#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/list.h>
|
#include "jsmn.h"
|
#include "json.h"
|
#include "jevents.h"
|
|
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;
|
}
|
|
/* 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 struct field {
|
const char *field;
|
const char *kernel;
|
} fields[] = {
|
{ "UMask", "umask=" },
|
{ "CounterMask", "cmask=" },
|
{ "Invert", "inv=" },
|
{ "AnyThread", "any=" },
|
{ "EdgeDetect", "edge=" },
|
{ "SampleAfterValue", "period=" },
|
{ "FCMask", "fc_mask=" },
|
{ "PortMask", "ch_mask=" },
|
{ 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;
|
}
|
|
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" },
|
{}
|
};
|
|
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, "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,
|
char *pmu, char *unit, char *perpkg,
|
char *metric_expr,
|
char *metric_name, char *metric_group)
|
{
|
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");
|
|
if (name)
|
fprintf(outfp, "\t.name = \"%s\",\n", name);
|
if (event)
|
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);
|
if (pmu)
|
fprintf(outfp, "\t.pmu = \"%s\",\n", pmu);
|
if (unit)
|
fprintf(outfp, "\t.unit = \"%s\",\n", unit);
|
if (perpkg)
|
fprintf(outfp, "\t.perpkg = \"%s\",\n", perpkg);
|
if (metric_expr)
|
fprintf(outfp, "\t.metric_expr = \"%s\",\n", metric_expr);
|
if (metric_name)
|
fprintf(outfp, "\t.metric_name = \"%s\",\n", metric_name);
|
if (metric_group)
|
fprintf(outfp, "\t.metric_group = \"%s\",\n", metric_group);
|
fprintf(outfp, "},\n");
|
|
return 0;
|
}
|
|
struct event_struct {
|
struct list_head list;
|
char *name;
|
char *event;
|
char *desc;
|
char *long_desc;
|
char *pmu;
|
char *unit;
|
char *perpkg;
|
char *metric_expr;
|
char *metric_name;
|
char *metric_group;
|
};
|
|
#define ADD_EVENT_FIELD(field) do { if (field) { \
|
es->field = strdup(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 && !*field) {\
|
*field = strdup(es->field); \
|
if (!*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(metric_expr); \
|
op(metric_name); \
|
op(metric_group); \
|
} 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(&es->list);
|
free(es);
|
}
|
}
|
|
static int save_arch_std_events(void *data, char *name, char *event,
|
char *desc, char *long_desc, char *pmu,
|
char *unit, char *perpkg, char *metric_expr,
|
char *metric_name, char *metric_group)
|
{
|
struct event_struct *es;
|
struct stat *sb = data;
|
|
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, char **event, char **desc,
|
char **name, char **long_desc, char **pmu, char **filter,
|
char **perpkg, char **unit, char **metric_expr, char **metric_name,
|
char **metric_group, unsigned long long eventcode)
|
{
|
/* 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)) {
|
if (!eventcode && es->event) {
|
/* allow EventCode to be overridden */
|
free(*event);
|
*event = NULL;
|
}
|
FOR_ALL_EVENT_STRUCT_FIELDS(TRY_FIXUP_FIELD);
|
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 */
|
int json_events(const char *fn,
|
int (*func)(void *data, char *name, char *event, char *desc,
|
char *long_desc,
|
char *pmu, char *unit, char *perpkg,
|
char *metric_expr,
|
char *metric_name, char *metric_group),
|
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, *desc = NULL, *name = NULL;
|
char *long_desc = NULL;
|
char *extra_desc = NULL;
|
char *pmu = NULL;
|
char *filter = NULL;
|
char *perpkg = NULL;
|
char *unit = NULL;
|
char *metric_expr = NULL;
|
char *metric_name = NULL;
|
char *metric_group = NULL;
|
char *arch_std = NULL;
|
unsigned long long eventcode = 0;
|
struct msrmap *msr = NULL;
|
jsmntok_t *msrval = NULL;
|
jsmntok_t *precise = NULL;
|
jsmntok_t *obj = tok++;
|
|
EXPECT(obj->type == JSMN_OBJECT, obj, "expected object");
|
for (j = 0; j < obj->size; j += 2) {
|
jsmntok_t *field, *val;
|
int nz;
|
char *s;
|
|
field = tok + j;
|
EXPECT(field->type == JSMN_STRING, tok + j,
|
"Expected field name");
|
val = tok + j + 1;
|
EXPECT(val->type == JSMN_STRING, tok + j + 1,
|
"Expected string value");
|
|
nz = !json_streq(map, val, "0");
|
if (match_field(map, field, nz, &event, val)) {
|
/* ok */
|
} else if (json_streq(map, field, "EventCode")) {
|
char *code = NULL;
|
addfield(map, &code, "", "", val);
|
eventcode |= strtoul(code, NULL, 0);
|
free(code);
|
} else if (json_streq(map, field, "ExtSel")) {
|
char *code = NULL;
|
addfield(map, &code, "", "", val);
|
eventcode |= strtoul(code, NULL, 0) << 21;
|
free(code);
|
} else if (json_streq(map, field, "EventName")) {
|
addfield(map, &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);
|
} else if (json_streq(map, field, "Unit")) {
|
const char *ppmu;
|
|
ppmu = field_to_perf(unit_to_pmu, map, val);
|
if (ppmu) {
|
pmu = strdup(ppmu);
|
} else {
|
if (!pmu)
|
pmu = strdup("uncore_");
|
addfield(map, &pmu, "", "", val);
|
for (s = pmu; *s; s++)
|
*s = tolower(*s);
|
}
|
addfield(map, &desc, ". ", "Unit: ", NULL);
|
addfield(map, &desc, "", pmu, NULL);
|
addfield(map, &desc, "", " ", NULL);
|
} else if (json_streq(map, field, "Filter")) {
|
addfield(map, &filter, "", "", val);
|
} else if (json_streq(map, field, "ScaleUnit")) {
|
addfield(map, &unit, "", "", val);
|
} else if (json_streq(map, field, "PerPkg")) {
|
addfield(map, &perpkg, "", "", val);
|
} else if (json_streq(map, field, "MetricName")) {
|
addfield(map, &metric_name, "", "", val);
|
} else if (json_streq(map, field, "MetricGroup")) {
|
addfield(map, &metric_group, "", "", val);
|
} else if (json_streq(map, field, "MetricExpr")) {
|
addfield(map, &metric_expr, "", "", val);
|
for (s = metric_expr; *s; s++)
|
*s = tolower(*s);
|
} else if (json_streq(map, field, "ArchStdEvent")) {
|
addfield(map, &arch_std, "", "", val);
|
for (s = arch_std; *s; s++)
|
*s = tolower(*s);
|
}
|
/* ignore unknown fields */
|
}
|
if (precise && 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);
|
}
|
snprintf(buf, sizeof buf, "event=%#llx", eventcode);
|
addfield(map, &event, ",", buf, NULL);
|
if (desc && extra_desc)
|
addfield(map, &desc, " ", extra_desc, NULL);
|
if (long_desc && extra_desc)
|
addfield(map, &long_desc, " ", extra_desc, NULL);
|
if (filter)
|
addfield(map, &event, ",", filter, NULL);
|
if (msr != NULL)
|
addfield(map, &event, ",", msr->pname, msrval);
|
if (name)
|
fixname(name);
|
|
if (arch_std) {
|
/*
|
* An arch standard event is referenced, so try to
|
* fixup any unassigned values.
|
*/
|
err = try_fixup(fn, arch_std, &event, &desc, &name,
|
&long_desc, &pmu, &filter, &perpkg,
|
&unit, &metric_expr, &metric_name,
|
&metric_group, eventcode);
|
if (err)
|
goto free_strings;
|
}
|
err = func(data, name, real_event(name, event), desc, long_desc,
|
pmu, unit, perpkg, metric_expr, metric_name, metric_group);
|
free_strings:
|
free(event);
|
free(desc);
|
free(name);
|
free(long_desc);
|
free(extra_desc);
|
free(pmu);
|
free(filter);
|
free(perpkg);
|
free(unit);
|
free(metric_expr);
|
free(metric_name);
|
free(metric_group);
|
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 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;
|
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_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);
|
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) {
|
/*
|
* For level 2 directory, bname will include parent name,
|
* like vendor/platform. So search back from platform dir
|
* to find this.
|
*/
|
bname = (char *) fpath + ftwbuf->base - 2;
|
for (;;) {
|
if (*bname == '/')
|
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 > 3)
|
return 0;
|
|
|
/* model directory, reset topic */
|
if ((level == 1 && is_dir && is_leaf_dir(fpath)) ||
|
(level == 2 && 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).
|
*
|
*/
|
if (level == 1 && is_file) {
|
if (!strcmp(bname, "mapfile.csv")) {
|
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) {
|
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.
|
*
|
* 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.
|
*/
|
int main(int argc, char *argv[])
|
{
|
int rc, ret = 0;
|
int maxfds;
|
char ldirname[PATH_MAX];
|
const char *arch;
|
const char *output_file;
|
const char *start_dirname;
|
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);
|
goto empty_map;
|
}
|
|
/* 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();
|
mapfile = NULL;
|
rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0);
|
if (rc && verbose) {
|
pr_info("%s: Error preprocessing arch standard files %s\n",
|
prog, ldirname);
|
goto empty_map;
|
} else if (rc < 0) {
|
/* Make build fail */
|
fclose(eventsfp);
|
free_arch_std_events();
|
return 1;
|
} else if (rc) {
|
goto empty_map;
|
}
|
|
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 < 0) {
|
/* Make build fail */
|
fclose(eventsfp);
|
free_arch_std_events();
|
ret = 1;
|
goto out_free_mapfile;
|
} 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);
|
/* Make build fail */
|
fclose(eventsfp);
|
free_arch_std_events();
|
ret = 1;
|
}
|
|
|
goto out_free_mapfile;
|
|
empty_map:
|
fclose(eventsfp);
|
create_empty_mapping(output_file);
|
free_arch_std_events();
|
out_free_mapfile:
|
free(mapfile);
|
return ret;
|
}
|
