Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 36028f33 authored by Mike Travis's avatar Mike Travis Committed by H. Peter Anvin
Browse files

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: default avatarMike 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarH. 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)



/*