Commit 36028f33 authored Feb 02, 2010 by Mike Travis Committed by H. Peter Anvin Feb 05, 2010

vgaarb: Add user selectability of the number of GPUS in a system



Update the VGA Arbiter to allow the user to select the number
of GPU's supported in a system.

v2: simplify setting of MAX_USER_CARDS, revert back to original default of 16

Signed-off-by: Mike Travis <travis@sgi.com>
LKML-Reference: <4B68D51D.6090401@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Robin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

parent 773a38db

drivers/gpu/vga/Kconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -8,3 +8,11 @@ config VGA_ARB
		are accessed at same time they need some kind of coordination. Please
		see Documentation/vgaarbiter.txt for more details. Select this to
		enable VGA arbiter.

		config VGA_ARB_MAX_GPUS
		int "Maximum number of GPUs"
		default 16
		depends on VGA_ARB
		help
		Reserves space in the kernel to maintain resource locking for
		multiple GPUS. The overhead for each GPU is very small.

drivers/gpu/vga/vgaarb.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -688,7 +688,7 @@ EXPORT_SYMBOL(vga_client_register);
		* the arbiter.
		*/

		#define MAX_USER_CARDS 16
		#define MAX_USER_CARDS CONFIG_VGA_ARB_MAX_GPUS
		#define PCI_INVALID_CARD ((struct pci_dev *)-1UL)

		/*

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