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selftests/bpf: Suppress warning message of an unused variable.

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"r" is used to receive the return value of test_2 in bpf_testmod.c, but it
is not actually used. So, we remove "r" and change the return type to
"void".

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401300557.z5vzn8FM-lkp@intel.com/
Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20240204061204.1864529-1-thinker.li@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Kui-Feng Lee 2024-02-03 22:12:04 -08:00 committed by Martin KaFai Lau
parent 7e428638bd
commit 169e650069
3 changed files with 4 additions and 7 deletions
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6
tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
View File

@ -554,9 +554,8 @@ static const struct bpf_verifier_ops bpf_testmod_verifier_ops = {
static int bpf_dummy_reg(void *kdata)
{
struct bpf_testmod_ops *ops = kdata;
int r;
r = ops->test_2(4, 3);
ops->test_2(4, 3);
return 0;
}
@ -570,9 +569,8 @@ static int bpf_testmod_test_1(void)
return 0;
}
static int bpf_testmod_test_2(int a, int b)
static void bpf_testmod_test_2(int a, int b)
{
return 0;
}
static struct bpf_testmod_ops __bpf_testmod_ops = {

2
tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h
View File

@ -30,7 +30,7 @@ struct bpf_iter_testmod_seq {
struct bpf_testmod_ops {
int (*test_1)(void);
int (*test_2)(int a, int b);
void (*test_2)(int a, int b);
};
#endif /* _BPF_TESTMOD_H */

3
tools/testing/selftests/bpf/progs/struct_ops_module.c
View File

@ -16,10 +16,9 @@ int BPF_PROG(test_1)
}
SEC("struct_ops/test_2")
int BPF_PROG(test_2, int a, int b)
void BPF_PROG(test_2, int a, int b)
{
test_2_result = a + b;
return a + b;
}
SEC(".struct_ops.link")