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Message-ID: <20080827151759.GA10678@tsunami.ccur.com> Date: Wed, 27 Aug 2008 11:17:59 -0400 From: Joe Korty <joe.korty@...r.com> To: Ingo Molnar <mingo@...e.hu> Cc: Linux Kernel <linux-kernel@...r.kernel.org> Subject: [PATCH] shrink printk timestamp field 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@...r.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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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