Add the following 2 scenarios to the allocinfo ioctl kselftest:
1. Validate size based filtering
2. Validate lineno based filtering
The first test uses "do_init_module" as the candidate function for the
test. This is because the associated site will only allocate memory when
a kernel module is loaded. The return value of get_content_id() changes
every time modules are loaded or unloaded. Hence, as long as
get_content_id() values at the start and the end of the test are the same,
the memory allocated by the do_init_module call site should also remain
the same. Consequently, the test can assume consistency between the value
returned by the ioctl and the procfs resulting in less flakiness.
Link: https://lore.kernel.org/e5171926b48802531284c1cb5f04734017141341.1783532853.git.abhishekbapat@google.com
Signed-off-by: Abhishek Bapat <abhishekbapat@google.com>
Tested-by: Hao Ge <hao.ge@linux.dev>
Acked-by: Hao Ge <hao.ge@linux.dev>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Sourav Panda <souravpanda@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
923690d809