mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-10-22 14:09:22 +00:00
perf: add task_clock software perf event support
This patch adds support and documentation for the task_clock perf event. Signed-off-by: Nitesh Konkar <nitkon12@linux.vnet.ibm.com>
This commit is contained in:
parent
f372a862ac
commit
20dc690865
@ -1948,6 +1948,7 @@
|
|||||||
<event name='stalled_cycles_backend' enabled='no'/>
|
<event name='stalled_cycles_backend' enabled='no'/>
|
||||||
<event name='ref_cpu_cycles' enabled='no'/>
|
<event name='ref_cpu_cycles' enabled='no'/>
|
||||||
<event name='cpu_clock' enabled='no'/>
|
<event name='cpu_clock' enabled='no'/>
|
||||||
|
<event name='task_clock' enabled='no'/>
|
||||||
</perf>
|
</perf>
|
||||||
...
|
...
|
||||||
</pre>
|
</pre>
|
||||||
@ -2033,6 +2034,13 @@
|
|||||||
the platform</td>
|
the platform</td>
|
||||||
<td><code>perf.cpu_clock</code></td>
|
<td><code>perf.cpu_clock</code></td>
|
||||||
</tr>
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td><code>task_clock</code></td>
|
||||||
|
<td>the count of task clock time, as measured by a monotonic
|
||||||
|
high-resolution CPU timer, specific to the task that
|
||||||
|
is run by applications running on the platform</td>
|
||||||
|
<td><code>perf.task_clock</code></td>
|
||||||
|
</tr>
|
||||||
</table>
|
</table>
|
||||||
|
|
||||||
<h3><a name="elementsDevices">Devices</a></h3>
|
<h3><a name="elementsDevices">Devices</a></h3>
|
||||||
|
@ -434,6 +434,7 @@
|
|||||||
<value>stalled_cycles_backend</value>
|
<value>stalled_cycles_backend</value>
|
||||||
<value>ref_cpu_cycles</value>
|
<value>ref_cpu_cycles</value>
|
||||||
<value>cpu_clock</value>
|
<value>cpu_clock</value>
|
||||||
|
<value>task_clock</value>
|
||||||
</choice>
|
</choice>
|
||||||
</attribute>
|
</attribute>
|
||||||
<attribute name="enabled">
|
<attribute name="enabled">
|
||||||
|
@ -2199,6 +2199,17 @@ void virDomainStatsRecordListFree(virDomainStatsRecordPtr *stats);
|
|||||||
*/
|
*/
|
||||||
# define VIR_PERF_PARAM_CPU_CLOCK "cpu_clock"
|
# define VIR_PERF_PARAM_CPU_CLOCK "cpu_clock"
|
||||||
|
|
||||||
|
/**
|
||||||
|
* VIR_PERF_PARAM_TASK_CLOCK:
|
||||||
|
*
|
||||||
|
* Macro for typed parameter name that represents task_clock
|
||||||
|
* perf event which can be used to measure the count of task
|
||||||
|
* clock time by applications running on the platform. It
|
||||||
|
* corresponds to the "perf.task_clock" field in the *Stats
|
||||||
|
* APIs.
|
||||||
|
*/
|
||||||
|
# define VIR_PERF_PARAM_TASK_CLOCK "task_clock"
|
||||||
|
|
||||||
int virDomainGetPerfEvents(virDomainPtr dom,
|
int virDomainGetPerfEvents(virDomainPtr dom,
|
||||||
virTypedParameterPtr *params,
|
virTypedParameterPtr *params,
|
||||||
int *nparams,
|
int *nparams,
|
||||||
|
@ -11252,6 +11252,8 @@ virConnectGetDomainCapabilities(virConnectPtr conn,
|
|||||||
* ref_cpu_cycles perf event.
|
* ref_cpu_cycles perf event.
|
||||||
* "perf.cpu_clock" - The count of cpu clock time as unsigned long long.
|
* "perf.cpu_clock" - The count of cpu clock time as unsigned long long.
|
||||||
* It is produced by the cpu_clock perf event.
|
* It is produced by the cpu_clock perf event.
|
||||||
|
* "perf.task_clock" - The count of task clock time as unsigned long long.
|
||||||
|
* It is produced by the task_clock perf event.
|
||||||
*
|
*
|
||||||
* Note that entire stats groups or individual stat fields may be missing from
|
* Note that entire stats groups or individual stat fields may be missing from
|
||||||
* the output in case they are not supported by the given hypervisor, are not
|
* the output in case they are not supported by the given hypervisor, are not
|
||||||
|
@ -9568,6 +9568,7 @@ qemuDomainSetPerfEvents(virDomainPtr dom,
|
|||||||
VIR_PERF_PARAM_STALLED_CYCLES_BACKEND, VIR_TYPED_PARAM_BOOLEAN,
|
VIR_PERF_PARAM_STALLED_CYCLES_BACKEND, VIR_TYPED_PARAM_BOOLEAN,
|
||||||
VIR_PERF_PARAM_REF_CPU_CYCLES, VIR_TYPED_PARAM_BOOLEAN,
|
VIR_PERF_PARAM_REF_CPU_CYCLES, VIR_TYPED_PARAM_BOOLEAN,
|
||||||
VIR_PERF_PARAM_CPU_CLOCK, VIR_TYPED_PARAM_BOOLEAN,
|
VIR_PERF_PARAM_CPU_CLOCK, VIR_TYPED_PARAM_BOOLEAN,
|
||||||
|
VIR_PERF_PARAM_TASK_CLOCK, VIR_TYPED_PARAM_BOOLEAN,
|
||||||
NULL) < 0)
|
NULL) < 0)
|
||||||
return -1;
|
return -1;
|
||||||
|
|
||||||
|
@ -44,7 +44,7 @@ VIR_ENUM_IMPL(virPerfEvent, VIR_PERF_EVENT_LAST,
|
|||||||
"branch_instructions", "branch_misses",
|
"branch_instructions", "branch_misses",
|
||||||
"bus_cycles", "stalled_cycles_frontend",
|
"bus_cycles", "stalled_cycles_frontend",
|
||||||
"stalled_cycles_backend", "ref_cpu_cycles",
|
"stalled_cycles_backend", "ref_cpu_cycles",
|
||||||
"cpu_clock");
|
"cpu_clock", "task_clock");
|
||||||
|
|
||||||
struct virPerfEvent {
|
struct virPerfEvent {
|
||||||
int type;
|
int type;
|
||||||
@ -116,6 +116,9 @@ static struct virPerfEventAttr attrs[] = {
|
|||||||
{.type = VIR_PERF_EVENT_CPU_CLOCK,
|
{.type = VIR_PERF_EVENT_CPU_CLOCK,
|
||||||
.attrType = PERF_TYPE_SOFTWARE,
|
.attrType = PERF_TYPE_SOFTWARE,
|
||||||
.attrConfig = PERF_COUNT_SW_CPU_CLOCK},
|
.attrConfig = PERF_COUNT_SW_CPU_CLOCK},
|
||||||
|
{.type = VIR_PERF_EVENT_TASK_CLOCK,
|
||||||
|
.attrType = PERF_TYPE_SOFTWARE,
|
||||||
|
.attrConfig = PERF_COUNT_SW_TASK_CLOCK},
|
||||||
};
|
};
|
||||||
typedef struct virPerfEventAttr *virPerfEventAttrPtr;
|
typedef struct virPerfEventAttr *virPerfEventAttrPtr;
|
||||||
|
|
||||||
|
@ -48,6 +48,7 @@ typedef enum {
|
|||||||
processor pipeline */
|
processor pipeline */
|
||||||
VIR_PERF_EVENT_REF_CPU_CYCLES, /* Count of ref cpu cycles */
|
VIR_PERF_EVENT_REF_CPU_CYCLES, /* Count of ref cpu cycles */
|
||||||
VIR_PERF_EVENT_CPU_CLOCK, /* Count of cpu clock time*/
|
VIR_PERF_EVENT_CPU_CLOCK, /* Count of cpu clock time*/
|
||||||
|
VIR_PERF_EVENT_TASK_CLOCK, /* Count of task clock time*/
|
||||||
|
|
||||||
VIR_PERF_EVENT_LAST
|
VIR_PERF_EVENT_LAST
|
||||||
} virPerfEventType;
|
} virPerfEventType;
|
||||||
|
@ -27,6 +27,7 @@
|
|||||||
<event name='stalled_cycles_backend' enabled='yes'/>
|
<event name='stalled_cycles_backend' enabled='yes'/>
|
||||||
<event name='ref_cpu_cycles' enabled='yes'/>
|
<event name='ref_cpu_cycles' enabled='yes'/>
|
||||||
<event name='cpu_clock' enabled='yes'/>
|
<event name='cpu_clock' enabled='yes'/>
|
||||||
|
<event name='task_clock' enabled='yes'/>
|
||||||
</perf>
|
</perf>
|
||||||
<devices>
|
<devices>
|
||||||
</devices>
|
</devices>
|
||||||
|
@ -965,6 +965,7 @@ I<--perf> returns the statistics of all enabled perf events:
|
|||||||
cpu cycles
|
cpu cycles
|
||||||
"perf.ref_cpu_cycles" - the count of ref cpu cycles
|
"perf.ref_cpu_cycles" - the count of ref cpu cycles
|
||||||
"perf.cpu_clock" - the count of cpu clock time
|
"perf.cpu_clock" - the count of cpu clock time
|
||||||
|
"perf.task_clock" - the count of task clock time
|
||||||
|
|
||||||
See the B<perf> command for more details about each event.
|
See the B<perf> command for more details about each event.
|
||||||
|
|
||||||
@ -2336,6 +2337,8 @@ B<Valid perf event names>
|
|||||||
applications running on the platform.
|
applications running on the platform.
|
||||||
cpu_clock - Provides the cpu clock time consumed by
|
cpu_clock - Provides the cpu clock time consumed by
|
||||||
applications running on the platform.
|
applications running on the platform.
|
||||||
|
task_clock - Provides the task clock time consumed by
|
||||||
|
applications running on the platform.
|
||||||
|
|
||||||
B<Note>: The statistics can be retrieved using the B<domstats> command using
|
B<Note>: The statistics can be retrieved using the B<domstats> command using
|
||||||
the I<--perf> flag.
|
the I<--perf> flag.
|
||||||
|
Loading…
Reference in New Issue
Block a user