diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2017-10-27 19:35:27 -0400 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2017-10-27 19:35:27 -0400 |
| commit | 482f07775cf559c82cb3d086e3c4fad91582e4cb (patch) | |
| tree | 3102aa334ea6bfb9d70594984eb0cd5210161aa8 /drivers/gpu/drm/amd/amdkfd/kfd_events.h | |
| parent | 50cb7dd94cb43a6204813376e1be1d21780b71fb (diff) | |
drm/amdkfd: Simplify event ID and signal slot management
Signal slots are identical to event IDs.
Replace the used_slot_bitmap and events hash table with an IDR to
allocate and lookup event IDs and signal slots more efficiently.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_events.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_events.h | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.h b/drivers/gpu/drm/amd/amdkfd/kfd_events.h index f85fcee4414b..abca5bfebbff 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_events.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.h @@ -31,9 +31,13 @@ #include "kfd_priv.h" #include <uapi/linux/kfd_ioctl.h> -#define KFD_EVENT_ID_NONSIGNAL_MASK 0x80000000U -#define KFD_FIRST_NONSIGNAL_EVENT_ID KFD_EVENT_ID_NONSIGNAL_MASK -#define KFD_LAST_NONSIGNAL_EVENT_ID UINT_MAX +/* + * IDR supports non-negative integer IDs. Small IDs are used for + * signal events to match their signal slot. Use the upper half of the + * ID space for non-signal events. + */ +#define KFD_FIRST_NONSIGNAL_EVENT_ID ((INT_MAX >> 1) + 1) +#define KFD_LAST_NONSIGNAL_EVENT_ID INT_MAX /* * Written into kfd_signal_slot_t to indicate that the event is not signaled. @@ -47,9 +51,6 @@ struct kfd_event_waiter; struct signal_page; struct kfd_event { - /* All events in process, rooted at kfd_process.events. */ - struct hlist_node events; - u32 event_id; bool signaled; @@ -60,7 +61,6 @@ struct kfd_event { wait_queue_head_t wq; /* List of event waiters. */ /* Only for signal events. */ - unsigned int signal_slot_index; uint64_t __user *user_signal_address; /* type specific data */ |