On Sat, Jul 28, 2018 at 11:31:26PM +0530, Sukrit Bhatnagar wrote:
> Using the new VIR_DEFINE_AUTOPTR_FUNC macro defined in
> src/util/viralloc.h, define a new wrapper around an existing
> cleanup function which will be called when a variable declared
> with VIR_AUTOPTR macro goes out of scope. Also
From: Bing Niu
Add return value check to virResctrlAllocForeachCache in
virDomainCachetuneDefFormat. The virResctrlAllocForeachCache dose have
return value, so need check return value to make sure function executed
without error.
Signed-off-by: Bing Niu
---
src/conf/domain_conf.c | 8
From: Bing Niu
Factor out vcpus overlapping detecting part from
virDomainCachetuneDefParse and introduce virDomainResctrlVcpuMatch.
Instead of allocating virResctrlAllocPtr by default, allocating
virResctrlAllocPtr after confirm vcpus not overlap with existing ones.
And virDomainResctrlVcpuMatch
From: Bing Niu
Introduce a new section memorytune to support memory bandwidth allocation.
This is consistent with existing cachetune. As the example:
below:
..
vpus --- vpus subjected to this memory bandwidth.
id--- on which node memory bandwidth to be
From: Bing Niu
Introduce virResctrlMemoryBandwidthSubtract and
virResctrlAllocMemoryBandwidth to be used as part of
the virResctrlAllocAssign processing to configure
the available memory bandwidth.
Signed-off-by: Bing Niu
---
src/util/virresctrl.c | 105
From: Bing Niu
If we have some membw_info data, then we need to calculate the number
of MBA controllers on the system. The value cannot be obtained from a
direct query to the RDT kernel module, but it is the same as the last
level cache value which is calculated by traversing the cache hierarchy
From: Bing Niu
Introduce virResctrlAllocMemoryBandwidthFormat and
virResctrlAllocParseMemoryBandwidthLine which will format
and parse an entry in the schemata file for MBA.
Signed-off-by: Bing Niu
---
src/util/virresctrl.c | 141 ++
1 file change
From: Bing Niu
Introduce an API to allow setting of the MBA from domain XML.
Signed-off-by: Bing Niu
---
src/libvirt_private.syms | 1 +
src/util/virresctrl.c| 48
src/util/virresctrl.h| 5 +
3 files changed, 54 insertions(+)
diff
From: Bing Niu
Factor out vcpus virDomainResctrlDef update from
virDomainCachetuneDefParse and introduce virDomainResctrlAppend.
virDomainResctrlAppend will format vcpus string and append a new
virDomainResctrlDef to virDomainDefPtr. So that this logic can
be reusable.
Signed-off-by: Bing Niu
-
From: Bing Niu
Add new XML section to report host's memory bandwidth allocation
capability. The format as below example:
.
granularity granularity of memory bandwidth, unit percentage.
min minimum memory bandwidth allowed, unit percentag
From: Bing Niu
Refactor virResctrlAllocFormat so that it is easy to support other
resource allocation technologies.
Signed-off-by: Bing Niu
Reviewed-by: John Ferlan
---
src/util/virresctrl.c | 41 ++---
1 file changed, 26 insertions(+), 15 deletions(-)
dif
From: Bing Niu
Resctrl not only supports cache tuning, but also memory bandwidth
tuning. Renaming cachetune to resctrl to reflect that. With resctrl,
all allocation for different resources (cache, memory bandwidth) are
aggregated and represented by a virResctrlAllocPtr inside
virDomainResctrlDef.
From: Bing Niu
Introduce an API that will traverse the memory bandwidth data calling
a callback function for each defined bandwidth entry.
Signed-off-by: Bing Niu
---
src/libvirt_private.syms | 1 +
src/util/virresctrl.c| 33 +
src/util/virresctrl.h| 9
From: Bing Niu
Extract vcpus parsing part from virDomainCachetuneDefParse into one
function called virDomainResctrlParseVcpus. So that vcpus parsing logic
can be reused by other resource control technologies. Adjust error
message and use node->name so that the error message can fit to all
technol
From: Bing Niu
This series is to introduce RDT memory bandwidth allocation support by extending
current virresctrl implementation.
The Memory Bandwidth Allocation (MBA) feature provides indirect and approximate
control over memory bandwidth available per-core. This feature provides a
method to
From: Bing Niu
Some functions in virresctrl are for CAT only, while some of other
functions are for resource allocation, not just CAT. So change
their names to reflect the reality.
Signed-off-by: Bing Niu
Reviewed-by: John Ferlan
---
src/conf/domain_conf.c | 8
src/libvirt_private
From: Bing Niu
Introducing virResctrlInfoMemBW for the information memory bandwidth
allocation information.
Signed-off-by: Bing Niu
Reviewed-by: John Ferlan
---
src/util/virresctrl.c | 84 +++
1 file changed, 84 insertions(+)
diff --git a/src/u
From: Bing Niu
Separate resctrl common information parts from CAT specific parts,
so that common information parts can be reused among different
resource allocation technologies.
Signed-off-by: Bing Niu
Reviewed-by: John Ferlan
---
src/util/virresctrl.c | 32 +++-
From: Bing Niu
Add memory bandwidth allocation support to virresctrl class.
Introducing virResctrlAllocMemBW which is used for allocating memory
bandwidth. Following virResctrlAllocPerType, it also employs a
nested sparse array to indicate whether allocation is available for
particular last level
On 2018.07.27 16:45:55 +0200, Erik Skultety wrote:
> On Thu, Jul 26, 2018 at 06:04:10PM +0200, Cornelia Huck wrote:
> > On Thu, 26 Jul 2018 17:43:45 +0200
> > Erik Skultety wrote:
> >
> > > On Thu, Jul 26, 2018 at 05:30:07PM +0200, Cornelia Huck wrote:
> > > > One thing I noticed is that we have s
BACKGROUND
As the live migration of mdev is going to be supported in VFIO, a scheme of
deciding if a mdev could be migratable between the source machine and the
destination machine is needed. Mostly, this email is going to discuss a
possible solution which needs fewer modifications of libvirt/V
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