@@ -36,11 +36,11 @@ static void print_ksym(__u64 addr)
printf("%s;", sym->name);
}
-#define TASK_COMM_LEN 16
+#define TASK_COMM_LEN_16 16
struct key_t {
- char waker[TASK_COMM_LEN];
- char target[TASK_COMM_LEN];
+ char waker[TASK_COMM_LEN_16];
+ char target[TASK_COMM_LEN_16];
__u32 wret;
__u32 tret;
};
@@ -10,8 +10,9 @@
#include <bpf/libbpf.h>
#include "bpf_util.h"
-#define MAX_INDEX 64
-#define MAX_STARS 38
+#define MAX_INDEX 64
+#define MAX_STARS 38
+#define TASK_COMM_LEN_16 16
/* my_map, my_hist_map */
static int map_fd[2];
@@ -28,7 +29,7 @@ static void stars(char *str, long val, long max, int width)
}
struct task {
- char comm[16];
+ char comm[TASK_COMM_LEN_16];
__u64 pid_tgid;
__u64 uid_gid;
};
The task comm size is invisible to the bpf userspace, we have to define a new TASK_COMM_LEN_16 in the userspace. Use this macro instead of the hard-coded 16 can make it more grepable. Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Kees Cook <keescook@chromium.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Petr Mladek <pmladek@suse.com> --- samples/bpf/offwaketime_user.c | 6 +++--- samples/bpf/tracex2_user.c | 7 ++++--- 2 files changed, 7 insertions(+), 6 deletions(-)