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extract and use FILE_LINE macro

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Extract nifty FILE_LINE useful for printk style debugging:

	printk("%s\n", FILE_LINE);

It should not be used en mass probably because __FILE__ string literals
can be merged while FILE_LINE's won't. But for debugging it is what
the doctor ordered.

Don't add leading and trailing underscores, they're painful to type. 
Trust me, I've tried both versions.

Link: https://lkml.kernel.org/r/ebf12ac4-5a61-4b12-b8b0-1253eb371332@p183
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan 2023-09-16 21:21:31 +03:00 committed by Andrew Morton
parent c37e56cac3
commit 5097a69d67
4 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/fortify-string.h
View File

@ -643,7 +643,7 @@ __FORTIFY_INLINE bool fortify_memcpy_chk(__kernel_size_t size,
__q_size_field, #op), \
#op ": detected field-spanning write (size %zu) of single %s (size %zu)\n", \
__fortify_size, \
"field \"" #p "\" at " __FILE__ ":" __stringify(__LINE__), \
"field \"" #p "\" at " FILE_LINE, \
__p_size_field); \
__underlying_##op(p, q, __fortify_size); \
})

2
include/linux/stringify.h
View File

@ -9,4 +9,6 @@
#define __stringify_1(x...) #x
#define __stringify(x...) __stringify_1(x)
#define FILE_LINE __FILE__ ":" __stringify(__LINE__)
#endif /* !__LINUX_STRINGIFY_H */

3
include/linux/timer.h
View File

@ -77,8 +77,7 @@ struct timer_list {
.entry = { .next = TIMER_ENTRY_STATIC }, \
.function = (_function), \
.flags = (_flags), \
__TIMER_LOCKDEP_MAP_INITIALIZER( \
__FILE__ ":" __stringify(__LINE__)) \
__TIMER_LOCKDEP_MAP_INITIALIZER(FILE_LINE) \
}
#define DEFINE_TIMER(_name, _function) \

9
sound/pci/asihpi/hpidebug.h
View File

@ -29,16 +29,15 @@ enum { HPI_DEBUG_LEVEL_ERROR = 0, /* always log errors */
the start of each message, eg see linux kernel hpios.h */
#ifdef SOURCEFILE_NAME
#undef FILE_LINE
#define FILE_LINE SOURCEFILE_NAME ":" __stringify(__LINE__) " "
#else
#define FILE_LINE __FILE__ ":" __stringify(__LINE__) " "
#endif
#define HPI_DEBUG_ASSERT(expression) \
do { \
if (!(expression)) { \
printk(KERN_ERR FILE_LINE \
"ASSERT " __stringify(expression)); \
" ASSERT " __stringify(expression)); \
} \
} while (0)
@ -46,7 +45,7 @@ enum { HPI_DEBUG_LEVEL_ERROR = 0, /* always log errors */
do { \
if (hpi_debug_level >= HPI_DEBUG_LEVEL_##level) { \
printk(HPI_DEBUG_FLAG_##level \
FILE_LINE __VA_ARGS__); \
FILE_LINE " " __VA_ARGS__); \
} \
} while (0)
@ -70,7 +69,7 @@ void hpi_debug_data(u16 *pdata, u32 len);
do { \
if (hpi_debug_level >= HPI_DEBUG_LEVEL_##level) { \
hpi_debug_message(phm, HPI_DEBUG_FLAG_##level \
FILE_LINE __stringify(level)); \
FILE_LINE " " __stringify(level)); \
} \
} while (0)