linux/samples
Steven Rostedt (Google) 2c92ca849f tracing/treewide: Remove second parameter of __assign_str()
With the rework of how the __string() handles dynamic strings where it
saves off the source string in field in the helper structure[1], the
assignment of that value to the trace event field is stored in the helper
value and does not need to be passed in again.

This means that with:

  __string(field, mystring)

Which use to be assigned with __assign_str(field, mystring), no longer
needs the second parameter and it is unused. With this, __assign_str()
will now only get a single parameter.

There's over 700 users of __assign_str() and because coccinelle does not
handle the TRACE_EVENT() macro I ended up using the following sed script:

  git grep -l __assign_str | while read a ; do
      sed -e 's/\(__assign_str([^,]*[^ ,]\) *,[^;]*/\1)/' $a > /tmp/test-file;
      mv /tmp/test-file $a;
  done

I then searched for __assign_str() that did not end with ';' as those
were multi line assignments that the sed script above would fail to catch.

Note, the same updates will need to be done for:

  __assign_str_len()
  __assign_rel_str()
  __assign_rel_str_len()

I tested this with both an allmodconfig and an allyesconfig (build only for both).

[1] https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org/

Link: https://lore.kernel.org/linux-trace-kernel/20240516133454.681ba6a0@rorschach.local.home

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Christian König <christian.koenig@amd.com> for the amdgpu parts.
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #for
Acked-by: Rafael J. Wysocki <rafael@kernel.org> # for thermal
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Darrick J. Wong <djwong@kernel.org>	# xfs
Tested-by: Guenter Roeck <linux@roeck-us.net>
2024-05-22 20:14:47 -04:00
..
acrn virt: acrn: Fix typos 2024-05-04 18:59:44 +02:00
auxdisplay
binderfs
bpf Kbuild updates for v6.10 2024-05-18 12:39:20 -07:00
cgroup
configfs
connector
coresight
fanotify
fprobe
ftrace
hid kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
hidraw
hw_breakpoint
kdb
kfifo kfifo: don't use "proxy" headers 2024-05-08 08:41:27 -07:00
kmemleak
kobject
kprobes
landlock samples/landlock: Add support for LANDLOCK_ACCESS_FS_IOCTL_DEV 2024-05-13 06:58:33 +02:00
livepatch
mei
nitro_enclaves
pfsm
pidfd
pktgen
qmi
rpmsg
rust rust: sync: update Arc and UniqueArc to take allocation flags 2024-04-16 22:50:04 +02:00
seccomp
timers
trace_events tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
trace_printk
uhid
user_events
v4l
vfio-mdev vfio/mbochs: make mbochs_class constant 2024-03-05 15:15:27 -07:00
vfs
watch_queue
watchdog
Kconfig
Makefile