Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/* SPDX-License-Identifier: MIT */
|
|
/*
|
|
* Copyright © 2020 Intel Corporation
|
|
*/
|
|
#ifndef __I915_GEM_WW_H__
|
|
#define __I915_GEM_WW_H__
|
|
|
|
#include <drm/drm_drv.h>
|
|
|
|
struct i915_gem_ww_ctx {
|
|
struct ww_acquire_ctx ctx;
|
|
struct list_head obj_list;
|
|
struct drm_i915_gem_object *contended;
|
|
bool intr;
|
|
};
|
|
|
|
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 function used by the inlines! Don't use. */
|
|
static inline int __i915_gem_ww_fini(struct i915_gem_ww_ctx *ww, int err)
|
|
{
|
|
if (err == -EDEADLK) {
|
|
err = i915_gem_ww_ctx_backoff(ww);
|
|
if (!err)
|
|
err = -EDEADLK;
|
|
}
|
|
|
|
if (err != -EDEADLK)
|
|
i915_gem_ww_ctx_fini(ww);
|
|
|
|
return err;
|
|
}
|
|
|
|
#define for_i915_gem_ww(_ww, _err, _intr) \
|
|
for (i915_gem_ww_ctx_init(_ww, _intr), (_err) = -EDEADLK; \
|
|
(_err) == -EDEADLK; \
|
|
(_err) = __i915_gem_ww_fini(_ww, _err))
|
|
#endif
|