* [PATCH] xen/spinlock: Document the xen_nopvspin parameter.
@ 2013-09-25 14:09 Konrad Rzeszutek Wilk
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From: Konrad Rzeszutek Wilk @ 2013-09-25 14:09 UTC (permalink / raw)
To: xen-devel, linux-kernel; +Cc: Konrad Rzeszutek Wilk
Which disables in the ticketlock slowpath the Xen PV optimization's.
Useful for diagnosing issues and comparing benchmarks in
over-commit CPU scenarios.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
Documentation/kernel-parameters.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 7f9d4f5..b958912 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3412,6 +3412,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
the unplug protocol
never -- do not unplug even if version check succeeds
+ xen_nopvspin [X86,XEN]
+ Disables the ticketlock slowpath using Xen PV
+ optimizations.
+
xirc2ps_cs= [NET,PCMCIA]
Format:
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
--
1.8.3.1
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2013-09-25 14:09 [PATCH] xen/spinlock: Document the xen_nopvspin parameter Konrad Rzeszutek Wilk
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