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From bd5cb5d5dfff79f092c843116876837d50b60250 Mon Sep 17 00:00:00 2001
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Message-Id: <bd5cb5d5dfff79f092c843116876837d50b60250@dist-git>
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From: Bing Niu <bing.niu@intel.com>
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Date: Mon, 15 Apr 2019 17:32:46 +0200
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Subject: [PATCH] util: Refactor virResctrlAllocFormat of virresctrl
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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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Refactor virResctrlAllocFormat so that it is easy to support other
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resource allocation technologies.
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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 65bae2f18c27c4a30a8ea675b7c3767cdfbe4c70)
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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: <18dd3a283af009213d718a81f66fe625f6335ece.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/util/virresctrl.c | 41 ++++++++++++++++++++++++++---------------
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 1 file changed, 26 insertions(+), 15 deletions(-)
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diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c
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index 313f964f21..a38c9261b6 100644
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--- a/src/util/virresctrl.c
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+++ b/src/util/virresctrl.c
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@@ -849,17 +849,14 @@ virResctrlAllocGetID(virResctrlAllocPtr alloc)
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 }
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-char *
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-virResctrlAllocFormat(virResctrlAllocPtr alloc)
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+static int
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+virResctrlAllocFormatCache(virResctrlAllocPtr alloc,
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+                           virBufferPtr buf)
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 {
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-    virBuffer buf = VIR_BUFFER_INITIALIZER;
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     unsigned int level = 0;
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     unsigned int type = 0;
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     unsigned int cache = 0;
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-    if (!alloc)
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-        return NULL;
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-
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     for (level = 0; level < alloc->nlevels; level++) {
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         virResctrlAllocPerLevelPtr a_level = alloc->levels[level];
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@@ -872,7 +869,7 @@ virResctrlAllocFormat(virResctrlAllocPtr alloc)
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             if (!a_type)
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                 continue;
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-            virBufferAsprintf(&buf, "L%u%s:", level, virResctrlTypeToString(type));
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+            virBufferAsprintf(buf, "L%u%s:", level, virResctrlTypeToString(type));
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             for (cache = 0; cache < a_type->nmasks; cache++) {
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                 virBitmapPtr mask = a_type->masks[cache];
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@@ -882,21 +879,35 @@ virResctrlAllocFormat(virResctrlAllocPtr alloc)
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                     continue;
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                 mask_str = virBitmapToString(mask, false, true);
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-                if (!mask_str) {
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-                    virBufferFreeAndReset(&buf;;
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-                    return NULL;
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-                }
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+                if (!mask_str)
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+                    return -1;
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-                virBufferAsprintf(&buf, "%u=%s;", cache, mask_str);
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+                virBufferAsprintf(buf, "%u=%s;", cache, mask_str);
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                 VIR_FREE(mask_str);
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             }
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-            virBufferTrim(&buf, ";", 1);
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-            virBufferAddChar(&buf, '\n');
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+            virBufferTrim(buf, ";", 1);
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+            virBufferAddChar(buf, '\n');
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         }
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     }
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-    virBufferCheckError(&buf;;
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+    return virBufferCheckError(buf);
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+}
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+
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+
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+char *
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+virResctrlAllocFormat(virResctrlAllocPtr alloc)
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+{
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+    virBuffer buf = VIR_BUFFER_INITIALIZER;
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+
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+    if (!alloc)
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+        return NULL;
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+
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+    if (virResctrlAllocFormatCache(alloc, &buf) < 0) {
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+        virBufferFreeAndReset(&buf;;
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+        return NULL;
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+    }
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+
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     return virBufferContentAndReset(&buf;;
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 }
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-- 
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2.21.0
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