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docs: gdbmacros: print newest record

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@head_id points to the newest record, but the printing loop
exits when it increments to this value (before printing).

Exit the printing loop after the newest record has been printed.

The python-based function in scripts/gdb/linux/dmesg.py already
does this correctly.

Fixes: e60768311a ("scripts/gdb: update for lockless printk ringbuffer")
Cc: stable@vger.kernel.org
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20221229134339.197627-1-john.ogness@linutronix.de
This commit is contained in:
John Ogness 2022-12-29 14:49:39 +01:06 committed by Petr Mladek
parent 98d0052d0d
commit f2e4cca2f6
1 changed files with 1 additions and 1 deletions
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2
Documentation/admin-guide/kdump/gdbmacros.txt
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@ -312,10 +312,10 @@ define dmesg
set var $prev_flags = $info->flags
end
set var $id = ($id + 1) & $id_mask
if ($id == $end_id)
loop_break
end
set var $id = ($id + 1) & $id_mask
end
end
document dmesg