On Fri, 16 Jul 2021 08:14:43 +0000 SeongJae Park <sj38.park@xxxxxxxxx> wrote: > +#define targetid_is_pid(ctx) \ > + (ctx->primitive.target_valid == damon_va_target_valid) > + I think this can be implemented as a static inline C function? --- a/mm/damon/dbgfs.c~mm-damon-implement-a-debugfs-based-user-space-interface-fix-fix +++ a/mm/damon/dbgfs.c @@ -97,8 +97,10 @@ out: return ret; } -#define targetid_is_pid(ctx) \ - (ctx->primitive.target_valid == damon_va_target_valid) +static inline bool targetid_is_pid(const struct damon_ctx *ctx) +{ + return ctx->primitive.target_valid == damon_va_target_valid; +} static ssize_t sprint_target_ids(struct damon_ctx *ctx, char *buf, ssize_t len) { We prefer this because it looks better, provides typechecking and can in some situations suppress unused variable warnings.