From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Carstens Subject: Re: [PATCH v2] arch: s390: kernel: scan all present cpu forcely. Date: Thu, 27 Jun 2013 10:18:45 +0200 Message-ID: <20130627081845.GA3824@osiris> References: <51C8F685.6000209@asianux.com> <20130625064832.GA4999@osiris> <51C94599.1020707@asianux.com> <20130625090928.GA8981@osiris> <51CBA6B6.1010809@asianux.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <51CBA6B6.1010809@asianux.com> Sender: linux-arch-owner@vger.kernel.org List-Archive: List-Post: To: Chen Gang Cc: Martin Schwidefsky , linux390@de.ibm.com, cornelia.huck@de.ibm.com, mtosatti@redhat.com, Thomas Gleixner , linux-s390@vger.kernel.org, "linux-kernel@vger.kernel.org" , Linux-Arch List-ID: On Thu, Jun 27, 2013 at 10:43:02AM +0800, Chen Gang wrote: > The architectures which may support 'hotpluggable', can scan all cpus > during subsys_initcall(). the upper caller will skip the return value. > > It also can initialize hotpluggable flag of all cpus in time, no matter > whether any cpus fail or not. > > Signed-off-by: Chen Gang > --- > arch/s390/kernel/smp.c | 5 +++-- > 1 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c > index d386c4e..75a118f 100644 > --- a/arch/s390/kernel/smp.c > +++ b/arch/s390/kernel/smp.c > @@ -1064,8 +1064,9 @@ static int __init s390_smp_init(void) > #endif > for_each_present_cpu(cpu) { > rc = smp_add_present_cpu(cpu); > - if (rc) > - return rc; > + if (unlikely(rc)) > + printk(KERN_WARNING "%s: add cpu %d failed (%d)\n", > + __func__, cpu, rc); I have no idea how the patch description is supposed to correlate with your patch. However your patch doesn't make sense anyway. We have initcall_debug for .. initcall debugging, which your patch would break in addition, since this function would now return 0 instead of the return code.