On (02/15/16 14:08), Sergey Senozhatsky wrote: > > will this compile with !CONFIG_TRACEPOINTS config? > uh.. sorry, was composed in email client. seems the correct way to do it is +#if defined CONFIG_DEBUG_PAGE_REF && defined CONFIG_TRACEPOINTS #include <linux/tracepoint-defs.h> #define page_ref_tracepoint_active(t) static_key_false(&(t).key) extern struct tracepoint __tracepoint_page_ref_set; ... extern void __page_ref_set(struct page *page, int v); ... #else #define page_ref_tracepoint_active(t) false static inline void __page_ref_set(struct page *page, int v) { } ... #endif or add a dependency of PAGE_REF on CONFIG_TRACEPOINTS in Kconfig. -ss -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html