Hi Joe, > -----Original Message----- > From: Joe Perches [mailto:joe@xxxxxxxxxxx] > Sent: Monday, February 28, 2011 9:26 PM > To: Bing Zhao > Cc: linux-kernel@xxxxxxxxxxxxxxx; linux-wireless@xxxxxxxxxxxxxxx; John W. Linville; Johannes Berg; > Amitkumar Karwar; Kiran Divekar; Frank Huang > Subject: Re: [RFC v2 1/2] dynamic debug: add dynamic_hexdump_debug macro > > On Mon, 2011-02-28 at 21:06 -0800, Bing Zhao wrote: > > dynamic_hexdump_debug(str, buf, len) > > > diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h > > +#define dynamic_hexdump_debug(str, buf, len) \ > > +do { \ > > + static struct _ddebug descriptor \ > > + __used \ > > + __attribute__((section("__verbose"), aligned(8))) = \ > > + { KBUILD_MODNAME, __func__, __FILE__, str, __LINE__, \ > > + _DPRINTK_FLAGS_DEFAULT }; \ > > + if (unlikely(descriptor.enabled)) { \ > > + printk(KERN_DEBUG str); \ > > + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \ > > Perhaps > print_hex_dump(str, DUMP_PREFIX_OFFSET, buf, len); I wanted to print the "str" as a subject line, like this: mwifiex data: tx_buf: 00000000: 34 8c 24 a0 ff ff ff ff 36 72 24 a0 ff ff ff ff 4.$.....6r$..... 00000010: d7 7f 24 a0 ff ff ff ff 80 8e 24 a0 ff ff ff ff ..$.......$..... 00000020: df 7d 24 a0 ff ff .}$... The "str" will serve as the prefix strings if we use print_hex_dump(KERN_DEBUG, str, DUMP_PREFIX_OFFSET, 16, 1, buf, len, true); mwifiex data: tx_buf:00000000: 34 8c 24 a0 ff ff ff ff 36 72 24 a0 ff ff ff ff 4.$.....6r$..... mwifiex data: tx_buf:00000010: d7 7f 24 a0 ff ff ff ff 80 8e 24 a0 ff ff ff ff ..$.......$..... mwifiex data: tx_buf:00000020: df 7d 24 a0 ff ff .}$... I'm okay with this format too. Thanks, Bing ÿô.nÇ·®+%˱é¥wÿº{.nÇ·¥{±ÿ«zW¬³ø¡Ü}©²ÆzÚj:+v¨þø®w¥þàÞ¨è&¢)ß«a¶Úÿûz¹ÞúÝjÿwèf