* linux-next: build warnings from perf build in Linus' tree
@ 2020-08-26 22:38 Stephen Rothwell
2020-08-26 23:10 ` Stephen Rothwell
0 siblings, 1 reply; 3+ messages in thread
From: Stephen Rothwell @ 2020-08-26 22:38 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: Linux Next Mailing List, Linux Kernel Mailing List
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Hi all,
Doing the perf native (PowerPC le) build today produces these warnings:
util/dsos.c: In function 'dsos__findnew_id':
util/dsos.c:39:14: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
39 | dso->id.maj = id->maj;
| ~~~~~~~~~~~~^~~~~~~~~
util/namespaces.c: In function 'nsinfo__new':
util/namespaces.c:139:12: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
139 | nsi->pid = pid;
| ~~~~~~~~~^~~~~
util/evlist.c: In function 'perf_evlist__set_id_pos':
util/evlist.c:116:17: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
116 | evlist->id_pos = first->id_pos;
| ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
util/annotate.c: In function 'annotation__init_column_widths':
util/annotate.c:2701:44: note: the layout of aggregates containing vectors with 2-byte alignment has changed in GCC 5
2701 | notes->widths.addr = notes->widths.target =
| ~~~~~~~~~~~~~~~~~~~~~^
2702 | notes->widths.min_addr = hex_width(symbol__size(sym));
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
util/session.c: In function 'perf_event__read_swap':
util/session.c:620:20: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
620 | event->read.pid = bswap_32(event->read.pid);
| ^
util/jitdump.c: In function 'jit_process':
util/jitdump.c:329:23: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
329 | jr->load.pid = bswap_32(jr->load.pid);
| ^
util/auxtrace.c: In function 'auxtrace_queues__add_buffer.part.0':
util/auxtrace.c:360:12: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
360 | static int auxtrace_queues__add_buffer(struct auxtrace_queues *queues,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
util/synthetic-events.c: In function 'perf_event__synthesize_sample':
util/synthetic-events.c:1441:22: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
1441 | u.val32[0] = sample->pid;
| ~~~~~~^~~~~
util/probe-finder.c: In function 'line_range_search_cb':
util/probe-finder.c:1887:17: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
1887 | lr->start = lf->lno_s;
| ~~^~~~~~~
util/machine.c: In function 'machine__process_mmap2_event':
util/machine.c:1716:5: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
1716 | int machine__process_mmap2_event(struct machine *machine,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
util/intel-pt-decoder/intel-pt-decoder.c: In function 'intel_pt_get_next_packet':
util/intel-pt-decoder/intel-pt-decoder.c:916:21: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
916 | decoder->pkt_step = ret;
| ~~~~~~~~~~~~~~~~~~^~~~~
util/pmu.c: In function '__perf_pmu__new_alias':
util/pmu.c:308:12: note: the layout of aggregates containing vectors with 2-byte alignment has changed in GCC 5
308 | static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
| ^~~~~~~~~~~~~~~~~~~~~
util/intel-pt.c: In function 'intel_pt_synth_pebs_sample':
util/intel-pt.c:1284:14: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
1284 | sample->pid = ptq->pid;
| ~~~~~~~~~~~~^~~~~~~~~~
util/parse-events.c: In function 'parse_events__modifier_event':
util/parse-events.c:1885:5: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
1885 | int parse_events__modifier_event(struct list_head *list, char *str, bool add)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/sfr/next/next/tools/perf/util/namespaces.c: In function 'nsinfo__new':
/home/sfr/next/next/tools/perf/util/namespaces.c:139:12: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
139 | nsi->pid = pid;
| ~~~~~~~~~^~~~~
I assume they are because I have changed all my toolcahins to gcc
v10 today.
--
Cheers,
Stephen Rothwell
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* Re: linux-next: build warnings from perf build in Linus' tree
2020-08-26 22:38 linux-next: build warnings from perf build in Linus' tree Stephen Rothwell
@ 2020-08-26 23:10 ` Stephen Rothwell
2020-09-01 17:36 ` Arnaldo Carvalho de Melo
0 siblings, 1 reply; 3+ messages in thread
From: Stephen Rothwell @ 2020-08-26 23:10 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: Linux Next Mailing List, Linux Kernel Mailing List
[-- Attachment #1: Type: text/plain, Size: 570 bytes --]
Hi all,
On Thu, 27 Aug 2020 08:38:39 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> /home/sfr/next/next/tools/perf/util/namespaces.c: In function 'nsinfo__new':
> /home/sfr/next/next/tools/perf/util/namespaces.c:139:12: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
> 139 | nsi->pid = pid;
> | ~~~~~~~~~^~~~~
>
> I assume they are because I have changed all my toolcahins to gcc
> v10 today.
From gcc v9, so I have no idea what the GGC 5 note is about.
--
Cheers,
Stephen Rothwell
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: linux-next: build warnings from perf build in Linus' tree
2020-08-26 23:10 ` Stephen Rothwell
@ 2020-09-01 17:36 ` Arnaldo Carvalho de Melo
0 siblings, 0 replies; 3+ messages in thread
From: Arnaldo Carvalho de Melo @ 2020-09-01 17:36 UTC (permalink / raw)
To: Stephen Rothwell
Cc: Peter Zijlstra, Ingo Molnar, Linux Next Mailing List,
Linux Kernel Mailing List
Em Thu, Aug 27, 2020 at 09:10:09AM +1000, Stephen Rothwell escreveu:
> Hi all,
>
> On Thu, 27 Aug 2020 08:38:39 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> >
> > /home/sfr/next/next/tools/perf/util/namespaces.c: In function 'nsinfo__new':
> > /home/sfr/next/next/tools/perf/util/namespaces.c:139:12: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
> > 139 | nsi->pid = pid;
> > | ~~~~~~~~~^~~~~
> >
> > I assume they are because I have changed all my toolcahins to gcc
> > v10 today.
>
> From gcc v9, so I have no idea what the GGC 5 note is about.
Yeah, strange warning, and I reproduced it here with a container:
[perfbuilder@five x-powerpc64el]$ dm ubuntu:20.04-x-powerpc64el
Tue 01 Sep 2020 02:23:28 PM -03
# export PERF_TARBALL=http://192.168.122.1/perf/perf-5.9.0-rc1.tar.xz
# dm ubuntu:20.04-x-powerpc64el
1 37.44 ubuntu:20.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu 10-20200411-0ubuntu1) 10.0.1 20200411 (experimental) [master revision bb87d5cc77d:75961caccb7:f883c46b4877f637e0fa5025b4d6b5c9040ec566]
2 37.4383
[perfbuilder@five x-powerpc64el]$
But then the build goes thru and finishes ok :-\
CC /tmp/build/perf/util/perf-hooks.o
FLEX /tmp/build/perf/util/parse-events-flex.c
FLEX /tmp/build/perf/util/pmu-flex.c
util/synthetic-events.c: In function 'perf_event__synthesize_sample':
util/synthetic-events.c:1441:22: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
1441 | u.val32[0] = sample->pid;
| ~~~~~~^~~~~
CC /tmp/build/perf/util/pmu-bison.o
FLEX /tmp/build/perf/util/expr-flex.c
CC /tmp/build/perf/util/expr-bison.o
CC /tmp/build/perf/util/parse-events.o
CC /tmp/build/perf/util/parse-events-flex.o
CC /tmp/build/perf/util/pmu.o
CC /tmp/build/perf/util/pmu-flex.o
CC /tmp/build/perf/util/expr-flex.o
CC /tmp/build/perf/util/expr.o
util/jitdump.c: In function 'jit_process':
util/jitdump.c:329:23: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
329 | jr->load.pid = bswap_32(jr->load.pid);
| ^
util/probe-finder.c: In function 'line_range_search_cb':
util/probe-finder.c:1887:17: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
1887 | lr->start = lf->lno_s;
| ~~^~~~~~~
util/pmu.c: In function '__perf_pmu__new_alias':
util/pmu.c:308:12: note: the layout of aggregates containing vectors with 2-byte alignment has changed in GCC 5
308 | static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
| ^~~~~~~~~~~~~~~~~~~~~
LD /tmp/build/perf/util/intel-pt-decoder/perf-in.o
util/parse-events.c: In function 'parse_events__modifier_event':
util/parse-events.c:1892:5: note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
1892 | int parse_events__modifier_event(struct list_head *list, char *str, bool add)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
LD /tmp/build/perf/util/perf-in.o
LD /tmp/build/perf/perf-in.o
LINK /tmp/build/perf/perf
make: Leaving directory '/git/linux/tools/perf'
+ set +o xtrace
/rx_and_build.sh: 38: powerpc64le-linux-gnu-clang: not found
[perfbuilder@five x-powerpc64el]$
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2020-08-26 23:10 ` Stephen Rothwell
2020-09-01 17:36 ` Arnaldo Carvalho de Melo
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