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This test module tries to test asynchronous driver probing by having a driver that sleeps for an extended period of time (5 secs) in its probe() method. It measures the time needed to register this driver (with device already registered) and a new device (with driver already registered). The module will fail to load if the time spent in register call is more than half the probing sleep time. As a sanity check the driver will then try to synchronously register driver and device and fail if registration takes less than half of the probing sleep time. Signed-off-by: Dmitry Torokhov <dtor@chromium.org> Reviewed-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Guenter Roeck <groeck@chromium.org> Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 lines
314 B
Plaintext
10 lines
314 B
Plaintext
config TEST_ASYNC_DRIVER_PROBE
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tristate "Build kernel module to test asynchronous driver probing"
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depends on m
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help
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Enabling this option produces a kernel module that allows
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testing asynchronous driver probing by the device core.
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The module name will be test_async_driver_probe.ko
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If unsure say N.
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