Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-30 Thread Murilo Opsfelder Araujo 
On 04/30/2018 02:49 PM, Greg Kroah-Hartman wrote:
> On Mon, Apr 30, 2018 at 10:20:08AM -0700, Greg Kroah-Hartman wrote:
>> On Mon, Apr 30, 2018 at 02:11:55PM -0300, Murilo Opsfelder Araujo wrote:
>>> On 04/11/2018 05:21 PM, Murilo Opsfelder Araújo wrote:
 On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
>> Using linux-3.18.y branch, perf build fails with the following:
>>
>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
>> prefix=/usr DESTDIR=/tmp/builddir/build all
>> [...]
>> util/session.c: In function ‘__perf_session__process_pipe_events’:
>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
>> function)
>>   ordered_events__set_copy_on_queue(oe, true);
>> ^
>> util/session.c:1093:36: note: each undeclared identifier is reported 
>> only once for each function it appears in
>>
>> This patch fixes it for linux-3.18.y branch.
>
> Why is this failing now?  Has it always been broken?  Is there an
> upstream patch that fixed this instead?
>

 Hi, Greg.

 We've caught this build issue this week. I'm not sure since when it's
 failing.

 The upstream patch that fixes this is:

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d

 commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
 Author: Arnaldo Carvalho de Melo 
 Date:   Tue Mar 3 11:48:12 2015 -0300

 perf ordered_events: Untangle from perf_session

 But it doesn't apply straightforwardly.  At
 fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
 struct are slightly different from linux-3.18.y.

 A list of upstream patches for a clean backport (I think) would be:

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d

 Do you prefer all above patches backported to linux-3.18.y or just the
 one-line fix I sent?

>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in 
>> pipe mode")
>
> Was this just a bad backport?

 Some patches were left behind, I guess.

>
> thanks,
>
> greg k-h
>>>
>>> Hi, Greg.
>>>
>>> I've realized that perf build on v3.18.107 is still broken, actually, it
>>> got a bit worse than v3.18.104.
>>>
>>> After applying my patch to fix the undeclared 'oe', perf build fails
>>> with the following errors:
>>>
>>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1
>>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1
>>> prefix=/usr DESTDIR=/tmp/builddir/build all
>>> [...]
>>> tests/code-reading.c: In function ‘read_object_code’:
>>> tests/code-reading.c:145:19: error: ‘KMOD_DECOMP_LEN’ undeclared (first
>>> use in this function)
>>>   char decomp_name[KMOD_DECOMP_LEN];
>>>^
>>> tests/code-reading.c:145:19: note: each undeclared identifier is
>>> reported only once for each function it appears in
>>> tests/code-reading.c:208:2: warning: implicit declaration of function
>>> ‘dso__needs_decompress’ [-Wimplicit-function-declaration]
>>>   if (dso__needs_decompress(al.map->dso)) {
>>>   ^
>>> tests/code-reading.c:208:2: warning: nested extern declaration of
>>> ‘dso__needs_decompress’ [-Wnested-externs]
>>> tests/code-reading.c:209:3: warning: implicit declaration of function
>>> ‘dso__decompress_kmodule_path’ [-Wimplicit-function-declaration]
>>>if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
>>>^
>>> tests/code-reading.c:209:3: warning: nested extern declaration of
>>> ‘dso__decompress_kmodule_path’ [-Wnested-externs]
>>> tests/code-reading.c:145:7: warning: unused variable ‘decomp_name’
>>> [-Wunused-variable]
>>>   char decomp_name[KMOD_DECOMP_LEN];
>>>^
>>>
>>> Apparently, this was introduced by commit
>>> 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1:
>>>
>>> commit 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1
>>> Author: Namhyung Kim 
>>> Date:   Thu Jun 8 16:31:07 2017 +0900
>>>
>>> perf tests: Decompress kernel module before objdump
>>>
>>>
>>> Namhyung, are you fixing this?
>>
>> Ugh, I

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-30 Thread Murilo Opsfelder Araujo 
On 04/30/2018 02:49 PM, Greg Kroah-Hartman wrote:
> On Mon, Apr 30, 2018 at 10:20:08AM -0700, Greg Kroah-Hartman wrote:
>> On Mon, Apr 30, 2018 at 02:11:55PM -0300, Murilo Opsfelder Araujo wrote:
>>> On 04/11/2018 05:21 PM, Murilo Opsfelder Araújo wrote:
 On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
>> Using linux-3.18.y branch, perf build fails with the following:
>>
>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
>> prefix=/usr DESTDIR=/tmp/builddir/build all
>> [...]
>> util/session.c: In function ‘__perf_session__process_pipe_events’:
>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
>> function)
>>   ordered_events__set_copy_on_queue(oe, true);
>> ^
>> util/session.c:1093:36: note: each undeclared identifier is reported 
>> only once for each function it appears in
>>
>> This patch fixes it for linux-3.18.y branch.
>
> Why is this failing now?  Has it always been broken?  Is there an
> upstream patch that fixed this instead?
>

 Hi, Greg.

 We've caught this build issue this week. I'm not sure since when it's
 failing.

 The upstream patch that fixes this is:

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d

 commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
 Author: Arnaldo Carvalho de Melo 
 Date:   Tue Mar 3 11:48:12 2015 -0300

 perf ordered_events: Untangle from perf_session

 But it doesn't apply straightforwardly.  At
 fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
 struct are slightly different from linux-3.18.y.

 A list of upstream patches for a clean backport (I think) would be:

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d

 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d

 Do you prefer all above patches backported to linux-3.18.y or just the
 one-line fix I sent?

>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in 
>> pipe mode")
>
> Was this just a bad backport?

 Some patches were left behind, I guess.

>
> thanks,
>
> greg k-h
>>>
>>> Hi, Greg.
>>>
>>> I've realized that perf build on v3.18.107 is still broken, actually, it
>>> got a bit worse than v3.18.104.
>>>
>>> After applying my patch to fix the undeclared 'oe', perf build fails
>>> with the following errors:
>>>
>>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1
>>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1
>>> prefix=/usr DESTDIR=/tmp/builddir/build all
>>> [...]
>>> tests/code-reading.c: In function ‘read_object_code’:
>>> tests/code-reading.c:145:19: error: ‘KMOD_DECOMP_LEN’ undeclared (first
>>> use in this function)
>>>   char decomp_name[KMOD_DECOMP_LEN];
>>>^
>>> tests/code-reading.c:145:19: note: each undeclared identifier is
>>> reported only once for each function it appears in
>>> tests/code-reading.c:208:2: warning: implicit declaration of function
>>> ‘dso__needs_decompress’ [-Wimplicit-function-declaration]
>>>   if (dso__needs_decompress(al.map->dso)) {
>>>   ^
>>> tests/code-reading.c:208:2: warning: nested extern declaration of
>>> ‘dso__needs_decompress’ [-Wnested-externs]
>>> tests/code-reading.c:209:3: warning: implicit declaration of function
>>> ‘dso__decompress_kmodule_path’ [-Wimplicit-function-declaration]
>>>if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
>>>^
>>> tests/code-reading.c:209:3: warning: nested extern declaration of
>>> ‘dso__decompress_kmodule_path’ [-Wnested-externs]
>>> tests/code-reading.c:145:7: warning: unused variable ‘decomp_name’
>>> [-Wunused-variable]
>>>   char decomp_name[KMOD_DECOMP_LEN];
>>>^
>>>
>>> Apparently, this was introduced by commit
>>> 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1:
>>>
>>> commit 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1
>>> Author: Namhyung Kim 
>>> Date:   Thu Jun 8 16:31:07 2017 +0900
>>>
>>> perf tests: Decompress kernel module before objdump
>>>
>>>
>>> Namhyung, are you fixing this?
>>
>> Ugh, I can fix this, I just did so on 4.4.y...

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-30 Thread Greg Kroah-Hartman 
On Mon, Apr 30, 2018 at 10:20:08AM -0700, Greg Kroah-Hartman wrote:
> On Mon, Apr 30, 2018 at 02:11:55PM -0300, Murilo Opsfelder Araujo wrote:
> > On 04/11/2018 05:21 PM, Murilo Opsfelder Araújo wrote:
> > > On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
> > >> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
> > >>> Using linux-3.18.y branch, perf build fails with the following:
> > >>>
> > >>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
> > >>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
> > >>> prefix=/usr DESTDIR=/tmp/builddir/build all
> > >>> [...]
> > >>> util/session.c: In function ‘__perf_session__process_pipe_events’:
> > >>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
> > >>> function)
> > >>>   ordered_events__set_copy_on_queue(oe, true);
> > >>> ^
> > >>> util/session.c:1093:36: note: each undeclared identifier is 
> > >>> reported only once for each function it appears in
> > >>>
> > >>> This patch fixes it for linux-3.18.y branch.
> > >>
> > >> Why is this failing now?  Has it always been broken?  Is there an
> > >> upstream patch that fixed this instead?
> > >>
> > > 
> > > Hi, Greg.
> > > 
> > > We've caught this build issue this week. I'm not sure since when it's
> > > failing.
> > > 
> > > The upstream patch that fixes this is:
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > > 
> > > commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > > Author: Arnaldo Carvalho de Melo 
> > > Date:   Tue Mar 3 11:48:12 2015 -0300
> > > 
> > > perf ordered_events: Untangle from perf_session
> > > 
> > > But it doesn't apply straightforwardly.  At
> > > fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
> > > struct are slightly different from linux-3.18.y.
> > > 
> > > A list of upstream patches for a clean backport (I think) would be:
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > > 
> > > Do you prefer all above patches backported to linux-3.18.y or just the
> > > one-line fix I sent?
> > > 
> > >>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events 
> > >>> in pipe mode")
> > >>
> > >> Was this just a bad backport?
> > > 
> > > Some patches were left behind, I guess.
> > > 
> > >>
> > >> thanks,
> > >>
> > >> greg k-h
> > 
> > Hi, Greg.
> > 
> > I've realized that perf build on v3.18.107 is still broken, actually, it
> > got a bit worse than v3.18.104.
> > 
> > After applying my patch to fix the undeclared 'oe', perf build fails
> > with the following errors:
> > 
> > $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1
> > HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1
> > prefix=/usr DESTDIR=/tmp/builddir/build all
> > [...]
> > tests/code-reading.c: In function ‘read_object_code’:
> > tests/code-reading.c:145:19: error: ‘KMOD_DECOMP_LEN’ undeclared (first
> > use in this function)
> >   char decomp_name[KMOD_DECOMP_LEN];
> >^
> > tests/code-reading.c:145:19: note: each undeclared identifier is
> > reported only once for each function it appears in
> > tests/code-reading.c:208:2: warning: implicit declaration of function
> > ‘dso__needs_decompress’ [-Wimplicit-function-declaration]
> >   if (dso__needs_decompress(al.map->dso)) {
> >   ^
> > tests/code-reading.c:208:2: warning: nested extern declaration of
> > ‘dso__needs_decompress’ [-Wnested-externs]
> > tests/code-reading.c:209:3: warning: implicit declaration of function
> > ‘dso__decompress_kmodule_path’ [-Wimplicit-function-declaration]
> >if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
> >^
> > tests/code-reading.c:209:3: warning: nested extern declaration of
> > ‘dso__decompress_kmodule_path’ [-Wnested-externs]
> > tests/code-reading.c:145:7: warning: unused variable ‘decomp_name’
> > [-Wunused-variable]
> >   char decomp_name[KMOD_DECOMP_LEN];
> >^
> > 
> > Apparently, this was introduced by commit
> > 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1:
> > 
> > commit 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1
> > Author: Namhyung Kim 
> > Date:   Thu Jun 8 16:31:07 2017 +0900
> > 
> > perf tests: Decompress kernel module before objdump
> > 
> > 
> >

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-30 Thread Greg Kroah-Hartman 
On Mon, Apr 30, 2018 at 10:20:08AM -0700, Greg Kroah-Hartman wrote:
> On Mon, Apr 30, 2018 at 02:11:55PM -0300, Murilo Opsfelder Araujo wrote:
> > On 04/11/2018 05:21 PM, Murilo Opsfelder Araújo wrote:
> > > On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
> > >> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
> > >>> Using linux-3.18.y branch, perf build fails with the following:
> > >>>
> > >>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
> > >>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
> > >>> prefix=/usr DESTDIR=/tmp/builddir/build all
> > >>> [...]
> > >>> util/session.c: In function ‘__perf_session__process_pipe_events’:
> > >>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
> > >>> function)
> > >>>   ordered_events__set_copy_on_queue(oe, true);
> > >>> ^
> > >>> util/session.c:1093:36: note: each undeclared identifier is 
> > >>> reported only once for each function it appears in
> > >>>
> > >>> This patch fixes it for linux-3.18.y branch.
> > >>
> > >> Why is this failing now?  Has it always been broken?  Is there an
> > >> upstream patch that fixed this instead?
> > >>
> > > 
> > > Hi, Greg.
> > > 
> > > We've caught this build issue this week. I'm not sure since when it's
> > > failing.
> > > 
> > > The upstream patch that fixes this is:
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > > 
> > > commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > > Author: Arnaldo Carvalho de Melo 
> > > Date:   Tue Mar 3 11:48:12 2015 -0300
> > > 
> > > perf ordered_events: Untangle from perf_session
> > > 
> > > But it doesn't apply straightforwardly.  At
> > > fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
> > > struct are slightly different from linux-3.18.y.
> > > 
> > > A list of upstream patches for a clean backport (I think) would be:
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d
> > > 
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > > 
> > > Do you prefer all above patches backported to linux-3.18.y or just the
> > > one-line fix I sent?
> > > 
> > >>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events 
> > >>> in pipe mode")
> > >>
> > >> Was this just a bad backport?
> > > 
> > > Some patches were left behind, I guess.
> > > 
> > >>
> > >> thanks,
> > >>
> > >> greg k-h
> > 
> > Hi, Greg.
> > 
> > I've realized that perf build on v3.18.107 is still broken, actually, it
> > got a bit worse than v3.18.104.
> > 
> > After applying my patch to fix the undeclared 'oe', perf build fails
> > with the following errors:
> > 
> > $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1
> > HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1
> > prefix=/usr DESTDIR=/tmp/builddir/build all
> > [...]
> > tests/code-reading.c: In function ‘read_object_code’:
> > tests/code-reading.c:145:19: error: ‘KMOD_DECOMP_LEN’ undeclared (first
> > use in this function)
> >   char decomp_name[KMOD_DECOMP_LEN];
> >^
> > tests/code-reading.c:145:19: note: each undeclared identifier is
> > reported only once for each function it appears in
> > tests/code-reading.c:208:2: warning: implicit declaration of function
> > ‘dso__needs_decompress’ [-Wimplicit-function-declaration]
> >   if (dso__needs_decompress(al.map->dso)) {
> >   ^
> > tests/code-reading.c:208:2: warning: nested extern declaration of
> > ‘dso__needs_decompress’ [-Wnested-externs]
> > tests/code-reading.c:209:3: warning: implicit declaration of function
> > ‘dso__decompress_kmodule_path’ [-Wimplicit-function-declaration]
> >if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
> >^
> > tests/code-reading.c:209:3: warning: nested extern declaration of
> > ‘dso__decompress_kmodule_path’ [-Wnested-externs]
> > tests/code-reading.c:145:7: warning: unused variable ‘decomp_name’
> > [-Wunused-variable]
> >   char decomp_name[KMOD_DECOMP_LEN];
> >^
> > 
> > Apparently, this was introduced by commit
> > 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1:
> > 
> > commit 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1
> > Author: Namhyung Kim 
> > Date:   Thu Jun 8 16:31:07 2017 +0900
> > 
> > perf tests: Decompress kernel module before objdump
> > 
> > 
> > Namhyung, are you fixing this?
> 
> Ugh, I

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-30 Thread Greg Kroah-Hartman 
On Mon, Apr 30, 2018 at 02:11:55PM -0300, Murilo Opsfelder Araujo wrote:
> On 04/11/2018 05:21 PM, Murilo Opsfelder Araújo wrote:
> > On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
> >> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
> >>> Using linux-3.18.y branch, perf build fails with the following:
> >>>
> >>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
> >>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
> >>> prefix=/usr DESTDIR=/tmp/builddir/build all
> >>> [...]
> >>> util/session.c: In function ‘__perf_session__process_pipe_events’:
> >>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
> >>> function)
> >>>   ordered_events__set_copy_on_queue(oe, true);
> >>> ^
> >>> util/session.c:1093:36: note: each undeclared identifier is reported 
> >>> only once for each function it appears in
> >>>
> >>> This patch fixes it for linux-3.18.y branch.
> >>
> >> Why is this failing now?  Has it always been broken?  Is there an
> >> upstream patch that fixed this instead?
> >>
> > 
> > Hi, Greg.
> > 
> > We've caught this build issue this week. I'm not sure since when it's
> > failing.
> > 
> > The upstream patch that fixes this is:
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > 
> > commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > Author: Arnaldo Carvalho de Melo 
> > Date:   Tue Mar 3 11:48:12 2015 -0300
> > 
> > perf ordered_events: Untangle from perf_session
> > 
> > But it doesn't apply straightforwardly.  At
> > fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
> > struct are slightly different from linux-3.18.y.
> > 
> > A list of upstream patches for a clean backport (I think) would be:
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > 
> > Do you prefer all above patches backported to linux-3.18.y or just the
> > one-line fix I sent?
> > 
> >>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in 
> >>> pipe mode")
> >>
> >> Was this just a bad backport?
> > 
> > Some patches were left behind, I guess.
> > 
> >>
> >> thanks,
> >>
> >> greg k-h
> 
> Hi, Greg.
> 
> I've realized that perf build on v3.18.107 is still broken, actually, it
> got a bit worse than v3.18.104.
> 
> After applying my patch to fix the undeclared 'oe', perf build fails
> with the following errors:
> 
> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1
> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1
> prefix=/usr DESTDIR=/tmp/builddir/build all
> [...]
> tests/code-reading.c: In function ‘read_object_code’:
> tests/code-reading.c:145:19: error: ‘KMOD_DECOMP_LEN’ undeclared (first
> use in this function)
>   char decomp_name[KMOD_DECOMP_LEN];
>^
> tests/code-reading.c:145:19: note: each undeclared identifier is
> reported only once for each function it appears in
> tests/code-reading.c:208:2: warning: implicit declaration of function
> ‘dso__needs_decompress’ [-Wimplicit-function-declaration]
>   if (dso__needs_decompress(al.map->dso)) {
>   ^
> tests/code-reading.c:208:2: warning: nested extern declaration of
> ‘dso__needs_decompress’ [-Wnested-externs]
> tests/code-reading.c:209:3: warning: implicit declaration of function
> ‘dso__decompress_kmodule_path’ [-Wimplicit-function-declaration]
>if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
>^
> tests/code-reading.c:209:3: warning: nested extern declaration of
> ‘dso__decompress_kmodule_path’ [-Wnested-externs]
> tests/code-reading.c:145:7: warning: unused variable ‘decomp_name’
> [-Wunused-variable]
>   char decomp_name[KMOD_DECOMP_LEN];
>^
> 
> Apparently, this was introduced by commit
> 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1:
> 
> commit 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1
> Author: Namhyung Kim 
> Date:   Thu Jun 8 16:31:07 2017 +0900
> 
> perf tests: Decompress kernel module before objdump
> 
> 
> Namhyung, are you fixing this?

Ugh, I can fix this, I just did so on 4.4.y...

greg k-h

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-30 Thread Greg Kroah-Hartman 
On Mon, Apr 30, 2018 at 02:11:55PM -0300, Murilo Opsfelder Araujo wrote:
> On 04/11/2018 05:21 PM, Murilo Opsfelder Araújo wrote:
> > On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
> >> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
> >>> Using linux-3.18.y branch, perf build fails with the following:
> >>>
> >>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
> >>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
> >>> prefix=/usr DESTDIR=/tmp/builddir/build all
> >>> [...]
> >>> util/session.c: In function ‘__perf_session__process_pipe_events’:
> >>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
> >>> function)
> >>>   ordered_events__set_copy_on_queue(oe, true);
> >>> ^
> >>> util/session.c:1093:36: note: each undeclared identifier is reported 
> >>> only once for each function it appears in
> >>>
> >>> This patch fixes it for linux-3.18.y branch.
> >>
> >> Why is this failing now?  Has it always been broken?  Is there an
> >> upstream patch that fixed this instead?
> >>
> > 
> > Hi, Greg.
> > 
> > We've caught this build issue this week. I'm not sure since when it's
> > failing.
> > 
> > The upstream patch that fixes this is:
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > 
> > commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > Author: Arnaldo Carvalho de Melo 
> > Date:   Tue Mar 3 11:48:12 2015 -0300
> > 
> > perf ordered_events: Untangle from perf_session
> > 
> > But it doesn't apply straightforwardly.  At
> > fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
> > struct are slightly different from linux-3.18.y.
> > 
> > A list of upstream patches for a clean backport (I think) would be:
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> > 
> > Do you prefer all above patches backported to linux-3.18.y or just the
> > one-line fix I sent?
> > 
> >>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in 
> >>> pipe mode")
> >>
> >> Was this just a bad backport?
> > 
> > Some patches were left behind, I guess.
> > 
> >>
> >> thanks,
> >>
> >> greg k-h
> 
> Hi, Greg.
> 
> I've realized that perf build on v3.18.107 is still broken, actually, it
> got a bit worse than v3.18.104.
> 
> After applying my patch to fix the undeclared 'oe', perf build fails
> with the following errors:
> 
> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1
> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1
> prefix=/usr DESTDIR=/tmp/builddir/build all
> [...]
> tests/code-reading.c: In function ‘read_object_code’:
> tests/code-reading.c:145:19: error: ‘KMOD_DECOMP_LEN’ undeclared (first
> use in this function)
>   char decomp_name[KMOD_DECOMP_LEN];
>^
> tests/code-reading.c:145:19: note: each undeclared identifier is
> reported only once for each function it appears in
> tests/code-reading.c:208:2: warning: implicit declaration of function
> ‘dso__needs_decompress’ [-Wimplicit-function-declaration]
>   if (dso__needs_decompress(al.map->dso)) {
>   ^
> tests/code-reading.c:208:2: warning: nested extern declaration of
> ‘dso__needs_decompress’ [-Wnested-externs]
> tests/code-reading.c:209:3: warning: implicit declaration of function
> ‘dso__decompress_kmodule_path’ [-Wimplicit-function-declaration]
>if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
>^
> tests/code-reading.c:209:3: warning: nested extern declaration of
> ‘dso__decompress_kmodule_path’ [-Wnested-externs]
> tests/code-reading.c:145:7: warning: unused variable ‘decomp_name’
> [-Wunused-variable]
>   char decomp_name[KMOD_DECOMP_LEN];
>^
> 
> Apparently, this was introduced by commit
> 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1:
> 
> commit 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1
> Author: Namhyung Kim 
> Date:   Thu Jun 8 16:31:07 2017 +0900
> 
> perf tests: Decompress kernel module before objdump
> 
> 
> Namhyung, are you fixing this?

Ugh, I can fix this, I just did so on 4.4.y...

greg k-h

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-30 Thread Murilo Opsfelder Araujo 
On 04/11/2018 05:21 PM, Murilo Opsfelder Araújo wrote:
> On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
>> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
>>> Using linux-3.18.y branch, perf build fails with the following:
>>>
>>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
>>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
>>> prefix=/usr DESTDIR=/tmp/builddir/build all
>>> [...]
>>> util/session.c: In function ‘__perf_session__process_pipe_events’:
>>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
>>> function)
>>>   ordered_events__set_copy_on_queue(oe, true);
>>> ^
>>> util/session.c:1093:36: note: each undeclared identifier is reported 
>>> only once for each function it appears in
>>>
>>> This patch fixes it for linux-3.18.y branch.
>>
>> Why is this failing now?  Has it always been broken?  Is there an
>> upstream patch that fixed this instead?
>>
> 
> Hi, Greg.
> 
> We've caught this build issue this week. I'm not sure since when it's
> failing.
> 
> The upstream patch that fixes this is:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> 
> commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
> Author: Arnaldo Carvalho de Melo 
> Date:   Tue Mar 3 11:48:12 2015 -0300
> 
> perf ordered_events: Untangle from perf_session
> 
> But it doesn't apply straightforwardly.  At
> fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
> struct are slightly different from linux-3.18.y.
> 
> A list of upstream patches for a clean backport (I think) would be:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> 
> Do you prefer all above patches backported to linux-3.18.y or just the
> one-line fix I sent?
> 
>>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in 
>>> pipe mode")
>>
>> Was this just a bad backport?
> 
> Some patches were left behind, I guess.
> 
>>
>> thanks,
>>
>> greg k-h

Hi, Greg.

I've realized that perf build on v3.18.107 is still broken, actually, it
got a bit worse than v3.18.104.

After applying my patch to fix the undeclared 'oe', perf build fails
with the following errors:

$ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1
HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1
prefix=/usr DESTDIR=/tmp/builddir/build all
[...]
tests/code-reading.c: In function ‘read_object_code’:
tests/code-reading.c:145:19: error: ‘KMOD_DECOMP_LEN’ undeclared (first
use in this function)
  char decomp_name[KMOD_DECOMP_LEN];
   ^
tests/code-reading.c:145:19: note: each undeclared identifier is
reported only once for each function it appears in
tests/code-reading.c:208:2: warning: implicit declaration of function
‘dso__needs_decompress’ [-Wimplicit-function-declaration]
  if (dso__needs_decompress(al.map->dso)) {
  ^
tests/code-reading.c:208:2: warning: nested extern declaration of
‘dso__needs_decompress’ [-Wnested-externs]
tests/code-reading.c:209:3: warning: implicit declaration of function
‘dso__decompress_kmodule_path’ [-Wimplicit-function-declaration]
   if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
   ^
tests/code-reading.c:209:3: warning: nested extern declaration of
‘dso__decompress_kmodule_path’ [-Wnested-externs]
tests/code-reading.c:145:7: warning: unused variable ‘decomp_name’
[-Wunused-variable]
  char decomp_name[KMOD_DECOMP_LEN];
   ^

Apparently, this was introduced by commit
091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1:

commit 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1
Author: Namhyung Kim 
Date:   Thu Jun 8 16:31:07 2017 +0900

perf tests: Decompress kernel module before objdump


Namhyung, are you fixing this?

Cheers
Murilo

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-30 Thread Murilo Opsfelder Araujo 
On 04/11/2018 05:21 PM, Murilo Opsfelder Araújo wrote:
> On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
>> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
>>> Using linux-3.18.y branch, perf build fails with the following:
>>>
>>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
>>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
>>> prefix=/usr DESTDIR=/tmp/builddir/build all
>>> [...]
>>> util/session.c: In function ‘__perf_session__process_pipe_events’:
>>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
>>> function)
>>>   ordered_events__set_copy_on_queue(oe, true);
>>> ^
>>> util/session.c:1093:36: note: each undeclared identifier is reported 
>>> only once for each function it appears in
>>>
>>> This patch fixes it for linux-3.18.y branch.
>>
>> Why is this failing now?  Has it always been broken?  Is there an
>> upstream patch that fixed this instead?
>>
> 
> Hi, Greg.
> 
> We've caught this build issue this week. I'm not sure since when it's
> failing.
> 
> The upstream patch that fixes this is:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> 
> commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
> Author: Arnaldo Carvalho de Melo 
> Date:   Tue Mar 3 11:48:12 2015 -0300
> 
> perf ordered_events: Untangle from perf_session
> 
> But it doesn't apply straightforwardly.  At
> fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
> struct are slightly different from linux-3.18.y.
> 
> A list of upstream patches for a clean backport (I think) would be:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d
> 
> Do you prefer all above patches backported to linux-3.18.y or just the
> one-line fix I sent?
> 
>>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in 
>>> pipe mode")
>>
>> Was this just a bad backport?
> 
> Some patches were left behind, I guess.
> 
>>
>> thanks,
>>
>> greg k-h

Hi, Greg.

I've realized that perf build on v3.18.107 is still broken, actually, it
got a bit worse than v3.18.104.

After applying my patch to fix the undeclared 'oe', perf build fails
with the following errors:

$ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1
HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1
prefix=/usr DESTDIR=/tmp/builddir/build all
[...]
tests/code-reading.c: In function ‘read_object_code’:
tests/code-reading.c:145:19: error: ‘KMOD_DECOMP_LEN’ undeclared (first
use in this function)
  char decomp_name[KMOD_DECOMP_LEN];
   ^
tests/code-reading.c:145:19: note: each undeclared identifier is
reported only once for each function it appears in
tests/code-reading.c:208:2: warning: implicit declaration of function
‘dso__needs_decompress’ [-Wimplicit-function-declaration]
  if (dso__needs_decompress(al.map->dso)) {
  ^
tests/code-reading.c:208:2: warning: nested extern declaration of
‘dso__needs_decompress’ [-Wnested-externs]
tests/code-reading.c:209:3: warning: implicit declaration of function
‘dso__decompress_kmodule_path’ [-Wimplicit-function-declaration]
   if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
   ^
tests/code-reading.c:209:3: warning: nested extern declaration of
‘dso__decompress_kmodule_path’ [-Wnested-externs]
tests/code-reading.c:145:7: warning: unused variable ‘decomp_name’
[-Wunused-variable]
  char decomp_name[KMOD_DECOMP_LEN];
   ^

Apparently, this was introduced by commit
091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1:

commit 091b3b4ba55daf8b28f40794aefdaa0bdb5af7a1
Author: Namhyung Kim 
Date:   Thu Jun 8 16:31:07 2017 +0900

perf tests: Decompress kernel module before objdump


Namhyung, are you fixing this?

Cheers
Murilo

[PATCH] perf session: Fix undeclared 'oe'

2018-04-11 Thread Murilo Opsfelder Araujo 
Using linux-3.18.y branch, perf build fails with the following:

$ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
prefix=/usr DESTDIR=/tmp/builddir/build all
[...]
util/session.c: In function ‘__perf_session__process_pipe_events’:
util/session.c:1093:36: error: ‘oe’ undeclared (first use in this function)
  ordered_events__set_copy_on_queue(oe, true);
^
util/session.c:1093:36: note: each undeclared identifier is reported only 
once for each function it appears in

This patch fixes it for linux-3.18.y branch.

Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in pipe 
mode")
Cc:  # 3.18.x
Cc: Alexander Shishkin 
Cc: Andi Kleen 
Cc: Arnaldo Carvalho de Melo 
Cc: David Carrillo-Cisneros 
Cc: Greg Kroah-Hartman 
Cc: He Kuang 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Masami Hiramatsu 
Cc: Paul Mackerras 
Cc: Paul Turner 
Cc: Peter Zijlstra 
Cc: Sasha Levin 
Cc: Simon Que 
Cc: Stephane Eranian 
Cc: Wang Nan 
Signed-off-by: Murilo Opsfelder Araujo 
---
 tools/perf/util/session.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index dc3d3b1b813e..c2d4a7ec40df 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1073,6 +1073,7 @@ volatile int session_done;
 static int __perf_session__process_pipe_events(struct perf_session *session,
   struct perf_tool *tool)
 {
+   struct ordered_events *oe = >ordered_events;
int fd = perf_data_file__fd(session->file);
union perf_event *event;
uint32_t size, cur_size = 0;
-- 
2.14.3

[PATCH] perf session: Fix undeclared 'oe'

2018-04-11 Thread Murilo Opsfelder Araujo 
Using linux-3.18.y branch, perf build fails with the following:

$ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
prefix=/usr DESTDIR=/tmp/builddir/build all
[...]
util/session.c: In function ‘__perf_session__process_pipe_events’:
util/session.c:1093:36: error: ‘oe’ undeclared (first use in this function)
  ordered_events__set_copy_on_queue(oe, true);
^
util/session.c:1093:36: note: each undeclared identifier is reported only 
once for each function it appears in

This patch fixes it for linux-3.18.y branch.

Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in pipe 
mode")
Cc:  # 3.18.x
Cc: Alexander Shishkin 
Cc: Andi Kleen 
Cc: Arnaldo Carvalho de Melo 
Cc: David Carrillo-Cisneros 
Cc: Greg Kroah-Hartman 
Cc: He Kuang 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Masami Hiramatsu 
Cc: Paul Mackerras 
Cc: Paul Turner 
Cc: Peter Zijlstra 
Cc: Sasha Levin 
Cc: Simon Que 
Cc: Stephane Eranian 
Cc: Wang Nan 
Signed-off-by: Murilo Opsfelder Araujo 
---
 tools/perf/util/session.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index dc3d3b1b813e..c2d4a7ec40df 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1073,6 +1073,7 @@ volatile int session_done;
 static int __perf_session__process_pipe_events(struct perf_session *session,
   struct perf_tool *tool)
 {
+   struct ordered_events *oe = >ordered_events;
int fd = perf_data_file__fd(session->file);
union perf_event *event;
uint32_t size, cur_size = 0;
-- 
2.14.3

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-11 Thread Murilo Opsfelder Araújo 
On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
>> Using linux-3.18.y branch, perf build fails with the following:
>>
>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
>> prefix=/usr DESTDIR=/tmp/builddir/build all
>> [...]
>> util/session.c: In function ‘__perf_session__process_pipe_events’:
>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
>> function)
>>   ordered_events__set_copy_on_queue(oe, true);
>> ^
>> util/session.c:1093:36: note: each undeclared identifier is reported 
>> only once for each function it appears in
>>
>> This patch fixes it for linux-3.18.y branch.
> 
> Why is this failing now?  Has it always been broken?  Is there an
> upstream patch that fixed this instead?
> 

Hi, Greg.

We've caught this build issue this week. I'm not sure since when it's
failing.

The upstream patch that fixes this is:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d

commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
Author: Arnaldo Carvalho de Melo 
Date:   Tue Mar 3 11:48:12 2015 -0300

perf ordered_events: Untangle from perf_session

But it doesn't apply straightforwardly.  At
fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
struct are slightly different from linux-3.18.y.

A list of upstream patches for a clean backport (I think) would be:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d

Do you prefer all above patches backported to linux-3.18.y or just the
one-line fix I sent?

>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in 
>> pipe mode")
> 
> Was this just a bad backport?

Some patches were left behind, I guess.

> 
> thanks,
> 
> greg k-h
> 

Cheers
Murilo

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-11 Thread Murilo Opsfelder Araújo 
On 04/11/2018 04:33 PM, Greg Kroah-Hartman wrote:
> On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
>> Using linux-3.18.y branch, perf build fails with the following:
>>
>> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
>> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
>> prefix=/usr DESTDIR=/tmp/builddir/build all
>> [...]
>> util/session.c: In function ‘__perf_session__process_pipe_events’:
>> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
>> function)
>>   ordered_events__set_copy_on_queue(oe, true);
>> ^
>> util/session.c:1093:36: note: each undeclared identifier is reported 
>> only once for each function it appears in
>>
>> This patch fixes it for linux-3.18.y branch.
> 
> Why is this failing now?  Has it always been broken?  Is there an
> upstream patch that fixed this instead?
> 

Hi, Greg.

We've caught this build issue this week. I'm not sure since when it's
failing.

The upstream patch that fixes this is:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d

commit fa713a4eb9cebe5dec71b1bd11429603e17d841d
Author: Arnaldo Carvalho de Melo 
Date:   Tue Mar 3 11:48:12 2015 -0300

perf ordered_events: Untangle from perf_session

But it doesn't apply straightforwardly.  At
fa713a4eb9cebe5dec71b1bd11429603e17d841d, perf API and perf_evlist
struct are slightly different from linux-3.18.y.

A list of upstream patches for a clean backport (I think) would be:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54245fdc357613633954bfd38cffb71cb9def067

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75be989a7a18e9666efd92b846ee48bed79e8086

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=313e53b08e99b1dacf9ea2b0fbe97890db1ea95f

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9fa8727aa4d98d35ca50ef9cd8a50c6468af921d

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa713a4eb9cebe5dec71b1bd11429603e17d841d

Do you prefer all above patches backported to linux-3.18.y or just the
one-line fix I sent?

>> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in 
>> pipe mode")
> 
> Was this just a bad backport?

Some patches were left behind, I guess.

> 
> thanks,
> 
> greg k-h
> 

Cheers
Murilo

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-11 Thread Greg Kroah-Hartman 
On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
> Using linux-3.18.y branch, perf build fails with the following:
> 
> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
> prefix=/usr DESTDIR=/tmp/builddir/build all
> [...]
> util/session.c: In function ‘__perf_session__process_pipe_events’:
> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
> function)
>   ordered_events__set_copy_on_queue(oe, true);
> ^
> util/session.c:1093:36: note: each undeclared identifier is reported only 
> once for each function it appears in
> 
> This patch fixes it for linux-3.18.y branch.

Why is this failing now?  Has it always been broken?  Is there an
upstream patch that fixed this instead?

> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in pipe 
> mode")

Was this just a bad backport?

thanks,

greg k-h

Re: [PATCH] perf session: Fix undeclared 'oe'

2018-04-11 Thread Greg Kroah-Hartman 
On Wed, Apr 11, 2018 at 03:41:35PM -0300, Murilo Opsfelder Araujo wrote:
> Using linux-3.18.y branch, perf build fails with the following:
> 
> $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 
> HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 
> prefix=/usr DESTDIR=/tmp/builddir/build all
> [...]
> util/session.c: In function ‘__perf_session__process_pipe_events’:
> util/session.c:1093:36: error: ‘oe’ undeclared (first use in this 
> function)
>   ordered_events__set_copy_on_queue(oe, true);
> ^
> util/session.c:1093:36: note: each undeclared identifier is reported only 
> once for each function it appears in
> 
> This patch fixes it for linux-3.18.y branch.

Why is this failing now?  Has it always been broken?  Is there an
upstream patch that fixed this instead?

> Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in pipe 
> mode")

Was this just a bad backport?

thanks,

greg k-h