From: Peter Chubb <peter@chubb.wattle.id.au>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] ia64_mca_rendez_int_handler use of hard_smp_processor_id
Date: Wed, 26 Mar 2003 01:55:55 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590723705312@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590723705289@msgid-missing>
Index: 20.5/arch/ia64/kernel/mca.c
--- 20.5/arch/ia64/kernel/mca.c Wed, 11 Dec 2002 20:58:53 +1100 kaos (linux-2.4/s/c/5_mca.c 1.1.3.2.3.1.1.1.1.3 644)
+++ 20.5(w)/arch/ia64/kernel/mca.c Wed, 26 Mar 2003 08:14:29 +1100 kaos (linux-2.4/s/c/5_mca.c 1.1.3.2.3.1.1.1.1.3 644)
@@ -640,13 +640,10 @@ ia64_mca_wakeup_all(void)
void
ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *ptregs)
{
- int flags, cpu = 0;
+ int flags, cpu = smp_processor_id();
/* Mask all interrupts */
save_and_cli(flags);
If this is called from a preemptible context, then move the cpu cmp_processor_id() within the save_and_cli() section, or it won't be
preempt safe. (thread could be migrated between getting the processor
ID and stopping interrupts.)
Peter C
next prev parent reply other threads:[~2003-03-26 1:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-22 4:12 [Linux-ia64] ia64_mca_rendez_int_handler use of hard_smp_processor_id Keith Owens
2003-03-24 21:54 ` David Mosberger
2003-03-25 16:45 ` Luck, Tony
2003-03-25 21:15 ` Keith Owens
2003-03-26 1:55 ` Peter Chubb [this message]
2003-04-16 16:36 ` Bjorn Helgaas
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