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SubjectRe: [PATCH 6/9] perf record: Support synthesizing cgroup events
Em Mon, Mar 30, 2020 at 01:43:12PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Mon, Mar 30, 2020 at 01:30:58PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Wed, Mar 25, 2020 at 09:45:33PM +0900, Namhyung Kim escreveu:
> > > Synthesize cgroup events by iterating cgroup filesystem directories.
> > > The cgroup event only saves the portion of cgroup path after the mount
> > > point and the cgroup id (which actually is a file handle).
> >
> > Breaks the build on alpine linux (musl libc):
> >
> > CC /tmp/build/perf/util/srccode.o
> > CC /tmp/build/perf/util/synthetic-events.o
> > util/synthetic-events.c: In function 'perf_event__synthesize_cgroup':
> > util/synthetic-events.c:427:22: error: field 'fh' has incomplete type
> > struct file_handle fh;
> > ^
> > util/synthetic-events.c:441:6: error: implicit declaration of function 'name_to_handle_at' [-Werror=implicit-function-declaration]
> > if (name_to_handle_at(AT_FDCWD, path, &handle.fh, &mount_id, 0) < 0) {
> > ^
> > util/synthetic-events.c:441:2: error: nested extern declaration of 'name_to_handle_at' [-Werror=nested-externs]
> > if (name_to_handle_at(AT_FDCWD, path, &handle.fh, &mount_id, 0) < 0) {
> > ^
> > CC /tmp/build/perf/util/data.o
> > cc1: all warnings being treated as errors
> > mv: can't rename '/tmp/build/perf/util/.synthetic-events.o.tmp': No such file or directory
> >
> >
> > I'm trying to fix
>
> musl libc up to 1.2.21 (IIRC) lacks name_to_handle_at and its structs,
> then from the one that is in alpine linux 3.10 the error changes to:
>
> CC /tmp/build/perf/util/cloexec.o
> util/synthetic-events.c:427:22: error: field 'fh' with variable sized type 'struct file_handle' not at the end of a struct or class is a GNU
> extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
> struct file_handle fh;
> ^
> 1 error generated.
> mv: can't rename '/tmp/build/perf/util/.synthetic-events.o.tmp': No such file or directory
> make[4]: *** [/git/linux/tools/build/Makefile.build:97: /tmp/build/perf/util/synthetic-events.o] Error 1
> make[4]: *** Waiting for unfinished jobs....
> make[3]: *** [/git/linux/tools/build/Makefile.build:139: util] Error 2
> make[2]: *** [Makefile.perf:617: /tmp/build/perf/perf-in.o] Error 2
> make[1]: *** [Makefile.perf:225: sub-make] Error 2
> make: *** [Makefile:70: all] Error 2
> make: Leaving directory '/git/linux/tools/perf'
> + exit 1
> [root@quaco ~]#
>
> So probably we'll need a feature test to catch this and do some
> workaround or disable the feature on such systems, providing some
> warning.
>
> I left the container build tests running to see if some other system has
> problems with this, perhaps the ones with uCLibc or some older glibc,
> we'll see.
>
> So far all the alpine versions failed with the above problems and ALT
> Linux p8 and p9 built without problems.

13 129.90 amazonlinux:1 : Ok gcc (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2), clang version 3.6.2 (tags/RELEASE_362/final)
14 192.36 amazonlinux:2 : Ok gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 7.0.1 (Amazon Linux 2 7.0.1-1.amzn2.0.2)
15 16.02 android-ndk:r12b-arm : FAIL arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
16 16.35 android-ndk:r15c-arm : FAIL arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
17 13.42 centos:5 : FAIL gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-55)
18 18.39 centos:6 : FAIL gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23)
19 54.36 centos:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39)
20 215.20 centos:8 : Ok gcc (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4), clang version 8.0.1 (Red Hat 8.0.1-1.module_el8.1.0+215+a01033fb)
21 54.41 clearlinux:latest : Ok gcc (Clear Linux OS for Intel Architecture) 9.2.1 20200214 gcc_9_2_0_release-615-g7866f9ebf1, clang version 9.0.1
22 139.44 debian:8 : Ok gcc (Debian 4.9.2-10+deb8u2) 4.9.2, Debian clang version 3.5.0-10 (tags/RELEASE_350/final) (based on LLVM 3.5.0)
23 153.99 debian:9 : Ok gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516, clang version 3.8.1-24 (tags/RELEASE_381/final)
24 157.00 debian:10 : Ok gcc (Debian 8.3.0-6) 8.3.0, clang version 7.0.1-8 (tags/RELEASE_701/final)
25 170.15 debian:experimental : Ok gcc (Debian 9.2.1-28) 9.2.1 20200203, clang version 8.0.1-7 (tags/RELEASE_801/final)
26 28.45 debian:experimental-x-arm64 : FAIL aarch64-linux-gnu-gcc (Debian 8.3.0-19) 8.3.0

This one was something else, and I bet the other arm64 were the same
thing:

CC /tmp/build/perf/tests/parse-events.o
arch/arm64/util/machine.c: In function 'arch__symbols__fixup_end':
arch/arm64/util/machine.c:19:7: error: implicit declaration of function 'strchr' [-Werror=implicit-function-declaration]
if ((strchr(p->name, '[') && strchr(c->name, '[') == NULL) ||
^~~~~~
arch/arm64/util/machine.c:19:7: error: incompatible implicit declaration of built-in function 'strchr' [-Werror]
arch/arm64/util/machine.c:19:7: note: include '<string.h>' or provide a declaration of 'strchr'
arch/arm64/util/machine.c:6:1:
+#include <string.h>

arch/arm64/util/machine.c:19:7:
if ((strchr(p->name, '[') && strchr(c->name, '[') == NULL) ||
^~~~~~
cc1: all warnings being treated as errors
mv: cannot stat '/tmp/build/perf/arch/arm64/util/.machine.o.tmp': No such file or directory
make[6]: *** [/git/linux/tools/build/Makefile.build:97: /tmp/build/perf/arch/arm64/util/machine.o] Error 1


27 60.23 debian:experimental-x-mips : Ok mips-linux-gnu-gcc (Debian 8.3.0-19) 8.3.0
28 54.38 debian:experimental-x-mips64 : Ok mips64-linux-gnuabi64-gcc (Debian 9.2.1-24) 9.2.1 20200117
29 60.29 debian:experimental-x-mipsel : Ok mipsel-linux-gnu-gcc (Debian 9.2.1-8) 9.2.1 20190909
30 51.92 fedora:20 : Ok gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-7)
31 54.05 fedora:22 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.5.0 (tags/RELEASE_350/final)
32 142.15 fedora:23 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.7.0 (tags/RELEASE_370/final)
33 160.24 fedora:24 : Ok gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1), clang version 3.8.1 (tags/RELEASE_381/final)
34 20.46 fedora:24-x-ARC-uClibc : FAIL arc-linux-gcc (ARCompact ISA Linux uClibc toolchain 2017.09-rc2) 7.1.1 20170710
35 161.31 fedora:25 : Ok gcc (GCC) 6.4.1 20170727 (Red Hat 6.4.1-1), clang version 3.9.1 (tags/RELEASE_391/final)
36 182.38 fedora:26 : Ok gcc (GCC) 7.3.1 20180130 (Red Hat 7.3.1-2), clang version 4.0.1 (tags/RELEASE_401/final)
37 178.68 fedora:27 : Ok gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 5.0.2 (tags/RELEASE_502/final)
38 199.12 fedora:28 : Ok gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 6.0.1 (tags/RELEASE_601/final)
39 209.86 fedora:29 : Ok gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 7.0.1 (Fedora 7.0.1-6.fc29)
40 213.17 fedora:30 : Ok gcc (GCC) 9.2.1 20190827 (Red Hat 9.2.1-1), clang version 8.0.0 (Fedora 8.0.0-3.fc30)
41 53.64 fedora:30-x-ARC-glibc : Ok arc-linux-gcc (ARC HS GNU/Linux glibc toolchain 2019.03-rc1) 8.3.1 20190225
42 20.78 fedora:30-x-ARC-uClibc : FAIL arc-linux-gcc (ARCv2 ISA Linux uClibc toolchain 2019.03-rc1) 8.3.1 20190225

Same thing as with fedora:24-x-ARC-uClibc:

CC /tmp/build/perf/util/tsc.o
util/synthetic-events.c: In function 'perf_event__synthesize_cgroup':
util/synthetic-events.c:427:22: error: field 'fh' has incomplete type
struct file_handle fh;
^~
util/synthetic-events.c:441:6: error: implicit declaration of function 'name_to_handle_at' [-Werror=implicit-function-declaration]
if (name_to_handle_at(AT_FDCWD, path, &handle.fh, &mount_id, 0) < 0) {
^~~~~~~~~~~~~~~~~
util/synthetic-events.c:441:6: error: nested extern declaration of 'name_to_handle_at' [-Werror=nested-externs]
CC /tmp/build/perf/util/cloexec.o
CC /tmp/build/perf/util/call-path.o
cc1: all warnings being treated as errors


43 215.94 fedora:31 : Ok gcc (GCC) 9.2.1 20190827 (Red Hat 9.2.1-1), clang version 9.0.1 (Fedora 9.0.1-2.fc31)
44 181.57 fedora:32 : Ok gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8), clang version 10.0.0 (Fedora 10.0.0-0.1.rc2.fc32)
45 185.19 fedora:rawhide : Ok gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8), clang version 10.0.0 (Fedora 10.0.0-0.3.rc2.fc33)
46 62.84 gentoo-stage3-amd64:latest : Ok gcc (Gentoo 9.2.0-r2 p3) 9.2.0
47 139.89 mageia:5 : Ok gcc (GCC) 4.9.2, clang version 3.5.2 (tags/RELEASE_352/final)
48 165.42 mageia:6 : Ok gcc (Mageia 5.5.0-1.mga6) 5.5.0, clang version 3.9.1 (tags/RELEASE_391/final)
49 217.63 mageia:7 : Ok gcc (Mageia 8.3.1-0.20190524.1.mga7) 8.3.1 20190524, clang version 8.0.0 (Mageia 8.0.0-1.mga7)
50 221.42 manjaro:latest : Ok gcc (GCC) 9.2.0, clang version 9.0.0 (tags/RELEASE_900/final)
51 219.95 openmandriva:cooker : Ok gcc (GCC) 10.0.0 20200216 (OpenMandriva), clang version 10.0.0
52 188.84 opensuse:15.0 : Ok gcc (SUSE Linux) 7.4.1 20190424 [gcc-7-branch revision 270538], clang version 5.0.1 (tags/RELEASE_501/final 312548)
53 206.42 opensuse:15.1 : Ok gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238)
54 205.61 opensuse:15.2 : Ok gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238)
55 183.74 opensuse:42.3 : Ok gcc (SUSE Linux) 4.8.5, clang version 3.8.0 (tags/RELEASE_380/final 262553)
56 195.58 opensuse:tumbleweed : Ok gcc (SUSE Linux) 9.2.1 20200128 [revision 83f65674e78d97d27537361de1a9d74067ff228d], clang version 9.0.1
57 18.33 oraclelinux:6 : FAIL gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23.0.1)
58 52.69 oraclelinux:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39.0.3)
59 218.36 oraclelinux:8 : Ok gcc (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4.5.0.5), clang version 8.0.1 (Red Hat 8.0.1-1.0.1.module+el8.1.0+5428+345cee14)
60 45.57 ubuntu:12.04 : Ok gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0)
61 54.51 ubuntu:14.04 : Ok gcc (Ubuntu 4.8.4-2ubuntu1~14.04.4) 4.8.4
62 151.39 ubuntu:16.04 : Ok gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609, clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
63 47.30 ubuntu:16.04-x-arm : Ok arm-linux-gnueabihf-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
64 24.91 ubuntu:16.04-x-arm64 : FAIL aarch64-linux-gnu-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609

Same thing as with debian experimental cross build, will fix this one


CC /tmp/build/perf/bench/mem-functions.o
CC /tmp/build/perf/tests/parse-events.o
arch/arm64/util/machine.c: In function 'arch__symbols__fixup_end':
arch/arm64/util/machine.c:19:7: error: implicit declaration of function 'strchr' [-Werror=implicit-function-declaration]
if ((strchr(p->name, '[') && strchr(c->name, '[') == NULL) ||
^
arch/arm64/util/machine.c:19:7: error: incompatible implicit declaration of built-in function 'strchr' [-Werror]
arch/arm64/util/machine.c:19:7: note: include '<string.h>' or provide a declaration of 'strchr'
cc1: all warnings being treated as errors
MKDIR /tmp/build/perf/ui/
mv: cannot stat '/tmp/build/perf/arch/arm64/util/.machine.o.tmp': No such file or directory
/git/linux/tools/build/Makefile.build:96: recipe for target '/tmp/build/perf/arch/arm64/util/machine.o' failed
make[6]: *** [/tmp/build/perf/arch/arm64/util/machine.o] Error 1
CC /tmp/build/perf/ui/setup.o
/git/linux/tools/build/Makefile.build:139: recipe for target 'util' failed
make[5]: *** [util] Error 2
/git/linux/tools/build/Makefile.build:139: recipe for target 'arm64' failed
make[4]: *** [arm64] Error 2
/git/linux/tools/build/Makefile.build:139: recipe for target 'arch' failed
make[3]: *** [arch] Error 2
make[3]: *** Waiting for unfinished jobs....


65 47.00 ubuntu:16.04-x-powerpc : Ok powerpc-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
66 48.04 ubuntu:16.04-x-powerpc64 : Ok powerpc64-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
67 47.52 ubuntu:16.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
68 46.10 ubuntu:16.04-x-s390 : Ok s390x-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
69 182.60 ubuntu:18.04 : Ok gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0, clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
70 50.66 ubuntu:18.04-x-arm : Ok arm-linux-gnueabihf-gcc (Ubuntu/Linaro 7.4.0-1ubuntu1~18.04.1) 7.4.0
71 26.81 ubuntu:18.04-x-arm64 : FAIL aarch64-linux-gnu-gcc (Ubuntu/Linaro 7.4.0-1ubuntu1~18.04.1) 7.4.0
72 38.36 ubuntu:18.04-x-m68k : Ok m68k-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
73 50.79 ubuntu:18.04-x-powerpc : Ok powerpc-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
74 57.69 ubuntu:18.04-x-powerpc64 : Ok powerpc64-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
75 56.70 ubuntu:18.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
76 147.10 ubuntu:18.04-x-riscv64 : Ok riscv64-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
77 43.49 ubuntu:18.04-x-s390 : Ok s390x-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
78 52.88 ubuntu:18.04-x-sh4 : Ok sh4-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
79 45.57 ubuntu:18.04-x-sparc64 : Ok sparc64-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
80 168.41 ubuntu:18.10 : Ok gcc (Ubuntu 8.3.0-6ubuntu1~18.10.1) 8.3.0, clang version 7.0.0-3 (tags/RELEASE_700/final)
81 177.55 ubuntu:19.04 : Ok gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0, clang version 8.0.0-3 (tags/RELEASE_800/final)
82 45.12 ubuntu:19.04-x-alpha : Ok alpha-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0
83 28.06 ubuntu:19.04-x-arm64 : FAIL aarch64-linux-gnu-gcc (Ubuntu/Linaro 8.3.0-6ubuntu1) 8.3.0
84 43.21 ubuntu:19.04-x-hppa : Ok hppa-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0
85 147.65 ubuntu:19.10 : FAIL gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008, clang version 9.0.0-2 (tags/RELEASE_900/final)

This should be something else, will check.

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