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uma: pretty print zone flags sysctl

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Requested by:	jeff
Reviewed by:	jeff, markj
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D22748
This commit is contained in:
Ryan Libby 2019-12-11 06:50:55 +00:00
parent a9365f4a17
commit 6d204a6a0e
2 changed files with 48 additions and 2 deletions
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24
sys/vm/uma_core.c
View file

@ -289,6 +289,7 @@ static int sysctl_vm_zone_count(SYSCTL_HANDLER_ARGS);
static int sysctl_vm_zone_stats(SYSCTL_HANDLER_ARGS);
static int sysctl_handle_uma_zone_allocs(SYSCTL_HANDLER_ARGS);
static int sysctl_handle_uma_zone_frees(SYSCTL_HANDLER_ARGS);
static int sysctl_handle_uma_zone_flags(SYSCTL_HANDLER_ARGS);
#ifdef INVARIANTS
static bool uma_dbg_kskip(uma_keg_t keg, void *mem);
@ -1896,8 +1897,9 @@ zone_alloc_sysctl(uma_zone_t zone, void *unused)
oid = zone->uz_oid;
SYSCTL_ADD_U32(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"size", CTLFLAG_RD, &zone->uz_size, 0, "Allocation size");
SYSCTL_ADD_U32(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"flags", CTLFLAG_RD, &zone->uz_flags, 0,
SYSCTL_ADD_PROC(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"flags", CTLFLAG_RD | CTLTYPE_STRING | CTLFLAG_MPSAFE,
zone, 0, sysctl_handle_uma_zone_flags, "A",
"Allocator configuration flags");
SYSCTL_ADD_U16(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"bucket_size", CTLFLAG_RD, &zone->uz_bucket_size, 0,
@ -4408,6 +4410,24 @@ sysctl_handle_uma_zone_frees(SYSCTL_HANDLER_ARGS)
return (sysctl_handle_64(oidp, &cur, 0, req));
}
static int
sysctl_handle_uma_zone_flags(SYSCTL_HANDLER_ARGS)
{
struct sbuf sbuf;
uma_zone_t zone = arg1;
int error;
sbuf_new_for_sysctl(&sbuf, NULL, 0, req);
if (zone->uz_flags != 0)
sbuf_printf(&sbuf, "0x%b", zone->uz_flags, PRINT_UMA_ZFLAGS);
else
sbuf_printf(&sbuf, "0");
error = sbuf_finish(&sbuf);
sbuf_delete(&sbuf);
return (error);
}
#ifdef INVARIANTS
static uma_slab_t
uma_dbg_getslab(uma_zone_t zone, void *item)

26
sys/vm/uma_int.h
View file

@ -420,6 +420,32 @@ struct uma_zone {
#define UMA_ZFLAG_INHERIT \
(UMA_ZFLAG_INTERNAL | UMA_ZFLAG_CACHEONLY | UMA_ZFLAG_BUCKET)
#define PRINT_UMA_ZFLAGS "\20" \
"\40CACHEONLY" \
"\37TRASH" \
"\36INTERNAL" \
"\35BUCKET" \
"\34RECLAIMING" \
"\33CACHE" \
"\22MINBUCKET" \
"\21NUMA" \
"\20PCPU" \
"\17NODUMP" \
"\16VTOSLAB" \
"\15CACHESPREAD" \
"\14MAXBUCKET" \
"\13NOBUCKET" \
"\12SECONDARY" \
"\11HASH" \
"\10VM" \
"\7MTXCLASS" \
"\6NOFREE" \
"\5MALLOC" \
"\4OFFPAGE" \
"\3STATIC" \
"\2ZINIT" \
"\1PAGEABLE"
#undef UMA_ALIGN
#ifdef _KERNEL