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locks: plug warnings about unitialized variables

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They only showed up after I redefined LOCKSTAT_ENABLED to 0.

doing_lockprof in mutex.c is a real (but harmless) bug. Should the
value be non-zero it will do checks for lock profiling which would
otherwise be skipped.

state in rwlock.c is a wart from the compiler, the value can't be
used if lock profiling is not enabled.

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Mateusz Guzik 2018-11-13 21:29:56 +00:00
parent d54474e63b
commit f183fb162c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=340410
2 changed files with 4 additions and 4 deletions
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4
sys/kern/kern_mutex.c
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@ -486,7 +486,7 @@ __mtx_lock_sleep(volatile uintptr_t *c, uintptr_t v)
int64_t all_time = 0;
#endif
#if defined(KDTRACE_HOOKS) || defined(LOCK_PROFILING)
int doing_lockprof;
int doing_lockprof = 0;
#endif
td = curthread;
@ -690,7 +690,7 @@ _mtx_lock_spin_cookie(volatile uintptr_t *c, uintptr_t v)
int64_t spin_time = 0;
#endif
#if defined(KDTRACE_HOOKS) || defined(LOCK_PROFILING)
int doing_lockprof;
int doing_lockprof = 0;
#endif
tid = (uintptr_t)curthread;

4
sys/kern/kern_rwlock.c
View file

@ -445,7 +445,7 @@ __rw_rlock_hard(struct rwlock *rw, struct thread *td, uintptr_t v
int64_t all_time = 0;
#endif
#if defined(KDTRACE_HOOKS) || defined(LOCK_PROFILING)
uintptr_t state;
uintptr_t state = 0;
int doing_lockprof = 0;
#endif
@ -913,7 +913,7 @@ __rw_wlock_hard(volatile uintptr_t *c, uintptr_t v LOCK_FILE_LINE_ARG_DEF)
int64_t all_time = 0;
#endif
#if defined(KDTRACE_HOOKS) || defined(LOCK_PROFILING)
uintptr_t state;
uintptr_t state = 0;
int doing_lockprof = 0;
#endif
int extra_work = 0;