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| author | Dmitry Torokhov <dtor@chromium.org> | 2016-09-29 18:13:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-10 19:28:16 +0300 |
| commit | 79543cf2b18ea4a35f8864849d7ad8882ea8a23d (patch) | |
| tree | 1a13abe673b27f0eaa3267022a0a4a7805fee790 /drivers/base/test/Kconfig | |
| parent | 6751667a29d6fd64afb9ce30567ad616b68ed789 (diff) | |
| download | linux-79543cf2b18ea4a35f8864849d7ad8882ea8a23d.tar.xz | |
driver-core: add test module for asynchronous probing
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>
Diffstat (limited to 'drivers/base/test/Kconfig')
| -rw-r--r-- | drivers/base/test/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/base/test/Kconfig b/drivers/base/test/Kconfig new file mode 100644 index 000000000000..9aa0d45a60db --- /dev/null +++ b/drivers/base/test/Kconfig @@ -0,0 +1,9 @@ +config TEST_ASYNC_DRIVER_PROBE + tristate "Build kernel module to test asynchronous driver probing" + depends on m + help + Enabling this option produces a kernel module that allows + testing asynchronous driver probing by the device core. + The module name will be test_async_driver_probe.ko + + If unsure say N. |