1 files changed, 0 insertions, 104 deletions
diff --git a/debian/patches-rt/0246-drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch b/debian/patches-rt/0246-drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch
deleted file mode 100644
index 04dcb13d9..000000000
--- a/debian/patches-rt/0246-drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch
+++ /dev/null
@@ -1,104 +0,0 @@
-From cdff10ec863d6d0e7d18beb8cb66adc86674bb2b Mon Sep 17 00:00:00 2001
-From: Mike Galbraith <umgwanakikbuti@gmail.com>
-Date: Thu, 31 Mar 2016 04:08:28 +0200
-Subject: [PATCH 246/347] drivers/block/zram: Replace bit spinlocks with
- rtmutex for -rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
-
-They're nondeterministic, and lead to ___might_sleep() splats in -rt.
-OTOH, they're a lot less wasteful than an rtmutex per page.
-
-Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- drivers/block/zram/zram_drv.c | 38 +++++++++++++++++++++++++++++++++++
- drivers/block/zram/zram_drv.h |  3 +++
- 2 files changed, 41 insertions(+)
-
-diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
-index 5e05bfcecd7b..04e4297f8318 100644
---- a/drivers/block/zram/zram_drv.c
-+++ b/drivers/block/zram/zram_drv.c
-@@ -53,6 +53,40 @@ static size_t huge_class_size;
- 
- static void zram_free_page(struct zram *zram, size_t index);
- 
-+#ifdef CONFIG_PREEMPT_RT_BASE
-+static void zram_meta_init_table_locks(struct zram *zram, size_t num_pages)
-+{
-+	size_t index;
-+
-+	for (index = 0; index < num_pages; index++)
-+		spin_lock_init(&zram->table[index].lock);
-+}
-+
-+static int zram_slot_trylock(struct zram *zram, u32 index)
-+{
-+	int ret;
-+
-+	ret = spin_trylock(&zram->table[index].lock);
-+	if (ret)
-+		__set_bit(ZRAM_LOCK, &zram->table[index].value);
-+	return ret;
-+}
-+
-+static void zram_slot_lock(struct zram *zram, u32 index)
-+{
-+	spin_lock(&zram->table[index].lock);
-+	__set_bit(ZRAM_LOCK, &zram->table[index].value);
-+}
-+
-+static void zram_slot_unlock(struct zram *zram, u32 index)
-+{
-+	__clear_bit(ZRAM_LOCK, &zram->table[index].value);
-+	spin_unlock(&zram->table[index].lock);
-+}
-+
-+#else
-+static void zram_meta_init_table_locks(struct zram *zram, size_t num_pages) { }
-+
- static int zram_slot_trylock(struct zram *zram, u32 index)
- {
- 	return bit_spin_trylock(ZRAM_LOCK, &zram->table[index].value);
-@@ -67,6 +101,7 @@ static void zram_slot_unlock(struct zram *zram, u32 index)
- {
- 	bit_spin_unlock(ZRAM_LOCK, &zram->table[index].value);
- }
-+#endif
- 
- static inline bool init_done(struct zram *zram)
- {
-@@ -902,6 +937,8 @@ static DEVICE_ATTR_RO(io_stat);
- static DEVICE_ATTR_RO(mm_stat);
- static DEVICE_ATTR_RO(debug_stat);
- 
-+
-+
- static void zram_meta_free(struct zram *zram, u64 disksize)
- {
- 	size_t num_pages = disksize >> PAGE_SHIFT;
-@@ -932,6 +969,7 @@ static bool zram_meta_alloc(struct zram *zram, u64 disksize)
- 
- 	if (!huge_class_size)
- 		huge_class_size = zs_huge_class_size(zram->mem_pool);
-+	zram_meta_init_table_locks(zram, num_pages);
- 	return true;
- }
- 
-diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
-index d1095dfdffa8..144e91061df8 100644
---- a/drivers/block/zram/zram_drv.h
-+++ b/drivers/block/zram/zram_drv.h
-@@ -61,6 +61,9 @@ struct zram_table_entry {
- 		unsigned long element;
- 	};
- 	unsigned long value;
-+#ifdef CONFIG_PREEMPT_RT_BASE
-+	spinlock_t lock;
-+#endif
- #ifdef CONFIG_ZRAM_MEMORY_TRACKING
- 	ktime_t ac_time;
- #endif
--- 
-2.36.1
-