On Mon, 27 Mar 2017 11:55:52 +0200 Arnd Bergmann <a...@arndb.de> wrote:
> On Mon, Mar 27, 2017 at 11:25 AM, kbuild test robot <l...@intel.com> wrote: > > Hi Deepa, > > > > [auto build test WARNING on tip/perf/core] > > [also build test WARNING on v4.11-rc4 next-20170327] > > [if your patch is applied to the wrong git tree, please drop us a note to > > help improve the system] > > > > url: > > https://github.com/0day-ci/linux/commits/Deepa-Dinamani/trace-Make-trace_hwlat-timestamp-y2038-safe/20170327-150010 > > config: x86_64-randconfig-n0-03271517 (attached as .config) > > compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4 > > reproduce: > > # save the attached .config to linux build tree > > make ARCH=x86_64 > > > > All warnings (new ones prefixed by >>): > > > > kernel/trace/trace_output.c: In function 'trace_hwlat_print': > >>> kernel/trace/trace_output.c:1168:5: warning: format '%lld' expects > >>> argument of type 'long long int', but argument 6 has type > >>> '__kernel_time_t' [-Wformat=] > > field->timestamp.tv_nsec); > > This happens on 64-bit architectures because 'struct timespec64' is defined to > be equal to 'struct timespec', which has a 'long' tv_sec rather than > 'long long'. > > A cast to 's64' is probably the best workaround. > > > kernel/trace/trace_output.c: In function 'trace_hwlat_raw': > > kernel/trace/trace_output.c:1202:5: warning: format '%lld' expects > > argument of type 'long long int', but argument 5 has type '__kernel_time_t' > > [-Wformat=] > > field->seqnum); > > Same here. > Actually, I believe that "%zd" will work. It's made to work with size_t which is long long on 32 and long on 64. -- Steve
