Re: Linux 2.4.5-ac7

[Mikael Pettersson <mikpe@csd.uu.se>]

On Sun, 3 Jun 2001 00:23:10 +0100, Alan Cox wrote:

>2.4.5-ac6
>...
>o	Resync with Eric's master Configure.help	(Eric Raymond)

ac5->ac6 accidentally(?) dropped the help text for CONFIG_X86_UP_APIC.
Patch below (vs -ac7) adds it back. Please apply.

/Mikael

--- linux-2.4.5-ac7/Documentation/Configure.help.~1~	Sun Jun  3 12:59:52 2001
+++ linux-2.4.5-ac7/Documentation/Configure.help	Sun Jun  3 13:06:50 2001
@@ -243,6 +243,18 @@
   chip, if it's not found then Linux falls back to PC-style interrupt
   handling.
 
+APIC Support on Uniprocessors
+CONFIG_X86_UP_APIC
+  APIC (Advanced Programmable Interrupt Controller) is a scheme for
+  delivering hardware interrupt requests to the CPU. It is commonly
+  used on systems with several CPUs. If you have a single-CPU system
+  which has a processor that has an integrated APIC, you can say Y
+  here to enable and use it. If you say Y here even though your
+  machine doesn't have an APIC, then the kernel will still run with no
+  slowdown at all. The advantage of APIC support is the possibility
+  to use performance counters, and the APIC based NMI watchdog which
+  detects hard lockups.
+
 Kernel math emulation
 CONFIG_MATH_EMULATION
   Linux can emulate a math coprocessor (used for floating point