Commit 71135b77 authored by Daniel T. Lee's avatar Daniel T. Lee Committed by Martin KaFai Lau
Browse files

samples/bpf: replace meaningless counter with tracex4 



Currently, compiling samples/bpf with LLVM warns about the unused but
set variable with tracex4_user.

    ./samples/bpf/tracex4_user.c:54:14:
    warning: variable 'i' set but not used [-Wunused-but-set-variable]
        int map_fd, i, j = 0;
                    ^
                    1 warning generated.

This commit resolve this compiler warning by replacing the meaningless
counter.

Signed-off-by: default avatarDaniel T. Lee <danieltimlee@gmail.com>
Acked-by: default avatarYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20221218061453.6287-3-danieltimlee@gmail.com


Signed-off-by: default avatarMartin KaFai Lau <martin.lau@kernel.org>
parent 13aa2a92

samples/bpf/tracex4_user.c

+2 −2
Original line number Diff line number Diff line
@@ -51,7 +51,7 @@ int main(int ac, char **argv) 
	struct bpf_program *prog;

	struct bpf_object *obj;

	char filename[256];

	int map_fd, i, j = 0;

	int map_fd, j = 0;



	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);

	obj = bpf_object__open_file(filename, NULL);
@@ -82,7 +82,7 @@ int main(int ac, char **argv) 
		j++;

	}



	for (i = 0; ; i++) {

	while (1) {

		print_old_objects(map_fd);

		sleep(1);

	}