From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4FD864B5.3020007@grandegger.com> Date: Wed, 13 Jun 2012 12:00:21 +0200 From: Wolfgang Grandegger MIME-Version: 1.0 References: <4FC637EB.90908@xenomai.org> <4FCDB0FD.1080309@xenomai.org> <8236197CA3DA864F9EF20609D9887263B7F87D1A@rrxchngmbx01.mro.roland-man.biz> <4FCDC08E.9030101@xenomai.org> <8236197CA3DA864F9EF20609D9887263B7F88212@rrxchngmbx01.mro.roland-man.biz> In-Reply-To: <8236197CA3DA864F9EF20609D9887263B7F88212@rrxchngmbx01.mro.roland-man.biz> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Re: [Xenomai] ftrace List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dietmar.schindler@manroland.com Cc: Xenomai@xenomai.org On 06/13/2012 11:32 AM, dietmar.schindler@manroland.com wrote: >> From: Philippe Gerum [mailto:rpm@xenomai.org] >> Sent: Tuesday, June 05, 2012 10:17 AM >> >> On 06/05/2012 10:06 AM, dietmar.schindler@manroland.com wrote: >>> A Xenomai-patched 2.6.34 kernel (ppc GNU/Linux) crashes when issuing = the >> command >>> >>> echo function>/sys/kernel/debug/tracing/current_tracer >>> >>> (sometimes displaying NIP in a function from >> "source/kernel/trace/ring_buffer.c", sometimes with no message). >>> >>> Are Xenomai and ftrace incompatible? >>> >> >> No, but some ftrace bits have to be made pipeline-aware. The generic >> ones should be, but some powerpc-specific fix ups might be missing. I'= m >> not using/testing ftrace routinely when upgrading patches. Also, 2.6.3= 4 >> is fairly old. >=20 > http://www.xenomai.org/index.php/I-pipe:Tracer#Configuration says: "Ftr= ace's function and graph tracers themselves are still not usable over I-p= ipe kernels, latest I-pipe will prevent conflicting use." >=20 > I'm confused - I can't gather from this whether the Function Tracer mig= ht work or can't possibly work. >=20 > -- > Best Regards, > Dietmar > ________________________________________ > manroland web systems GmbH -- Managing Director: Uwe L=FCders > Registered Office: Augsburg -- Trade Register: AG Augsburg -- HRB-No. 2= 6816 -- VAT: DE281389840 >=20 > Confidentiality note: > This eMail and any files transmitted with it are confidential and inten= ded solely for the use of the individual or entity to whom they are addre= ssed. If you are not the intended recipient, you are hereby notified that= any use or dissemination of this communication is strictly prohibited. I= f you have received this eMail in error, please notify us immediately via= info@manroland-web.com, then delete this eMail. >=20 > - Please consider your environmental responsibility before printing thi= s eMail > ________________________________________ You should try to get rid of this useless message when you send messages to a public mailing list. Wolfgang