Re: [PATCH] protect migration/%d etc from sched_setaffinity

From: Andrew Morton (akpm@osdl.org)
Date: Thu Jul 31 2003 - 18:17:03 EST

Joe Korty <joe.korty@ccur.com> wrote:
>
> I'd like to be able to write shell scrips that operate on the set of
> /proc/[0-9]* without having to know which of the ever-changing list
> of processes need to be avoided and which not.

Like this?

#!/bin/sh

#
# can_set_affinity pid
#
can_set_affinity()
{
        if [ "$(cat /proc/$1/maps)" != "" ]
        then
                return 0
        fi
        if head -1 /proc/$1/status | egrep "events|migration"
        then
                return 1
        else
                return 0
        fi
}

if can_set_affinity $1
then
        echo can set affinity of pid $1
else
        echo cannot set affinity of pid $1
fi

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