mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-30 13:38:40 +00:00
8930ed80f9
The conditions under which deadlock detection is conducted are unclear and undocumented. Add constants instead of using 0/1 and provide a selection function which hides the additional debug dependency from the calling code. Add comments where needed. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Link: http://lkml.kernel.org/r/20140522031949.947264874@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
/*
|
|
* RT-Mutexes: blocking mutual exclusion locks with PI support
|
|
*
|
|
* started by Ingo Molnar and Thomas Gleixner:
|
|
*
|
|
* Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
|
|
* Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>
|
|
*
|
|
* This file contains macros used solely by rtmutex.c.
|
|
* Non-debug version.
|
|
*/
|
|
|
|
#define rt_mutex_deadlock_check(l) (0)
|
|
#define rt_mutex_deadlock_account_lock(m, t) do { } while (0)
|
|
#define rt_mutex_deadlock_account_unlock(l) do { } while (0)
|
|
#define debug_rt_mutex_init_waiter(w) do { } while (0)
|
|
#define debug_rt_mutex_free_waiter(w) do { } while (0)
|
|
#define debug_rt_mutex_lock(l) do { } while (0)
|
|
#define debug_rt_mutex_proxy_lock(l,p) do { } while (0)
|
|
#define debug_rt_mutex_proxy_unlock(l) do { } while (0)
|
|
#define debug_rt_mutex_unlock(l) do { } while (0)
|
|
#define debug_rt_mutex_init(m, n) do { } while (0)
|
|
#define debug_rt_mutex_deadlock(d, a ,l) do { } while (0)
|
|
#define debug_rt_mutex_print_deadlock(w) do { } while (0)
|
|
#define debug_rt_mutex_reset_waiter(w) do { } while (0)
|
|
|
|
static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
|
|
{
|
|
WARN(1, "rtmutex deadlock detected\n");
|
|
}
|
|
|
|
static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *w,
|
|
enum rtmutex_chainwalk walk)
|
|
{
|
|
return walk == RT_MUTEX_FULL_CHAINWALK;
|
|
}
|