diff options
| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-09-25 10:07:20 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-09-25 10:07:34 -0400 |
| commit | 15a3eac0784edb73cb2ec0f0c97705ba4bd39b3f (patch) | |
| tree | 6bd3453615be6d634cee4abe28844b8ac769305f /Documentation | |
| parent | 0160676bba69523e8b0ac83f306cce7d342ed7c8 (diff) | |
xen/spinlock: Document the xen_nopvspin parameter.
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 7f9d4f53882..b9589127b3e 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>]]] |