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lttng-modules: fix v6.8+ build

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linux-yocto-dev is updating to 6.8 and lttng-modules needs to be updated
to account for upsream kernel fixes.

These patches are all grabbed from the lttng review gerrit and
backported to lttng-modules 2.13.0.

(From OE-Core rev: 9a8c065784a9b665246bebe3e635e0ca43cfb30a)

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Bruce Ashfield
2024-01-24 20:17:09 -05:00
committed by Richard Purdie
parent 1bd73eddb5
commit 57640e0be8
6 changed files with 434 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
meta/recipes-kernel/lttng/lttng-modules/0001-Fix-sched_stat_runtime-changed-in-linux-6.8.0-rc1.patch Normal file
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@@ -0,0 +1,70 @@
From 9e59c2f6387aeb832ae3af3095f987529722e08f Mon Sep 17 00:00:00 2001
From: Kienan Stewart <kstewart@efficios.com>
Date: Mon, 22 Jan 2024 11:10:37 -0500
Subject: [PATCH 1/5] Fix: sched_stat_runtime changed in linux 6.8.0-rc1
See upstream commit:
commit 5fe6ec8f6ab549b6422e41551abb51802bd48bc7
Author: Peter Zijlstra <peterz@infradead.org>
Date: Mon Nov 6 13:41:43 2023 +0100
sched: Remove vruntime from trace_sched_stat_runtime()
Tracing the runtime delta makes sense, observer can sum over time.
Tracing the absolute vruntime makes less sense, inconsistent:
absolute-vs-delta, but also vruntime delta can be computed from
runtime delta.
Removing the vruntime thing also makes the two tracepoint sites
identical, allowing to unify the code in a later patch.
Upstream-Status: Backport [Uhttps://review.lttng.org/c/lttng-modules/+/11700]
Change-Id: I24ebb4e06dbb646a1af75ac62b74f3821ff197de
Signed-off-by: Kienan Stewart <kstewart@efficios.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
---
include/instrumentation/events/sched.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/include/instrumentation/events/sched.h b/include/instrumentation/events/sched.h
index 066a0f8..24cf37c 100644
--- a/include/instrumentation/events/sched.h
+++ b/include/instrumentation/events/sched.h
@@ -646,6 +646,24 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_blocked,
TP_ARGS(tsk, delay))
#endif
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,8,0))
+/*
+ * Tracepoint for accounting runtime (time the task is executing
+ * on a CPU).
+ */
+LTTNG_TRACEPOINT_EVENT(sched_stat_runtime,
+
+ TP_PROTO(struct task_struct *tsk, u64 runtime),
+
+ TP_ARGS(tsk, runtime),
+
+ TP_FIELDS(
+ ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
+ ctf_integer(pid_t, tid, tsk->pid)
+ ctf_integer(u64, runtime, runtime)
+ )
+)
+#else
/*
* Tracepoint for accounting runtime (time the task is executing
* on a CPU).
@@ -663,6 +681,7 @@ LTTNG_TRACEPOINT_EVENT(sched_stat_runtime,
ctf_integer(u64, vruntime, vruntime)
)
)
+#endif
#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,12,0) || \
LTTNG_RT_KERNEL_RANGE(4,9,27,18, 4,10,0,0) || \
--
2.39.2

100
meta/recipes-kernel/lttng/lttng-modules/0002-Fix-timer_start-changed-in-linux-6.8.0-rc1.patch Normal file
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@@ -0,0 +1,100 @@
From d52ab4b9a71a4bef535dadb8e7062112ac5c0c88 Mon Sep 17 00:00:00 2001
From: Kienan Stewart <kstewart@efficios.com>
Date: Mon, 22 Jan 2024 11:33:39 -0500
Subject: [PATCH 2/5] Fix: timer_start changed in linux 6.8.0-rc1
See upstream commit
commit dbcdcb62b59db2cf6a24113873b90da15c6f0b19
Author: Anna-Maria Behnsen <anna-maria@linutronix.de>
Date: Fri Dec 1 10:26:26 2023 +0100
tracing/timers: Enhance timer_start tracepoint
For starting a timer, the timer is enqueued into a bucket of the timer
wheel. The bucket expiry is the defacto expiry of the timer but it is not
equal the timer expiry because of increasing granularity when bucket is in
a higher level of the wheel. To be able to figure out in a trace whether a
timer expired in time or not, the bucket expiry time is required as well.
Add bucket expiry time to the timer_start tracepoint and thereby simplify
the arguments.
Upstream-Status: Backport [Uhttps://review.lttng.org/c/lttng-modules/+/11700]
Change-Id: I4868092765745b1efd0c48f13c0b837f2007dcb6
Signed-off-by: Kienan Stewart <kstewart@efficios.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
---
include/instrumentation/events/timer.h | 24 +++++++++++++-----------
1 file changed, 13 insertions(+), 11 deletions(-)
diff --git a/include/instrumentation/events/timer.h b/include/instrumentation/events/timer.h
index 91a2cd9..ce571f5 100644
--- a/include/instrumentation/events/timer.h
+++ b/include/instrumentation/events/timer.h
@@ -45,8 +45,7 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_init,
TP_ARGS(timer)
)
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0) || \
- LTTNG_RHEL_KERNEL_RANGE(3,10,0,957,0,0, 3,11,0,0,0,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,8,0))
/**
* timer_start - called when the timer is started
* @timer: pointer to struct timer_list
@@ -55,39 +54,42 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_init,
*/
LTTNG_TRACEPOINT_EVENT(timer_start,
- TP_PROTO(struct timer_list *timer, unsigned long expires,
- unsigned int flags),
+ TP_PROTO(struct timer_list *timer, unsigned long bucket_expiry),
- TP_ARGS(timer, expires, flags),
+ TP_ARGS(timer, bucket_expiry),
TP_FIELDS(
ctf_integer_hex(void *, timer, timer)
ctf_integer_hex(void *, function, timer->function)
- ctf_integer(unsigned long, expires, expires)
+ ctf_integer(unsigned long, expires, timer->expires)
+ ctf_integer(unsigned long, bucket_expiry, bucket_expiry)
ctf_integer(unsigned long, now, jiffies)
- ctf_integer(unsigned int, flags, flags)
+ ctf_integer(unsigned int, flags, timer->flags)
)
)
-#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
+#else
/**
* timer_start - called when the timer is started
* @timer: pointer to struct timer_list
* @expires: the timers expiry time
+ * @flags: the timers expiry time
*/
LTTNG_TRACEPOINT_EVENT(timer_start,
- TP_PROTO(struct timer_list *timer, unsigned long expires),
+ TP_PROTO(struct timer_list *timer, unsigned long expires,
+ unsigned int flags),
- TP_ARGS(timer, expires),
+ TP_ARGS(timer, expires, flags),
TP_FIELDS(
ctf_integer_hex(void *, timer, timer)
ctf_integer_hex(void *, function, timer->function)
ctf_integer(unsigned long, expires, expires)
ctf_integer(unsigned long, now, jiffies)
+ ctf_integer(unsigned int, flags, flags)
)
)
-#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,2,0)) */
+#endif
#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,2,0) || \
LTTNG_RHEL_KERNEL_RANGE(4,18,0,193,0,0, 4,19,0,0,0,0))
--
2.39.2

46
meta/recipes-kernel/lttng/lttng-modules/0003-Fix-strlcopy-removed-in-linux-6.8.0-rc1.patch Normal file
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@@ -0,0 +1,46 @@
From 7432f583674294b676577b6505b89fc74dc5c7ab Mon Sep 17 00:00:00 2001
From: Kienan Stewart <kstewart@efficios.com>
Date: Mon, 22 Jan 2024 11:47:40 -0500
Subject: [PATCH 3/5] Fix: strlcopy removed in linux 6.8.0-rc1
See upstream commit:
commit d26270061ae66b915138af7cd73ca6f8b85e6b44
Author: Kees Cook <keescook@chromium.org>
Date: Thu Jan 18 12:31:55 2024 -0800
string: Remove strlcpy()
With all the users of strlcpy() removed[1] from the kernel, remove the
API, self-tests, and other references. Leave mentions in Documentation
(about its deprecation), and in checkpatch.pl (to help migrate host-only
tools/ usage). Long live strscpy().
Upstream-Status: Backport [Uhttps://review.lttng.org/c/lttng-modules/+/11700]
Change-Id: I27cdff70a504b25340cc59150ed8e959d9629e43
Signed-off-by: Kienan Stewart <kstewart@efficios.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
---
src/lib/ringbuffer/ring_buffer_backend.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/lib/ringbuffer/ring_buffer_backend.c b/src/lib/ringbuffer/ring_buffer_backend.c
index 9a339be..2181145 100644
--- a/src/lib/ringbuffer/ring_buffer_backend.c
+++ b/src/lib/ringbuffer/ring_buffer_backend.c
@@ -405,7 +405,11 @@ int channel_backend_init(struct channel_backend *chanb,
chanb->extra_reader_sb =
(config->mode == RING_BUFFER_OVERWRITE) ? 1 : 0;
chanb->num_subbuf = num_subbuf;
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,8,0))
+ strscpy(chanb->name, name, NAME_MAX);
+#else
strlcpy(chanb->name, name, NAME_MAX);
+#endif
memcpy(&chanb->config, config, sizeof(chanb->config));
if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) {
--
2.39.2

124
meta/recipes-kernel/lttng/lttng-modules/0004-Fix-btrfs_chunk-tracepoints-changed-in-linux-6.8.0-r.patch Normal file
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@@ -0,0 +1,124 @@
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

88
meta/recipes-kernel/lttng/lttng-modules/0005-Fix-btrfs_get_extent-flags-and-compress_type-changed.patch Normal file
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@@ -0,0 +1,88 @@
From 86db094386b43bb5c6b47552f9a4826ca8ba917d Mon Sep 17 00:00:00 2001
From: Kienan Stewart <kstewart@efficios.com>
Date: Mon, 22 Jan 2024 13:13:36 -0500
Subject: [PATCH 5/5] Fix: btrfs_get_extent flags and compress_type changed in
linux 6.8.0-rc1
See upstream commit:
commit f86f7a75e2fb5fd7d31d00eab8a392f97ba42ce9
Author: Filipe Manana <fdmanana@suse.com>
Date: Mon Dec 4 16:20:33 2023 +0000
btrfs: use the flags of an extent map to identify the compression type
Currently, in struct extent_map, we use an unsigned int (32 bits) to
identify the compression type of an extent and an unsigned long (64 bits
on a 64 bits platform, 32 bits otherwise) for flags. We are only using
6 different flags, so an unsigned long is excessive and we can use flags
to identify the compression type instead of using a dedicated 32 bits
field.
We can easily have tens or hundreds of thousands (or more) of extent maps
on busy and large filesystems, specially with compression enabled or many
or large files with tons of small extents. So it's convenient to have the
extent_map structure as small as possible in order to use less memory.
So remove the compression type field from struct extent_map, use flags
to identify the compression type and shorten the flags field from an
unsigned long to a u32. This saves 8 bytes (on 64 bits platforms) and
reduces the size of the structure from 136 bytes down to 128 bytes, using
now only two cache lines, and increases the number of extent maps we can
have per 4K page from 30 to 32. By using a u32 for the flags instead of
an unsigned long, we no longer use test_bit(), set_bit() and clear_bit(),
but that level of atomicity is not needed as most flags are never cleared
once set (before adding an extent map to the tree), and the ones that can
be cleared or set after an extent map is added to the tree, are always
performed while holding the write lock on the extent map tree, while the
reader holds a lock on the tree or tests for a flag that never changes
once the extent map is in the tree (such as compression flags).
Upstream-Status: Backport [Uhttps://review.lttng.org/c/lttng-modules/+/11700]
Change-Id: I95402d43f064c016b423b48652e4968d3db9b8a9
Signed-off-by: Kienan Stewart <kstewart@efficios.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
---
include/instrumentation/events/btrfs.h | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/include/instrumentation/events/btrfs.h b/include/instrumentation/events/btrfs.h
index a2a412b..ffb1b64 100644
--- a/include/instrumentation/events/btrfs.h
+++ b/include/instrumentation/events/btrfs.h
@@ -177,7 +177,30 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(btrfs__inode, btrfs_inode_evict,
)
#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(btrfs_get_extent,
+
+ TP_PROTO(const struct btrfs_root *root, const struct btrfs_inode *inode,
+ const struct extent_map *map),
+
+ TP_ARGS(root, inode, map),
+
+ TP_FIELDS(
+ ctf_integer(u64, root_objectid, root->root_key.objectid)
+ ctf_integer(u64, ino, btrfs_ino(inode))
+ ctf_integer(u64, start, map->start)
+ ctf_integer(u64, len, map->len)
+ ctf_integer(u64, orig_start, map->orig_start)
+ ctf_integer(u64, block_start, map->block_start)
+ ctf_integer(u64, block_len, map->block_len)
+ ctf_integer(unsigned int, flags, map->flags)
+ ctf_integer(int, refs, refcount_read(&map->refs))
+ ctf_integer(unsigned int, compress_type, extent_map_compression(map))
+ )
+)
+
+#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,14,0))
LTTNG_TRACEPOINT_EVENT(btrfs_get_extent,
--
2.39.2

7
meta/recipes-kernel/lttng/lttng-modules_2.13.11.bb
View File

@@ -10,7 +10,12 @@ inherit module
include lttng-platforms.inc
SRC_URI = "https://lttng.org/files/${BPN}/${BPN}-${PV}.tar.bz2 \
"
file://0001-Fix-sched_stat_runtime-changed-in-linux-6.8.0-rc1.patch \
file://0002-Fix-timer_start-changed-in-linux-6.8.0-rc1.patch \
file://0003-Fix-strlcopy-removed-in-linux-6.8.0-rc1.patch \
file://0004-Fix-btrfs_chunk-tracepoints-changed-in-linux-6.8.0-r.patch \
file://0005-Fix-btrfs_get_extent-flags-and-compress_type-changed.patch \
"
# Use :append here so that the patch is applied also when using devupstream
SRC_URI:append = " file://0001-src-Kbuild-change-missing-CONFIG_TRACEPOINTS-to-warn.patch"