[bpf-next,v5,2/3] selftests/bpf: Factor out many args tests from tracing_struct

Commit Message

Pu Lehui July 2, 2024, 1:37 a.m. UTC

From: Pu Lehui <[e-mail]>

Factor out many args tests from tracing_struct and rename some function
names to make more sense.

Signed-off-by: Pu Lehui <[e-mail]>
---
 .../selftests/bpf/prog_tests/tracing_struct.c | 32 ++++++++--
 .../selftests/bpf/progs/tracing_struct.c      | 54 -----------------
 .../bpf/progs/tracing_struct_many_args.c      | 60 +++++++++++++++++++
 3 files changed, 88 insertions(+), 58 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/tracing_struct_many_args.c

Comments

Jiri Olsa July 2, 2024, 11:06 a.m. UTC | #1

On Tue, Jul 02, 2024 at 01:37:29AM +0000, Pu Lehui wrote:

SNIP

> +
> +static void test_struct_many_args(void)
> +{
> +	struct tracing_struct_many_args *skel;
> +	int err;
> +
> +	skel = tracing_struct_many_args__open_and_load();
> +	if (!ASSERT_OK_PTR(skel, "tracing_struct_many_args__open_and_load"))
> +		return;
> +
> +	err = tracing_struct_many_args__attach(skel);
> +	if (!ASSERT_OK(err, "tracing_struct_many_args__attach"))
> +		goto destroy_skel;
> +
> +	ASSERT_OK(trigger_module_test_read(256), "trigger_read");
> +
>  	ASSERT_EQ(skel->bss->t7_a, 16, "t7:a");
>  	ASSERT_EQ(skel->bss->t7_b, 17, "t7:b");
>  	ASSERT_EQ(skel->bss->t7_c, 18, "t7:c");
> @@ -74,12 +95,15 @@ static void test_fentry(void)
>  	ASSERT_EQ(skel->bss->t8_g, 23, "t8:g");
>  	ASSERT_EQ(skel->bss->t8_ret, 156, "t8 ret");
>  
> -	tracing_struct__detach(skel);
> +	tracing_struct_many_args__detach(skel);

nit, I know it's in the current code, but tracing_struct_many_args__destroy
will take care of the detach, so no need to call it explicitly

jirka


>  destroy_skel:
> -	tracing_struct__destroy(skel);
> +	tracing_struct_many_args__destroy(skel);
>  }
>  

SNIP

Pu Lehui July 2, 2024, 11:57 a.m. UTC | #2

On 2024/7/2 19:06, Jiri Olsa wrote:
> On Tue, Jul 02, 2024 at 01:37:29AM +0000, Pu Lehui wrote:
> 
> SNIP
> 
>> +
>> +static void test_struct_many_args(void)
>> +{
>> +	struct tracing_struct_many_args *skel;
>> +	int err;
>> +
>> +	skel = tracing_struct_many_args__open_and_load();
>> +	if (!ASSERT_OK_PTR(skel, "tracing_struct_many_args__open_and_load"))
>> +		return;
>> +
>> +	err = tracing_struct_many_args__attach(skel);
>> +	if (!ASSERT_OK(err, "tracing_struct_many_args__attach"))
>> +		goto destroy_skel;
>> +
>> +	ASSERT_OK(trigger_module_test_read(256), "trigger_read");
>> +
>>   	ASSERT_EQ(skel->bss->t7_a, 16, "t7:a");
>>   	ASSERT_EQ(skel->bss->t7_b, 17, "t7:b");
>>   	ASSERT_EQ(skel->bss->t7_c, 18, "t7:c");
>> @@ -74,12 +95,15 @@ static void test_fentry(void)
>>   	ASSERT_EQ(skel->bss->t8_g, 23, "t8:g");
>>   	ASSERT_EQ(skel->bss->t8_ret, 156, "t8 ret");
>>   
>> -	tracing_struct__detach(skel);
>> +	tracing_struct_many_args__detach(skel);
> 
> nit, I know it's in the current code, but tracing_struct_many_args__destroy
> will take care of the detach, so no need to call it explicitly

Alright, will resend a new version. Thanks

> 
> jirka
> 
> 
>>   destroy_skel:
>> -	tracing_struct__destroy(skel);
>> +	tracing_struct_many_args__destroy(skel);
>>   }
>>   
> 
> SNIP

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_struct.c b/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
index fe0fb0c9849a..2820fd912f2f 100644
--- a/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
+++ b/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
@@ -3,8 +3,9 @@ 
 
 #include <test_progs.h>
 #include "tracing_struct.skel.h"
+#include "tracing_struct_many_args.skel.h"
 
-static void test_fentry(void)
+static void test_struct_args(void)
 {
 	struct tracing_struct *skel;
 	int err;
@@ -55,6 +56,26 @@  static void test_fentry(void)
 
 	ASSERT_EQ(skel->bss->t6, 1, "t6 ret");
 
+	tracing_struct__detach(skel);
+destroy_skel:
+	tracing_struct__destroy(skel);
+}
+
+static void test_struct_many_args(void)
+{
+	struct tracing_struct_many_args *skel;
+	int err;
+
+	skel = tracing_struct_many_args__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "tracing_struct_many_args__open_and_load"))
+		return;
+
+	err = tracing_struct_many_args__attach(skel);
+	if (!ASSERT_OK(err, "tracing_struct_many_args__attach"))
+		goto destroy_skel;
+
+	ASSERT_OK(trigger_module_test_read(256), "trigger_read");
+
 	ASSERT_EQ(skel->bss->t7_a, 16, "t7:a");
 	ASSERT_EQ(skel->bss->t7_b, 17, "t7:b");
 	ASSERT_EQ(skel->bss->t7_c, 18, "t7:c");
@@ -74,12 +95,15 @@  static void test_fentry(void)
 	ASSERT_EQ(skel->bss->t8_g, 23, "t8:g");
 	ASSERT_EQ(skel->bss->t8_ret, 156, "t8 ret");
 
-	tracing_struct__detach(skel);
+	tracing_struct_many_args__detach(skel);
 destroy_skel:
-	tracing_struct__destroy(skel);
+	tracing_struct_many_args__destroy(skel);
 }
 
 void test_tracing_struct(void)
 {
-	test_fentry();
+	if (test__start_subtest("struct_args"))
+		test_struct_args();
+	if (test__start_subtest("struct_many_args"))
+		test_struct_many_args();
 }
diff --git a/tools/testing/selftests/bpf/progs/tracing_struct.c b/tools/testing/selftests/bpf/progs/tracing_struct.c
index 515daef3c84b..c435a3a8328a 100644
--- a/tools/testing/selftests/bpf/progs/tracing_struct.c
+++ b/tools/testing/selftests/bpf/progs/tracing_struct.c
@@ -18,11 +18,6 @@  struct bpf_testmod_struct_arg_3 {
 	int b[];
 };
 
-struct bpf_testmod_struct_arg_4 {
-	u64 a;
-	int b;
-};
-
 long t1_a_a, t1_a_b, t1_b, t1_c, t1_ret, t1_nregs;
 __u64 t1_reg0, t1_reg1, t1_reg2, t1_reg3;
 long t2_a, t2_b_a, t2_b_b, t2_c, t2_ret;
@@ -30,9 +25,6 @@  long t3_a, t3_b, t3_c_a, t3_c_b, t3_ret;
 long t4_a_a, t4_b, t4_c, t4_d, t4_e_a, t4_e_b, t4_ret;
 long t5_ret;
 int t6;
-long t7_a, t7_b, t7_c, t7_d, t7_e, t7_f_a, t7_f_b, t7_ret;
-long t8_a, t8_b, t8_c, t8_d, t8_e, t8_f_a, t8_f_b, t8_g, t8_ret;
-
 
 SEC("fentry/bpf_testmod_test_struct_arg_1")
 int BPF_PROG2(test_struct_arg_1, struct bpf_testmod_struct_arg_2, a, int, b, int, c)
@@ -138,50 +130,4 @@  int BPF_PROG2(test_struct_arg_11, struct bpf_testmod_struct_arg_3 *, a)
 	return 0;
 }
 
-SEC("fentry/bpf_testmod_test_struct_arg_7")
-int BPF_PROG2(test_struct_arg_12, __u64, a, void *, b, short, c, int, d,
-	      void *, e, struct bpf_testmod_struct_arg_4, f)
-{
-	t7_a = a;
-	t7_b = (long)b;
-	t7_c = c;
-	t7_d = d;
-	t7_e = (long)e;
-	t7_f_a = f.a;
-	t7_f_b = f.b;
-	return 0;
-}
-
-SEC("fexit/bpf_testmod_test_struct_arg_7")
-int BPF_PROG2(test_struct_arg_13, __u64, a, void *, b, short, c, int, d,
-	      void *, e, struct bpf_testmod_struct_arg_4, f, int, ret)
-{
-	t7_ret = ret;
-	return 0;
-}
-
-SEC("fentry/bpf_testmod_test_struct_arg_8")
-int BPF_PROG2(test_struct_arg_14, __u64, a, void *, b, short, c, int, d,
-	      void *, e, struct bpf_testmod_struct_arg_4, f, int, g)
-{
-	t8_a = a;
-	t8_b = (long)b;
-	t8_c = c;
-	t8_d = d;
-	t8_e = (long)e;
-	t8_f_a = f.a;
-	t8_f_b = f.b;
-	t8_g = g;
-	return 0;
-}
-
-SEC("fexit/bpf_testmod_test_struct_arg_8")
-int BPF_PROG2(test_struct_arg_15, __u64, a, void *, b, short, c, int, d,
-	      void *, e, struct bpf_testmod_struct_arg_4, f, int, g,
-	      int, ret)
-{
-	t8_ret = ret;
-	return 0;
-}
-
 char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/tracing_struct_many_args.c b/tools/testing/selftests/bpf/progs/tracing_struct_many_args.c
new file mode 100644
index 000000000000..3de4bb918178
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/tracing_struct_many_args.c
@@ -0,0 +1,60 @@ 
+// SPDX-License-Identifier: GPL-2.0
+#include <vmlinux.h>
+#include <bpf/bpf_tracing.h>
+#include <bpf/bpf_helpers.h>
+
+struct bpf_testmod_struct_arg_4 {
+	u64 a;
+	int b;
+};
+
+long t7_a, t7_b, t7_c, t7_d, t7_e, t7_f_a, t7_f_b, t7_ret;
+long t8_a, t8_b, t8_c, t8_d, t8_e, t8_f_a, t8_f_b, t8_g, t8_ret;
+
+SEC("fentry/bpf_testmod_test_struct_arg_7")
+int BPF_PROG2(test_struct_many_args_1, __u64, a, void *, b, short, c, int, d,
+	      void *, e, struct bpf_testmod_struct_arg_4, f)
+{
+	t7_a = a;
+	t7_b = (long)b;
+	t7_c = c;
+	t7_d = d;
+	t7_e = (long)e;
+	t7_f_a = f.a;
+	t7_f_b = f.b;
+	return 0;
+}
+
+SEC("fexit/bpf_testmod_test_struct_arg_7")
+int BPF_PROG2(test_struct_many_args_2, __u64, a, void *, b, short, c, int, d,
+	      void *, e, struct bpf_testmod_struct_arg_4, f, int, ret)
+{
+	t7_ret = ret;
+	return 0;
+}
+
+SEC("fentry/bpf_testmod_test_struct_arg_8")
+int BPF_PROG2(test_struct_many_args_3, __u64, a, void *, b, short, c, int, d,
+	      void *, e, struct bpf_testmod_struct_arg_4, f, int, g)
+{
+	t8_a = a;
+	t8_b = (long)b;
+	t8_c = c;
+	t8_d = d;
+	t8_e = (long)e;
+	t8_f_a = f.a;
+	t8_f_b = f.b;
+	t8_g = g;
+	return 0;
+}
+
+SEC("fexit/bpf_testmod_test_struct_arg_8")
+int BPF_PROG2(test_struct_many_args_4, __u64, a, void *, b, short, c, int, d,
+	      void *, e, struct bpf_testmod_struct_arg_4, f, int, g,
+	      int, ret)
+{
+	t8_ret = ret;
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";