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Use if ... else when printing memory attributes

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In vmstat there is a switch statement that converts these attributes to
a string. As some values can be duplicate we have to hide these from
userspace.

Replace this switch statement with an if ... else macro that lets us
repeat values without a compiler error.

Reviewed by:	kib
MFC after:	2 weeks
Sponsored by:	ABT Systems Ltd
Differential Revision:	https://reviews.freebsd.org/D29703

(cherry picked from commit 15221c552b)
This commit is contained in:
Andrew Turner 2021-04-11 09:00:00 +00:00
parent 2c89a8c9aa
commit a0dd2317e8
1 changed files with 18 additions and 36 deletions
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54
usr.bin/vmstat/vmstat.c
View file

@ -1538,66 +1538,48 @@ display_object(struct kinfo_vmobject *kvo)
xo_emit("{:inactive/%5ju} ", (uintmax_t)kvo->kvo_inactive);
xo_emit("{:refcount/%3d} ", kvo->kvo_ref_count);
xo_emit("{:shadowcount/%3d} ", kvo->kvo_shadow_count);
switch (kvo->kvo_memattr) {
#define MEMATTR_STR(type, val) \
if (kvo->kvo_memattr == (type)) { \
str = (val); \
} else
#ifdef VM_MEMATTR_UNCACHEABLE
case VM_MEMATTR_UNCACHEABLE:
str = "UC";
break;
MEMATTR_STR(VM_MEMATTR_UNCACHEABLE, "UC")
#endif
#ifdef VM_MEMATTR_WRITE_COMBINING
case VM_MEMATTR_WRITE_COMBINING:
str = "WC";
break;
MEMATTR_STR(VM_MEMATTR_WRITE_COMBINING, "WC")
#endif
#ifdef VM_MEMATTR_WRITE_THROUGH
case VM_MEMATTR_WRITE_THROUGH:
str = "WT";
break;
MEMATTR_STR(VM_MEMATTR_WRITE_THROUGH, "WT")
#endif
#ifdef VM_MEMATTR_WRITE_PROTECTED
case VM_MEMATTR_WRITE_PROTECTED:
str = "WP";
break;
MEMATTR_STR(VM_MEMATTR_WRITE_PROTECTED, "WP")
#endif
#ifdef VM_MEMATTR_WRITE_BACK
case VM_MEMATTR_WRITE_BACK:
str = "WB";
break;
MEMATTR_STR(VM_MEMATTR_WRITE_BACK, "WB")
#endif
#ifdef VM_MEMATTR_WEAK_UNCACHEABLE
case VM_MEMATTR_WEAK_UNCACHEABLE:
str = "UC-";
break;
MEMATTR_STR(VM_MEMATTR_WEAK_UNCACHEABLE, "UC-")
#endif
#ifdef VM_MEMATTR_WB_WA
case VM_MEMATTR_WB_WA:
str = "WB";
break;
MEMATTR_STR(VM_MEMATTR_WB_WA, "WB")
#endif
#ifdef VM_MEMATTR_NOCACHE
case VM_MEMATTR_NOCACHE:
str = "NC";
break;
MEMATTR_STR(VM_MEMATTR_NOCACHE, "NC")
#endif
#ifdef VM_MEMATTR_DEVICE
case VM_MEMATTR_DEVICE:
str = "DEV";
break;
MEMATTR_STR(VM_MEMATTR_DEVICE, "DEV")
#endif
#ifdef VM_MEMATTR_CACHEABLE
case VM_MEMATTR_CACHEABLE:
str = "C";
break;
MEMATTR_STR(VM_MEMATTR_CACHEABLE, "C")
#endif
#ifdef VM_MEMATTR_PREFETCHABLE
case VM_MEMATTR_PREFETCHABLE:
str = "PRE";
break;
MEMATTR_STR(VM_MEMATTR_PREFETCHABLE, "PRE")
#endif
default:
{
str = "??";
break;
}
#undef MEMATTR_STR
xo_emit("{:attribute/%-3s} ", str);
switch (kvo->kvo_type) {
case KVME_TYPE_NONE: