From: Chen Gang <gang.chen@asianux.com>
To: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>,
linux390@de.ibm.com, cornelia.huck@de.ibm.com,
mtosatti@redhat.com, Thomas Gleixner <tglx@linutronix.de>,
linux-s390@vger.kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linux-Arch <linux-arch@vger.kernel.org>
Subject: [PATCH v2] arch: s390: kernel: scan all present cpu forcely.
Date: Thu, 27 Jun 2013 10:43:02 +0800 [thread overview]
Message-ID: <51CBA6B6.1010809@asianux.com> (raw)
In-Reply-To: <20130625090928.GA8981@osiris>
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 <gang.chen@asianux.com>
---
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);
}
return 0;
}
--
1.7.7.6
next prev parent reply other threads:[~2013-06-27 2:43 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20130625014645.qczOugAFBrMJO-5iGZyzyXFtqrHbXhehGoqqp8JU2eQ@z>
2013-06-25 1:46 ` [PATCH] arch: s390: kernel: reset 'c->hotpluggable' when failure occurs Chen Gang
[not found] ` <20130625015441.yimPsU9P_MbLl68LALkInHU6BHTrHMbIdSo3M3RUxiM@z>
2013-06-25 1:54 ` [Suggestion] arch: s390: mm: the warnings with allmodconfig and "EXTRA_CFLAGS=-W" Chen Gang
[not found] ` <20130625065006.9nVf-cqdfTs0BrmaOdm4f8CQDGItep_9cSWKJDxCLyk@z>
2013-06-25 6:50 ` Martin Schwidefsky
2013-06-25 7:25 ` Chen Gang
2013-06-25 6:48 ` [PATCH] arch: s390: kernel: reset 'c->hotpluggable' when failure occurs Heiko Carstens
2013-06-25 7:24 ` Chen Gang
2013-06-25 9:09 ` Heiko Carstens
2013-06-25 9:31 ` Chen Gang
2013-06-26 1:44 ` Chen Gang
2013-06-27 2:43 ` Chen Gang [this message]
2013-06-27 8:18 ` [PATCH v2] arch: s390: kernel: scan all present cpu forcely Heiko Carstens
2013-06-27 9:22 ` Chen Gang
2013-06-28 1:23 ` [PATCH] include/linux/interrupt.h: add dummy irq_set_irq_wake() for "!GENERIC_HARDIRQS" Chen Gang
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