Revision 85b144f860176ec18db927d6d9ecdfb24d9c6483 authored by Maarten Lankhorst on 29 November 2012, 11:36:54 UTC, committed by Dave Airlie on 10 December 2012, 10:21:03 UTC
By removing the unlocking of lru and retaking it immediately, a race is removed where the bo is taken off the swap list or the lru list between the unlock and relock. As such the cleanup_refs code can be simplified, it will attempt to call ttm_bo_wait non-blockingly, and if it fails it will drop the locks and perform a blocking wait, or return an error if no_wait_gpu was set. The need for looping is also eliminated, since swapout and evict_mem_first will always follow the destruction path, no new fence is allowed to be attached. As far as I can see this may already have been the case, but the unlocking / relocking required a complicated loop to deal with re-reservation. Changes since v1: - Simplify no_wait_gpu case by folding it in with empty ddestroy. - Hold a reservation while calling ttm_bo_cleanup_memtype_use again. Changes since v2: - Do not remove bo from lru list while waiting Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
1 parent 6ed9ccb
rtmutex.h
/*
* 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_detect_deadlock(w,d) (d)
#define debug_rt_mutex_reset_waiter(w) do { } while (0)
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