linux-kernel - [PATCH v4 00/16] dynamic-debug cleanups, 2 new features

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Date:   Mon,  9 Dec 2019 19:27:26 -0700
From:   Jim Cromie <jim.cromie@...il.com>
To:     jbaron@...mai.com, linux-kernel@...r.kernel.org,
        akpm@...uxfoundation.org
Cc:     gregkh@...uxfoundation.org, linux@...musvillemoes.dk,
        Jim Cromie <jim.cromie@...il.com>
Subject: [PATCH v4 00/16] dynamic-debug cleanups, 2 new features

changes from v3:
  drop name change, at best it was not fully considered
  microoptimization LIFO ddebug_tables list.
  drop doc example comment changes.
  use -v4 in format-patch
  
changes from v2:
  only claim one user flag, dont really need more
  fix patchset grooming err Reported-by: kbuild test robot <lkp@...el.com>
  quoting tweaks in Docs
  rename to lib/dyndbg.c, update docs accordingly
  
changes from v1:
  dont drop trim_prefix yet, its harmless, and better supports old compilers.
  dont move externs to header, despite checkpatch

v1: https://lkml.org/lkml/2019/10/29/989
v2: https://lkml.org/lkml/2019/11/27/547
v3: https://lkml.org/lkml/2019/12/5/735

New Features (review):

accept new query input:
  file inode.c:100-200		# & line-range
  file inode.c:start_*		# & function

add 'u' user flag, allowing user to compose an arbitrary set of
callsites by marking them with 'u', without altering current
print-modifying flags.

extend flags-spec to accept filter-flags before OP and mod-flags,
which select callsites for modification based upon their current
flags.  This lets user activate the set of callsites composed
previously (u+p).

add negating flags to filter on absence of flags, or to negate a modification.


Jim Cromie (16):
  dyndbg-docs: eschew file /full/path query in docs
  dyndbg: drop obsolete comment on ddebug_proc_open
  dyndbg: raise verbosity needed to enable ddebug_proc_* logging
  dyndbg: rename __verbose section to __dyndbg
  dyndbg: fix overcounting of ram used by dyndbg
  dyndbg: fix a BUG_ON in ddebug_describe_flags
  dyndbg: refactor parse_linerange out of ddebug_parse_query
  dyndbg: accept 'file foo.c:func1' and 'file foo.c:10-100'
  dyndbg: refactor ddebug_read_flags out of ddebug_parse_flags
  dyndbg: combine flags & mask into a struct, use that
  dyndbg: add filter parameter to ddebug_parse_flags
  dyndbg: extend ddebug_parse_flags to accept optional filter-flags
  dyndbg: prefer declarative init in caller, to memset in callee
  dyndbg: add user-flag, negating-flags, and filtering on flags
  dyndbg: allow negating flag-chars in modflags
  dyndbg: make ddebug_tables list LIFO for add/remove_module

 .../admin-guide/dynamic-debug-howto.rst       |  75 +++--
 include/asm-generic/vmlinux.lds.h             |   6 +-
 include/linux/dynamic_debug.h                 |   5 +-
 kernel/module.c                               |   2 +-
 lib/dynamic_debug.c                           | 281 +++++++++++-------
 5 files changed, 229 insertions(+), 140 deletions(-)

-- 
2.23.0