RE: NGPT with 2.4.20

Philipp,

See my comments mixed in below with [DPH].

 

Thanks,

Dave Howell

 

These are my opinions and not official opinions of Intel Corp.

 

David Howell

Intel Corporation

Telco Server Development

Server Products Division

Voice: (803) 461-6112  Fax: (803) 461-6292

 

Intel Corporation

Columbia Design Center, CBA-2

250 Berryhill Road, Suite 100

Columbia, SC 29210

 

[email protected]

 

-----Original Message-----
From: Philipp [mailto:[email protected]] 
Sent: Wednesday, January 22, 2003 9:33 AM
To: [email protected]
Subject: [pthreads-users] NGPT with 2.4.20

 

Good Afternoon,

 

 

today i searched the Mailinglist Archive for Information

about NGPT with linux 2.4.20 because i couldnt find

the appropriate path.

i found some mails regarding this issue and found some

advice to use 2.4.19 patch, too; but i didnt found any

mails reporting success with this solution.

 

is it safe to use this patch or will i have to make changes ?

i dont think i am skilled enough to do changes to the kernel

code by myself...

[DPH] The 2.4.19 patch installs with minor failures, as I recall. If someone
who does

          this successfully can contribute a patch for 2.4.20 we should post
it. 

 

          BTW, the Red Hat 8.1 Beta ("Phoebe") has all of the thread group
and futex 

          changes in the distribution kernels and kernel-source rpm. It uses
the Red Hat 

          kernel source for 2.4.20-2.2 plus their patches. Bad news is that
I am having 

          problems getting ngpt-2.2.0 to build, creating the test APPs with
the ngpt lib 

          I'm seeing 'undefined reference to errno', needs investigation. 

 

another question: when i install ngpt it will overwrite my old

threating library, right (using debian woody at the moment)  ?

 

what will happen when i reboot the system with unpatched

kernel (lets say something went wrong with the new kernel

and i have to boot an old one) ? will that totally fail or will

i be able to at least restore the files ngpt replaced ?

[DPH] Out of the box NGPT overlays a minimum of Linuxthreads files, and can

          coexist with Linuxthreads for runtime; my experience is using RH
7.3/8.0.

          The Linuxthreads runtime is kept under /lib and /lib/i686, ngpt
installs under

          /usr/lib, no collisions. Compile/link files are overlayed, but if
you are building

          using the source tarball there is install/uninstall support to
save and put the 

          Linuxthreads files back in place.

 

          So, booting an old kernel is not an issue unless you try to run
NGPT linked

          APPs which will fail, but the standard utilities on the system
will continue 

          to work with the Linuxthreads runtime. 

 

Thank you very much,

Philipp