linux/drivers/lightnvm
Peter Zijlstra 04ae87a520 ftrace: Rework event_create_dir()
Rework event_create_dir() to use an array of static data instead of
function pointers where possible.

The problem is that it would call the function pointer on module load
before parse_args(), possibly even before jump_labels were initialized.
Luckily the generated functions don't use jump_labels but it still seems
fragile. It also gets in the way of changing when we make the module map
executable.

The generated function are basically calling trace_define_field() with a
bunch of static arguments. So instead of a function, capture these
arguments in a static array, avoiding the function call.

Now there are a number of cases where the fields are dynamic (syscall
arguments, kprobes and uprobes), in which case a static array does not
work, for these we preserve the function call. Luckily all these cases
are not related to modules and so we can retain the function call for
them.

Also fix up all broken tracepoint definitions that now generate a
compile error.

Tested-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20191111132458.342979914@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-27 07:44:25 +01:00
..
core.c lightnvm: print error when target is not found 2019-09-05 13:17:01 -06:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile
pblk-cache.c lightnvm: pblk: IO path reorganization 2019-05-06 10:19:19 -06:00
pblk-core.c lightnvm: pblk: use kvmalloc for metadata 2019-08-06 08:20:10 -06:00
pblk-gc.c lightnvm: pblk: use kvmalloc for metadata 2019-08-06 08:20:10 -06:00
pblk-init.c lightnvm: pblk: use kvmalloc for metadata 2019-08-06 08:20:10 -06:00
pblk-map.c lightnvm: pblk: ensure that erase is chunk aligned 2019-05-06 10:19:17 -06:00
pblk-rb.c lightnvm: pblk: simplify partial read path 2019-05-06 10:19:19 -06:00
pblk-read.c lightnvm: remove unused 'geo' variable 2019-08-08 22:14:04 -06:00
pblk-recovery.c lightnvm: remove set but not used variables 'data_len' and 'rq_len' 2019-08-08 07:34:34 -06:00
pblk-rl.c pblk: fix max_io calculation 2019-03-07 08:59:26 -07:00
pblk-sysfs.c lightnvm: pblk: support packed metadata 2018-12-11 12:22:35 -07:00
pblk-trace.h ftrace: Rework event_create_dir() 2019-11-27 07:44:25 +01:00
pblk-write.c lightnvm: move metadata mapping to lower level driver 2019-08-06 08:20:10 -06:00
pblk.h lightnvm: pblk: use kvmalloc for metadata 2019-08-06 08:20:10 -06:00