Merge git://git.infradead.org/battery-2.6

[pandora-kernel.git] / Documentation / fault-injection / fault-injection.txt

diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt
index 4bc374a..0793056 100644 (file)
--- a/Documentation/fault-injection/fault-injection.txt
+++ b/Documentation/fault-injection/fault-injection.txt
@@ -29,16 +29,16 @@ o debugfs entries
 fault-inject-debugfs kernel module provides some debugfs entries for runtime
 configuration of fault-injection capabilities.
 
-- /debug/fail*/probability:
+- /sys/kernel/debug/fail*/probability:
 
        likelihood of failure injection, in percent.
        Format: <percent>
 
        Note that one-failure-per-hundred is a very high error rate
        for some testcases.  Consider setting probability=100 and configure
-       /debug/fail*/interval for such testcases.
+       /sys/kernel/debug/fail*/interval for such testcases.
 
-- /debug/fail*/interval:
+- /sys/kernel/debug/fail*/interval:
 
        specifies the interval between failures, for calls to
        should_fail() that pass all the other tests.
@@ -46,18 +46,18 @@ configuration of fault-injection capabilities.
        Note that if you enable this, by setting interval>1, you will
        probably want to set probability=100.
 
-- /debug/fail*/times:
+- /sys/kernel/debug/fail*/times:
 
        specifies how many times failures may happen at most.
        A value of -1 means "no limit".
 
-- /debug/fail*/space:
+- /sys/kernel/debug/fail*/space:
 
        specifies an initial resource "budget", decremented by "size"
        on each call to should_fail(,size).  Failure injection is
        suppressed until "space" reaches zero.
 
-- /debug/fail*/verbose
+- /sys/kernel/debug/fail*/verbose
 
        Format: { 0 | 1 | 2 }
        specifies the verbosity of the messages when failure is
@@ -65,17 +65,17 @@ configuration of fault-injection capabilities.
        log line per failure; '2' will print a call trace too -- useful
        to debug the problems revealed by fault injection.
 
-- /debug/fail*/task-filter:
+- /sys/kernel/debug/fail*/task-filter:
 
        Format: { 'Y' | 'N' }
        A value of 'N' disables filtering by process (default).
        Any positive value limits failures to only processes indicated by
        /proc/<pid>/make-it-fail==1.
 
-- /debug/fail*/require-start:
-- /debug/fail*/require-end:
-- /debug/fail*/reject-start:
-- /debug/fail*/reject-end:
+- /sys/kernel/debug/fail*/require-start:
+- /sys/kernel/debug/fail*/require-end:
+- /sys/kernel/debug/fail*/reject-start:
+- /sys/kernel/debug/fail*/reject-end:
 
        specifies the range of virtual addresses tested during
        stacktrace walking.  Failure is injected only if some caller
@@ -84,26 +84,26 @@ configuration of fault-injection capabilities.
        Default required range is [0,ULONG_MAX) (whole of virtual address space).
        Default rejected range is [0,0).
 
-- /debug/fail*/stacktrace-depth:
+- /sys/kernel/debug/fail*/stacktrace-depth:
 
        specifies the maximum stacktrace depth walked during search
        for a caller within [require-start,require-end) OR
        [reject-start,reject-end).
 
-- /debug/fail_page_alloc/ignore-gfp-highmem:
+- /sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem:
 
        Format: { 'Y' | 'N' }
        default is 'N', setting it to 'Y' won't inject failures into
        highmem/user allocations.
 
-- /debug/failslab/ignore-gfp-wait:
-- /debug/fail_page_alloc/ignore-gfp-wait:
+- /sys/kernel/debug/failslab/ignore-gfp-wait:
+- /sys/kernel/debug/fail_page_alloc/ignore-gfp-wait:
 
        Format: { 'Y' | 'N' }
        default is 'N', setting it to 'Y' will inject failures
        only into non-sleep allocations (GFP_ATOMIC allocations).
 
-- /debug/fail_page_alloc/min-order:
+- /sys/kernel/debug/fail_page_alloc/min-order:
 
        specifies the minimum page allocation order to be injected
        failures.
@@ -166,13 +166,13 @@ o Inject slab allocation failures into module init/exit code
 #!/bin/bash
 
 FAILTYPE=failslab
-echo Y > /debug/$FAILTYPE/task-filter
-echo 10 > /debug/$FAILTYPE/probability
-echo 100 > /debug/$FAILTYPE/interval
-echo -1 > /debug/$FAILTYPE/times
-echo 0 > /debug/$FAILTYPE/space
-echo 2 > /debug/$FAILTYPE/verbose
-echo 1 > /debug/$FAILTYPE/ignore-gfp-wait
+echo Y > /sys/kernel/debug/$FAILTYPE/task-filter
+echo 10 > /sys/kernel/debug/$FAILTYPE/probability
+echo 100 > /sys/kernel/debug/$FAILTYPE/interval
+echo -1 > /sys/kernel/debug/$FAILTYPE/times
+echo 0 > /sys/kernel/debug/$FAILTYPE/space
+echo 2 > /sys/kernel/debug/$FAILTYPE/verbose
+echo 1 > /sys/kernel/debug/$FAILTYPE/ignore-gfp-wait
 
 faulty_system()
 {
@@ -217,20 +217,20 @@ then
        exit 1
 fi
 
-cat /sys/module/$module/sections/.text > /debug/$FAILTYPE/require-start
-cat /sys/module/$module/sections/.data > /debug/$FAILTYPE/require-end
+cat /sys/module/$module/sections/.text > /sys/kernel/debug/$FAILTYPE/require-start
+cat /sys/module/$module/sections/.data > /sys/kernel/debug/$FAILTYPE/require-end
 
-echo N > /debug/$FAILTYPE/task-filter
-echo 10 > /debug/$FAILTYPE/probability
-echo 100 > /debug/$FAILTYPE/interval
-echo -1 > /debug/$FAILTYPE/times
-echo 0 > /debug/$FAILTYPE/space
-echo 2 > /debug/$FAILTYPE/verbose
-echo 1 > /debug/$FAILTYPE/ignore-gfp-wait
-echo 1 > /debug/$FAILTYPE/ignore-gfp-highmem
-echo 10 > /debug/$FAILTYPE/stacktrace-depth
+echo N > /sys/kernel/debug/$FAILTYPE/task-filter
+echo 10 > /sys/kernel/debug/$FAILTYPE/probability
+echo 100 > /sys/kernel/debug/$FAILTYPE/interval
+echo -1 > /sys/kernel/debug/$FAILTYPE/times
+echo 0 > /sys/kernel/debug/$FAILTYPE/space
+echo 2 > /sys/kernel/debug/$FAILTYPE/verbose
+echo 1 > /sys/kernel/debug/$FAILTYPE/ignore-gfp-wait
+echo 1 > /sys/kernel/debug/$FAILTYPE/ignore-gfp-highmem
+echo 10 > /sys/kernel/debug/$FAILTYPE/stacktrace-depth
 
-trap "echo 0 > /debug/$FAILTYPE/probability" SIGINT SIGTERM EXIT
+trap "echo 0 > /sys/kernel/debug/$FAILTYPE/probability" SIGINT SIGTERM EXIT
 
 echo "Injecting errors into the module $module... (interrupt to stop)"
 sleep 1000000