IPMI: documentation fixes
Clean up IPMI documentation to remove references to high-res timers and add
info about the polling thread. Also fix an doc error for a parameter.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/Documentation/IPMI.txt b/Documentation/IPMI.txt
index 24dc3fc..83b0545 100644
--- a/Documentation/IPMI.txt
+++ b/Documentation/IPMI.txt
@@ -441,17 +441,20 @@
0xca2. If you want to turn this off, set the "trydefaults" option to
false.
-If you have high-res timers compiled into the kernel, the driver will
-use them to provide much better performance. Note that if you do not
-have high-res timers enabled in the kernel and you don't have
-interrupts enabled, the driver will run VERY slowly. Don't blame me,
+If your IPMI interface does not support interrupts and is a KCS or
+SMIC interface, the IPMI driver will start a kernel thread for the
+interface to help speed things up. This is a low-priority kernel
+thread that constantly polls the IPMI driver while an IPMI operation
+is in progress. The force_kipmid module parameter will all the user to
+force this thread on or off. If you force it off and don't have
+interrupts, the driver will run VERY slowly. Don't blame me,
these interfaces suck.
The driver supports a hot add and remove of interfaces. This way,
interfaces can be added or removed after the kernel is up and running.
-This is done using /sys/modules/ipmi_si/hotmod, which is a write-only
-parameter. You write a string to this interface. The string has the
-format:
+This is done using /sys/modules/ipmi_si/parameters/hotmod, which is a
+write-only parameter. You write a string to this interface. The string
+has the format:
<op1>[:op2[:op3...]]
The "op"s are:
add|remove,kcs|bt|smic,mem|i/o,<address>[,<opt1>[,<opt2>[,...]]]