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[PATCH] kdump: add dmesg gdbmacro into document

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Add gdb macro which print the kernel ring buffer into kdump docs

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Akinobu Mita 2006-01-11 12:17:30 -08:00 committed by Linus Torvalds
parent beb25c6e27
commit 8428cfe893
1 changed files with 22 additions and 0 deletions
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22
Documentation/kdump/gdbmacros.txt
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@ -177,3 +177,25 @@ document trapinfo
'trapinfo <pid>' will tell you by which trap & possibly 'trapinfo <pid>' will tell you by which trap & possibly
addresthe kernel paniced. addresthe kernel paniced.
end end
define dmesg
set $i = 0
set $end_idx = (log_end - 1) & (log_buf_len - 1)
while ($i < logged_chars)
set $idx = (log_end - 1 - logged_chars + $i) & (log_buf_len - 1)
if ($idx + 100 <= $end_idx) || \
($end_idx <= $idx && $idx + 100 < log_buf_len)
printf "%.100s", &log_buf[$idx]
set $i = $i + 100
else
printf "%c", log_buf[$idx]
set $i = $i + 1
end
end
end
document dmesg
print the kernel ring buffer
end