On Thu, Feb 27, 2014 at 05:02:48PM +0530, Rashika Kheria wrote: > Add prototype declaration of function to header file > include/linux/perf_event.h because it is used by more than one file. > > This eliminates the following warning in kernel/events/core.c: > kernel/events/core.c:3743:13: warning: no previous prototype for > ‘arch_perf_update_userpage’ [-Wmissing-prototypes]
# git grep arch_perf_update_userpage arch/x86/kernel/cpu/perf_event.c:void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) kernel/events/core.c:void __weak arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) kernel/events/core.c: arch_perf_update_userpage(userpg, now); There's two definitions; one weak, and one usage site. What gives? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
