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From b6573a089823817a1aa7ae19d7df3aed4845508e Mon Sep 17 00:00:00 2001
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Message-Id: <b6573a089823817a1aa7ae19d7df3aed4845508e@dist-git>
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From: Bing Niu <bing.niu@intel.com>
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Date: Mon, 15 Apr 2019 17:32:52 +0200
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Subject: [PATCH] util: Introduce virResctrlAllocForeachMemory
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Introduce an API that will traverse the memory bandwidth data calling
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a callback function for each defined bandwidth entry.
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Signed-off-by: Bing Niu <bing.niu@intel.com>
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Reviewed-by: John Ferlan <jferlan@redhat.com>
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(cherry picked from commit 10e699dac9f86a4a266a43a5190def7756f3b762)
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1468650
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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Message-Id: <40beb201ddf7c987958e792e47925e8438a5984f.1555342313.git.phrdina@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/libvirt_private.syms | 1 +
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src/util/virresctrl.c | 33 +++++++++++++++++++++++++++++++++
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src/util/virresctrl.h | 9 +++++++++
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3 files changed, 43 insertions(+)
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diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
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index a3b30bf675..de328d7d22 100644
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--- a/src/libvirt_private.syms
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+++ b/src/libvirt_private.syms
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@@ -2658,6 +2658,7 @@ virResctrlAllocAddPID;
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virResctrlAllocCreate;
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virResctrlAllocDeterminePath;
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virResctrlAllocForeachCache;
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+virResctrlAllocForeachMemory;
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virResctrlAllocFormat;
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virResctrlAllocGetID;
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virResctrlAllocGetUnused;
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diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c
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index 21a9247cb6..45fc6fc847 100644
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--- a/src/util/virresctrl.c
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+++ b/src/util/virresctrl.c
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@@ -965,6 +965,39 @@ virResctrlAllocForeachCache(virResctrlAllocPtr alloc,
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}
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+/* virResctrlAllocForeachMemory
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+ * @alloc: Pointer to an active allocation
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+ * @cb: Callback function
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+ * @opaque: Opaque data to be passed to @cb
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+ *
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+ * If available, traverse the defined memory bandwidth allocations and
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+ * call the @cb function.
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+ *
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+ * Returns 0 on success, -1 and immediate failure if the @cb has any failure.
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+ */
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+int
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+virResctrlAllocForeachMemory(virResctrlAllocPtr alloc,
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+ virResctrlAllocForeachMemoryCallback cb,
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+ void *opaque)
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+{
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+ size_t i = 0;
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+ virResctrlAllocMemBWPtr mem_bw;
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+
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+ if (!alloc || !alloc->mem_bw)
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+ return 0;
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+
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+ mem_bw = alloc->mem_bw;
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+ for (i = 0; i < mem_bw->nbandwidths; i++) {
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+ if (mem_bw->bandwidths[i]) {
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+ if (cb(i, *mem_bw->bandwidths[i], opaque) < 0)
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+ return -1;
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+ }
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+ }
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+
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+ return 0;
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+}
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+
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+
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int
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virResctrlAllocSetID(virResctrlAllocPtr alloc,
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const char *id)
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diff --git a/src/util/virresctrl.h b/src/util/virresctrl.h
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index d657c06008..5ea5b27d3b 100644
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--- a/src/util/virresctrl.h
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+++ b/src/util/virresctrl.h
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@@ -73,6 +73,10 @@ typedef int virResctrlAllocForeachCacheCallback(unsigned int level,
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unsigned long long size,
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void *opaque);
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+typedef int virResctrlAllocForeachMemoryCallback(unsigned int id,
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+ unsigned int size,
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+ void *opaque);
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+
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virResctrlAllocPtr
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virResctrlAllocNew(void);
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@@ -91,6 +95,11 @@ virResctrlAllocForeachCache(virResctrlAllocPtr alloc,
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virResctrlAllocForeachCacheCallback cb,
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void *opaque);
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+int
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+virResctrlAllocForeachMemory(virResctrlAllocPtr resctrl,
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+ virResctrlAllocForeachMemoryCallback cb,
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+ void *opaque);
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+
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int
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virResctrlAllocSetID(virResctrlAllocPtr alloc,
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const char *id);
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--
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2.21.0
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