Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index f119eb6..91cab5f 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -1,22 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* probe-event.c : perf-probe definition to probe_events format converter
*
* Written by Masami Hiramatsu <mhiramat@redhat.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
*/
#include <inttypes.h>
@@ -33,15 +19,17 @@
#include <limits.h>
#include <elf.h>
-#include "util.h"
+#include "build-id.h"
#include "event.h"
+#include "namespaces.h"
#include "strlist.h"
#include "strfilter.h"
#include "debug.h"
-#include "cache.h"
+#include "dso.h"
#include "color.h"
+#include "map.h"
+#include "map_groups.h"
#include "symbol.h"
-#include "thread.h"
#include <api/fs/fs.h>
#include "trace-event.h" /* For __maybe_unused */
#include "probe-event.h"
@@ -49,8 +37,11 @@
#include "probe-file.h"
#include "session.h"
#include "string2.h"
+#include "strbuf.h"
-#include "sane_ctype.h"
+#include <subcmd/pager.h>
+#include <linux/ctype.h>
+#include <linux/zalloc.h>
#define PERFPROBE_GROUP "probe"
@@ -157,8 +148,10 @@
if (module && strchr(module, '/'))
return dso__new_map(module);
- if (!module)
- module = "kernel";
+ if (!module) {
+ pos = machine__kernel_map(host_machine);
+ return map__get(pos);
+ }
for (pos = maps__first(maps); pos; pos = map__next(pos)) {
/* short_name is "[module]" */
@@ -223,9 +216,9 @@
static void clear_perf_probe_point(struct perf_probe_point *pp)
{
- free(pp->file);
- free(pp->function);
- free(pp->lazy_line);
+ zfree(&pp->file);
+ zfree(&pp->function);
+ zfree(&pp->lazy_line);
}
static void clear_probe_trace_events(struct probe_trace_event *tevs, int ntevs)
@@ -469,9 +462,12 @@
strcpy(reason, "(unknown)");
} else
dso__strerror_load(dso, reason, STRERR_BUFSIZE);
- if (!silent)
- pr_err("Failed to find the path for %s: %s\n",
- module ?: "kernel", reason);
+ if (!silent) {
+ if (module)
+ pr_err("Module %s is not loaded, please specify its full path name.\n", module);
+ else
+ pr_err("Failed to find the path for the kernel: %s\n", reason);
+ }
return NULL;
}
path = dso->long_name;
@@ -692,7 +688,7 @@
return ret;
for (i = 0; i < ntevs && ret >= 0; i++) {
- /* point.address is the addres of point.symbol + point.offset */
+ /* point.address is the address of point.symbol + point.offset */
tevs[i].point.address -= stext;
tevs[i].point.module = strdup(exec);
if (!tevs[i].point.module) {
@@ -1181,12 +1177,11 @@
void line_range__clear(struct line_range *lr)
{
- free(lr->function);
- free(lr->file);
- free(lr->path);
- free(lr->comp_dir);
+ zfree(&lr->function);
+ zfree(&lr->file);
+ zfree(&lr->path);
+ zfree(&lr->comp_dir);
intlist__delete(lr->line_list);
- memset(lr, 0, sizeof(*lr));
}
int line_range__init(struct line_range *lr)
@@ -1569,6 +1564,17 @@
str = tmp + 1;
}
+ tmp = strchr(str, '@');
+ if (tmp && tmp != str && strcmp(tmp + 1, "user")) { /* user attr */
+ if (!user_access_is_supported()) {
+ semantic_error("ftrace does not support user access\n");
+ return -EINVAL;
+ }
+ *tmp = '\0';
+ arg->user_access = true;
+ pr_debug("user_access ");
+ }
+
tmp = strchr(str, ':');
if (tmp) { /* Type setting */
*tmp = '\0';
@@ -1819,6 +1825,12 @@
tp->offset = strtoul(fmt2_str, NULL, 10);
}
+ if (tev->uprobes) {
+ fmt2_str = strchr(p, '(');
+ if (fmt2_str)
+ tp->ref_ctr_offset = strtoul(fmt2_str + 1, NULL, 0);
+ }
+
tev->nargs = argc - 2;
tev->args = zalloc(sizeof(struct probe_trace_arg) * tev->nargs);
if (tev->args == NULL) {
@@ -2012,6 +2024,22 @@
return err;
}
+static int
+synthesize_uprobe_trace_def(struct probe_trace_event *tev, struct strbuf *buf)
+{
+ struct probe_trace_point *tp = &tev->point;
+ int err;
+
+ err = strbuf_addf(buf, "%s:0x%lx", tp->module, tp->address);
+
+ if (err >= 0 && tp->ref_ctr_offset) {
+ if (!uprobe_ref_ctr_is_supported())
+ return -1;
+ err = strbuf_addf(buf, "(0x%lx)", tp->ref_ctr_offset);
+ }
+ return err >= 0 ? 0 : -1;
+}
+
char *synthesize_probe_trace_command(struct probe_trace_event *tev)
{
struct probe_trace_point *tp = &tev->point;
@@ -2041,15 +2069,17 @@
}
/* Use the tp->address for uprobes */
- if (tev->uprobes)
- err = strbuf_addf(&buf, "%s:0x%lx", tp->module, tp->address);
- else if (!strncmp(tp->symbol, "0x", 2))
+ if (tev->uprobes) {
+ err = synthesize_uprobe_trace_def(tev, &buf);
+ } else if (!strncmp(tp->symbol, "0x", 2)) {
/* Absolute address. See try_to_find_absolute_address() */
err = strbuf_addf(&buf, "%s%s0x%lx", tp->module ?: "",
tp->module ? ":" : "", tp->address);
- else
+ } else {
err = strbuf_addf(&buf, "%s%s%s+%lu", tp->module ?: "",
tp->module ? ":" : "", tp->symbol, tp->offset);
+ }
+
if (err)
goto error;
@@ -2185,15 +2215,15 @@
struct perf_probe_arg_field *field, *next;
int i;
- free(pev->event);
- free(pev->group);
- free(pev->target);
+ zfree(&pev->event);
+ zfree(&pev->group);
+ zfree(&pev->target);
clear_perf_probe_point(&pev->point);
for (i = 0; i < pev->nargs; i++) {
- free(pev->args[i].name);
- free(pev->args[i].var);
- free(pev->args[i].type);
+ zfree(&pev->args[i].name);
+ zfree(&pev->args[i].var);
+ zfree(&pev->args[i].type);
field = pev->args[i].field;
while (field) {
next = field->next;
@@ -2202,8 +2232,8 @@
field = next;
}
}
- free(pev->args);
- memset(pev, 0, sizeof(*pev));
+ pev->nargs = 0;
+ zfree(&pev->args);
}
#define strdup_or_goto(str, label) \
@@ -2284,15 +2314,15 @@
struct probe_trace_arg_ref *ref, *next;
int i;
- free(tev->event);
- free(tev->group);
- free(tev->point.symbol);
- free(tev->point.realname);
- free(tev->point.module);
+ zfree(&tev->event);
+ zfree(&tev->group);
+ zfree(&tev->point.symbol);
+ zfree(&tev->point.realname);
+ zfree(&tev->point.module);
for (i = 0; i < tev->nargs; i++) {
- free(tev->args[i].name);
- free(tev->args[i].value);
- free(tev->args[i].type);
+ zfree(&tev->args[i].name);
+ zfree(&tev->args[i].value);
+ zfree(&tev->args[i].type);
ref = tev->args[i].ref;
while (ref) {
next = ref->next;
@@ -2300,8 +2330,8 @@
ref = next;
}
}
- free(tev->args);
- memset(tev, 0, sizeof(*tev));
+ zfree(&tev->args);
+ tev->nargs = 0;
}
struct kprobe_blacklist_node {
@@ -2318,8 +2348,8 @@
while (!list_empty(blacklist)) {
node = list_first_entry(blacklist,
struct kprobe_blacklist_node, list);
- list_del(&node->list);
- free(node->symbol);
+ list_del_init(&node->list);
+ zfree(&node->symbol);
free(node);
}
}
@@ -2633,6 +2663,13 @@
{
int i;
char *buf = synthesize_probe_trace_command(tev);
+ struct probe_trace_point *tp = &tev->point;
+
+ if (tp->ref_ctr_offset && !uprobe_ref_ctr_is_supported()) {
+ pr_warning("A semaphore is associated with %s:%s and "
+ "seems your kernel doesn't support it.\n",
+ tev->group, tev->event);
+ }
/* Old uprobe event doesn't support memory dereference */
if (!tev->uprobes || tev->nargs == 0 || !buf)
@@ -3031,7 +3068,7 @@
/*
* Give it a '0x' leading symbol name.
* In __add_probe_trace_events, a NULL symbol is interpreted as
- * invalud.
+ * invalid.
*/
if (asprintf(&tp->symbol, "0x%lx", tp->address) < 0)
goto errout;
@@ -3497,7 +3534,8 @@
/* Show all (filtered) symbols */
setup_pager();
- for (nd = rb_first(&map->dso->symbol_names); nd; nd = rb_next(nd)) {
+ for (nd = rb_first_cached(&map->dso->symbol_names); nd;
+ nd = rb_next(nd)) {
struct symbol_name_rb_node *pos = rb_entry(nd, struct symbol_name_rb_node, rb_node);
if (strfilter__compare(_filter, pos->sym.name))