[dts] [PATCH 2/9] framework: platform independent cpu info parsing
Xu, HuilongX
huilongx.xu at intel.com
Wed Mar 9 06:50:56 CET 2016
Hi yong,
Yocto is a embedded os, so it not include rpm package tools.
I can't install lscpu in it, except rebuild yocto image.
Thanks a lot
> -----Original Message-----
> From: Liu, Yong
> Sent: Tuesday, March 01, 2016 8:42 PM
> To: gowrishankar; Xu, HuilongX
> Cc: dts
> Subject: RE: [dts] [PATCH 2/9] framework: platform independent cpu info
> parsing
>
> Huilong,
> "lscpu" is one of linux system utilities, it packed in util-linux rpm file
> in fedora distribution.
> Could you whether there is available installation package in yocto?
>
> > -----Original Message-----
> > From: dts [mailto:dts-bounces at dpdk.org] On Behalf Of gowrishankar
> > Sent: Tuesday, March 01, 2016 11:14 AM
> > To: Xu, HuilongX
> > Cc: dts
> > Subject: Re: [dts] [PATCH 2/9] framework: platform independent cpu info
> > parsing
> >
> > Hi,
> > Thanks for this check. For yocto or any other platform which do not have
> > lscpu by default, we can add a function to convert cpu info into a
> > parsable
> > format as given by lscpu. Any thoughts ?.
> >
> > Thanks,
> > Gowrishankar
> >
> > On Monday 29 February 2016 07:43 AM, Xu, HuilongX wrote:
> > > Hi Gowrishankar,
> > > Lscpu cmdline not default in yocto os.
> > > Thanks a lot
> > >> -----Original Message-----
> > >> From: dts [mailto:dts-bounces at dpdk.org] On Behalf Of Gowrishankar
> > >> Sent: Friday, February 26, 2016 6:17 PM
> > >> To: dts
> > >> Subject: [dts] [PATCH 2/9] framework: platform independent cpu info
> > >> parsing
> > >>
> > >> To collect thread/core/socket, /proc/cpuinfo would not help in case
> of
> > >> powerpc.
> > >> Instead, lscpu seems to be a better alternative and platform neutral
> > >> approach.
> > >>
> > >> Signed-off-by: Gowrishankar <gowrishankar.m at linux.vnet.ibm.com>
> > >> ---
> > >> framework/crb.py | 40 ++++++++++++----------------------------
> > >> 1 file changed, 12 insertions(+), 28 deletions(-)
> > >>
> > >> diff --git a/framework/crb.py b/framework/crb.py
> > >> index c6fd9fb..1711f37 100644
> > >> --- a/framework/crb.py
> > >> +++ b/framework/crb.py
> > >> @@ -495,41 +495,25 @@ class Crb(object):
> > >>
> > >> cpuinfo = \
> > >> self.send_expect(
> > >> - "grep --color=never \"processor\\|physical id\\|core
> > >> id\\|^$\" /proc/cpuinfo",
> > >> + "lscpu -p|grep -v \#",
> > >> "#", alt_session=True)
> > >>
> > >> - if "processor" not in cpuinfo:
> > >> - # yocto not support --color=never, but ubuntu must need
> -
> > -
> > >> color=never,
> > >> - # so check cpuinfo, before parsing cpuinfo, if cpuifo
> get
> > >> error, delete --color=never
> > >> - # and get cpuinfo again
> > >> - cpuinfo = \
> > >> - self.send_expect(
> > >> - r'grep "processor\|physical id\|core id\|^$"
> > >> /proc/cpuinfo',
> > >> - "#", alt_session=True)
> > >> -
> > >> - cpuinfo = cpuinfo.split('\r\n\r\n')
> > >> + cpuinfo = cpuinfo.split()
> > >> # haswell cpu on cottonwood core id not correct
> > >> # need addtional coremap for haswell cpu
> > >> core_id = 0
> > >> coremap = {}
> > >> for line in cpuinfo:
> > >> - m = re.search("processor\t: (\d+)\r\n" +
> > >> - "physical id\t: (\d+)\r\n" +
> > >> - "core id\t\t: (\d+)", line)
> > >> -
> > >> - if m:
> > >> - thread = m.group(1)
> > >> - socket = m.group(2)
> > >> - core = m.group(3)
> > >> -
> > >> - if core not in coremap.keys():
> > >> - coremap[core] = core_id
> > >> - core_id += 1
> > >> -
> > >> - if self.crb['bypass core0'] and core == '0' and
> > socket ==
> > >> '0':
> > >> - self.logger.info("Core0 bypassed")
> > >> - continue
> > >> - self.cores.append(
> > >> + (thread, core, socket) = line.split(',')[0:3]
> > >> +
> > >> + if core not in coremap.keys():
> > >> + coremap[core] = core_id
> > >> + core_id += 1
> > >> +
> > >> + if self.crb['bypass core0'] and core == '0' and socket
> ==
> > '0':
> > >> + self.logger.info("Core0 bypassed")
> > >> + continue
> > >> + self.cores.append(
> > >> {'thread': thread, 'socket': socket, 'core':
> > >> coremap[core]})
> > >>
> > >> self.number_of_cores = len(self.cores)
> > >> --
> > >> 1.7.10.4
> > >
> >
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