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authorRalf Baechle <ralf@linux-mips.org>2000-11-18 13:22:31 +0000
committerRalf Baechle <ralf@linux-mips.org>2000-11-18 13:22:31 +0000
commit32cc38229ac7538f2346918a09e75413e8861f87 (patch)
tree2a33d3b83f807bf06c5c8ee8c383b532b1f8bef9 /Documentation
parentef4c5609242bfc8742338fdafa867315ef44e2af (diff)
New configuration option CONFIG_MIPS_UNCACHED. Not yet selectable due
to the manuals documenting ll/sc operation as undefined for uncached memory.
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/Configure.help8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/Configure.help b/Documentation/Configure.help
index a0b5e7e4c..6a0fa1e49 100644
--- a/Documentation/Configure.help
+++ b/Documentation/Configure.help
@@ -14325,6 +14325,14 @@ CONFIG_REMOTE_DEBUG
better 32 MB RAM to avoid excessive linking time. This is only
useful for kernel hackers. If unsure, say N.
+Run uncached
+CONFIG_MIPS_UNCACHED
+ If you say Y here there kernel will disable all CPU caches. This will
+ reduce the system's performance dramatically but can help finding
+ otherwise hard to track bugs. It can also useful if you're doing
+ hardware debugging with a logic analyzer and need to see all traffic
+ on the bus.
+
Magic System Request Key support
CONFIG_MAGIC_SYSRQ
If you say Y here, you will have some control over the system even