Commit Graph

56 Commits

Author SHA1 Message Date
Qiaowei Ren
90b9995d1d perf: add support to perf event for MBM
Some Intel processor families (e.g. the Intel Xeon processor E5 v3
family) introduced some RDT (Resource Director Technology) features
to monitor or control shared resource. Among these features, MBM
(Memory Bandwidth Monitoring), which is build on the CMT (Cache
Monitoring Technology) infrastructure, provides OS/VMM a way to
monitor bandwidth from one level of cache to another.

With current perf framework, this patch adds support to perf event
for MBM.

Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
2016-05-19 15:57:57 +02:00
Peter Krempa
bb9a80f9fc util: perf: Adhere to coding style of error checks in virPerfEventEnable 2016-05-02 09:06:52 +02:00
Peter Krempa
f7e7994b84 util: perf: Use 'error' label in virPerfCmtEnable
The label is used only for the error path, thus rename cleanup.
2016-05-02 09:06:52 +02:00
Michal Privoznik
2cbdd64adf virPerfReadEvent: Prefer saferead over read
Do I really need to explain why?
Well, if read() is interrupted int the middle of reading, we will
never read the rest (even though it's highly unlikely as we are
reading just 8 bytes).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-03-31 17:25:21 +02:00
Roman Bogorodskiy
4ed5937d71 perf: fix build on non-Linux
* Sync stubbed functions with prototypes
 * Add missing ATTRIBUTE_UNUSED where needed

Pushing under the build breaker rule.
2016-03-29 19:26:47 +03:00
Qiaowei Ren
28b446292b perf: implement a set of util functions for perf event
This patch implement a set of interfaces for perf event. Based on
these interfaces, we can implement internal driver API for perf,
and get the results of perf conuter you care about.

Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
Message-id: 1459171833-26416-4-git-send-email-qiaowei.ren@intel.com
2016-03-29 13:13:05 +01:00