[tip:x86/apic] x86/irq: Simplify the way to print IOAPIC entry

[tip-bot for Jiang Liu]

Commit-ID:  a44174ee7b380012cdb63d563617f67bb7757649
Gitweb:     http://git.kernel.org/tip/a44174ee7b380012cdb63d563617f67bb7757649
Author:     Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
AuthorDate: Mon, 13 Apr 2015 14:11:57 +0800
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 24 Apr 2015 15:36:51 +0200

x86/irq: Simplify the way to print IOAPIC entry

Simplify the way to print IOAPIC entry content, so we can remove
native_io_apic_print_entries(), intel_ir_io_apic_print_entries()
and x86_io_apic_ops.print_entries() later.

Folded a patch from Thomas to fix errors in printed pin attributes,
http://www.spinics.net/lists/linux-tip-commits/msg26108.html

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Tested-by: Joerg Roedel <jroedel@xxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: David Cohen <david.a.cohen@xxxxxxxxxxxxxxx>
Cc: Sander Eikelenboom <linux@xxxxxxxxxxxxxx>
Cc: David Vrabel <david.vrabel@xxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Dimitri Sivanich <sivanich@xxxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1428905519-23704-36-git-send-email-jiang.liu@xxxxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/x86/kernel/apic/io_apic.c | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 16d4ba3..3c66096 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1424,6 +1424,33 @@ void ioapic_zap_locks(void)
 	raw_spin_lock_init(&ioapic_lock);
 }
 
+static void io_apic_print_entries(unsigned int apic, unsigned int nr_entries)
+{
+	int i;
+	char buf[256];
+	struct IO_APIC_route_entry entry;
+	struct IR_IO_APIC_route_entry *ir_entry = (void *)&entry;
+
+	printk(KERN_DEBUG "IOAPIC %d:\n", apic);
+	for (i = 0; i <= nr_entries; i++) {
+		entry = ioapic_read_entry(apic, i);
+		snprintf(buf, sizeof(buf),
+			 " pin%02x, %s, %s, %s, V(%02X), IRR(%1d), S(%1d)",
+			 i, entry.mask ? "disabled" : "enabled ",
+			 entry.trigger ? "level" : "edge ",
+			 entry.polarity ? "low " : "high",
+			 entry.vector, entry.irr, entry.delivery_status);
+		if (ir_entry->format)
+			printk(KERN_DEBUG "%s, remapped, I(%04X),  Z(%X)\n",
+			       buf, (ir_entry->index << 15) | ir_entry->index,
+			       ir_entry->zero);
+		else
+			printk(KERN_DEBUG "%s, %s, D(%02X), M(%1d)\n",
+			       buf, entry.dest_mode ? "logical " : "physical",
+			       entry.dest, entry.delivery_mode);
+	}
+}
+
 static void __init print_IO_APIC(int ioapic_idx)
 {
 	union IO_APIC_reg_00 reg_00;
@@ -1477,8 +1504,7 @@ static void __init print_IO_APIC(int ioapic_idx)
 	}
 
 	printk(KERN_DEBUG ".... IRQ redirection table:\n");
-
-	x86_io_apic_ops.print_entries(ioapic_idx, reg_01.bits.entries);
+	io_apic_print_entries(ioapic_idx, reg_01.bits.entries);
 }
 
 void __init print_IO_APICs(void)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/