The patch titled
genirq: x86_64 irq: Reenable migrating irqs to other cpus
has been removed from the -mm tree. Its filename is
genirq-x86_64-irq-reenable-migrating-irqs-to-other-cpus.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: genirq: x86_64 irq: Reenable migrating irqs to other cpus
From: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
In the latest changes the code for migrating x86_64 irqs was dropped. This
reads it in a fashion that will work even if we change the vector on level
triggered irqs when we migrate them.
[akpm@xxxxxxxx: build fix]
Signed-off-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Rajesh Shah <rajesh.shah@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxx>
Cc: "Protasevich, Natalie" <Natalie.Protasevich@xxxxxxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/x86_64/kernel/io_apic.c | 36 ++++++++++++++++++++++++++++++---
1 file changed, 33 insertions(+), 3 deletions(-)
diff -puN arch/x86_64/kernel/io_apic.c~genirq-x86_64-irq-reenable-migrating-irqs-to-other-cpus arch/x86_64/kernel/io_apic.c
--- a/arch/x86_64/kernel/io_apic.c~genirq-x86_64-irq-reenable-migrating-irqs-to-other-cpus
+++ a/arch/x86_64/kernel/io_apic.c
@@ -1254,18 +1254,48 @@ static int ioapic_retrigger_vector(unsig
* races.
*/
-static void ack_apic(unsigned int vector)
+static void ack_apic(unsigned int irq)
{
ack_APIC_irq();
}
+static void ack_apic_edge(unsigned int irq)
+{
+ move_native_irq(irq);
+ ack_APIC_irq();
+}
+
+static void ack_apic_level(unsigned int irq)
+{
+ int do_unmask_irq = 0;
+
+#if defined(CONFIG_GENERIC_PENDING_IRQ) || defined(CONFIG_IRQBALANCE)
+ /* If we are moving the irq we need to mask it */
+ if (unlikely(irq_desc[irq].status & IRQ_MOVE_PENDING)) {
+ do_unmask_irq = 1;
+ mask_IO_APIC_irq(irq);
+ }
+#endif
+
+ /*
+ * We must acknowledge the irq before we move it or the acknowledge will
+ * not propogate properly.
+ */
+ ack_APIC_irq();
+
+ /* Now we can move and renable the irq */
+ move_masked_irq(irq);
+ if (unlikely(do_unmask_irq))
+ unmask_IO_APIC_irq(irq);
+}
+
static struct irq_chip ioapic_chip __read_mostly = {
.name = "IO-APIC",
.startup = startup_ioapic_vector,
.mask = mask_ioapic_vector,
.unmask = unmask_ioapic_vector,
- .ack = ack_apic,
- .eoi = ack_apic,
+ .ack = ack_apic_edge,
+ .eoi = ack_apic_level,
#ifdef CONFIG_SMP
.set_affinity = set_ioapic_affinity_vector,
#endif
_
Patches currently in -mm which might be from ebiederm@xxxxxxxxxxxx are
origin.patch
git-scsi-misc.patch
insert-local-and-io-apics-into-resource-map.patch
i386-distinguish-absolute-symbols.patch
i386-define-__pa_symbol.patch
i386-setupc-reserve-kernel-memory-starting-from-_text.patch
i386-config_physical_start-cleanup.patch
make-linux-elfh-safe-to-be-included-in-assembly-files.patch
elf-add-elfosabi_standalone-to-elfh.patch
kallsyms-generate-relocatable-symbols.patch
i386-relocatable-kernel-support.patch
genirq-clean-up-irq-flow-type-naming.patch
pidhash-temporary-debug-checks.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
