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| author | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2016-08-11 18:26:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-15 17:41:46 +0300 |
| commit | 35538d7822e86cb38015c21bb708a433f8814af0 (patch) | |
| tree | 36aa2ccfe355aa93ad345715988a36ceba2498ea /drivers/dma-buf/sync_trace.h | |
| parent | fc0c9a03b57efb769a74fa8b33d68d90153b5950 (diff) | |
| download | linux-35538d7822e86cb38015c21bb708a433f8814af0.tar.xz | |
dma-buf/sw_sync: de-stage SW_SYNC
SW_SYNC allows to run tests on the sync_file framework via debugfs on
<debugfs>/sync/sw_sync
Opening and closing the file triggers creation and release of a sync
timeline. To create fences on this timeline the SW_SYNC_IOC_CREATE_FENCE
ioctl should be used. To increment the timeline value use SW_SYNC_IOC_INC.
Also it exports Sync information on
<debugfs>/sync/info
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/dma-buf/sync_trace.h')
| -rw-r--r-- | drivers/dma-buf/sync_trace.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/dma-buf/sync_trace.h b/drivers/dma-buf/sync_trace.h new file mode 100644 index 000000000000..d13d59ff1b85 --- /dev/null +++ b/drivers/dma-buf/sync_trace.h @@ -0,0 +1,32 @@ +#undef TRACE_SYSTEM +#define TRACE_INCLUDE_PATH ../../drivers/dma-buf +#define TRACE_SYSTEM sync_trace + +#if !defined(_TRACE_SYNC_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SYNC_H + +#include "sync_debug.h" +#include <linux/tracepoint.h> + +TRACE_EVENT(sync_timeline, + TP_PROTO(struct sync_timeline *timeline), + + TP_ARGS(timeline), + + TP_STRUCT__entry( + __string(name, timeline->name) + __field(u32, value) + ), + + TP_fast_assign( + __assign_str(name, timeline->name); + __entry->value = timeline->value; + ), + + TP_printk("name=%s value=%d", __get_str(name), __entry->value) +); + +#endif /* if !defined(_TRACE_SYNC_H) || defined(TRACE_HEADER_MULTI_READ) */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |