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Add NULL guard in zfs_zrlock_class event class 

The owner field could be NULL in some cases, so add a guard.  Shorten
__entry field names to fit assignment statements in 80 columns.

Signed-off-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Fixes #3220
This commit is contained in:
Ned Bass 2015-03-24 17:22:21 -07:00 committed by Brian Behlendorf
parent ee2ca1db28
commit 95a6990d9a
1 changed files with 9 additions and 9 deletions
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16
include/sys/trace_zrlock.h
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@ -42,28 +42,28 @@ DECLARE_EVENT_CLASS(zfs_zrlock_class,
TP_PROTO(zrlock_t *zrl, uint32_t n),
TP_ARGS(zrl, n),
TP_STRUCT__entry(
__field(int32_t, zr_refcount)
__field(int32_t, refcount)
#ifdef ZFS_DEBUG
__field(pid_t, zr_owner_pid)
__field(const char *, zr_caller)
__field(pid_t, owner_pid)
__field(const char *, caller)
#endif
__field(uint32_t, n)
),
TP_fast_assign(
__entry->zr_refcount = zrl->zr_refcount;
__entry->refcount = zrl->zr_refcount;
#ifdef ZFS_DEBUG
__entry->zr_owner_pid = zrl->zr_owner->pid;
__entry->zr_caller = zrl->zr_caller;
__entry->owner_pid = zrl->zr_owner ? zrl->zr_owner->pid : 0;
__entry->caller = zrl->zr_caller;
#endif
__entry->n = n;
),
#ifdef ZFS_DEBUG
TP_printk("zrl { refcount %d owner_pid %d caller %s } n %u",
__entry->zr_refcount, __entry->zr_owner_pid, __entry->zr_caller,
__entry->refcount, __entry->owner_pid, __entry->caller,
__entry->n)
#else
TP_printk("zrl { refcount %d } n %u",
__entry->zr_refcount, __entry->n)
__entry->refcount, __entry->n)
#endif
);