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| author | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2017-09-18 14:42:41 +0300 |
|---|---|---|
| committer | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2017-09-18 16:46:21 +0300 |
| commit | ee427e259567bc9ba817ddfa5abaf7033f5603e9 (patch) | |
| tree | 9e19c97aac4819086b780fc243404c799a687e71 /include/uapi/drm | |
| parent | a529a1c9db931a5d4fd6683199d73a8363bc7e83 (diff) | |
| download | linux-ee427e259567bc9ba817ddfa5abaf7033f5603e9.tar.xz | |
uapi/drm/i915: document field usage of drm_i915_perf_oa_config
Document the expected length of buffers config pointers (tuple of u32
values).
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170918114241.30105-1-lionel.g.landwerlin@intel.com
Diffstat (limited to 'include/uapi/drm')
| -rw-r--r-- | include/uapi/drm/i915_drm.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index b4505d55990d..fe25a01c81f2 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -1511,6 +1511,11 @@ struct drm_i915_perf_oa_config { __u32 n_boolean_regs; __u32 n_flex_regs; + /* + * These fields are pointers to tuples of u32 values (register + * address, value). For example the expected length of the buffer + * pointed by mux_regs_ptr is (2 * sizeof(u32) * n_mux_regs). + */ __u64 mux_regs_ptr; __u64 boolean_regs_ptr; __u64 flex_regs_ptr; |