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perf namespaces: Introduce nsinfo__refcnt() accessor to avoid accessing ->refcnt directly 

To reduces the use of RC_CHK_ACCESS(nsi).

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2023-04-17 22:11:58 -03:00
parent 4d623903f1
commit f94c21dfd0
1 changed files with 8 additions and 4 deletions
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12
tools/perf/util/namespaces.c
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@ -204,11 +204,15 @@ struct nsinfo *nsinfo__copy(const struct nsinfo *nsi)
return nnsi;
}
static refcount_t *nsinfo__refcnt(struct nsinfo *nsi)
{
return &RC_CHK_ACCESS(nsi)->refcnt;
}
static void nsinfo__delete(struct nsinfo *nsi)
{
if (nsi) {
WARN_ONCE(refcount_read(&RC_CHK_ACCESS(nsi)->refcnt) != 0,
"nsinfo refcnt unbalanced\n");
WARN_ONCE(refcount_read(nsinfo__refcnt(nsi)) != 0, "nsinfo refcnt unbalanced\n");
zfree(&RC_CHK_ACCESS(nsi)->mntns_path);
RC_CHK_FREE(nsi);
}
@ -219,14 +223,14 @@ struct nsinfo *nsinfo__get(struct nsinfo *nsi)
struct nsinfo *result;
if (RC_CHK_GET(result, nsi))
refcount_inc(&RC_CHK_ACCESS(nsi)->refcnt);
refcount_inc(nsinfo__refcnt(nsi));
return result;
}
void nsinfo__put(struct nsinfo *nsi)
{
if (nsi && refcount_dec_and_test(&RC_CHK_ACCESS(nsi)->refcnt))
if (nsi && refcount_dec_and_test(nsinfo__refcnt(nsi)))
nsinfo__delete(nsi);
else
RC_CHK_PUT(nsi);