[libvirt] [PATCH v2] sysinfo: Fix reports on ARM

[Michal Privoznik]

Due to a kernel commit (b4b8f770e), cpuinfo format has changed on
ARMs. Firstly, 'Processor: ...' may not be reported, it's
replaced by 'model name: ...'. Secondly, the "Processor" string
may occur in CPU name, e.g. 'ARMv7 Processor rev 5 (v7l)'.
Therefore, we must firstly look for 'model name' and then for
'Processor' if not found.
Moreover, lines in the cpuinfo file are shuffled, so we better
not manipulate the pointer to start of internal buffer as we may
lost some info.

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---

diff to v1:
- Jan's comments worked in
- added new test case (yes, there really is a space at EOL in cpuinfo on my ARM)

 src/util/virsysinfo.c                    |  9 +++----
 tests/sysinfodata/arm-rpi2cpuinfo.data   | 43 ++++++++++++++++++++++++++++++++
 tests/sysinfodata/arm-rpi2sysinfo.expect | 18 +++++++++++++
 tests/sysinfotest.c                      | 22 ++++++++++++----
 4 files changed, 82 insertions(+), 10 deletions(-)
 create mode 100644 tests/sysinfodata/arm-rpi2cpuinfo.data
 create mode 100644 tests/sysinfodata/arm-rpi2sysinfo.expect

diff --git a/src/util/virsysinfo.c b/src/util/virsysinfo.c
index 8bb17f0..40390ab 100644
--- a/src/util/virsysinfo.c
+++ b/src/util/virsysinfo.c
@@ -289,16 +289,15 @@ virSysinfoParseProcessor(const char *base, virSysinfoDefPtr ret)
     virSysinfoProcessorDefPtr processor;
     char *processor_type = NULL;
 
-    if (!(tmp_base = strstr(base, "Processor")))
+    if (!(tmp_base = strstr(base, "model name")) &&
+        !(tmp_base = strstr(base, "Processor")))
         return 0;
 
-    base = tmp_base;
-    eol = strchr(base, '\n');
-    cur = strchr(base, ':') + 1;
+    eol = strchr(tmp_base, '\n');
+    cur = strchr(tmp_base, ':') + 1;
     virSkipSpaces(&cur);
     if (eol && VIR_STRNDUP(processor_type, cur, eol - cur) < 0)
         goto error;
-    base = cur;
 
     while ((tmp_base = strstr(base, "processor")) != NULL) {
         base = tmp_base;
diff --git a/tests/sysinfodata/arm-rpi2cpuinfo.data b/tests/sysinfodata/arm-rpi2cpuinfo.data
new file mode 100644
index 0000000..41fde00
--- /dev/null
+++ b/tests/sysinfodata/arm-rpi2cpuinfo.data
@@ -0,0 +1,43 @@
+processor       : 0
+model name      : ARMv7 Processor rev 5 (v7l)
+BogoMIPS        : 38.40
+Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm 
+CPU implementer : 0x41
+CPU architecture: 7
+CPU variant     : 0x0
+CPU part        : 0xc07
+CPU revision    : 5
+
+processor       : 1
+model name      : ARMv7 Processor rev 5 (v7l)
+BogoMIPS        : 38.40
+Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm 
+CPU implementer : 0x41
+CPU architecture: 7
+CPU variant     : 0x0
+CPU part        : 0xc07
+CPU revision    : 5
+
+processor       : 2
+model name      : ARMv7 Processor rev 5 (v7l)
+BogoMIPS        : 38.40
+Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm 
+CPU implementer : 0x41
+CPU architecture: 7
+CPU variant     : 0x0
+CPU part        : 0xc07
+CPU revision    : 5
+
+processor       : 3
+model name      : ARMv7 Processor rev 5 (v7l)
+BogoMIPS        : 38.40
+Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm 
+CPU implementer : 0x41
+CPU architecture: 7
+CPU variant     : 0x0
+CPU part        : 0xc07
+CPU revision    : 5
+
+Hardware        : BCM2709
+Revision        : a01041
+Serial          : 00000000c9e9323d
diff --git a/tests/sysinfodata/arm-rpi2sysinfo.expect b/tests/sysinfodata/arm-rpi2sysinfo.expect
new file mode 100644
index 0000000..acb3ad9
--- /dev/null
+++ b/tests/sysinfodata/arm-rpi2sysinfo.expect
@@ -0,0 +1,18 @@
+<sysinfo type='smbios'>
+  <processor>
+    <entry name='socket_destination'>0</entry>
+    <entry name='type'>ARMv7 Processor rev 5 (v7l)</entry>
+  </processor>
+  <processor>
+    <entry name='socket_destination'>1</entry>
+    <entry name='type'>ARMv7 Processor rev 5 (v7l)</entry>
+  </processor>
+  <processor>
+    <entry name='socket_destination'>2</entry>
+    <entry name='type'>ARMv7 Processor rev 5 (v7l)</entry>
+  </processor>
+  <processor>
+    <entry name='socket_destination'>3</entry>
+    <entry name='type'>ARMv7 Processor rev 5 (v7l)</entry>
+  </processor>
+</sysinfo>
diff --git a/tests/sysinfotest.c b/tests/sysinfotest.c
index d8266a7..74e5f71 100644
--- a/tests/sysinfotest.c
+++ b/tests/sysinfotest.c
@@ -166,11 +166,23 @@ VIRT_TEST_MAIN(test_x86)
 static int
 test_arm(void)
 {
-    return sysinfotest_run("arm sysinfo",
-                           NULL,
-                           NULL,
-                           "/sysinfodata/armcpuinfo.data",
-                           "/sysinfodata/armsysinfo.expect");
+    int ret = EXIT_SUCCESS;
+
+    if (sysinfotest_run("arm sysinfo",
+                        NULL,
+                        NULL,
+                        "/sysinfodata/armcpuinfo.data",
+                        "/sysinfodata/armsysinfo.expect") != EXIT_SUCCESS)
+        ret = EXIT_FAILURE;
+
+    if (sysinfotest_run("Raspberry Pi 2 sysinfo",
+                        NULL,
+                        NULL,
+                        "/sysinfodata/arm-rpi2cpuinfo.data",
+                        "/sysinfodata/arm-rpi2sysinfo.expect") != EXIT_SUCCESS)
+        ret = EXIT_FAILURE;
+
+    return ret;
 }
 
 VIRT_TEST_MAIN(test_arm)
-- 
2.3.6