x86, apic: Explain show_lapic= in kernel parameters list

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: yinghai@kernel.org
Cc: macro@linux-mips.org
LKML-Reference: <20091014150904.GA5259@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 9107b387e91fce095ee320dbeed53d5dfe5cb332..465a786a3788426d7e3a0195a4b8c359ad7aaded 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -345,6 +345,15 @@ and is between 256 and 4096 characters. It is defined in the file
                        Change the amount of debugging information output
                        when initialising the APIC and IO-APIC components.
 
+       show_lapic=     [APIC,X86] Advanced Programmable Interrupt Controller
+                       Limit apic dumping. The parameter defines the maximal
+                       number of local apics being dumped. Also it is possible
+                       to set it to "all" by meaning -- no limit here.
+                       Format: { 1 (default) | 2 | ... | all }.
+                       The parameter valid if only apic=debug or
+                       apic=verbose is specified.
+                       Example: apic=debug show_lapic=all
+
        apm=            [APM] Advanced Power Management
                        See header of arch/x86/kernel/apm_32.c.