On Mon, Mar 28, 2016 at 09:30:30PM +0800, Qiaowei Ren wrote:
This patch adds new xml element, and so we can have the option of also having perf events enabled immediately at startup.
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com> --- docs/schemas/domaincommon.rng | 27 +++++++ src/conf/domain_conf.c | 111 ++++++++++++++++++++++++++ src/conf/domain_conf.h | 10 +++ src/qemu/qemu_driver.c | 26 ++++++ src/qemu/qemu_process.c | 8 +- tests/domainschemadata/domain-perf-simple.xml | 20 +++++ 6 files changed, 200 insertions(+), 2 deletions(-) create mode 100644 tests/domainschemadata/domain-perf-simple.xml
+static void +virDomainPerfDefFormat(virBufferPtr buf, virDomainPerfDefPtr perf) +{ + size_t i; + virBufferAddLit(buf, "<perf>\n");
We must skip ading of <perf></perf> when no perf events are enabled otherwise we break many existing test cases. eg add in bool wantPerf = false; for (i = 0; i < VIR_PERF_EVENT_LAST; i++) { if (perf->events[i]) wantPerf = true; } if (!wantPerf) return; before this line.
+ virBufferAdjustIndent(buf, 2); + + for (i = 0; i < VIR_PERF_EVENT_LAST; i++) { + if (perf->events[i]) + virBufferAsprintf(buf, "<event name='%s' enabled='%s'/>\n", + virPerfEventTypeToString(i), + virTristateBoolTypeToString(perf->events[i])); + } + + virBufferAdjustIndent(buf, -2); + virBufferAddLit(buf, "</perf>\n"); +}
Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|