[libvirt] [PATCH v2 09/17] util: Introduce virResctrlAllocForeachMemory
From: Bing Niu <bing.niu(a)intel.com>
Introduce an API that will traverse the memory bandwidth data calling
a callback function for each defined bandwidth entry.
Signed-off-by: Bing Niu <bing.niu(a)intel.com>
---
src/libvirt_private.syms | 1 +
src/util/virresctrl.c | 33 +++++++++++++++++++++++++++++++++
src/util/virresctrl.h | 9 +++++++++
3 files changed, 43 insertions(+)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index bc489cb..cd598f9 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2649,6 +2649,7 @@ virResctrlAllocAddPID;
virResctrlAllocCreate;
virResctrlAllocDeterminePath;
virResctrlAllocForeachCache;
+virResctrlAllocForeachMemory;
virResctrlAllocFormat;
virResctrlAllocGetID;
virResctrlAllocGetUnused;
diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c
index c22b30f..dc57c89 100644
--- a/src/util/virresctrl.c
+++ b/src/util/virresctrl.c
@@ -965,6 +965,39 @@ virResctrlAllocForeachCache(virResctrlAllocPtr alloc,
}
+/* virResctrlAllocForeachMemory
+ * @alloc: Pointer to an active allocation
+ * @cb: Callback function
+ * @opaque: Opaque data to be passed to @cb
+ *
+ * If available, traverse the defined memory bandwidth allocations and
+ * call the @cb function.
+ *
+ * Returns 0 on success, -1 and immediate failure if the @cb has any failure.
+ */
+int
+virResctrlAllocForeachMemory(virResctrlAllocPtr alloc,
+ virResctrlAllocForeachMemoryCallback cb,
+ void *opaque)
+{
+ size_t i = 0;
+ virResctrlAllocMemBWPtr mem_bw;
+
+ if (!alloc || !alloc->mem_bw)
+ return 0;
+
+ mem_bw = alloc->mem_bw;
+ for (i = 0; i < mem_bw->nbandwidths; i++) {
+ if (mem_bw->bandwidths[i]) {
+ if (cb(i, *mem_bw->bandwidths[i], opaque) < 0)
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
int
virResctrlAllocSetID(virResctrlAllocPtr alloc,
const char *id)
diff --git a/src/util/virresctrl.h b/src/util/virresctrl.h
index d657c06..5ea5b27 100644
--- a/src/util/virresctrl.h
+++ b/src/util/virresctrl.h
@@ -73,6 +73,10 @@ typedef int virResctrlAllocForeachCacheCallback(unsigned int level,
unsigned long long size,
void *opaque);
+typedef int virResctrlAllocForeachMemoryCallback(unsigned int id,
+ unsigned int size,
+ void *opaque);
+
virResctrlAllocPtr
virResctrlAllocNew(void);
@@ -92,6 +96,11 @@ virResctrlAllocForeachCache(virResctrlAllocPtr alloc,
void *opaque);
int
+virResctrlAllocForeachMemory(virResctrlAllocPtr resctrl,
+ virResctrlAllocForeachMemoryCallback cb,
+ void *opaque);
+
+int
virResctrlAllocSetID(virResctrlAllocPtr alloc,
const char *id);
const char *
--
2.7.4