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nodeinfo: Make sysfs_prefix usage more consistent

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Make sure sysfs_prefix, when present, is always the first argument
to a function; don't use a different name to refer to it; check
whether it is NULL, and hence SYSFS_SYSTEM_PATH should be used, only
when using it directly and not just passing it down to another
function; always pass down the same value we've been passed when
calling another function.
This commit is contained in:
Andrea Bolognani 2015-07-14 11:40:13 +02:00 committed by John Ferlan
parent c212e0c779
commit 75f6f54546
3 changed files with 28 additions and 31 deletions
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41
src/nodeinfo.c
View File

@ -415,7 +415,6 @@ virNodeParseNode(const char *sysfs_prefix,
int *threads,
int *offline)
{
const char *prefix = sysfs_prefix ? sysfs_prefix : SYSFS_SYSTEM_PATH;
int ret = -1;
int processors = 0;
DIR *cpudir = NULL;
@ -441,7 +440,7 @@ virNodeParseNode(const char *sysfs_prefix,
goto cleanup;
}
present_cpumap = nodeGetPresentCPUBitmap(prefix);
present_cpumap = nodeGetPresentCPUBitmap(sysfs_prefix);
/* enumerate sockets in the node */
CPU_ZERO(&sock_map);
@ -553,11 +552,12 @@ virNodeParseNode(const char *sysfs_prefix,
return ret;
}
int linuxNodeInfoCPUPopulate(FILE *cpuinfo,
const char *sysfs_dir,
int linuxNodeInfoCPUPopulate(const char *sysfs_prefix,
FILE *cpuinfo,
virArch arch,
virNodeInfoPtr nodeinfo)
{
const char *prefix = sysfs_prefix ? sysfs_prefix : SYSFS_SYSTEM_PATH;
char line[1024];
DIR *nodedir = NULL;
struct dirent *nodedirent = NULL;
@ -652,7 +652,7 @@ int linuxNodeInfoCPUPopulate(FILE *cpuinfo,
/* OK, we've parsed clock speed out of /proc/cpuinfo. Get the
* core, node, socket, thread and topology information from /sys
*/
if (virAsprintf(&sysfs_nodedir, "%s/node", sysfs_dir) < 0)
if (virAsprintf(&sysfs_nodedir, "%s/node", prefix) < 0)
goto cleanup;
if (!(nodedir = opendir(sysfs_nodedir))) {
@ -667,10 +667,10 @@ int linuxNodeInfoCPUPopulate(FILE *cpuinfo,
nodeinfo->nodes++;
if (virAsprintf(&sysfs_cpudir, "%s/node/%s",
sysfs_dir, nodedirent->d_name) < 0)
prefix, nodedirent->d_name) < 0)
goto cleanup;
if ((cpus = virNodeParseNode(sysfs_dir, sysfs_cpudir, arch,
if ((cpus = virNodeParseNode(sysfs_prefix, sysfs_cpudir, arch,
&socks, &cores,
&threads, &offline)) < 0)
goto cleanup;
@ -698,10 +698,10 @@ int linuxNodeInfoCPUPopulate(FILE *cpuinfo,
fallback:
VIR_FREE(sysfs_cpudir);
if (virAsprintf(&sysfs_cpudir, "%s/cpu", sysfs_dir) < 0)
if (virAsprintf(&sysfs_cpudir, "%s/cpu", prefix) < 0)
goto cleanup;
if ((cpus = virNodeParseNode(sysfs_dir, sysfs_cpudir, arch,
if ((cpus = virNodeParseNode(sysfs_prefix, sysfs_cpudir, arch,
&socks, &cores,
&threads, &offline)) < 0)
goto cleanup;
@ -1059,7 +1059,6 @@ int nodeGetInfo(const char *sysfs_prefix ATTRIBUTE_UNUSED,
#ifdef __linux__
{
int ret = -1;
const char *prefix = sysfs_prefix ? sysfs_prefix : SYSFS_SYSTEM_PATH;
FILE *cpuinfo = fopen(CPUINFO_PATH, "r");
if (!cpuinfo) {
@ -1068,7 +1067,7 @@ int nodeGetInfo(const char *sysfs_prefix ATTRIBUTE_UNUSED,
return -1;
}
ret = linuxNodeInfoCPUPopulate(cpuinfo, prefix,
ret = linuxNodeInfoCPUPopulate(sysfs_prefix, cpuinfo,
hostarch, nodeinfo);
if (ret < 0)
goto cleanup;
@ -1225,7 +1224,7 @@ nodeGetCPUCount(const char *sysfs_prefix ATTRIBUTE_UNUSED)
char *cpupath = NULL;
int ncpu = -1;
if (!(present_path = linuxGetCPUPresentPath(prefix)))
if (!(present_path = linuxGetCPUPresentPath(sysfs_prefix)))
return -1;
if (virFileExists(present_path)) {
@ -1273,13 +1272,12 @@ nodeGetPresentCPUBitmap(const char *sysfs_prefix)
char *present_path = NULL;
virBitmapPtr bitmap = NULL;
#endif
const char *prefix = sysfs_prefix ? sysfs_prefix : SYSFS_SYSTEM_PATH;
if ((max_present = nodeGetCPUCount(prefix)) < 0)
if ((max_present = nodeGetCPUCount(sysfs_prefix)) < 0)
return NULL;
#ifdef __linux__
if (!(present_path = linuxGetCPUPresentPath(prefix)))
if (!(present_path = linuxGetCPUPresentPath(sysfs_prefix)))
return NULL;
if (virFileExists(present_path))
bitmap = linuxParseCPUmap(max_present, present_path);
@ -1301,7 +1299,7 @@ nodeGetCPUBitmap(const char *sysfs_prefix ATTRIBUTE_UNUSED,
virBitmapPtr cpumap;
int present;
present = nodeGetCPUCount(prefix);
present = nodeGetCPUCount(sysfs_prefix);
if (present < 0)
return NULL;
@ -1646,7 +1644,6 @@ nodeGetCPUMap(const char *sysfs_prefix,
unsigned int *online,
unsigned int flags)
{
const char *prefix = sysfs_prefix ? sysfs_prefix : SYSFS_SYSTEM_PATH;
virBitmapPtr cpus = NULL;
int maxpresent;
int ret = -1;
@ -1655,9 +1652,9 @@ nodeGetCPUMap(const char *sysfs_prefix,
virCheckFlags(0, -1);
if (!cpumap && !online)
return nodeGetCPUCount(prefix);
return nodeGetCPUCount(sysfs_prefix);
if (!(cpus = nodeGetCPUBitmap(prefix, &maxpresent)))
if (!(cpus = nodeGetCPUBitmap(sysfs_prefix, &maxpresent)))
goto cleanup;
if (cpumap && virBitmapToData(cpus, cpumap, &dummy) < 0)
@ -1674,7 +1671,7 @@ nodeGetCPUMap(const char *sysfs_prefix,
}
static int
nodeCapsInitNUMAFake(const char *prefix,
nodeCapsInitNUMAFake(const char *sysfs_prefix,
const char *cpupath ATTRIBUTE_UNUSED,
virCapsPtr caps ATTRIBUTE_UNUSED)
{
@ -1685,7 +1682,7 @@ nodeCapsInitNUMAFake(const char *prefix,
int id, cid;
int onlinecpus ATTRIBUTE_UNUSED;
if (nodeGetInfo(prefix, &nodeinfo) < 0)
if (nodeGetInfo(sysfs_prefix, &nodeinfo) < 0)
return -1;
ncpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
@ -1957,7 +1954,7 @@ nodeCapsInitNUMA(const char *sysfs_prefix,
return -1;
if (!virNumaIsAvailable()) {
ret = nodeCapsInitNUMAFake(prefix, cpupath, caps);
ret = nodeCapsInitNUMAFake(sysfs_prefix, cpupath, caps);
goto cleanup;
}

4
src/nodeinfopriv.h
View File

@ -25,8 +25,8 @@
# include "nodeinfo.h"
# ifdef __linux__
int linuxNodeInfoCPUPopulate(FILE *cpuinfo,
const char *sysfs_dir,
int linuxNodeInfoCPUPopulate(const char *sysfs_prefix,
FILE *cpuinfo,
virArch arch,
virNodeInfoPtr nodeinfo);

14
tests/nodeinfotest.c
View File

@ -24,8 +24,8 @@ main(void)
#else
static int
linuxTestCompareFiles(const char *cpuinfofile,
char *sysfs_dir,
linuxTestCompareFiles(char *sysfs_prefix,
const char *cpuinfofile,
virArch arch,
const char *outputfile)
{
@ -42,7 +42,7 @@ linuxTestCompareFiles(const char *cpuinfofile,
}
memset(&nodeinfo, 0, sizeof(nodeinfo));
if (linuxNodeInfoCPUPopulate(cpuinfo, sysfs_dir, arch, &nodeinfo) < 0) {
if (linuxNodeInfoCPUPopulate(sysfs_prefix, cpuinfo, arch, &nodeinfo) < 0) {
if (virTestGetDebug()) {
virErrorPtr error = virSaveLastError();
if (error && error->code != VIR_ERR_OK)
@ -163,12 +163,12 @@ linuxTestNodeInfo(const void *opaque)
{
int result = -1;
char *cpuinfo = NULL;
char *sysfs_dir = NULL;
char *sysfs_prefix = NULL;
char *output = NULL;
struct linuxTestNodeInfoData *data = (struct linuxTestNodeInfoData *) opaque;
const char *archStr = virArchToString(data->arch);
if (virAsprintf(&sysfs_dir, "%s/nodeinfodata/linux-%s",
if (virAsprintf(&sysfs_prefix, "%s/nodeinfodata/linux-%s",
abs_srcdir, data->testName) < 0 ||
virAsprintf(&cpuinfo, "%s/nodeinfodata/linux-%s-%s.cpuinfo",
abs_srcdir, archStr, data->testName) < 0 ||
@ -177,12 +177,12 @@ linuxTestNodeInfo(const void *opaque)
goto cleanup;
}
result = linuxTestCompareFiles(cpuinfo, sysfs_dir, data->arch, output);
result = linuxTestCompareFiles(sysfs_prefix, cpuinfo, data->arch, output);
cleanup:
VIR_FREE(cpuinfo);
VIR_FREE(output);
VIR_FREE(sysfs_dir);
VIR_FREE(sysfs_prefix);
return result;
}