diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 4ee3464d62..23508e2bff 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -1953,6 +1953,7 @@
<event name='context_switches' enabled='no'/>
<event name='cpu_migrations' enabled='no'/>
<event name='page_faults_min' enabled='no'/>
+ <event name='page_faults_maj' enabled='no'/>
</perf>
...
@@ -2073,6 +2074,14 @@
applications running on the platform
perf.page_faults_min |
+
+ page_faults_maj |
+ the count of major page faults, that is, where the
+ page was not present in the page cache, and
+ therefore had to be fetched from storage, by
+ applications running on the platform |
+ perf.page_faults_maj |
+
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index b8914d5f4d..82327c6d9f 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -439,6 +439,7 @@
context_switches
cpu_migrations
page_faults_min
+ page_faults_maj
diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index b7e6c712e2..f6e5c5a760 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -2250,6 +2250,16 @@ void virDomainStatsRecordListFree(virDomainStatsRecordPtr *stats);
*/
# define VIR_PERF_PARAM_PAGE_FAULTS_MIN "page_faults_min"
+/**
+ * VIR_PERF_PARAM_PAGE_FAULTS_MAJ:
+ *
+ * Macro for typed parameter name that represents page_faults_maj
+ * perf event which can be used to measure the count of major page
+ * faults by applications running on the platform. It corresponds
+ * to the "perf.page_faults_maj" field in the *Stats APIs.
+ */
+# define VIR_PERF_PARAM_PAGE_FAULTS_MAJ "page_faults_maj"
+
int virDomainGetPerfEvents(virDomainPtr dom,
virTypedParameterPtr *params,
int *nparams,
diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
index f0e4f8fe37..bfca1eacda 100644
--- a/src/libvirt-domain.c
+++ b/src/libvirt-domain.c
@@ -11266,6 +11266,9 @@ virConnectGetDomainCapabilities(virConnectPtr conn,
* "perf.page_faults_min" - The count of minor page faults as unsigned
* long long. It is produced by the
* page_faults_min perf event.
+ * "perf.page_faults_maj" - The count of major page faults as unsigned
+ * long long. It is produced by the
+ * page_faults_maj perf event.
*
* 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
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 02bd7caa3b..a2177d3742 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -9573,6 +9573,7 @@ qemuDomainSetPerfEvents(virDomainPtr dom,
VIR_PERF_PARAM_CONTEXT_SWITCHES, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_CPU_MIGRATIONS, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_PAGE_FAULTS_MIN, VIR_TYPED_PARAM_BOOLEAN,
+ VIR_PERF_PARAM_PAGE_FAULTS_MAJ, VIR_TYPED_PARAM_BOOLEAN,
NULL) < 0)
return -1;
diff --git a/src/util/virperf.c b/src/util/virperf.c
index 9e41df9c51..b3dd5c7897 100644
--- a/src/util/virperf.c
+++ b/src/util/virperf.c
@@ -46,7 +46,7 @@ VIR_ENUM_IMPL(virPerfEvent, VIR_PERF_EVENT_LAST,
"stalled_cycles_backend", "ref_cpu_cycles",
"cpu_clock", "task_clock", "page_faults",
"context_switches", "cpu_migrations",
- "page_faults_min");
+ "page_faults_min", "page_faults_maj");
struct virPerfEvent {
int type;
@@ -133,6 +133,9 @@ static struct virPerfEventAttr attrs[] = {
{.type = VIR_PERF_EVENT_PAGE_FAULTS_MIN,
.attrType = PERF_TYPE_SOFTWARE,
.attrConfig = PERF_COUNT_SW_PAGE_FAULTS_MIN},
+ {.type = VIR_PERF_EVENT_PAGE_FAULTS_MAJ,
+ .attrType = PERF_TYPE_SOFTWARE,
+ .attrConfig = PERF_COUNT_SW_PAGE_FAULTS_MAJ},
};
typedef struct virPerfEventAttr *virPerfEventAttrPtr;
diff --git a/src/util/virperf.h b/src/util/virperf.h
index aa90273a22..49d4ba7c6b 100644
--- a/src/util/virperf.h
+++ b/src/util/virperf.h
@@ -53,6 +53,7 @@ typedef enum {
VIR_PERF_EVENT_CONTEXT_SWITCHES, /* Count of context switches */
VIR_PERF_EVENT_CPU_MIGRATIONS, /* Count of cpu migrations */
VIR_PERF_EVENT_PAGE_FAULTS_MIN, /* Count of minor page faults */
+ VIR_PERF_EVENT_PAGE_FAULTS_MAJ, /* Count of major page faults */
VIR_PERF_EVENT_LAST
} virPerfEventType;
diff --git a/tests/genericxml2xmlindata/generic-perf.xml b/tests/genericxml2xmlindata/generic-perf.xml
index 62ad973168..a5b6dfb50d 100644
--- a/tests/genericxml2xmlindata/generic-perf.xml
+++ b/tests/genericxml2xmlindata/generic-perf.xml
@@ -32,6 +32,7 @@
+
diff --git a/tools/virsh.pod b/tools/virsh.pod
index 5c0876b1b2..3269e9c6b3 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -970,6 +970,7 @@ I<--perf> returns the statistics of all enabled perf events:
"perf.context_switches" - the count of context switches
"perf.cpu_migrations" - the count of cpu migrations
"perf.page_faults_min" - the count of minor page faults
+ "perf.page_faults_maj" - the count of major page faults
See the B command for more details about each event.
@@ -2351,6 +2352,8 @@ B
applications running on the platform.
page_faults_min - Provides the count minor page faults
by applications running on the platform.
+ page_faults_maj - Provides the count major page faults
+ by applications running on the platform.
B: The statistics can be retrieved using the B command using
the I<--perf> flag.