| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20260211084858.750950-6-jolsa@kernel.org>
Date: Wed, 11 Feb 2026 09:48:58 +0100
From: Jiri Olsa <jolsa@...nel.org>
To: Andrii Nakryiko <andrii@...nel.org>
Cc: bpf@...r.kernel.org,
linux-kernel@...r.kernel.org,
Song Liu <songliubraving@...com>,
Yonghong Song <yhs@...com>,
John Fastabend <john.fastabend@...il.com>
Subject: [PATCHv3 bpf-next 5/5] selftests/bpf: Add usdt trigger bench
Adding usdt trigger bench for usdt:
trig-usdt_nop - usdt on top of nop1 instruction
trig-usdt_nop_combo - usdt on top of nop1/nop5 combo
Adding it to benchs/run_bench_uprobes.sh script.
Example run on x86_64 kernel with uprobe syscall:
# ./benchs/run_bench_uprobes.sh
usermode-count : 152.507 ± 0.098M/s
syscall-count : 14.309 ± 0.093M/s
uprobe-nop : 3.190 ± 0.012M/s
uprobe-push : 3.057 ± 0.004M/s
uprobe-ret : 1.095 ± 0.009M/s
uprobe-nop5 : 7.305 ± 0.034M/s
uretprobe-nop : 2.175 ± 0.005M/s
uretprobe-push : 2.109 ± 0.003M/s
uretprobe-ret : 0.945 ± 0.002M/s
uretprobe-nop5 : 3.530 ± 0.006M/s
usdt_nop : 3.235 ± 0.008M/s <-- added
usdt_nop_combo : 7.511 ± 0.045M/s <-- added
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
tools/testing/selftests/bpf/Makefile | 2 +
tools/testing/selftests/bpf/bench.c | 4 ++
.../selftests/bpf/benchs/bench_trigger.c | 60 +++++++++++++++++++
.../selftests/bpf/benchs/run_bench_uprobes.sh | 2 +-
.../selftests/bpf/progs/trigger_bench.c | 10 +++-
5 files changed, 76 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 306949162a5b..9b2ca0028322 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -874,6 +874,8 @@ $(OUTPUT)/bench: $(OUTPUT)/bench.o \
$(OUTPUT)/bench_bpf_crypto.o \
$(OUTPUT)/bench_sockmap.o \
$(OUTPUT)/bench_lpm_trie_map.o \
+ $(OUTPUT)/usdt_1.o \
+ $(OUTPUT)/usdt_2.o \
#
$(call msg,BINARY,,$@)
$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
diff --git a/tools/testing/selftests/bpf/bench.c b/tools/testing/selftests/bpf/bench.c
index 8368bd3a0665..4dacb87e464e 100644
--- a/tools/testing/selftests/bpf/bench.c
+++ b/tools/testing/selftests/bpf/bench.c
@@ -541,6 +541,8 @@ extern const struct bench bench_trig_uprobe_nop5;
extern const struct bench bench_trig_uretprobe_nop5;
extern const struct bench bench_trig_uprobe_multi_nop5;
extern const struct bench bench_trig_uretprobe_multi_nop5;
+extern const struct bench bench_trig_usdt_nop;
+extern const struct bench bench_trig_usdt_nop_combo;
#endif
extern const struct bench bench_rb_libbpf;
@@ -617,6 +619,8 @@ static const struct bench *benchs[] = {
&bench_trig_uretprobe_nop5,
&bench_trig_uprobe_multi_nop5,
&bench_trig_uretprobe_multi_nop5,
+ &bench_trig_usdt_nop,
+ &bench_trig_usdt_nop_combo,
#endif
/* ringbuf/perfbuf benchmarks */
&bench_rb_libbpf,
diff --git a/tools/testing/selftests/bpf/benchs/bench_trigger.c b/tools/testing/selftests/bpf/benchs/bench_trigger.c
index aeec9edd3851..b4b03fe1f61d 100644
--- a/tools/testing/selftests/bpf/benchs/bench_trigger.c
+++ b/tools/testing/selftests/bpf/benchs/bench_trigger.c
@@ -405,6 +405,23 @@ static void *uprobe_producer_nop5(void *input)
uprobe_target_nop5();
return NULL;
}
+
+void usdt_1(void);
+void usdt_2(void);
+
+static void *uprobe_producer_usdt_nop(void *input)
+{
+ while (true)
+ usdt_1();
+ return NULL;
+}
+
+static void *uprobe_producer_usdt_nop_combo(void *input)
+{
+ while (true)
+ usdt_2();
+ return NULL;
+}
#endif
static void usetup(bool use_retprobe, bool use_multi, void *target_addr)
@@ -542,6 +559,47 @@ static void uretprobe_multi_nop5_setup(void)
{
usetup(true, true /* use_multi */, &uprobe_target_nop5);
}
+
+static void usdt_setup(const char *name)
+{
+ struct bpf_link *link;
+ int err;
+
+ setup_libbpf();
+
+ ctx.skel = trigger_bench__open();
+ if (!ctx.skel) {
+ fprintf(stderr, "failed to open skeleton\n");
+ exit(1);
+ }
+
+ bpf_program__set_autoload(ctx.skel->progs.bench_trigger_usdt, true);
+
+ err = trigger_bench__load(ctx.skel);
+ if (err) {
+ fprintf(stderr, "failed to load skeleton\n");
+ exit(1);
+ }
+
+ link = bpf_program__attach_usdt(ctx.skel->progs.bench_trigger_usdt,
+ 0 /*self*/, "/proc/self/exe",
+ "optimized_attach", name, NULL);
+ if (libbpf_get_error(link)) {
+ fprintf(stderr, "failed to attach optimized_attach:%s usdt probe\n", name);
+ exit(1);
+ }
+ ctx.skel->links.bench_trigger_usdt = link;
+}
+
+static void usdt_nop_setup(void)
+{
+ usdt_setup("usdt_1");
+}
+
+static void usdt_nop_combo_setup(void)
+{
+ usdt_setup("usdt_2");
+}
#endif
const struct bench bench_trig_syscall_count = {
@@ -609,4 +667,6 @@ BENCH_TRIG_USERMODE(uprobe_nop5, nop5, "uprobe-nop5");
BENCH_TRIG_USERMODE(uretprobe_nop5, nop5, "uretprobe-nop5");
BENCH_TRIG_USERMODE(uprobe_multi_nop5, nop5, "uprobe-multi-nop5");
BENCH_TRIG_USERMODE(uretprobe_multi_nop5, nop5, "uretprobe-multi-nop5");
+BENCH_TRIG_USERMODE(usdt_nop, usdt_nop, "usdt_nop");
+BENCH_TRIG_USERMODE(usdt_nop_combo, usdt_nop_combo, "usdt_nop_combo");
#endif
diff --git a/tools/testing/selftests/bpf/benchs/run_bench_uprobes.sh b/tools/testing/selftests/bpf/benchs/run_bench_uprobes.sh
index 03f55405484b..3656676d99d2 100755
--- a/tools/testing/selftests/bpf/benchs/run_bench_uprobes.sh
+++ b/tools/testing/selftests/bpf/benchs/run_bench_uprobes.sh
@@ -2,7 +2,7 @@
set -eufo pipefail
-for i in usermode-count syscall-count {uprobe,uretprobe}-{nop,push,ret,nop5}
+for i in usermode-count syscall-count {uprobe,uretprobe}-{nop,push,ret,nop5} usdt_nop usdt_nop_combo
do
summary=$(sudo ./bench -w2 -d5 -a trig-$i | tail -n1 | cut -d'(' -f1 | cut -d' ' -f3-)
printf "%-15s: %s\n" $i "$summary"
diff --git a/tools/testing/selftests/bpf/progs/trigger_bench.c b/tools/testing/selftests/bpf/progs/trigger_bench.c
index 4ea0422d1042..3225b4aee8ff 100644
--- a/tools/testing/selftests/bpf/progs/trigger_bench.c
+++ b/tools/testing/selftests/bpf/progs/trigger_bench.c
@@ -1,10 +1,11 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2020 Facebook
-#include <linux/bpf.h>
+#include "vmlinux.h"
#include <asm/unistd.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include "bpf_misc.h"
+#include "bpf/usdt.bpf.h"
char _license[] SEC("license") = "GPL";
@@ -180,3 +181,10 @@ int bench_trigger_rawtp(void *ctx)
handle(ctx);
return 0;
}
+
+SEC("?usdt")
+int bench_trigger_usdt(void *ctx)
+{
+ inc_counter();
+ return 0;
+}
--
2.53.0
Powered by blists - more mailing lists