[dts] [PATCH 2/9] framework: platform independent cpu info parsing
Liu, Yong
yong.liu at intel.com
Tue Mar 1 13:42:21 CET 2016
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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