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util: Remove cbm_mask from virResctrlInfoPerType

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It was used just temporarily to do a calculation, no need to keep that around.
Also use virBitmap in the code instead of reimplementing two of its existing
functions.  And move the counting part next to where the value is read.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Martin Kletzander 2018-02-08 16:02:04 +01:00
parent f1d7625e13
commit 6142758a57
1 changed files with 16 additions and 21 deletions
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37
src/util/virresctrl.c
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@ -24,8 +24,6 @@
#include <fcntl.h>
#include "virresctrlpriv.h"
#include "c-ctype.h"
#include "count-one-bits.h"
#include "viralloc.h"
#include "virfile.h"
#include "virlog.h"
@ -97,7 +95,6 @@ static virClassPtr virResctrlAllocClass;
/* virResctrlInfo */
struct _virResctrlInfoPerType {
/* Kernel-provided information */
char *cbm_mask;
unsigned int min_cbm_bits;
/* Our computed information from the above */
@ -142,11 +139,8 @@ virResctrlInfoDispose(void *obj)
continue;
if (level->types) {
for (j = 0; j < VIR_CACHE_TYPE_LAST; j++) {
if (level->types[j])
VIR_FREE(level->types[j]->cbm_mask);
for (j = 0; j < VIR_CACHE_TYPE_LAST; j++)
VIR_FREE(level->types[j]);
}
}
VIR_FREE(level->types);
VIR_FREE(level);
@ -334,6 +328,7 @@ virResctrlGetInfo(virResctrlInfoPtr resctrl)
int type = 0;
struct dirent *ent = NULL;
unsigned int level = 0;
virBitmapPtr tmp_map = NULL;
virResctrlInfoPerLevelPtr i_level = NULL;
virResctrlInfoPerTypePtr i_type = NULL;
@ -378,7 +373,7 @@ virResctrlGetInfo(virResctrlInfoPtr resctrl)
goto cleanup;
}
rv = virFileReadValueString(&i_type->cbm_mask,
rv = virFileReadValueString(&tmp_str,
SYSFS_RESCTRL_PATH
"/info/%s/cbm_mask",
ent->d_name);
@ -393,7 +388,19 @@ virResctrlGetInfo(virResctrlInfoPtr resctrl)
if (rv < 0)
goto cleanup;
virStringTrimOptionalNewline(i_type->cbm_mask);
virStringTrimOptionalNewline(tmp_str);
tmp_map = virBitmapNewString(tmp_str);
VIR_FREE(tmp_str);
if (!tmp_map) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot parse cbm_mask from resctrl cache info"));
goto cleanup;
}
i_type->bits = virBitmapCountBits(tmp_map);
virBitmapFree(tmp_map);
tmp_map = NULL;
rv = virFileReadValueUint(&i_type->min_cbm_bits,
SYSFS_RESCTRL_PATH "/info/%s/min_cbm_bits",
@ -431,24 +438,12 @@ virResctrlGetInfo(virResctrlInfoPtr resctrl)
goto cleanup;
}
for (tmp_str = i_type->cbm_mask; *tmp_str != '\0'; tmp_str++) {
if (!c_isxdigit(*tmp_str)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot parse cbm_mask from resctrl cache info"));
goto cleanup;
}
i_type->bits += count_one_bits(virHexToBin(*tmp_str));
}
VIR_STEAL_PTR(i_level->types[type], i_type);
}
ret = 0;
cleanup:
VIR_DIR_CLOSE(dirp);
if (i_type)
VIR_FREE(i_type->cbm_mask);
VIR_FREE(i_type);
return ret;
}