bpf.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Alexei Starovoitov <ast@kernel.org>
To: <davem@davemloft.net>
Cc: <daniel@iogearbox.net>, <netdev@vger.kernel.org>,
	<bpf@vger.kernel.org>, <kernel-team@fb.com>
Subject: [PATCH v2 bpf-next 5/7] selftests/bpf: Add a test for a large global function
Date: Wed, 8 Jan 2020 22:37:43 -0800	[thread overview]
Message-ID: <20200109063745.3154913-6-ast@kernel.org> (raw)
In-Reply-To: <20200109063745.3154913-1-ast@kernel.org>

test results:
pyperf50 with always_inlined the same function five times: processed 46378 insns
pyperf50 with global function: processed 6102 insns

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
---
 tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c | 2 ++
 tools/testing/selftests/bpf/progs/pyperf.h               | 9 +++++++--
 tools/testing/selftests/bpf/progs/pyperf_global.c        | 5 +++++
 3 files changed, 14 insertions(+), 2 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/pyperf_global.c

diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
index 9486c13af6b2..e9f2f12ba06b 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
@@ -48,6 +48,8 @@ void test_bpf_verif_scale(void)
 		{ "test_verif_scale2.o", BPF_PROG_TYPE_SCHED_CLS },
 		{ "test_verif_scale3.o", BPF_PROG_TYPE_SCHED_CLS },
 
+		{ "pyperf_global.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
+
 		/* full unroll by llvm */
 		{ "pyperf50.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
 		{ "pyperf100.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
diff --git a/tools/testing/selftests/bpf/progs/pyperf.h b/tools/testing/selftests/bpf/progs/pyperf.h
index 71d383cc9b85..e186899954e9 100644
--- a/tools/testing/selftests/bpf/progs/pyperf.h
+++ b/tools/testing/selftests/bpf/progs/pyperf.h
@@ -154,7 +154,12 @@ struct {
 	__uint(value_size, sizeof(long long) * 127);
 } stackmap SEC(".maps");
 
-static __always_inline int __on_event(struct pt_regs *ctx)
+#ifdef GLOBAL_FUNC
+__attribute__((noinline))
+#else
+static __always_inline
+#endif
+int __on_event(struct bpf_raw_tracepoint_args *ctx)
 {
 	uint64_t pid_tgid = bpf_get_current_pid_tgid();
 	pid_t pid = (pid_t)(pid_tgid >> 32);
@@ -254,7 +259,7 @@ static __always_inline int __on_event(struct pt_regs *ctx)
 }
 
 SEC("raw_tracepoint/kfree_skb")
-int on_event(struct pt_regs* ctx)
+int on_event(struct bpf_raw_tracepoint_args* ctx)
 {
 	int i, ret = 0;
 	ret |= __on_event(ctx);
diff --git a/tools/testing/selftests/bpf/progs/pyperf_global.c b/tools/testing/selftests/bpf/progs/pyperf_global.c
new file mode 100644
index 000000000000..079e78a7562b
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/pyperf_global.c
@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2020 Facebook */
+#define STACK_MAX_LEN 50
+#define GLOBAL_FUNC
+#include "pyperf.h"
-- 
2.23.0


  parent reply	other threads:[~2020-01-09  6:38 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-09  6:37 [PATCH v2 bpf-next 0/7] bpf: Introduce global functions Alexei Starovoitov
2020-01-09  6:37 ` [PATCH v2 bpf-next 1/7] libbpf: Sanitize " Alexei Starovoitov
2020-01-09  6:37 ` [PATCH v2 bpf-next 2/7] libbpf: Collect static vs global info about functions Alexei Starovoitov
2020-01-09  6:37 ` [PATCH v2 bpf-next 3/7] bpf: Introduce function-by-function verification Alexei Starovoitov
2020-01-09 18:09   ` Song Liu
2020-01-09 22:17     ` Alexei Starovoitov
2020-01-22  2:30       ` Alexei Starovoitov
2020-01-09  6:37 ` [PATCH v2 bpf-next 4/7] selftests/bpf: Add fexit-to-skb test for global funcs Alexei Starovoitov
2020-01-09  6:37 ` Alexei Starovoitov [this message]
2020-01-09  6:37 ` [PATCH v2 bpf-next 6/7] selftests/bpf: Modify a test to check global functions Alexei Starovoitov
2020-01-09  6:37 ` [PATCH v2 bpf-next 7/7] selftests/bpf: Add unit tests for " Alexei Starovoitov
2020-01-09 17:27   ` Song Liu
2020-01-09 22:09     ` Alexei Starovoitov
2020-01-09 22:35       ` Song Liu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200109063745.3154913-6-ast@kernel.org \
    --to=ast@kernel.org \
    --cc=bpf@vger.kernel.org \
    --cc=daniel@iogearbox.net \
    --cc=davem@davemloft.net \
    --cc=kernel-team@fb.com \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).