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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

  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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