diff options
author | Pauli Nieminen <suokkos@gmail.com> | 2009-08-29 12:08:57 +0300 |
---|---|---|
committer | Pauli Nieminen <suokkos@gmail.com> | 2010-03-17 12:42:21 +0200 |
commit | 966c9907c040b4fe4b288b4a9d82598797aee743 (patch) | |
tree | 59a9f29ede30ab039a3a4151d2a9b1a9d30796cc /xf86atomic.h | |
parent | 21105bc186d188f0bfc2f41c52b4b0ceb6742cf5 (diff) |
libdrm_radeon: Optimize cs_gem_reloc to do less looping.
bo->referenced_in_cs is checked if bo is already in cs. Adding and removing
reference in bo is done with atomic operations to allow parallel access to a
bo from multiple contexts.
cs->id generation code quarentees there is not duplicated ids which limits
number of cs->ids to 32. If there is more cs objects rest will get id 0.
V2:
- Fix configure to check for atomics operations if libdrm_radeon is only selected.
- Make atomic operations private to libdrm.
This optimization decreases cs_write_reloc share of torcs profiling from 4.3%
to 2.6%.
Tested-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Diffstat (limited to 'xf86atomic.h')
-rw-r--r-- | xf86atomic.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/xf86atomic.h b/xf86atomic.h index de8e220e..854187a0 100644 --- a/xf86atomic.h +++ b/xf86atomic.h @@ -50,6 +50,8 @@ typedef struct { # define atomic_set(x, val) ((x)->atomic = (val)) # define atomic_inc(x) ((void) __sync_fetch_and_add (&(x)->atomic, 1)) # define atomic_dec_and_test(x) (__sync_fetch_and_add (&(x)->atomic, -1) == 1) +# define atomic_add(x, v) ((void) __sync_add_and_fetch(&(x)->atomic, (v))) +# define atomic_dec(x, v) ((void) __sync_sub_and_fetch(&(x)->atomic, (v))) # define atomic_cmpxchg(x, oldv, newv) __sync_val_compare_and_swap (&(x)->atomic, oldv, newv) #endif @@ -66,6 +68,8 @@ typedef struct { # define atomic_read(x) AO_load_full(&(x)->atomic) # define atomic_set(x, val) AO_store_full(&(x)->atomic, (val)) # define atomic_inc(x) ((void) AO_fetch_and_add1_full(&(x)->atomic)) +# define atomic_add(x, v) ((void) AO_fetch_and_add_full(&(x)->atomic, (v))) +# define atomic_dec(x, v) ((void) AO_fetch_and_add_full(&(x)->atomic, -(v))) # define atomic_dec_and_test(x) (AO_fetch_and_sub1_full(&(x)->atomic) == 1) # define atomic_cmpxchg(x, oldv, newv) AO_compare_and_swap_full(&(x)->atomic, oldv, newv) @@ -82,6 +86,8 @@ typedef struct { uint_t atomic; } atomic_t; # define atomic_set(x, val) ((x)->atomic = (uint_t)(val)) # define atomic_inc(x) (atomic_inc_uint (&(x)->atomic)) # define atomic_dec_and_test(x) (atomic_dec_uint_nv(&(x)->atomic) == 1) +# define atomic_add(x, v) (atomic_add_uint(&(x)->atomic, (v))) +# define atomic_dec(x, v) (atomic_dec_uint(&(x)->atomic, (v))) # define atomic_cmpxchg(x, oldv, newv) atomic_cas_uint (&(x)->atomic, oldv, newv) #endif |