Messages in this thread Patch in this message | | | Date | Wed, 27 Aug 2008 11:17:59 -0400 | From | Joe Korty <> | Subject | [PATCH] shrink printk timestamp field |
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Shrink the printk timestamp field.
Keep the printk timestamp from occupying more of the scarce, 80-column console line space than it really needs.
We eliminate the excessive whitespace the field added to the line, and reduce timestamp precision from six digits (usecs) to three digits (msecs). msecs seems adequate for the purpose of tracking boot sequence timing issues.
Signed-off-by: Joe Korty <joe.korty@ccur.com>
Index: 2.6.27-rc4-git4/kernel/printk.c =================================================================== --- 2.6.27-rc4-git4.orig/kernel/printk.c 2008-08-26 18:23:03.000000000 -0400 +++ 2.6.27-rc4-git4/kernel/printk.c 2008-08-26 18:23:49.000000000 -0400 @@ -739,9 +739,9 @@ t = cpu_clock(printk_cpu); nanosec_rem = do_div(t, 1000000000); - tlen = sprintf(tbuf, "[%5lu.%06lu] ", + tlen = sprintf(tbuf, "[%3lu.%03lu] ", (unsigned long) t, - nanosec_rem / 1000); + nanosec_rem / 1000000); for (tp = tbuf; tp < tbuf + tlen; tp++) emit_log_char(*tp);
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