From: Joe Perches <joe@perches.com>
To: Jim Cromie <jim.cromie@gmail.com>,
jbaron@akamai.com, linux-kernel@vger.kernel.org,
akpm@linuxfoundation.org, gregkh@linuxfoundation.org
Cc: linux@rasmusvillemoes.dk
Subject: Re: [PATCH v2 09/24] dyndbg: add maybe(str,"") macro to reduce code
Date: Sat, 13 Jun 2020 09:14:02 -0700 [thread overview]
Message-ID: <030bb11d193d13a2d1c161a133bb7b88093a1fe9.camel@perches.com> (raw)
In-Reply-To: <20200613155738.2249399-10-jim.cromie@gmail.com>
On Sat, 2020-06-13 at 09:57 -0600, Jim Cromie wrote:
> reduce word count via macro, no actual object change.
>
> OTOH, maybe() could be scrubbed if printk's default printing (iirc) of
> "(null)" pointers is deemed appropriate for the log-msg.
[]
> diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
[]
> @@ -114,6 +114,7 @@ do { \
> #define vpr_info(fmt, ...) vnpr_info(1, fmt, ##__VA_ARGS__)
> #define v2pr_info(fmt, ...) vnpr_info(2, fmt, ##__VA_ARGS__)
>
> +#define maybe(str, empty) ( str ? str : empty )
This macro is unnecessary.
An even shorter very commonly used gcc extension would be
str ?: empty
next prev parent reply other threads:[~2020-06-13 16:14 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-13 15:57 [PATCH v2 00/24] dynamic_debug cleanups, query features, WIP print-classes Jim Cromie
2020-06-13 15:57 ` [PATCH v2 01/24] dyndbg-docs: eschew file /full/path query in docs Jim Cromie
2020-06-14 6:04 ` Greg KH
2020-06-14 14:24 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 02/24] dyndbg-docs: initialization is done early, not arch Jim Cromie
2020-06-13 15:57 ` [PATCH v2 03/24] dyndbg: drop obsolete comment on ddebug_proc_open Jim Cromie
2020-06-13 15:57 ` [PATCH v2 04/24] dyndbg: refine debug verbosity; 1 is basic, 2 more chatty Jim Cromie
2020-06-13 15:57 ` [PATCH v2 05/24] dyndbg: rename __verbose section to __dyndbg Jim Cromie
2020-06-13 15:57 ` [PATCH v2 06/24] dyndbg: fix overcounting of ram used by dyndbg Jim Cromie
2020-06-13 15:57 ` [PATCH v2 07/24] dyndbg: fix a BUG_ON in ddebug_describe_flags Jim Cromie
2020-06-15 13:20 ` Petr Mladek
2020-06-15 21:53 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 08/24] dyndbg: make ddebug_tables list LIFO for add/remove_module Jim Cromie
2020-06-13 15:57 ` [PATCH v2 09/24] dyndbg: add maybe(str,"") macro to reduce code Jim Cromie
2020-06-13 16:14 ` Joe Perches [this message]
2020-06-15 20:50 ` jim.cromie
2020-06-15 13:28 ` Petr Mladek
2020-06-15 20:52 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 10/24] dyndbg: refactor parse_linerange out of ddebug_parse_query Jim Cromie
2020-06-15 13:37 ` Petr Mladek
2020-06-15 22:37 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 11/24] dyndbg: accept 'file foo.c:func1' and 'file foo.c:10-100' Jim Cromie
2020-06-15 14:46 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 12/24] dyndbg: refactor ddebug_read_flags out of ddebug_parse_flags Jim Cromie
2020-06-13 15:57 ` [PATCH v2 13/24] dyndbg: combine flags & mask into a struct, use that Jim Cromie
2020-06-15 15:14 ` Petr Mladek
2020-06-16 5:47 ` jim.cromie
2020-06-16 11:34 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 14/24] dyndbg: add filter parameter to ddebug_parse_flags Jim Cromie
2020-06-15 15:17 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 15/24] dyndbg: extend ddebug_parse_flags to accept optional leading filter-flags Jim Cromie
2020-06-15 15:37 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 16/24] dyndbg: prefer declarative init in caller, to memset in callee Jim Cromie
2020-06-13 15:57 ` [PATCH v2 17/24] dyndbg: add user-flag, negating-flags, and filtering on flags Jim Cromie
2020-06-16 11:41 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 18/24] dyndbg: allow negating flag-chars in modflags Jim Cromie
2020-06-16 11:47 ` Petr Mladek
2020-06-13 15:57 ` [PATCH v2 19/24] dyndbg: accept query terms like module:foo and file=bar Jim Cromie
2020-06-16 11:57 ` Petr Mladek
2020-06-16 20:08 ` jim.cromie
2020-06-17 12:11 ` Petr Mladek
2020-06-17 13:32 ` jim.cromie
2020-06-17 14:01 ` Greg KH
2020-06-13 15:57 ` [PATCH v2 20/24] dyndbg: WIP towards debug-print-class based callsite controls Jim Cromie
2020-06-13 19:22 ` Joe Perches
2020-06-16 13:45 ` Petr Mladek
2020-06-16 21:05 ` Joe Perches
2020-06-17 9:31 ` Daniel Thompson
2020-06-17 9:52 ` Petr Mladek
2020-06-17 13:23 ` jim.cromie
2020-06-18 12:20 ` Petr Mladek
2020-06-16 21:13 ` jim.cromie
2020-06-16 21:25 ` jim.cromie
2020-06-13 15:57 ` [PATCH v2 21/24] dyndbg: adapt header macros to pass print-class Jim Cromie
2020-06-13 17:11 ` kernel test robot
2020-06-13 20:25 ` kernel test robot
2020-06-13 15:57 ` [PATCH v2 22/24] dyndbg: add print-class as trailing number to control output Jim Cromie
2020-06-13 15:57 ` [PATCH v2 23/24] kset-example: add pr_debug()s for easy visibility of its operation Jim Cromie
2020-06-14 6:05 ` Greg KH
2020-06-15 22:18 ` jim.cromie
2020-06-16 6:37 ` Greg KH
2020-06-13 15:57 ` [PATCH v2 24/24] kset-example: use pr_debug_n to create example print-classes Jim Cromie
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