Attachment 290406 Details for Bug 426793 – Upstream patch ported to recent RHEL-5 kernel

[patch] Upstream patch ported to recent RHEL-5 kernel

linux-2.6-ia64-adjust-cmci-mask-on-cpu-hotplug.patch (text/plain), 1.84 KB, created by Fabio Olive Leite on 2007-12-26 13:17:44 UTC

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Creator: Fabio Olive Leite

Created: 2007-12-26 13:17:44 UTC

Size: 1.84 KB

patch

obsolete

>commit ed5d4026ae6f51bec25e03a891a7d59c492577ab
>Author: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
>Date:   Wed Dec 19 11:42:02 2007 -0800
>
>    [IA64] Adjust CMCI mask on CPU hotplug
>    
>    Currently CMCI mask of hot-added CPU is always disabled after CPU hotplug.
>    We should adjust this mask depending on CMC polling state.
>    
>    Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
>    Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
>    Signed-off-by: Tony Luck <tony.luck@intel.com>
>
>diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
>index 10b48cd..6dbf591 100644
>--- a/arch/ia64/kernel/mca.c
>+++ b/arch/ia64/kernel/mca.c
>@@ -72,6 +72,7 @@
> #include <linux/smp.h>
> #include <linux/workqueue.h>
> #include <linux/cpumask.h>
>+#include <linux/cpu.h>
> 
> #include <asm/delay.h>
> #include <asm/kdebug.h>
>@@ -1771,6 +1772,36 @@ ia64_mca_cpu_init(void *cpu_data)
> 							      PAGE_KERNEL));
> }
> 
>+static void __cpuinit ia64_mca_cmc_vector_adjust(void *dummy)
>+{
>+	unsigned long flags;
>+
>+	local_irq_save(flags);
>+	if (!cmc_polling_enabled)
>+		ia64_mca_cmc_vector_enable(NULL);
>+	local_irq_restore(flags);
>+}
>+
>+static int __cpuinit mca_cpu_callback(struct notifier_block *nfb,
>+				      unsigned long action,
>+				      void *hcpu)
>+{
>+	int hotcpu = (unsigned long) hcpu;
>+
>+	switch (action) {
>+	case CPU_ONLINE:
>+	case CPU_ONLINE_FROZEN:
>+		smp_call_function_single(hotcpu, ia64_mca_cmc_vector_adjust,
>+					 NULL, 1, 0);
>+		break;
>+	}
>+	return NOTIFY_OK;
>+}
>+
>+static struct notifier_block mca_cpu_notifier __cpuinitdata = {
>+	.notifier_call = mca_cpu_callback
>+};
>+
> /*
>  * ia64_mca_init
>  *
>@@ -1954,6 +1985,8 @@ ia64_mca_late_init(void)
> 	if (!mca_init)
> 		return 0;
> 
>+	register_hotcpu_notifier(&mca_cpu_notifier);
>+
> 	/* Setup the CMCI/P vector and handler */
> 	init_timer(&cmc_poll_timer);
> 	cmc_poll_timer.function = ia64_mca_cmc_poll;

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Attachments on bug 426793: 290406 | 290407 | 292457