Re: [dts] [PATCH 2/9] framework: platform independent cpu info parsing

["Liu, Yong" <yong.liu@intel.com>]

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@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@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@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
> >
>