diff options
| author | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2021-06-17 09:30:09 +0300 |
|---|---|---|
| committer | Matthew Auld <matthew.auld@intel.com> | 2021-06-17 16:23:01 +0300 |
| commit | 3b86eb82dc2c9989ca6e53cb597a2a1390c64d12 (patch) | |
| tree | cbeea4f97466c3a00d9f2f54f389d9ead0d84af1 /drivers | |
| parent | 5c43ec5d538a5fa1736d298e63a3f8ac03009eea (diff) | |
| download | linux-3b86eb82dc2c9989ca6e53cb597a2a1390c64d12.tar.xz | |
drm/i915: Introduce a ww transaction helper
Introduce a for_i915_gem_ww(){} utility to help make the code
around a ww transaction more readable.
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210617063018.92802-4-thomas.hellstrom@linux.intel.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_ww.h | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_ww.h b/drivers/gpu/drm/i915/i915_gem_ww.h index f2d8769e4118..f6b1a796667b 100644 --- a/drivers/gpu/drm/i915/i915_gem_ww.h +++ b/drivers/gpu/drm/i915/i915_gem_ww.h @@ -11,11 +11,40 @@ struct i915_gem_ww_ctx { struct ww_acquire_ctx ctx; struct list_head obj_list; struct drm_i915_gem_object *contended; - bool intr; + unsigned short intr; + unsigned short loop; }; void i915_gem_ww_ctx_init(struct i915_gem_ww_ctx *ctx, bool intr); void i915_gem_ww_ctx_fini(struct i915_gem_ww_ctx *ctx); int __must_check i915_gem_ww_ctx_backoff(struct i915_gem_ww_ctx *ctx); void i915_gem_ww_unlock_single(struct drm_i915_gem_object *obj); + +/* Internal functions used by the inlines! Don't use. */ +static inline int __i915_gem_ww_fini(struct i915_gem_ww_ctx *ww, int err) +{ + ww->loop = 0; + if (err == -EDEADLK) { + err = i915_gem_ww_ctx_backoff(ww); + if (!err) + ww->loop = 1; + } + + if (!ww->loop) + i915_gem_ww_ctx_fini(ww); + + return err; +} + +static inline void +__i915_gem_ww_init(struct i915_gem_ww_ctx *ww, bool intr) +{ + i915_gem_ww_ctx_init(ww, intr); + ww->loop = 1; +} + +#define for_i915_gem_ww(_ww, _err, _intr) \ + for (__i915_gem_ww_init(_ww, _intr); (_ww)->loop; \ + _err = __i915_gem_ww_fini(_ww, _err)) + #endif |