diff options
Diffstat (limited to 'poky/meta/recipes-kernel/lttng/lttng-modules/0004-Fix-btrfs_chunk-tracepoints-changed-in-linux-6.8.0-r.patch')
| -rw-r--r-- | poky/meta/recipes-kernel/lttng/lttng-modules/0004-Fix-btrfs_chunk-tracepoints-changed-in-linux-6.8.0-r.patch | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/poky/meta/recipes-kernel/lttng/lttng-modules/0004-Fix-btrfs_chunk-tracepoints-changed-in-linux-6.8.0-r.patch b/poky/meta/recipes-kernel/lttng/lttng-modules/0004-Fix-btrfs_chunk-tracepoints-changed-in-linux-6.8.0-r.patch deleted file mode 100644 index c9b1af37c8..0000000000 --- a/poky/meta/recipes-kernel/lttng/lttng-modules/0004-Fix-btrfs_chunk-tracepoints-changed-in-linux-6.8.0-r.patch +++ /dev/null @@ -1,124 +0,0 @@ -From c8198382fe1cede3e16aae9978642a113a217e4c Mon Sep 17 00:00:00 2001 -From: Kienan Stewart <kstewart@efficios.com> -Date: Mon, 22 Jan 2024 12:17:33 -0500 -Subject: [PATCH 4/5] Fix: btrfs_chunk tracepoints changed in linux 6.8.0-rc1 - -See upstream commit: - - commit 7dc66abb5a47778d7db327783a0ba172b8cff0b5 - Author: Filipe Manana <fdmanana@suse.com> - Date: Tue Nov 21 13:38:38 2023 +0000 - - btrfs: use a dedicated data structure for chunk maps - - Currently we abuse the extent_map structure for two purposes: - - 1) To actually represent extents for inodes; - 2) To represent chunk mappings. - - This is odd and has several disadvantages: - - 1) To create a chunk map, we need to do two memory allocations: one for - an extent_map structure and another one for a map_lookup structure, so - more potential for an allocation failure and more complicated code to - manage and link two structures; - - 2) For a chunk map we actually only use 3 fields (24 bytes) of the - respective extent map structure: the 'start' field to have the logical - start address of the chunk, the 'len' field to have the chunk's size, - and the 'orig_block_len' field to contain the chunk's stripe size. - - Besides wasting a memory, it's also odd and not intuitive at all to - have the stripe size in a field named 'orig_block_len'. - - We are also using 'block_len' of the extent_map structure to contain - the chunk size, so we have 2 fields for the same value, 'len' and - 'block_len', which is pointless; - - 3) When an extent map is associated to a chunk mapping, we set the bit - EXTENT_FLAG_FS_MAPPING on its flags and then make its member named - 'map_lookup' point to the associated map_lookup structure. This means - that for an extent map associated to an inode extent, we are not using - this 'map_lookup' pointer, so wasting 8 bytes (on a 64 bits platform); - - 4) Extent maps associated to a chunk mapping are never merged or split so - it's pointless to use the existing extent map infrastructure. - - So add a dedicated data structure named 'btrfs_chunk_map' to represent - chunk mappings, this is basically the existing map_lookup structure with - some extra fields: - - 1) 'start' to contain the chunk logical address; - 2) 'chunk_len' to contain the chunk's length; - 3) 'stripe_size' for the stripe size; - 4) 'rb_node' for insertion into a rb tree; - 5) 'refs' for reference counting. - - This way we do a single memory allocation for chunk mappings and we don't - waste memory for them with unused/unnecessary fields from an extent_map. - - We also save 8 bytes from the extent_map structure by removing the - 'map_lookup' pointer, so the size of struct extent_map is reduced from - 144 bytes down to 136 bytes, and we can now have 30 extents map per 4K - page instead of 28. - -Upstream-Status: Backport [Uhttps://review.lttng.org/c/lttng-modules/+/11700] - -Change-Id: Ie52b5ac83df4bc6abeb84d958c4f5d24ae0d8c75 -Signed-off-by: Kienan Stewart <kstewart@efficios.com> -Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com> ---- - include/instrumentation/events/btrfs.h | 37 +++++++++++++++++++++++++- - 1 file changed, 36 insertions(+), 1 deletion(-) - -diff --git a/include/instrumentation/events/btrfs.h b/include/instrumentation/events/btrfs.h -index 7c7b9b0..a2a412b 100644 ---- a/include/instrumentation/events/btrfs.h -+++ b/include/instrumentation/events/btrfs.h -@@ -1609,7 +1609,42 @@ LTTNG_TRACEPOINT_EVENT(btrfs_delayed_ref_head, - ) - #endif - --#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,14,0)) -+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,8,0)) -+ -+LTTNG_TRACEPOINT_EVENT_CLASS(btrfs__chunk, -+ -+ TP_PROTO(const struct btrfs_fs_info *fs_info, const struct btrfs_chunk_map *map, -+ u64 offset, u64 size), -+ -+ TP_ARGS(fs_info, map, offset, size), -+ -+ TP_FIELDS( -+ ctf_integer(int, num_stripes, map->num_stripes) -+ ctf_integer(u64, type, map->type) -+ ctf_integer(int, sub_stripes, map->sub_stripes) -+ ctf_integer(u64, offset, offset) -+ ctf_integer(u64, size, size) -+ ctf_integer(u64, root_objectid, fs_info->chunk_root->root_key.objectid) -+ ) -+) -+ -+LTTNG_TRACEPOINT_EVENT_INSTANCE(btrfs__chunk, btrfs_chunk_alloc, -+ -+ TP_PROTO(const struct btrfs_fs_info *fs_info, const struct btrfs_chunk_map *map, -+ u64 offset, u64 size), -+ -+ TP_ARGS(fs_info, map, offset, size) -+) -+ -+LTTNG_TRACEPOINT_EVENT_INSTANCE(btrfs__chunk, btrfs_chunk_free, -+ -+ TP_PROTO(const struct btrfs_fs_info *fs_info, const struct btrfs_chunk_map *map, -+ u64 offset, u64 size), -+ -+ TP_ARGS(fs_info, map, offset, size) -+) -+ -+#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,14,0)) - - LTTNG_TRACEPOINT_EVENT_CLASS(btrfs__chunk, - --- -2.39.2 - |