Jan Kiszka wrote: > Gilles Chanteperdrix wrote: >> Gilles Chanteperdrix wrote: >>> Jan Kiszka wrote: >>>> Hi, >>>> >>>> currently I have the following six patches in my assorted queue >>>> (git://git.kiszka.org/xenomai.git queue/assorted). All have been posted >>>> before, I just rebased them since then a few times. Should I repost >>>> any/all of them (would be no problem), or are some already queued for >>>> potential merge? >>>> >>>> Jan >>>> >>>> (...) >>>> commit a631ab2c531d5e381ba8a0a59bf301a0276d9f99 >>>> Author: Jan Kiszka <jan.kis...@siemens.com> >>>> Date: Thu Jan 15 11:10:24 2009 +0100 >>>> >>>> POSIX: Do not auto-shadow main with dlopen enabled >>>> >>>> Don't perform auto-shadowing in POSIX skin if we might be loaded via >>>> dlopen. Otherwise the wrong thread, the undefined dlopen caller, may be >>>> (re-)shadowed, assigning wrong scheduling settings. >>>> >>>> Signed-off-by: Jan Kiszka <jan.kis...@siemens.com> >>>> >>>> src/skins/posix/init.c | 43 ++++++++++++++++++++++++++++--------------- >>>> 1 files changed, 28 insertions(+), 15 deletions(-) >>>> >>>> commit 91ae3da822ca558804bf33be4d164ea4c2667c1b >>>> Author: Jan Kiszka <jan.kis...@siemens.com> >>>> Date: Thu Jan 15 11:10:24 2009 +0100 >>>> >>>> Replace --without-__tread with --enable-dlopen-skins >>>> >>>> In practice, you only want to disable __thread support when Xenomai >>>> skin >>>> libraries should be loadable via dlopen. Therefore rename the related >>>> configure switch accordingly. >>>> >>>> Signed-off-by: Jan Kiszka <jan.kis...@siemens.com> >>>> >>> Nack these two ones: one of the gcc bugs I have found on ARM is related >>> to __thread (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38815). So, >>> even though I have found a work around for the bug, I am not sure that >>> it works all the time, so disabling __thread on ARM is safer. Especially >>> since __thread does not bring any performance improvement over >>> pthread_(get|set)specific on ARM. >> Actually, I am not opposed to the first, only to the second. > > OK, will you or should I apply the do-not-auto-shadow patch? > > Regarding the second one: If the option should continue to be named > --without-__thread (because of ARM), then we need at the bare minimum a > documentation of the correlation with dlopen. BTW, any concerns to apply > the "Mark libs nodlopen" fix?
Maybe we could add the dlopen option which would disable shadowing of the main thread and unselect __thread ? -- Gilles. _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core