Em Tue, Oct 18, 2016 at 11:29:53AM -0400, Steven Rostedt escreveu: > On Tue, 18 Oct 2016 11:01:09 +0900 > Namhyung Kim <namhy...@kernel.org> wrote: > > > Hi Honggyu, > > > > You need to CC relevant maintainers when you send patches to LKML. > > For the libtraceevent, they are Arnaldo and Steven. You can use > > scripts/get_maintainer.pl for this job later. In addition running > > scripts/checkpatch.pl before sending patches is a good habit. > > > > Arnaldo and Steve, > > > > This is from uftrace building libtraceevent with the optimization flag > > and we want to fix the upstream as well. > > > > Acked-by: Steven Rostedt <rost...@goodmis.org>
So right after applying this patch I get these new warnings, investigating... [acme@jouet linux]$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/6.2.1/lto-wrapper Target: x86_64-redhat-linux Configured with: ../configure --enable-bootstrap --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin --enable-initfini-array --disable-libgcj --with-isl --enable-libmpx --enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 6.2.1 20160916 (Red Hat 6.2.1-2) (GCC) [acme@jouet linux]$ LD /tmp/build/perf/plugin_mac80211-in.o kbuffer-parse.c: In function ‘__old_next_event’: kbuffer-parse.c:339:27: warning: ‘length’ may be used uninitialized in this function [-Wmaybe-uninitialized] kbuf->next = kbuf->index + length; ~~~~~~~~~~~~^~~~~~~~ kbuffer-parse.c:297:15: note: ‘length’ was declared here unsigned int length; ^~~~~~ CC /tmp/build/perf/plugin_sched_switch.o CC /tmp/build/perf/run-command.o event-parse.c: In function ‘pevent_find_event_by_name’: event-parse.c:3513:21: warning: ‘event’ may be used uninitialized in this function [-Wmaybe-uninitialized] pevent->last_event = event; ~~~~~~~~~~~~~~~~~~~^~~~~~~ CC /tmp/build/perf/sigchain.o LD /tmp/build/perf/plugin_sched_switch-in.o CC /tmp/build/perf/plugin_function.o event-parse.c: In function ‘pevent_data_lat_fmt’: event-parse.c:5156:4: warning: ‘migrate_disable’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, "%d", migrate_disable); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ event-parse.c:5163:4: warning: ‘lock_depth’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, "%d", lock_depth); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ plugin_function.c: In function ‘function_handler’: plugin_function.c:133:6: warning: ‘index’ may be used uninitialized in this function [-Wmaybe-uninitialized] int index; ^~~~~ CC /tmp/build/perf/subcmd-config.o GEN perf-archive LD /tmp/build/perf/plugin_function-in.o GEN perf-with-kcore CC /tmp/build/perf/plugin_xen.o event-parse.c: In function ‘pevent_event_info’: event-parse.c:5003:7: warning: ‘len_arg’ may be used uninitialized in this function [-Wmaybe-uninitialized] trace_seq_printf(s, format, len_arg, (char)val); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ event-parse.c:4846:6: note: ‘len_arg’ was declared here int len_arg; ^~~~~~~ MKDIR /tmp/build/perf/util/
