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On some systems, hot-plug tests could hang forever waiting for cpu and
memory to be ready to be offlined. A special hot-plug target is created
to run full range of hot-plug tests. In default mode, hot-plug tests run
in safe mode with a limited scope. In limited mode, cpu-hotplug test is
run on a single cpu as opposed to all hotplug capable cpus, and memory
hotplug test is run on 2% of hotplug capable memory instead of 10%. In
addition to the above change, cpu-hotplug is chnged to change processor
affinity to cpu 0 so it doesn't impact itself while the test runs.
Signed-off-by: Shuah Khan <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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on-off-test is a bash script and invoked from /bin/sh
This results in the following error:
./on-off-test.sh: 9: [: !=: unexpected operator
Changed Makefile to use bash instead.
Signed-off-by: Shuah Khan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The x bit can easily get lost (patch(1) loses it, for example).
Reported-by: Ramkumar Ramachandra <[email protected]>
Cc: Dave Young <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Original behavior:
bash-4.1$ make -C memory-hotplug run_tests
make: Entering directory `/home/dave/git/linux-2.6/tools/testing/selftests/memory-hotplug'
./on-off-test.sh
make: execvp: ./on-off-test.sh: Permission denied
make: *** [run_tests] Error 127
make: Leaving directory `/home/dave/git/linux-2.6/tools/testing/selftests/memory-hotplug'
After applying the patch:
bash-4.1$ make -C memory-hotplug run_tests
make: Entering directory `/home/dave/git/linux-2.6/tools/testing/selftests/memory-hotplug'
/bin/sh: ./on-off-test.sh: Permission denied
memory-hotplug selftests: [FAIL]
make: Leaving directory `/home/dave/git/linux-2.6/tools/testing/selftests/memory-hotplug'
Signed-off-by: Dave Young <[email protected]>
Reviewed-by: Pekka Enberg <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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This adds two selftests
* tools/testing/selftests/cpu-hotplug/on-off-test.sh is testing script
for CPU hotplug
1. Online all hot-pluggable CPUs
2. Offline all hot-pluggable CPUs
3. Online all hot-pluggable CPUs again
4. Exit if cpu-notifier-error-inject.ko is not available
5. Offline all hot-pluggable CPUs in preparation for testing
6. Test CPU hot-add error handling by injecting notifier errors
7. Online all hot-pluggable CPUs in preparation for testing
8. Test CPU hot-remove error handling by injecting notifier errors
* tools/testing/selftests/memory-hotplug/on-off-test.sh is doing the
similar thing for memory hotplug.
1. Online all hot-pluggable memory
2. Offline 10% of hot-pluggable memory
3. Online all hot-pluggable memory again
4. Exit if memory-notifier-error-inject.ko is not available
5. Offline 10% of hot-pluggable memory in preparation for testing
6. Test memory hot-add error handling by injecting notifier errors
7. Online all hot-pluggable memory in preparation for testing
8. Test memory hot-remove error handling by injecting notifier errors
Signed-off-by: Akinobu Mita <[email protected]>
Suggested-by: Andrew Morton <[email protected]>
Cc: Pavel Machek <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Greg KH <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Dave Jones <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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