(desc);
  			} else if (json_streq(map, field,
  					     "PublicDescription")) {
  				addfield(map, &long_desc, "", "", val);
  				fixdesc(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);
  			}
  			/* ignore unknown fields */
  		}
  		if (precise && desc && !strstr(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 (desc && extra_desc)
  			addfield(map, &desc, " ", extra_desc, NULL);
  		if (long_desc && extra_desc)
  			addfield(map, &long_desc, " ", extra_desc, NULL);
  		if (msr != NULL)
  			addfield(map, &event, ",", msr->pname, msrval);
  		fixname(name);
  
  		err = func(data, name, real_event(name, event), desc, long_desc);
  		free(event);
  		free(desc);
  		free(name);
  		free(long_desc);
  		free(extra_desc);
  		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", basename(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 == '-')
  			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 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 int process_mapfile(FILE *outfp, char *fpath)
  {
  	int n = 16384;
  	FILE *mapfp;
  	char *save = NULL;
  	char *line, *p;
  	int line_num;
  	char *tblname;
  
  	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);
  		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);
  			return -1;
  		}
  		line[strlen(line)-1] = '\0';
  
  		cpuid = 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_table_suffix(outfp);
  	return 0;
  }
  
  /*
   * 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);
  	fclose(outfp);
  }
  
  static int get_maxfds(void)
  {
  	struct rlimit rlim;
  
  	if (getrlimit(RLIMIT_NOFILE, &rlim) == 0)
  		return min((int)rlim.rlim_max / 2, 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 process_one_file(const char *fpath, const struct stat *sb,
  			    int typeflag, struct FTW *ftwbuf)
  {
  	char *tblname, *bname  = (char *) fpath + ftwbuf->base;
  	int is_dir  = typeflag == FTW_D;
  	int is_file = typeflag == FTW_F;
  	int level   = ftwbuf->level;
  	int err = 0;
  
  	pr_debug("%s %d %7jd %-20s %s\n",
  		 is_file ? "f" : is_dir ? "d" : "x",
  		 level, sb->st_size, bname, fpath);
  
  	/* base dir */
  	if (level == 0)
  		return 0;
  
  	/* model directory, reset topic */
  	if (level == 1 && is_dir) {
  		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;
  		}
  
  		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).
  	 *
  	 * TODO: Allow for multiple mapfiles? Punt for now.
  	 */
  	if (level == 1 && is_file) {
  		if (!strncmp(bname, "mapfile.csv", 11)) {
  			if (mapfile) {
  				pr_info("%s: Many mapfiles? Using %s, ignoring %s\n",
  						prog, mapfile, fpath);
  			} else {
  				mapfile = strdup(fpath);
  			}
  			return 0;
  		}
  
  		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) {
  		char *suffix = bname + strlen(bname) - 5;
  
  		if (strncmp(suffix, ".json", 5)) {
  			pr_info("%s: Ignoring file without .json suffix %s\n", prog,
  				fpath);
  			return 0;
  		}
  	}
  
  	if (level > 1 && add_topic(level, 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.
  	 *
  	 * Atleast 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.
   *
   * If unable to process the JSON or arch files, create an empty mapping
   * table so we can continue to build/use  perf even if we cannot use the
   * PMU event aliases.
   */
  int main(int argc, char *argv[])
  {
  	int rc;
  	int maxfds;
  	char ldirname[PATH_MAX];
  
  	const char *arch;
  	const char *output_file;
  	const char *start_dirname;
  
  	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;
  	}
  
  	/* Include pmu-events.h first */
  	fprintf(eventsfp, "#include \"../../pmu-events/pmu-events.h\"\n");
  
  	sprintf(ldirname, "%s/%s", start_dirname, arch);
  
  	/*
  	 * 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();
  	mapfile = NULL;
  	rc = nftw(ldirname, process_one_file, maxfds, 0);
  	if (rc && verbose) {
  		pr_info("%s: Error walking file tree %s\n", prog, ldirname);
  		goto empty_map;
  	} else if (rc) {
  		goto empty_map;
  	}
  
  	if (close_table)
  		print_events_table_suffix(eventsfp);
  
  	if (!mapfile) {
  		pr_info("%s: No CPU->JSON mapping?\n", prog);
  		goto empty_map;
  	}
  
  	if (process_mapfile(eventsfp, mapfile)) {
  		pr_info("%s: Error processing mapfile %s\n", prog, mapfile);
  		goto empty_map;
  	}
  
  	return 0;
  
  empty_map:
  	fclose(eventsfp);
  	create_empty_mapping(output_file);
  	return 0;
  }
  