From: Delyan Kratunov <delyank@fb.com>
To: "daniel@iogearbox.net" <daniel@iogearbox.net>,
"ast@kernel.org" <ast@kernel.org>,
"andrii@kernel.org" <andrii@kernel.org>,
"bpf@vger.kernel.org" <bpf@vger.kernel.org>
Subject: [PATCH bpf-next v3 4/5] libbpf: add support for sleepable uprobe programs
Date: Fri, 13 May 2022 01:22:39 +0000 [thread overview]
Message-ID: <3dc6d472dcb2c50846cda776f122fc99a0e3e277.1652404870.git.delyank@fb.com> (raw)
In-Reply-To: <cover.1652404870.git.delyank@fb.com>
Add section mappings for u(ret)probe.s programs.
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Delyan Kratunov <delyank@fb.com>
---
tools/lib/bpf/libbpf.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 4867a930628b..54ee6e422f60 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -9005,8 +9005,10 @@ static const struct bpf_sec_def section_defs[] = {
SEC_DEF("sk_reuseport", SK_REUSEPORT, BPF_SK_REUSEPORT_SELECT, SEC_ATTACHABLE | SEC_SLOPPY_PFX),
SEC_DEF("kprobe+", KPROBE, 0, SEC_NONE, attach_kprobe),
SEC_DEF("uprobe+", KPROBE, 0, SEC_NONE, attach_uprobe),
+ SEC_DEF("uprobe.s+", KPROBE, 0, SEC_SLEEPABLE, attach_uprobe),
SEC_DEF("kretprobe+", KPROBE, 0, SEC_NONE, attach_kprobe),
SEC_DEF("uretprobe+", KPROBE, 0, SEC_NONE, attach_uprobe),
+ SEC_DEF("uretprobe.s+", KPROBE, 0, SEC_SLEEPABLE, attach_uprobe),
SEC_DEF("kprobe.multi+", KPROBE, BPF_TRACE_KPROBE_MULTI, SEC_NONE, attach_kprobe_multi),
SEC_DEF("kretprobe.multi+", KPROBE, BPF_TRACE_KPROBE_MULTI, SEC_NONE, attach_kprobe_multi),
SEC_DEF("usdt+", KPROBE, 0, SEC_NONE, attach_usdt),
@@ -11282,7 +11284,8 @@ static int attach_uprobe(const struct bpf_program *prog, long cookie, struct bpf
break;
case 3:
case 4:
- opts.retprobe = strcmp(probe_type, "uretprobe") == 0;
+ opts.retprobe = strcmp(probe_type, "uretprobe") == 0 ||
+ strcmp(probe_type, "uretprobe.s") == 0;
if (opts.retprobe && offset != 0) {
pr_warn("prog '%s': uretprobes do not support offset specification\n",
prog->name);
--
2.35.3
next prev parent reply other threads:[~2022-05-13 1:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-13 1:22 [PATCH bpf-next v3 0/5] sleepable uprobe support Delyan Kratunov
2022-05-13 1:22 ` [PATCH bpf-next v3 3/5] bpf: allow sleepable uprobe programs to attach Delyan Kratunov
2022-05-13 1:22 ` [PATCH bpf-next v3 1/5] bpf: move bpf_prog to bpf.h Delyan Kratunov
2022-05-13 1:22 ` Delyan Kratunov [this message]
2022-05-13 1:22 ` [PATCH bpf-next v3 2/5] bpf: implement sleepable uprobes by chaining gps Delyan Kratunov
2022-05-13 16:00 ` Daniel Borkmann
2022-05-13 17:05 ` Delyan Kratunov
2022-05-13 1:22 ` [PATCH bpf-next v3 5/5] selftests/bpf: add tests for sleepable (uk)probes Delyan Kratunov
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