From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Srivatsa S. Bhat" Subject: [RESEND PATCH 1/2] parisc/CPU hotplug: Add missing call to notify_cpu_starting() Date: Wed, 16 May 2012 00:32:17 +0530 Message-ID: <20120515190157.22459.91924.stgit@srivatsabhat> References: <20120515190115.22459.93544.stgit@srivatsabhat> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Cc: akpm@linux-foundation.org, mingo@kernel.org, a.p.zijlstra@chello.nl, mpatocka@redhat.com, stepanm@codeaurora.org, tglx@linutronix.de, James.Bottomley@hansenpartnership.com, deller@gmx.de, dhowells@redhat.com, yasutake.koichi@jp.panasonic.com, eike-kernel@sf-tec.de, linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org, srivatsa.bhat@linux.vnet.ibm.com, linux-am33-list@redhat.com To: torvalds@linux-foundation.org Return-path: In-Reply-To: <20120515190115.22459.93544.stgit@srivatsabhat> List-ID: List-Id: linux-parisc.vger.kernel.org The scheduler depends on receiving the CPU_STARTING notification, without which we end up into a lot of trouble. So add the missing call to notify_cpu_starting() in the bringup code. Signed-off-by: Srivatsa S. Bhat Acked-and-Tested-by: Mikulas Patocka Acked-and-Tested-by: Tobias Ulmer Tested-by: John David Anglin --- arch/parisc/kernel/smp.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c index 0bb1d63..4dc7b79 100644 --- a/arch/parisc/kernel/smp.c +++ b/arch/parisc/kernel/smp.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -295,8 +296,13 @@ smp_cpu_init(int cpunum) printk(KERN_CRIT "CPU#%d already initialized!\n", cpunum); machine_halt(); - } + } + + notify_cpu_starting(cpunum); + + ipi_call_lock(); set_cpu_online(cpunum, true); + ipi_call_unlock(); /* Initialise the idle task for this CPU */ atomic_inc(&init_mm.mm_count);