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locking/lockdep: Remove cross-release leftovers

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There's two cross-release leftover facilities:

 - the crossrelease_hist_*() irq-tracing callbacks (NOPs currently)
 - the complete_release_commit() callback (NOP as well)

Remove them.

Cc: David Sterba <dsterba@suse.com>
Cc: Byungchul Park <byungchul.park@lge.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2018-01-08 17:27:19 +01:00
parent dba04eb76d
commit 527187d285
4 changed files with 0 additions and 12 deletions
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1
include/linux/completion.h
View file

@ -32,7 +32,6 @@ struct completion {
#define init_completion(x) __init_completion(x)
static inline void complete_acquire(struct completion *x) {}
static inline void complete_release(struct completion *x) {}
static inline void complete_release_commit(struct completion *x) {}
#define COMPLETION_INITIALIZER(work) \
{ 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) }

4
include/linux/irqflags.h
View file

@ -27,22 +27,18 @@
# define trace_hardirq_enter() \
do { \
current->hardirq_context++; \
crossrelease_hist_start(XHLOCK_HARD); \
} while (0)
# define trace_hardirq_exit() \
do { \
current->hardirq_context--; \
crossrelease_hist_end(XHLOCK_HARD); \
} while (0)
# define lockdep_softirq_enter() \
do { \
current->softirq_context++; \
crossrelease_hist_start(XHLOCK_SOFT); \
} while (0)
# define lockdep_softirq_exit() \
do { \
current->softirq_context--; \
crossrelease_hist_end(XHLOCK_SOFT); \
} while (0)
# define INIT_TRACE_IRQFLAGS .softirqs_enabled = 1,
#else

2
include/linux/lockdep.h
View file

@ -475,8 +475,6 @@ enum xhlock_context_t {
#define STATIC_LOCKDEP_MAP_INIT(_name, _key) \
{ .name = (_name), .key = (void *)(_key), }
static inline void crossrelease_hist_start(enum xhlock_context_t c) {}
static inline void crossrelease_hist_end(enum xhlock_context_t c) {}
static inline void lockdep_invariant_state(bool force) {}
static inline void lockdep_init_task(struct task_struct *task) {}
static inline void lockdep_free_task(struct task_struct *task) {}

5
kernel/sched/completion.c
View file

@ -34,11 +34,6 @@ void complete(struct completion *x)
spin_lock_irqsave(&x->wait.lock, flags);
/*
* Perform commit of crossrelease here.
*/
complete_release_commit(x);
if (x->done != UINT_MAX)
x->done++;
__wake_up_locked(&x->wait, TASK_NORMAL, 1);