linux-stable/arch/x86/platform/uv
Andrew Banman 2fe9a5c6ad x86/platform/uv/BAU: Disable BAU on single hub configurations
The BAU confers no benefit to a UV system running with only one hub/socket.
Permanently disable the BAU driver if there are less than two hubs online
to avoid BAU overhead. We have observed failed boots on single-socket UV4
systems caused by BAU that are avoided with this patch.

Also, while at it, consolidate initialization error blocks and fix a
memory leak.

Signed-off-by: Andrew Banman <abanman@hpe.com>
Acked-by: Russ Anderson <rja@hpe.com>
Acked-by: Mike Travis <mike.travis@hpe.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: tony.ernst@hpe.com
Link: http://lkml.kernel.org/r/1500588351-78016-1-git-send-email-abanman@hpe.com
[ Minor cleanups. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-07-21 09:56:25 +02:00
..
bios_uv.c x86/platform/UV: Fix support for EFI_OLD_MEMMAP after BIOS callback updates 2016-10-20 08:47:58 +02:00
Makefile x86/UV: Move NMI support 2013-09-24 09:02:02 +02:00
tlb_uv.c x86/platform/uv/BAU: Disable BAU on single hub configurations 2017-07-21 09:56:25 +02:00
uv_irq.c x86/uv: Create named irq domain 2017-06-22 18:21:10 +02:00
uv_nmi.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
uv_sysfs.c x86/platform/UV: Add obtaining GAM Range Table from UV BIOS 2016-05-04 08:48:50 +02:00
uv_time.c x86/uv/time: Set ->min_delta_ticks and ->max_delta_ticks 2017-04-14 13:11:23 -07:00