mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 15:25:02 +07:00
aae4a3d811
It is possible whilst allocating the page-directory tree for a ppgtt bind that the shrinker may run and reap unused parts of the tree. If the shrinker happens to remove a chunk of the tree that the allocate_va_range has already processed, we may then try to insert into the dangling tree. This test uses the fault-injection framework to force the shrinker to be invoked before we allocate new pages, i.e. new chunks of the PD tree. References: https://bugs.freedesktop.org/show_bug.cgi?id=99295 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Matthew Auld <matthew.auld@intel.com>
107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/*
|
|
* Copyright © 2016 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef __I915_SELFTEST_H__
|
|
#define __I915_SELFTEST_H__
|
|
|
|
struct pci_dev;
|
|
struct drm_i915_private;
|
|
|
|
struct i915_selftest {
|
|
unsigned long timeout_jiffies;
|
|
unsigned int timeout_ms;
|
|
unsigned int random_seed;
|
|
int mock;
|
|
int live;
|
|
};
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
|
|
#include <linux/fault-inject.h>
|
|
|
|
extern struct i915_selftest i915_selftest;
|
|
|
|
int i915_mock_selftests(void);
|
|
int i915_live_selftests(struct pci_dev *pdev);
|
|
|
|
/* We extract the function declarations from i915_mock_selftests.h and
|
|
* i915_live_selftests.h Add your unit test declarations there!
|
|
*
|
|
* Mock unit tests are run very early upon module load, before the driver
|
|
* is probed. All hardware interactions, as well as other subsystems, must
|
|
* be "mocked".
|
|
*
|
|
* Live unit tests are run after the driver is loaded - all hardware
|
|
* interactions are real.
|
|
*/
|
|
#define selftest(name, func) int func(void);
|
|
#include "selftests/i915_mock_selftests.h"
|
|
#undef selftest
|
|
#define selftest(name, func) int func(struct drm_i915_private *i915);
|
|
#include "selftests/i915_live_selftests.h"
|
|
#undef selftest
|
|
|
|
struct i915_subtest {
|
|
int (*func)(void *data);
|
|
const char *name;
|
|
};
|
|
|
|
int __i915_subtests(const char *caller,
|
|
const struct i915_subtest *st,
|
|
unsigned int count,
|
|
void *data);
|
|
#define i915_subtests(T, data) \
|
|
__i915_subtests(__func__, T, ARRAY_SIZE(T), data)
|
|
|
|
#define SUBTEST(x) { x, #x }
|
|
|
|
#define I915_SELFTEST_DECLARE(x) x
|
|
#define I915_SELFTEST_ONLY(x) unlikely(x)
|
|
|
|
#else /* !IS_ENABLED(CONFIG_DRM_I915_SELFTEST) */
|
|
|
|
static inline int i915_mock_selftests(void) { return 0; }
|
|
static inline int i915_live_selftests(struct pci_dev *pdev) { return 0; }
|
|
|
|
#define I915_SELFTEST_DECLARE(x)
|
|
#define I915_SELFTEST_ONLY(x) 0
|
|
|
|
#endif
|
|
|
|
/* Using the i915_selftest_ prefix becomes a little unwieldy with the helpers.
|
|
* Instead we use the igt_ shorthand, in reference to the intel-gpu-tools
|
|
* suite of uabi test cases (which includes a test runner for our selftests).
|
|
*/
|
|
|
|
#define IGT_TIMEOUT(name__) \
|
|
unsigned long name__ = jiffies + i915_selftest.timeout_jiffies
|
|
|
|
__printf(2, 3)
|
|
bool __igt_timeout(unsigned long timeout, const char *fmt, ...);
|
|
|
|
#define igt_timeout(t, fmt, ...) \
|
|
__igt_timeout((t), KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
|
|
|
|
#define igt_can_mi_store_dword_imm(D) (INTEL_GEN(D) > 2)
|
|
|
|
#endif /* !__I915_SELFTEST_H__ */
|