--all-user::
Configure all used events to run in user space.
+--ldload::
+ Specify desired latency for loads event.
+
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-report[1]
Dry run. With this option, --add and --del doesn't execute actual
adding and removal operations.
+--cache::
+ Cache the probes (with --add option). Any events which successfully added
+ are also stored in the cache file.
+
--max-probes=NUM::
Set the maximum number of probe points for an event. Default is 128.
hists__precompute(hists);
hists__output_resort(hists, NULL);
- hists__fprintf(hists, true, 0, 0, 0, stdout);
+ hists__fprintf(hists, true, 0, 0, 0, stdout,
+ symbol_conf.use_callchain);
}
static void data__fprintf(void)
}
static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
- struct perf_evsel *evsel __maybe_unused)
+ struct hists *hists __maybe_unused)
{
struct diff_hpp_fmt *dfmt =
container_of(fmt, struct diff_hpp_fmt, fmt);
static int hpp__width(struct perf_hpp_fmt *fmt,
struct perf_hpp *hpp __maybe_unused,
- struct perf_evsel *evsel __maybe_unused)
+ struct hists *hists __maybe_unused)
{
struct diff_hpp_fmt *dfmt =
container_of(fmt, struct diff_hpp_fmt, fmt);
OPT_CALLBACK('e', "event", &mem, "event",
"event selector. use 'perf mem record -e list' to list available events",
parse_record_events),
+ OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
OPT_INCR('v', "verbose", &verbose,
"be more verbose (show counter open errors, etc)"),
OPT_BOOLEAN('U', "--all-user", &all_user, "collect only user level data"),
"Enable symbol demangling"),
OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
"Enable kernel symbol demangling"),
+ OPT_BOOLEAN(0, "cache", &probe_conf.cache, "Manipulate probe cache"),
OPT_END()
};
int ret;
continue;
hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
- hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout);
+ hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout,
+ symbol_conf.use_callchain);
fprintf(stdout, "\n\n");
}
hists__output_recalc_col_len(hists, top->print_entries - printed);
putchar('\n');
hists__fprintf(hists, false, top->print_entries - printed, win_width,
- top->min_percent, stdout);
+ top->min_percent, stdout, symbol_conf.use_callchain);
}
static void prompt_integer(int *target, const char *msg)
$(call detected,CONFIG_LIBUNWIND_X86)
CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
LDFLAGS += -lunwind-x86
+ EXTLIBS_LIBUNWIND += -lunwind-x86
have_libunwind = 1
endif
$(call detected,CONFIG_LIBUNWIND_AARCH64)
CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
LDFLAGS += -lunwind-aarch64
+ EXTLIBS_LIBUNWIND += -lunwind-aarch64
have_libunwind = 1
$(call feature_check,libunwind-debug-frame-aarch64)
ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
CFLAGS += -DHAVE_LIBUNWIND_SUPPORT
CFLAGS += $(LIBUNWIND_CFLAGS)
LDFLAGS += $(LIBUNWIND_LDFLAGS)
+ EXTLIBS += $(EXTLIBS_LIBUNWIND)
endif
ifndef NO_LIBAUDIT
column++ < browser->b.horiz_scroll)
continue;
- ret = fmt->width(fmt, NULL, hists_to_evsel(browser->hists));
+ ret = fmt->width(fmt, NULL, browser->hists);
if (first) {
/* for folded sign */
if (perf_hpp__should_skip(fmt, hists) || column++ < browser->b.horiz_scroll)
continue;
- ret = fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists));
+ ret = fmt->header(fmt, &dummy_hpp, hists);
if (advance_hpp_check(&dummy_hpp, ret))
break;
if (column++ < browser->b.horiz_scroll)
continue;
- ret = fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists));
+ ret = fmt->header(fmt, &dummy_hpp, hists);
if (advance_hpp_check(&dummy_hpp, ret))
break;
}
first_col = false;
- ret = fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists));
+ ret = fmt->header(fmt, &dummy_hpp, hists);
dummy_hpp.buf[ret] = '\0';
start = trim(dummy_hpp.buf);
return ret;
}
-static void hist_browser__show_headers(struct hist_browser *browser)
+static void hists_browser__hierarchy_headers(struct hist_browser *browser)
{
char headers[1024];
- if (symbol_conf.report_hierarchy)
- hists_browser__scnprintf_hierarchy_headers(browser, headers,
- sizeof(headers));
- else
- hists_browser__scnprintf_headers(browser, headers,
- sizeof(headers));
+ hists_browser__scnprintf_hierarchy_headers(browser, headers,
+ sizeof(headers));
+
ui_browser__gotorc(&browser->b, 0, 0);
ui_browser__set_color(&browser->b, HE_COLORSET_ROOT);
ui_browser__write_nstring(&browser->b, headers, browser->b.width + 1);
}
+static void hists_browser__headers(struct hist_browser *browser)
+{
+ char headers[1024];
+
+ hists_browser__scnprintf_headers(browser, headers,
+ sizeof(headers));
+
+ ui_browser__gotorc(&browser->b, 0, 0);
+ ui_browser__set_color(&browser->b, HE_COLORSET_ROOT);
+ ui_browser__write_nstring(&browser->b, headers, browser->b.width + 1);
+}
+
+static void hist_browser__show_headers(struct hist_browser *browser)
+{
+ if (symbol_conf.report_hierarchy)
+ hists_browser__hierarchy_headers(browser);
+ else
+ hists_browser__headers(browser);
+}
+
static void ui_browser__hists_init_top(struct ui_browser *browser)
{
if (browser->top == NULL) {
strcat(buf, "+");
first_col = false;
- fmt->header(fmt, &hpp, hists_to_evsel(hists));
+ fmt->header(fmt, &hpp, hists);
strcat(buf, ltrim(rtrim(hpp.buf)));
}
}
static int hpp__width_fn(struct perf_hpp_fmt *fmt,
struct perf_hpp *hpp __maybe_unused,
- struct perf_evsel *evsel)
+ struct hists *hists)
{
int len = fmt->user_len ?: fmt->len;
+ struct perf_evsel *evsel = hists_to_evsel(hists);
if (symbol_conf.event_group)
len = max(len, evsel->nr_members * fmt->len);
}
static int hpp__header_fn(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
- struct perf_evsel *evsel)
+ struct hists *hists)
{
- int len = hpp__width_fn(fmt, hpp, evsel);
+ int len = hpp__width_fn(fmt, hpp, hists);
return scnprintf(hpp->buf, hpp->size, "%*s", len, fmt->name);
}
else
ret += 2;
- ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
+ ret += fmt->width(fmt, &dummy_hpp, hists);
}
if (verbose && hists__has(hists, sym)) /* Addr + origin */
else
ret += 2;
- ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
+ ret += fmt->width(fmt, &dummy_hpp, hists);
}
return ret;
}
static int hist_entry__fprintf(struct hist_entry *he, size_t size,
- struct hists *hists,
- char *bf, size_t bfsz, FILE *fp)
+ char *bf, size_t bfsz, FILE *fp,
+ bool use_callchain)
{
int ret;
struct perf_hpp hpp = {
.buf = bf,
.size = size,
};
+ struct hists *hists = he->hists;
u64 total_period = hists->stats.total_period;
if (size == 0 || size > bfsz)
ret = fprintf(fp, "%s\n", bf);
- if (symbol_conf.use_callchain)
+ if (use_callchain)
ret += hist_entry_callchain__fprintf(he, total_period, 0, fp);
return ret;
struct perf_hpp_list_node, list);
perf_hpp_list__for_each_format(&fmt_node->hpp, fmt) {
- fmt->header(fmt, hpp, hists_to_evsel(hists));
+ fmt->header(fmt, hpp, hists);
fprintf(fp, "%s%s", hpp->buf, sep ?: " ");
}
header_width += fprintf(fp, "+");
first_col = false;
- fmt->header(fmt, hpp, hists_to_evsel(hists));
+ fmt->header(fmt, hpp, hists);
header_width += fprintf(fp, "%s", trim(hpp->buf));
}
fprintf(fp, "%s", sep ?: "..");
first_col = false;
- width = fmt->width(fmt, hpp, hists_to_evsel(hists));
+ width = fmt->width(fmt, hpp, hists);
fprintf(fp, "%.*s", width, dots);
}
width++; /* for '+' sign between column header */
first_col = false;
- width += fmt->width(fmt, hpp, hists_to_evsel(hists));
+ width += fmt->width(fmt, hpp, hists);
}
if (width > header_width)
return 2;
}
-size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
- int max_cols, float min_pcnt, FILE *fp)
+static int
+hists__fprintf_hierarchy_headers(struct hists *hists,
+ struct perf_hpp *hpp,
+ FILE *fp)
{
- struct perf_hpp_fmt *fmt;
struct perf_hpp_list_node *fmt_node;
- struct rb_node *nd;
- size_t ret = 0;
- unsigned int width;
- const char *sep = symbol_conf.field_sep;
- int nr_rows = 0;
- char bf[96];
- struct perf_hpp dummy_hpp = {
- .buf = bf,
- .size = sizeof(bf),
- };
- bool first = true;
- size_t linesz;
- char *line = NULL;
- unsigned indent;
-
- init_rem_hits();
-
- hists__for_each_format(hists, fmt)
- perf_hpp__reset_width(fmt, hists);
-
- if (symbol_conf.col_width_list_str)
- perf_hpp__set_user_width(symbol_conf.col_width_list_str);
+ struct perf_hpp_fmt *fmt;
- if (!show_header)
- goto print_entries;
+ list_for_each_entry(fmt_node, &hists->hpp_formats, list) {
+ perf_hpp_list__for_each_format(&fmt_node->hpp, fmt)
+ perf_hpp__reset_width(fmt, hists);
+ }
- fprintf(fp, "# ");
+ return print_hierarchy_header(hists, hpp, symbol_conf.field_sep, fp);
+}
- if (symbol_conf.report_hierarchy) {
- list_for_each_entry(fmt_node, &hists->hpp_formats, list) {
- perf_hpp_list__for_each_format(&fmt_node->hpp, fmt)
- perf_hpp__reset_width(fmt, hists);
- }
- nr_rows += print_hierarchy_header(hists, &dummy_hpp, sep, fp);
- goto print_entries;
- }
+static int
+hists__fprintf_standard_headers(struct hists *hists,
+ struct perf_hpp *hpp,
+ FILE *fp)
+{
+ struct perf_hpp_fmt *fmt;
+ unsigned int width;
+ const char *sep = symbol_conf.field_sep;
+ bool first = true;
hists__for_each_format(hists, fmt) {
if (perf_hpp__should_skip(fmt, hists))
else
first = false;
- fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists));
- fprintf(fp, "%s", bf);
+ fmt->header(fmt, hpp, hists);
+ fprintf(fp, "%s", hpp->buf);
}
fprintf(fp, "\n");
- if (max_rows && ++nr_rows >= max_rows)
- goto out;
if (sep)
- goto print_entries;
+ return 1;
first = true;
else
first = false;
- width = fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
+ width = fmt->width(fmt, hpp, hists);
for (i = 0; i < width; i++)
fprintf(fp, ".");
}
fprintf(fp, "\n");
- if (max_rows && ++nr_rows >= max_rows)
- goto out;
-
fprintf(fp, "#\n");
- if (max_rows && ++nr_rows >= max_rows)
+ return 3;
+}
+
+static int hists__fprintf_headers(struct hists *hists, FILE *fp)
+{
+ char bf[96];
+ struct perf_hpp dummy_hpp = {
+ .buf = bf,
+ .size = sizeof(bf),
+ };
+
+ fprintf(fp, "# ");
+
+ if (symbol_conf.report_hierarchy)
+ return hists__fprintf_hierarchy_headers(hists, &dummy_hpp, fp);
+ else
+ return hists__fprintf_standard_headers(hists, &dummy_hpp, fp);
+
+}
+
+size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
+ int max_cols, float min_pcnt, FILE *fp,
+ bool use_callchain)
+{
+ struct perf_hpp_fmt *fmt;
+ struct rb_node *nd;
+ size_t ret = 0;
+ const char *sep = symbol_conf.field_sep;
+ int nr_rows = 0;
+ size_t linesz;
+ char *line = NULL;
+ unsigned indent;
+
+ init_rem_hits();
+
+ hists__for_each_format(hists, fmt)
+ perf_hpp__reset_width(fmt, hists);
+
+ if (symbol_conf.col_width_list_str)
+ perf_hpp__set_user_width(symbol_conf.col_width_list_str);
+
+ if (show_header)
+ nr_rows += hists__fprintf_headers(hists, fp);
+
+ if (max_rows && nr_rows >= max_rows)
goto out;
-print_entries:
linesz = hists__sort_list_width(hists) + 3 + 1;
linesz += perf_hpp__color_overhead();
line = malloc(linesz);
if (percent < min_pcnt)
continue;
- ret += hist_entry__fprintf(h, max_cols, hists, line, linesz, fp);
+ ret += hist_entry__fprintf(h, max_cols, line, linesz, fp, use_callchain);
if (max_rows && ++nr_rows >= max_rows)
break;
no_buildid_cache = true;
}
-static char *build_id_cache__dirname_from_path(const char *name,
- bool is_kallsyms, bool is_vdso,
- const char *sbuild_id)
+char *build_id_cache__cachedir(const char *sbuild_id, const char *name,
+ bool is_kallsyms, bool is_vdso)
{
char *realname = (char *)name, *filename;
bool slash = is_kallsyms || is_vdso;
char *dir_name;
int ret = 0;
- dir_name = build_id_cache__dirname_from_path(pathname, false, false,
- NULL);
+ dir_name = build_id_cache__cachedir(NULL, pathname, false, false);
if (!dir_name)
return -ENOMEM;
goto out_free;
}
- dir_name = build_id_cache__dirname_from_path(name, is_kallsyms,
- is_vdso, sbuild_id);
+ dir_name = build_id_cache__cachedir(sbuild_id, name,
+ is_kallsyms, is_vdso);
if (!dir_name)
goto out_free;
int perf_session__write_buildid_table(struct perf_session *session, int fd);
int perf_session__cache_build_ids(struct perf_session *session);
+char *build_id_cache__cachedir(const char *sbuild_id, const char *name,
+ bool is_kallsyms, bool is_vdso);
int build_id_cache__list_build_ids(const char *pathname,
struct strlist **result);
bool build_id_cache__cached(const char *sbuild_id);
void perf_config_set__delete(struct perf_config_set *set)
{
+ if (set == NULL)
+ return;
+
perf_config_set__purge(set);
free(set);
}
struct perf_hpp_fmt *fmt, int printed)
{
if (!list_is_last(&fmt->list, &he->hists->hpp_list->fields)) {
- const int width = fmt->width(fmt, hpp, hists_to_evsel(he->hists));
+ const int width = fmt->width(fmt, hpp, he->hists);
if (printed < width) {
advance_hpp(hpp, printed);
printed = scnprintf(hpp->buf, hpp->size, "%-*s", width - printed, " ");
size_t events_stats__fprintf(struct events_stats *stats, FILE *fp);
size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
- int max_cols, float min_pcnt, FILE *fp);
+ int max_cols, float min_pcnt, FILE *fp,
+ bool use_callchain);
size_t perf_evlist__fprintf_nr_events(struct perf_evlist *evlist, FILE *fp);
void hists__filter_by_dso(struct hists *hists);
struct perf_hpp_fmt {
const char *name;
int (*header)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
- struct perf_evsel *evsel);
+ struct hists *hists);
int (*width)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
- struct perf_evsel *evsel);
+ struct hists *hists);
int (*color)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
struct hist_entry *he);
int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
#include "debug.h"
#include "symbol.h"
+unsigned int perf_mem_events__loads_ldlat = 30;
+
#define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
- E("ldlat-loads", "cpu/mem-loads,ldlat=30/P", "mem-loads"),
+ E("ldlat-loads", "cpu/mem-loads,ldlat=%u/P", "mem-loads"),
E("ldlat-stores", "cpu/mem-stores/P", "mem-stores"),
};
#undef E
#undef E
+static char mem_loads_name[100];
+static bool mem_loads_name__init;
+
char *perf_mem_events__name(int i)
{
+ if (i == PERF_MEM_EVENTS__LOAD) {
+ if (!mem_loads_name__init) {
+ mem_loads_name__init = true;
+ scnprintf(mem_loads_name, sizeof(mem_loads_name),
+ perf_mem_events[i].name,
+ perf_mem_events__loads_ldlat);
+ }
+ return mem_loads_name;
+ }
+
return (char *)perf_mem_events[i].name;
}
};
extern struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX];
+extern unsigned int perf_mem_events__loads_ldlat;
int perf_mem_events__parse(const char *str);
int perf_mem_events__init(void);
return ret;
}
-static char *synthesize_perf_probe_point(struct perf_probe_point *pp);
static struct machine *host_machine;
/* Initialize symbol maps and path of vmlinux/modules */
p = strchr(argv[1], ':');
if (p) {
tp->module = strndup(argv[1], p - argv[1]);
+ if (!tp->module) {
+ ret = -ENOMEM;
+ goto out;
+ }
p++;
} else
p = argv[1];
}
/* Compose only probe point (not argument) */
-static char *synthesize_perf_probe_point(struct perf_probe_point *pp)
+char *synthesize_perf_probe_point(struct perf_probe_point *pp)
{
struct strbuf buf;
char *tmp, *ret = NULL;
return ret;
}
-#if 0
char *synthesize_perf_probe_command(struct perf_probe_event *pev)
{
- char *buf;
- int i, len, ret;
+ struct strbuf buf;
+ char *tmp, *ret = NULL;
+ int i;
- buf = synthesize_perf_probe_point(&pev->point);
- if (!buf)
+ if (strbuf_init(&buf, 64))
return NULL;
+ if (pev->event)
+ if (strbuf_addf(&buf, "%s:%s=", pev->group ?: PERFPROBE_GROUP,
+ pev->event) < 0)
+ goto out;
+
+ tmp = synthesize_perf_probe_point(&pev->point);
+ if (!tmp || strbuf_addstr(&buf, tmp) < 0)
+ goto out;
+ free(tmp);
- len = strlen(buf);
for (i = 0; i < pev->nargs; i++) {
- ret = e_snprintf(&buf[len], MAX_CMDLEN - len, " %s",
- pev->args[i].name);
- if (ret <= 0) {
- free(buf);
- return NULL;
- }
- len += ret;
+ tmp = synthesize_perf_probe_arg(pev->args + i);
+ if (!tmp || strbuf_addf(&buf, " %s", tmp) < 0)
+ goto out;
+ free(tmp);
}
- return buf;
+ ret = strbuf_detach(&buf, NULL);
+out:
+ strbuf_release(&buf);
+ return ret;
}
-#endif
static int __synthesize_probe_trace_arg_ref(struct probe_trace_arg_ref *ref,
struct strbuf *buf, int depth)
memset(pev, 0, sizeof(*pev));
}
+#define strdup_or_goto(str, label) \
+({ char *__p = NULL; if (str && !(__p = strdup(str))) goto label; __p; })
+
+static int perf_probe_point__copy(struct perf_probe_point *dst,
+ struct perf_probe_point *src)
+{
+ dst->file = strdup_or_goto(src->file, out_err);
+ dst->function = strdup_or_goto(src->function, out_err);
+ dst->lazy_line = strdup_or_goto(src->lazy_line, out_err);
+ dst->line = src->line;
+ dst->retprobe = src->retprobe;
+ dst->offset = src->offset;
+ return 0;
+
+out_err:
+ clear_perf_probe_point(dst);
+ return -ENOMEM;
+}
+
+static int perf_probe_arg__copy(struct perf_probe_arg *dst,
+ struct perf_probe_arg *src)
+{
+ struct perf_probe_arg_field *field, **ppfield;
+
+ dst->name = strdup_or_goto(src->name, out_err);
+ dst->var = strdup_or_goto(src->var, out_err);
+ dst->type = strdup_or_goto(src->type, out_err);
+
+ field = src->field;
+ ppfield = &(dst->field);
+ while (field) {
+ *ppfield = zalloc(sizeof(*field));
+ if (!*ppfield)
+ goto out_err;
+ (*ppfield)->name = strdup_or_goto(field->name, out_err);
+ (*ppfield)->index = field->index;
+ (*ppfield)->ref = field->ref;
+ field = field->next;
+ ppfield = &((*ppfield)->next);
+ }
+ return 0;
+out_err:
+ return -ENOMEM;
+}
+
+int perf_probe_event__copy(struct perf_probe_event *dst,
+ struct perf_probe_event *src)
+{
+ int i;
+
+ dst->event = strdup_or_goto(src->event, out_err);
+ dst->group = strdup_or_goto(src->group, out_err);
+ dst->target = strdup_or_goto(src->target, out_err);
+ dst->uprobes = src->uprobes;
+
+ if (perf_probe_point__copy(&dst->point, &src->point) < 0)
+ goto out_err;
+
+ dst->args = zalloc(sizeof(struct perf_probe_arg) * src->nargs);
+ if (!dst->args)
+ goto out_err;
+ dst->nargs = src->nargs;
+
+ for (i = 0; i < src->nargs; i++)
+ if (perf_probe_arg__copy(&dst->args[i], &src->args[i]) < 0)
+ goto out_err;
+ return 0;
+
+out_err:
+ clear_perf_probe_event(dst);
+ return -ENOMEM;
+}
+
void clear_probe_trace_event(struct probe_trace_event *tev)
{
struct probe_trace_arg_ref *ref, *next;
{
int i, fd, ret;
struct probe_trace_event *tev = NULL;
+ struct probe_cache *cache = NULL;
struct strlist *namelist;
fd = probe_file__open(PF_FL_RW | (pev->uprobes ? PF_FL_UPROBE : 0));
}
if (ret == -EINVAL && pev->uprobes)
warn_uprobe_event_compat(tev);
+ if (ret == 0 && probe_conf.cache) {
+ cache = probe_cache__new(pev->target);
+ if (!cache ||
+ probe_cache__add_entry(cache, pev, tevs, ntevs) < 0 ||
+ probe_cache__commit(cache) < 0)
+ pr_warning("Failed to add event to probe cache\n");
+ probe_cache__delete(cache);
+ }
strlist__delete(namelist);
close_out:
return found;
}
-#define strdup_or_goto(str, label) \
- ({ char *__p = strdup(str); if (!__p) goto label; __p; })
-
void __weak arch__fix_tev_from_maps(struct perf_probe_event *pev __maybe_unused,
struct probe_trace_event *tev __maybe_unused,
struct map *map __maybe_unused,
bool show_location_range;
bool force_add;
bool no_inlines;
+ bool cache;
int max_probes;
};
extern struct probe_conf probe_conf;
char *synthesize_perf_probe_command(struct perf_probe_event *pev);
char *synthesize_probe_trace_command(struct probe_trace_event *tev);
char *synthesize_perf_probe_arg(struct perf_probe_arg *pa);
+char *synthesize_perf_probe_point(struct perf_probe_point *pp);
+
+int perf_probe_event__copy(struct perf_probe_event *dst,
+ struct perf_probe_event *src);
/* Check the perf_probe_event needs debuginfo */
bool perf_probe_event_need_dwarf(struct perf_probe_event *pev);
* GNU General Public License for more details.
*
*/
+#include <sys/uio.h>
#include "util.h"
#include "event.h"
#include "strlist.h"
return ret;
}
+
+/* Caller must ensure to remove this entry from list */
+static void probe_cache_entry__delete(struct probe_cache_entry *entry)
+{
+ if (entry) {
+ BUG_ON(!list_empty(&entry->node));
+
+ strlist__delete(entry->tevlist);
+ clear_perf_probe_event(&entry->pev);
+ zfree(&entry->spev);
+ free(entry);
+ }
+}
+
+static struct probe_cache_entry *
+probe_cache_entry__new(struct perf_probe_event *pev)
+{
+ struct probe_cache_entry *entry = zalloc(sizeof(*entry));
+
+ if (entry) {
+ INIT_LIST_HEAD(&entry->node);
+ entry->tevlist = strlist__new(NULL, NULL);
+ if (!entry->tevlist)
+ zfree(&entry);
+ else if (pev) {
+ entry->spev = synthesize_perf_probe_command(pev);
+ if (!entry->spev ||
+ perf_probe_event__copy(&entry->pev, pev) < 0) {
+ probe_cache_entry__delete(entry);
+ return NULL;
+ }
+ }
+ }
+
+ return entry;
+}
+
+/* For the kernel probe caches, pass target = NULL */
+static int probe_cache__open(struct probe_cache *pcache, const char *target)
+{
+ char cpath[PATH_MAX];
+ char sbuildid[SBUILD_ID_SIZE];
+ char *dir_name;
+ bool is_kallsyms = !target;
+ int ret, fd;
+
+ if (target)
+ ret = filename__sprintf_build_id(target, sbuildid);
+ else {
+ target = DSO__NAME_KALLSYMS;
+ ret = sysfs__sprintf_build_id("/", sbuildid);
+ }
+ if (ret < 0) {
+ pr_debug("Failed to get build-id from %s.\n", target);
+ return ret;
+ }
+
+ /* If we have no buildid cache, make it */
+ if (!build_id_cache__cached(sbuildid)) {
+ ret = build_id_cache__add_s(sbuildid, target,
+ is_kallsyms, NULL);
+ if (ret < 0) {
+ pr_debug("Failed to add build-id cache: %s\n", target);
+ return ret;
+ }
+ }
+
+ dir_name = build_id_cache__cachedir(sbuildid, target, is_kallsyms,
+ false);
+ if (!dir_name)
+ return -ENOMEM;
+
+ snprintf(cpath, PATH_MAX, "%s/probes", dir_name);
+ fd = open(cpath, O_CREAT | O_RDWR, 0644);
+ if (fd < 0)
+ pr_debug("Failed to open cache(%d): %s\n", fd, cpath);
+ free(dir_name);
+ pcache->fd = fd;
+
+ return fd;
+}
+
+static int probe_cache__load(struct probe_cache *pcache)
+{
+ struct probe_cache_entry *entry = NULL;
+ char buf[MAX_CMDLEN], *p;
+ int ret = 0;
+ FILE *fp;
+
+ fp = fdopen(dup(pcache->fd), "r");
+ if (!fp)
+ return -EINVAL;
+
+ while (!feof(fp)) {
+ if (!fgets(buf, MAX_CMDLEN, fp))
+ break;
+ p = strchr(buf, '\n');
+ if (p)
+ *p = '\0';
+ if (buf[0] == '#') { /* #perf_probe_event */
+ entry = probe_cache_entry__new(NULL);
+ if (!entry) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ entry->spev = strdup(buf + 1);
+ if (entry->spev)
+ ret = parse_perf_probe_command(buf + 1,
+ &entry->pev);
+ else
+ ret = -ENOMEM;
+ if (ret < 0) {
+ probe_cache_entry__delete(entry);
+ goto out;
+ }
+ list_add_tail(&entry->node, &pcache->entries);
+ } else { /* trace_probe_event */
+ if (!entry) {
+ ret = -EINVAL;
+ goto out;
+ }
+ strlist__add(entry->tevlist, buf);
+ }
+ }
+out:
+ fclose(fp);
+ return ret;
+}
+
+static struct probe_cache *probe_cache__alloc(void)
+{
+ struct probe_cache *pcache = zalloc(sizeof(*pcache));
+
+ if (pcache) {
+ INIT_LIST_HEAD(&pcache->entries);
+ pcache->fd = -EINVAL;
+ }
+ return pcache;
+}
+
+void probe_cache__purge(struct probe_cache *pcache)
+{
+ struct probe_cache_entry *entry, *n;
+
+ list_for_each_entry_safe(entry, n, &pcache->entries, node) {
+ list_del_init(&entry->node);
+ probe_cache_entry__delete(entry);
+ }
+}
+
+void probe_cache__delete(struct probe_cache *pcache)
+{
+ if (!pcache)
+ return;
+
+ probe_cache__purge(pcache);
+ if (pcache->fd > 0)
+ close(pcache->fd);
+ free(pcache);
+}
+
+struct probe_cache *probe_cache__new(const char *target)
+{
+ struct probe_cache *pcache = probe_cache__alloc();
+ int ret;
+
+ if (!pcache)
+ return NULL;
+
+ ret = probe_cache__open(pcache, target);
+ if (ret < 0) {
+ pr_debug("Cache open error: %d\n", ret);
+ goto out_err;
+ }
+
+ ret = probe_cache__load(pcache);
+ if (ret < 0) {
+ pr_debug("Cache read error: %d\n", ret);
+ goto out_err;
+ }
+
+ return pcache;
+
+out_err:
+ probe_cache__delete(pcache);
+ return NULL;
+}
+
+static bool streql(const char *a, const char *b)
+{
+ if (a == b)
+ return true;
+
+ if (!a || !b)
+ return false;
+
+ return !strcmp(a, b);
+}
+
+static struct probe_cache_entry *
+probe_cache__find(struct probe_cache *pcache, struct perf_probe_event *pev)
+{
+ struct probe_cache_entry *entry = NULL;
+ char *cmd = synthesize_perf_probe_command(pev);
+
+ if (!cmd)
+ return NULL;
+
+ list_for_each_entry(entry, &pcache->entries, node) {
+ /* Hit if same event name or same command-string */
+ if ((pev->event &&
+ (streql(entry->pev.group, pev->group) &&
+ streql(entry->pev.event, pev->event))) ||
+ (!strcmp(entry->spev, cmd)))
+ goto found;
+ }
+ entry = NULL;
+
+found:
+ free(cmd);
+ return entry;
+}
+
+int probe_cache__add_entry(struct probe_cache *pcache,
+ struct perf_probe_event *pev,
+ struct probe_trace_event *tevs, int ntevs)
+{
+ struct probe_cache_entry *entry = NULL;
+ char *command;
+ int i, ret = 0;
+
+ if (!pcache || !pev || !tevs || ntevs <= 0) {
+ ret = -EINVAL;
+ goto out_err;
+ }
+
+ /* Remove old cache entry */
+ entry = probe_cache__find(pcache, pev);
+ if (entry) {
+ list_del_init(&entry->node);
+ probe_cache_entry__delete(entry);
+ }
+
+ ret = -ENOMEM;
+ entry = probe_cache_entry__new(pev);
+ if (!entry)
+ goto out_err;
+
+ for (i = 0; i < ntevs; i++) {
+ if (!tevs[i].point.symbol)
+ continue;
+
+ command = synthesize_probe_trace_command(&tevs[i]);
+ if (!command)
+ goto out_err;
+ strlist__add(entry->tevlist, command);
+ free(command);
+ }
+ list_add_tail(&entry->node, &pcache->entries);
+ pr_debug("Added probe cache: %d\n", ntevs);
+ return 0;
+
+out_err:
+ pr_debug("Failed to add probe caches\n");
+ probe_cache_entry__delete(entry);
+ return ret;
+}
+
+static int probe_cache_entry__write(struct probe_cache_entry *entry, int fd)
+{
+ struct str_node *snode;
+ struct stat st;
+ struct iovec iov[3];
+ int ret;
+ /* Save stat for rollback */
+ ret = fstat(fd, &st);
+ if (ret < 0)
+ return ret;
+
+ pr_debug("Writing cache: #%s\n", entry->spev);
+ iov[0].iov_base = (void *)"#"; iov[0].iov_len = 1;
+ iov[1].iov_base = entry->spev; iov[1].iov_len = strlen(entry->spev);
+ iov[2].iov_base = (void *)"\n"; iov[2].iov_len = 1;
+ ret = writev(fd, iov, 3);
+ if (ret < (int)iov[1].iov_len + 2)
+ goto rollback;
+
+ strlist__for_each(snode, entry->tevlist) {
+ iov[0].iov_base = (void *)snode->s;
+ iov[0].iov_len = strlen(snode->s);
+ iov[1].iov_base = (void *)"\n"; iov[1].iov_len = 1;
+ ret = writev(fd, iov, 2);
+ if (ret < (int)iov[0].iov_len + 1)
+ goto rollback;
+ }
+ return 0;
+
+rollback:
+ /* Rollback to avoid cache file corruption */
+ if (ret > 0)
+ ret = -1;
+ if (ftruncate(fd, st.st_size) < 0)
+ ret = -2;
+
+ return ret;
+}
+
+int probe_cache__commit(struct probe_cache *pcache)
+{
+ struct probe_cache_entry *entry;
+ int ret = 0;
+
+ /* TBD: if we do not update existing entries, skip it */
+ ret = lseek(pcache->fd, 0, SEEK_SET);
+ if (ret < 0)
+ goto out;
+
+ ret = ftruncate(pcache->fd, 0);
+ if (ret < 0)
+ goto out;
+
+ list_for_each_entry(entry, &pcache->entries, node) {
+ ret = probe_cache_entry__write(entry, pcache->fd);
+ pr_debug("Cache committed: %d\n", ret);
+ if (ret < 0)
+ break;
+ }
+out:
+ return ret;
+}
#include "strfilter.h"
#include "probe-event.h"
+/* Cache of probe definitions */
+struct probe_cache_entry {
+ struct list_head node;
+ struct perf_probe_event pev;
+ char *spev;
+ struct strlist *tevlist;
+};
+
+struct probe_cache {
+ int fd;
+ struct list_head entries;
+};
+
#define PF_FL_UPROBE 1
#define PF_FL_RW 2
struct strlist *plist);
int probe_file__del_strlist(int fd, struct strlist *namelist);
+struct probe_cache *probe_cache__new(const char *target);
+int probe_cache__add_entry(struct probe_cache *pcache,
+ struct perf_probe_event *pev,
+ struct probe_trace_event *tevs, int ntevs);
+int probe_cache__commit(struct probe_cache *pcache);
+void probe_cache__purge(struct probe_cache *pcache);
+void probe_cache__delete(struct probe_cache *pcache);
#endif
.se_header = "Data Object",
.se_cmp = sort__dso_daddr_cmp,
.se_snprintf = hist_entry__dso_daddr_snprintf,
- .se_width_idx = HISTC_MEM_DADDR_SYMBOL,
+ .se_width_idx = HISTC_MEM_DADDR_DSO,
};
struct sort_entry sort_mem_locked = {
}
static int __sort__hpp_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
- struct perf_evsel *evsel)
+ struct hists *hists)
{
struct hpp_sort_entry *hse;
size_t len = fmt->user_len;
hse = container_of(fmt, struct hpp_sort_entry, hpp);
if (!len)
- len = hists__col_len(evsel__hists(evsel), hse->se->se_width_idx);
+ len = hists__col_len(hists, hse->se->se_width_idx);
return scnprintf(hpp->buf, hpp->size, "%-*.*s", len, len, fmt->name);
}
static int __sort__hpp_width(struct perf_hpp_fmt *fmt,
struct perf_hpp *hpp __maybe_unused,
- struct perf_evsel *evsel)
+ struct hists *hists)
{
struct hpp_sort_entry *hse;
size_t len = fmt->user_len;
hse = container_of(fmt, struct hpp_sort_entry, hpp);
if (!len)
- len = hists__col_len(evsel__hists(evsel), hse->se->se_width_idx);
+ len = hists__col_len(hists, hse->se->se_width_idx);
return len;
}
}
static int __sort__hde_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
- struct perf_evsel *evsel __maybe_unused)
+ struct hists *hists __maybe_unused)
{
struct hpp_dynamic_entry *hde;
size_t len = fmt->user_len;
static int __sort__hde_width(struct perf_hpp_fmt *fmt,
struct perf_hpp *hpp __maybe_unused,
- struct perf_evsel *evsel __maybe_unused)
+ struct hists *hists __maybe_unused)
{
struct hpp_dynamic_entry *hde;
size_t len = fmt->user_len;
scnprintf(namebuf, sizeof(namebuf), "%s/%s",
path, d->d_name);
- ret = stat(namebuf, &statbuf);
+ /* We have to check symbolic link itself */
+ ret = lstat(namebuf, &statbuf);
if (ret < 0) {
pr_debug("stat failed: %s\n", namebuf);
break;
}
- if (S_ISREG(statbuf.st_mode))
- ret = unlink(namebuf);
- else if (S_ISDIR(statbuf.st_mode))
+ if (S_ISDIR(statbuf.st_mode))
ret = rm_rf(namebuf);
- else {
- pr_debug("unknown file: %s\n", namebuf);
- ret = -1;
- }
+ else
+ ret = unlink(namebuf);
}
closedir(dir);
projects / deliverable / linux.git / commitdiff
