Update Linux kernel release to v7.2.8-2 for base and BORE kernels

Signed-off-by: Krzysztof Wilczyński <kwilczynski@omarchy.org>

pkgbuilds/linux-omarchy/8213-xe-hibernation-writeback-gated.patch

@@ -0,0 +1,112 @@
+diff --git a/drivers/gpu/drm/xe/xe_defaults.h b/drivers/gpu/drm/xe/xe_defaults.h
+--- a/drivers/gpu/drm/xe/xe_defaults.h
++++ b/drivers/gpu/drm/xe/xe_defaults.h
+@@ -24,5 +24,6 @@
+ #define XE_DEFAULT_SVM_NOTIFIER_SIZE		512
+ #define XE_DEFAULT_SHRINK_ACTIVE_MS		1000
+ #define XE_DEFAULT_SHRINK_DIRECT_BACKUP		false
++#define XE_DEFAULT_HIBERNATE_WRITEBACK		false
+ 
+ #endif
+diff --git a/drivers/gpu/drm/xe/xe_module.c b/drivers/gpu/drm/xe/xe_module.c
+--- a/drivers/gpu/drm/xe/xe_module.c
++++ b/drivers/gpu/drm/xe/xe_module.c
+@@ -32,6 +32,7 @@ struct xe_modparam xe_modparam = {
+ 	.svm_notifier_size =	XE_DEFAULT_SVM_NOTIFIER_SIZE,
+ 	.shrink_active_ms =	XE_DEFAULT_SHRINK_ACTIVE_MS,
+ 	.shrink_direct_backup =	XE_DEFAULT_SHRINK_DIRECT_BACKUP,
++	.hibernate_writeback =	XE_DEFAULT_HIBERNATE_WRITEBACK,
+ 	/* the rest are 0 by default */
+ };
+ 
+@@ -48,6 +49,10 @@ module_param_named(shrink_direct_backup, xe_modparam.shrink_direct_backup, bool,
+ MODULE_PARM_DESC(shrink_direct_backup, "Back up buffer objects in direct reclaim too, not only in kswapd "
+ 		 "[default=" __stringify(XE_DEFAULT_SHRINK_DIRECT_BACKUP) "]");
+ 
++module_param_named(hibernate_writeback, xe_modparam.hibernate_writeback, bool, 0600);
++MODULE_PARM_DESC(hibernate_writeback, "Write buffer objects to swap before hibernation, "
++		 "integrated GPUs only [default=" __stringify(XE_DEFAULT_HIBERNATE_WRITEBACK) "]");
++
+ module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444);
+ MODULE_PARM_DESC(force_execlist, "Force Execlist submission");
+ 
+diff --git a/drivers/gpu/drm/xe/xe_module.h b/drivers/gpu/drm/xe/xe_module.h
+--- a/drivers/gpu/drm/xe/xe_module.h
++++ b/drivers/gpu/drm/xe/xe_module.h
+@@ -27,6 +27,7 @@ struct xe_modparam {
+ 	u32 svm_notifier_size;
+ 	unsigned int shrink_active_ms;
+ 	bool shrink_direct_backup;
++	bool hibernate_writeback;
+ };
+ 
+ extern struct xe_modparam xe_modparam;
+diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c
+--- a/drivers/gpu/drm/xe/xe_pm.c
++++ b/drivers/gpu/drm/xe/xe_pm.c
+@@ -26,6 +26,7 @@
+ #include "xe_pcode.h"
+ #include "xe_printk.h"
+ #include "xe_pxp.h"
++#include "xe_shrinker.h"
+ #include "xe_sriov_vf_ccs.h"
+ #include "xe_sysctrl.h"
+ #include "xe_trace.h"
+@@ -450,6 +451,9 @@ static int xe_pm_notifier_callback(struct notifier_block *nb,
+ 		if (err)
+ 			drm_dbg(&xe->drm, "Notifier evict user failed (%d)\n", err);
+ 
++		if (action == PM_HIBERNATION_PREPARE)
++			xe_shrinker_backup_for_hibernation(xe->mem.shrinker);
++
+ 		err = xe_bo_notifier_prepare_all_pinned(xe);
+ 		if (err)
+ 			drm_dbg(&xe->drm, "Notifier prepare pin failed (%d)\n", err);
+diff --git a/drivers/gpu/drm/xe/xe_shrinker.c b/drivers/gpu/drm/xe/xe_shrinker.c
+--- a/drivers/gpu/drm/xe/xe_shrinker.c
++++ b/drivers/gpu/drm/xe/xe_shrinker.c
+@@ -172,6 +172,34 @@ static int xe_shrinker_walk(struct xe_shrinker *shrinker,
+ 	return ret;
+ }
+ 
++void xe_shrinker_backup_for_hibernation(struct xe_shrinker *shrinker)
++{
++	struct ttm_operation_ctx ctx = {
++		.interruptible = false,
++		.no_wait_gpu = false,
++	};
++	struct xe_bo_shrink_flags flags = {
++		.purge = false,
++		.writeback = true,
++	};
++	unsigned long to_scan, scanned = 0, freed = 0;
++	ktime_t start = ktime_get();
++	int ret;
++
++	if (!READ_ONCE(xe_modparam.hibernate_writeback) || IS_DGFX(shrinker->xe) ||
++	    !ttm_backup_bytes_avail())
++		return;
++
++	read_lock(&shrinker->lock);
++	to_scan = shrinker->shrinkable_pages;
++	read_unlock(&shrinker->lock);
++
++	ret = __xe_shrinker_walk(shrinker, &ctx, flags, to_scan, &scanned, &freed);
++	drm_info(&shrinker->xe->drm,
++		 "Hibernation writeback: %lu of %lu pages scanned, %lu freed in %lld ms (%d)\n",
++		 scanned, to_scan, freed, ktime_ms_delta(ktime_get(), start), ret);
++}
++
+ static inline bool xe_shrinker_can_backup(struct xe_shrinker *shrinker,
+ 					  const struct shrink_control *sc)
+ {
+diff --git a/drivers/gpu/drm/xe/xe_shrinker.h b/drivers/gpu/drm/xe/xe_shrinker.h
+--- a/drivers/gpu/drm/xe/xe_shrinker.h
++++ b/drivers/gpu/drm/xe/xe_shrinker.h
+@@ -13,4 +13,6 @@ void xe_shrinker_mod_pages(struct xe_shrinker *shrinker, long shrinkable, long p
+ 
+ int xe_shrinker_create(struct xe_device *xe);
+ 
++void xe_shrinker_backup_for_hibernation(struct xe_shrinker *shrinker);
++
+ #endif