diff options
| author | Liu, Jinsong <jinsong.liu@intel.com> | 2012-06-11 20:38:08 +0800 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-07-19 15:51:39 -0400 |
| commit | f65c9bb3fb725551d3e405f4d092caf24929cebe (patch) | |
| tree | d68e9715ac73dd431709ddf2301a313105688b68 /include/xen/interface/xen.h | |
| parent | 05e36006adc3046f86f2be8652a22d5f77ebd6ea (diff) | |
xen/pcpu: Xen physical cpus online/offline sys interface
This patch provide Xen physical cpus online/offline sys interface.
User can use it for their own purpose, like power saving:
by offlining some cpus when light workload it save power greatly.
Its basic workflow is, user online/offline cpu via sys interface,
then hypercall xen to implement, after done xen inject virq back to dom0,
and then dom0 sync cpu status.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'include/xen/interface/xen.h')
| -rw-r--r-- | include/xen/interface/xen.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h index a890804945e3..0801468f9abe 100644 --- a/include/xen/interface/xen.h +++ b/include/xen/interface/xen.h @@ -80,6 +80,7 @@ #define VIRQ_CONSOLE 2 /* (DOM0) Bytes received on emergency console. */ #define VIRQ_DOM_EXC 3 /* (DOM0) Exceptional event for some domain. */ #define VIRQ_DEBUGGER 6 /* (DOM0) A domain has paused for debugging. */ +#define VIRQ_PCPU_STATE 9 /* (DOM0) PCPU state changed */ /* Architecture-specific VIRQ definitions. */ #define VIRQ_ARCH_0 16 |