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lockstat:::thread-spin should only fire after spinning for the lock.

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MFC after:	1 week
This commit is contained in:
Mark Johnston 2016-05-18 03:21:21 +00:00
parent 008024f2b8
commit 156fbc14a0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=300103
1 changed files with 2 additions and 1 deletions
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3
sys/kern/kern_mutex.c
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@ -714,7 +714,8 @@ thread_lock_flags_(struct thread *td, int opts, const char *file, int line)
LOCK_LOG_LOCK("LOCK", &m->lock_object, opts, m->mtx_recurse, file,
line);
WITNESS_LOCK(&m->lock_object, opts | LOP_EXCLUSIVE, file, line);
LOCKSTAT_RECORD1(thread__spin, m, spin_time);
if (spin_time != 0)
LOCKSTAT_RECORD1(thread__spin, m, spin_time);
}
struct mtx *