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authorAlexei Starovoitov <ast@kernel.org>2020-01-09 22:41:22 -0800
committerDaniel Borkmann <daniel@iogearbox.net>2020-01-10 17:20:07 +0100
commit6db2d81a46f99edb5690cf0b03bbe3b7f29dfd7b (patch)
tree4cdd4b38078ed60f308ebe16787f36cfd7dfd4e4 /tools/testing
parent7608e4db6ded8e965dd213baddedba9602959e7d (diff)
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selftests/bpf: Add a test for a large global function
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> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200110064124.1760511-5-ast@kernel.org
Diffstat (limited to 'tools/testing')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c2
-rw-r--r--tools/testing/selftests/bpf/progs/pyperf.h9
-rw-r--r--tools/testing/selftests/bpf/progs/pyperf_global.c5
3 files changed, 14 insertions, 2 deletions
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"