04d2c8c83d
Instead of "<.>", use an ASCII SOH for the KERN_<LEVEL> prefix initiator. This saves 1 byte per printk, thousands of bytes in a normal kernel. No output changes are produced as vprintk_emit converts these uses to "<.>". Signed-off-by: Joe Perches <joe@perches.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
26 lines
942 B
C
26 lines
942 B
C
#ifndef __KERN_LEVELS_H__
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#define __KERN_LEVELS_H__
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#define KERN_SOH "\001" /* ASCII Start Of Header */
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#define KERN_SOH_ASCII '\001'
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#define KERN_EMERG KERN_SOH "0" /* system is unusable */
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#define KERN_ALERT KERN_SOH "1" /* action must be taken immediately */
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#define KERN_CRIT KERN_SOH "2" /* critical conditions */
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#define KERN_ERR KERN_SOH "3" /* error conditions */
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#define KERN_WARNING KERN_SOH "4" /* warning conditions */
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#define KERN_NOTICE KERN_SOH "5" /* normal but significant condition */
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#define KERN_INFO KERN_SOH "6" /* informational */
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#define KERN_DEBUG KERN_SOH "7" /* debug-level messages */
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#define KERN_DEFAULT KERN_SOH "d" /* the default kernel loglevel */
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/*
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* Annotation for a "continued" line of log printout (only done after a
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* line that had no enclosing \n). Only to be used by core/arch code
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* during early bootup (a continued line is not SMP-safe otherwise).
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*/
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#define KERN_CONT KERN_SOH "c"
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#endif
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