[libvirt] [RFC] [Patch] Make hugepage testcase arch-agnostic
by Prerna Saxena
Hi,
I have attached this patch as a response to a recent failure observed on PowerPC architecture by commit
311b4a67.
This patch introduces a check for dynamically obtaining system page size for test hugepages-pages6 under 'qemuxml2argv' suite. ( See patch for more verbose problem description)
This patch is not the most perfect implementation -- it fails syntax check; and has a Makefile-driven cleanup pending. I will be happy to deck it up and send it if the community concurs with this
approach.
We could also implement this via a shell script ( just like 'virt-test-aa-helper') but I couldnt find an easy way to determine host page size.
Awaiting community responses,
Prerna
>From 8a64d4d22e2e65158d3caa45b615ca9a263f841f Mon Sep 17 00:00:00 2001
From: Prerna Saxena <prerna(a)linux.vnet.ibm.com>
Date: Mon, 2 Feb 2015 10:48:48 +0530
Subject: [PATCH] Commit 311b4a67 introduces a test for normal-page backed
guest XML. However, it hardcodes the page size to 4 KB which is only valid
for Intel Make check consequently fails on PowerPC where page size is 64KB
This makes the hugepages-pages6 test more modular, and enables the page size
to be picked up at runtime.
---
.../qemuxml2argv-hugepages-pages6.template | 32 ++++++++++++++++++++++
tests/qemuxml2argvtest.c | 24 +++++++++++++++-
2 files changed, 55 insertions(+), 1 deletion(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages6.template
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages6.template b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages6.template
new file mode 100644
index 0000000..8b9b995
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages6.template
@@ -0,0 +1,32 @@
+<domain type='qemu'>
+ <name>SomeDummyHugepagesGuest</name>
+ <uuid>ef1bdff4-27f3-4e85-a807-5fb4d58463cc</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <memoryBacking>
+ <hugepages>
+ <page size='%llu' unit='KiB'/>
+ </hugepages>
+ </memoryBacking>
+ <vcpu placement='static'>2</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'/>
+ <controller type='ide' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 89afa81..a16d937 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -479,6 +479,11 @@ mymain(void)
{
int ret = 0;
bool skipLegacyCPUs = false;
+ const long system_page_size = sysconf(_SC_PAGESIZE) / 1024;
+ int fd_in;
+ FILE *f_out;
+ char *template, *xml = NULL;
+ char buf[1000];
abs_top_srcdir = getenv("abs_top_srcdir");
if (!abs_top_srcdir)
@@ -702,7 +707,24 @@ mymain(void)
DO_TEST_FAILURE("hugepages-pages4", QEMU_CAPS_MEM_PATH,
QEMU_CAPS_OBJECT_MEMORY_RAM, QEMU_CAPS_OBJECT_MEMORY_FILE);
DO_TEST("hugepages-pages5", QEMU_CAPS_MEM_PATH);
- DO_TEST("hugepages-pages6", NONE);
+
+ if (virAsprintf(&template, "%s/qemuxml2argvdata/qemuxml2argv-%s.template",
+ abs_srcdir, "hugepages-pages6") < 0 ||
+ virAsprintf(&xml, "%s/qemuxml2argvdata/qemuxml2argv-%s.xml",
+ abs_srcdir, "hugepages-pages6") < 0)
+ return EXIT_FAILURE;
+ fd_in = open(template, O_RDONLY);
+ f_out = fopen(xml, "w");
+
+ if ( fd_in != -1 && f_out != NULL ) {
+ if(read(fd_in, &buf, sizeof(buf))) {
+ fprintf(f_out, buf,system_page_size);
+ fclose(f_out);
+ close(fd_in);
+ DO_TEST("hugepages-pages6", NONE);
+ }
+ }
+
DO_TEST("nosharepages", QEMU_CAPS_MACHINE_OPT, QEMU_CAPS_MEM_MERGE);
DO_TEST("disk-cdrom", NONE);
DO_TEST("disk-cdrom-network-http", QEMU_CAPS_KVM, QEMU_CAPS_DEVICE,
--
1.9.3
--
Prerna Saxena
Linux Technology Centre,
IBM Systems and Technology Lab,
Bangalore, India
10 years, 1 month
- 3
- 2