2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2020-10-28 10:43:19 -07:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2022-11-11 10:29:05 -08:00
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2019-09-23 02:02:45 -07:00
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2023-05-10 13:38:30 +08:00
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2022-11-11 10:29:04 -08:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2022-04-29 11:12:57 -07:00
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2023-05-10 13:38:31 +08:00
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2019-09-23 02:02:45 -07:00
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2022-04-29 11:12:57 -07:00
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2019-09-23 02:02:45 -07:00
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2022-04-29 11:12:57 -07:00
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2019-09-23 02:02:45 -07:00
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2023-05-10 13:38:31 +08:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2020-08-04 13:47:45 -07:00
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2021-12-17 04:49:09 +00:00
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2022-08-13 01:20:54 -03:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2020-11-23 14:57:59 -08:00
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2019-09-23 02:02:45 -07:00
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2020-11-23 14:57:59 -08:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2020-11-23 14:57:59 -08:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2022-02-07 20:20:44 +09:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2019-11-19 15:38:10 -08:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-05-13 12:31:57 -07:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-05-13 12:31:57 -07:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-11-23 14:57:59 -08:00
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2021-12-17 04:49:09 +00:00
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2020-12-15 16:22:46 -08:00
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2021-12-17 04:49:09 +00:00
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2020-12-15 16:22:46 -08:00
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2022-07-20 15:57:19 -03:00
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2020-12-15 16:22:46 -08:00
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2023-12-20 16:19:47 +01:00
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2020-12-15 16:22:46 -08:00
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2021-05-13 12:31:57 -07:00
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2020-12-15 16:22:46 -08:00
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2023-12-20 16:19:47 +01:00
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2020-12-15 16:22:46 -08:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2021-05-26 14:24:07 -07:00
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2021-12-17 04:49:09 +00:00
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2021-05-26 14:24:07 -07:00
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2021-12-17 04:49:09 +00:00
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2021-05-26 14:24:07 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2023-05-25 12:21:31 +08:00
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kunit: Add a macro to wrap a deferred action function
KUnit's deferred action API accepts a void(*)(void *) function pointer
which is called when the test is exited. However, we very frequently
want to use existing functions which accept a single pointer, but which
may not be of type void*. While this is probably dodgy enough to be on
the wrong side of the C standard, it's been often used for similar
callbacks, and gcc's -Wcast-function-type seems to ignore cases where
the only difference is the type of the argument, assuming it's
compatible (i.e., they're both pointers to data).
However, clang 16 has introduced -Wcast-function-type-strict, which no
longer permits any deviation in function pointer type. This seems to be
because it'd break CFI, which validates the type of function calls.
This rather ruins our attempts to cast functions to defer them, and
leaves us with a few options. The one we've chosen is to implement a
macro which will generate a wrapper function which accepts a void*, and
casts the argument to the appropriate type.
For example, if you were trying to wrap:
void foo_close(struct foo *handle);
you could use:
KUNIT_DEFINE_ACTION_WRAPPER(kunit_action_foo_close,
foo_close,
struct foo *);
This would create a new kunit_action_foo_close() function, of type
kunit_action_t, which could be passed into kunit_add_action() and
similar functions.
In addition to defining this macro, update KUnit and its tests to use
it.
Link: https://github.com/ClangBuiltLinux/linux/issues/1750
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-11-28 15:24:05 +08:00
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2023-05-25 12:21:31 +08:00
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kunit: Add a macro to wrap a deferred action function
KUnit's deferred action API accepts a void(*)(void *) function pointer
which is called when the test is exited. However, we very frequently
want to use existing functions which accept a single pointer, but which
may not be of type void*. While this is probably dodgy enough to be on
the wrong side of the C standard, it's been often used for similar
callbacks, and gcc's -Wcast-function-type seems to ignore cases where
the only difference is the type of the argument, assuming it's
compatible (i.e., they're both pointers to data).
However, clang 16 has introduced -Wcast-function-type-strict, which no
longer permits any deviation in function pointer type. This seems to be
because it'd break CFI, which validates the type of function calls.
This rather ruins our attempts to cast functions to defer them, and
leaves us with a few options. The one we've chosen is to implement a
macro which will generate a wrapper function which accepts a void*, and
casts the argument to the appropriate type.
For example, if you were trying to wrap:
void foo_close(struct foo *handle);
you could use:
KUNIT_DEFINE_ACTION_WRAPPER(kunit_action_foo_close,
foo_close,
struct foo *);
This would create a new kunit_action_foo_close() function, of type
kunit_action_t, which could be passed into kunit_add_action() and
similar functions.
In addition to defining this macro, update KUnit and its tests to use
it.
Link: https://github.com/ClangBuiltLinux/linux/issues/1750
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-11-28 15:24:05 +08:00
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2023-05-25 12:21:31 +08:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2024-01-10 14:39:28 -03:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2020-01-06 22:28:23 +00:00
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2021-12-17 04:49:09 +00:00
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2020-01-06 22:28:23 +00:00
|
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2021-12-17 04:49:09 +00:00
|
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2020-01-06 22:28:23 +00:00
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2021-12-17 04:49:09 +00:00
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2020-01-06 22:28:23 +00:00
|
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|
kunit: Use the static key when retrieving the current test
In order to detect if a KUnit test is running, and to access its
context, the 'kunit_test' member of the current task_struct is used.
Usually, this is accessed directly or via the kunit_fail_current_task()
function.
In order to speed up the case where no test is running, add a wrapper,
kunit_get_current_test(), which uses the static key to fail early.
Equally, Speed up kunit_fail_current_test() by using the static key.
This should make it convenient for code to call this
unconditionally in fakes or error paths, without worrying that this will
slow the code down significantly.
If CONFIG_KUNIT=n (or m), this compiles away to nothing. If
CONFIG_KUNIT=y, it will compile down to a NOP (on most architectures) if
no KUnit test is currently running.
Note that kunit_get_current_test() does not work if KUnit is built as a
module. This mirrors the existing restriction on kunit_fail_current_test().
Note that the definition of kunit_fail_current_test() still wraps an
empty, inline function if KUnit is not built-in. This is to ensure that
the printf format string __attribute__ will still work.
Also update the documentation to suggest users use the new
kunit_get_current_test() function, update the example, and to describe
the behaviour when KUnit is disabled better.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sadiya Kazi <sadiyakazi@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-11-25 16:43:05 +08:00
|
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2020-01-31 16:01:02 -08:00
|
|
|
|
kunit: Use the static key when retrieving the current test
In order to detect if a KUnit test is running, and to access its
context, the 'kunit_test' member of the current task_struct is used.
Usually, this is accessed directly or via the kunit_fail_current_task()
function.
In order to speed up the case where no test is running, add a wrapper,
kunit_get_current_test(), which uses the static key to fail early.
Equally, Speed up kunit_fail_current_test() by using the static key.
This should make it convenient for code to call this
unconditionally in fakes or error paths, without worrying that this will
slow the code down significantly.
If CONFIG_KUNIT=n (or m), this compiles away to nothing. If
CONFIG_KUNIT=y, it will compile down to a NOP (on most architectures) if
no KUnit test is currently running.
Note that kunit_get_current_test() does not work if KUnit is built as a
module. This mirrors the existing restriction on kunit_fail_current_test().
Note that the definition of kunit_fail_current_test() still wraps an
empty, inline function if KUnit is not built-in. This is to ensure that
the printf format string __attribute__ will still work.
Also update the documentation to suggest users use the new
kunit_get_current_test() function, update the example, and to describe
the behaviour when KUnit is disabled better.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sadiya Kazi <sadiyakazi@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-11-25 16:43:05 +08:00
|
|
|
|
kunit: Add "hooks" to call into KUnit when it's built as a module
KUnit has several macros and functions intended for use from non-test
code. These hooks, currently the kunit_get_current_test() and
kunit_fail_current_test() macros, didn't work when CONFIG_KUNIT=m.
In order to support this case, the required functions and static data
need to be available unconditionally, even when KUnit itself is not
built-in. The new 'hooks.c' file is therefore always included, and has
both the static key required for kunit_get_current_test(), and a table
of function pointers in struct kunit_hooks_table. This is filled in with
the real implementations by kunit_install_hooks(), which is kept in
hooks-impl.h and called when the kunit module is loaded.
This can be extended for future features which require similar
"hook" behaviour, such as static stubs, by simply adding new entries to
the struct, and the appropriate code to set them.
Fixed white-space errors during commit:
Shuah Khan <skhan@linuxfoundation.org>
Resolved merge conflicts with:
db105c37a4d6 ("kunit: Export kunit_running()")
This patch supersedes the above.
Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-01-28 15:10:07 +08:00
|
|
|
|
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|
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|
kunit: Use the static key when retrieving the current test
In order to detect if a KUnit test is running, and to access its
context, the 'kunit_test' member of the current task_struct is used.
Usually, this is accessed directly or via the kunit_fail_current_task()
function.
In order to speed up the case where no test is running, add a wrapper,
kunit_get_current_test(), which uses the static key to fail early.
Equally, Speed up kunit_fail_current_test() by using the static key.
This should make it convenient for code to call this
unconditionally in fakes or error paths, without worrying that this will
slow the code down significantly.
If CONFIG_KUNIT=n (or m), this compiles away to nothing. If
CONFIG_KUNIT=y, it will compile down to a NOP (on most architectures) if
no KUnit test is currently running.
Note that kunit_get_current_test() does not work if KUnit is built as a
module. This mirrors the existing restriction on kunit_fail_current_test().
Note that the definition of kunit_fail_current_test() still wraps an
empty, inline function if KUnit is not built-in. This is to ensure that
the printf format string __attribute__ will still work.
Also update the documentation to suggest users use the new
kunit_get_current_test() function, update the example, and to describe
the behaviour when KUnit is disabled better.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sadiya Kazi <sadiyakazi@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-11-25 16:43:05 +08:00
|
|
|
|
|
|
|
|
|
2020-01-06 22:28:23 +00:00
|
|
|
|
2021-12-17 04:49:09 +00:00
|
|
|
|
2020-01-06 22:28:23 +00:00
|
|
|
|
kunit: Use the static key when retrieving the current test
In order to detect if a KUnit test is running, and to access its
context, the 'kunit_test' member of the current task_struct is used.
Usually, this is accessed directly or via the kunit_fail_current_task()
function.
In order to speed up the case where no test is running, add a wrapper,
kunit_get_current_test(), which uses the static key to fail early.
Equally, Speed up kunit_fail_current_test() by using the static key.
This should make it convenient for code to call this
unconditionally in fakes or error paths, without worrying that this will
slow the code down significantly.
If CONFIG_KUNIT=n (or m), this compiles away to nothing. If
CONFIG_KUNIT=y, it will compile down to a NOP (on most architectures) if
no KUnit test is currently running.
Note that kunit_get_current_test() does not work if KUnit is built as a
module. This mirrors the existing restriction on kunit_fail_current_test().
Note that the definition of kunit_fail_current_test() still wraps an
empty, inline function if KUnit is not built-in. This is to ensure that
the printf format string __attribute__ will still work.
Also update the documentation to suggest users use the new
kunit_get_current_test() function, update the example, and to describe
the behaviour when KUnit is disabled better.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sadiya Kazi <sadiyakazi@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-11-25 16:43:05 +08:00
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2020-10-21 21:25:18 +02:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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kunit: Use the static key when retrieving the current test
In order to detect if a KUnit test is running, and to access its
context, the 'kunit_test' member of the current task_struct is used.
Usually, this is accessed directly or via the kunit_fail_current_task()
function.
In order to speed up the case where no test is running, add a wrapper,
kunit_get_current_test(), which uses the static key to fail early.
Equally, Speed up kunit_fail_current_test() by using the static key.
This should make it convenient for code to call this
unconditionally in fakes or error paths, without worrying that this will
slow the code down significantly.
If CONFIG_KUNIT=n (or m), this compiles away to nothing. If
CONFIG_KUNIT=y, it will compile down to a NOP (on most architectures) if
no KUnit test is currently running.
Note that kunit_get_current_test() does not work if KUnit is built as a
module. This mirrors the existing restriction on kunit_fail_current_test().
Note that the definition of kunit_fail_current_test() still wraps an
empty, inline function if KUnit is not built-in. This is to ensure that
the printf format string __attribute__ will still work.
Also update the documentation to suggest users use the new
kunit_get_current_test() function, update the example, and to describe
the behaviour when KUnit is disabled better.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sadiya Kazi <sadiyakazi@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-11-25 16:43:05 +08:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2019-09-23 02:02:45 -07:00
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2021-12-17 04:49:09 +00:00
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2020-03-26 14:25:10 +00:00
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2021-12-17 04:49:09 +00:00
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kunit: Use the static key when retrieving the current test
In order to detect if a KUnit test is running, and to access its
context, the 'kunit_test' member of the current task_struct is used.
Usually, this is accessed directly or via the kunit_fail_current_task()
function.
In order to speed up the case where no test is running, add a wrapper,
kunit_get_current_test(), which uses the static key to fail early.
Equally, Speed up kunit_fail_current_test() by using the static key.
This should make it convenient for code to call this
unconditionally in fakes or error paths, without worrying that this will
slow the code down significantly.
If CONFIG_KUNIT=n (or m), this compiles away to nothing. If
CONFIG_KUNIT=y, it will compile down to a NOP (on most architectures) if
no KUnit test is currently running.
Note that kunit_get_current_test() does not work if KUnit is built as a
module. This mirrors the existing restriction on kunit_fail_current_test().
Note that the definition of kunit_fail_current_test() still wraps an
empty, inline function if KUnit is not built-in. This is to ensure that
the printf format string __attribute__ will still work.
Also update the documentation to suggest users use the new
kunit_get_current_test() function, update the example, and to describe
the behaviour when KUnit is disabled better.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sadiya Kazi <sadiyakazi@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-11-25 16:43:05 +08:00
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2020-03-26 14:25:10 +00:00
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2021-12-17 04:49:09 +00:00
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2020-03-26 14:25:10 +00:00
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kunit: Use the static key when retrieving the current test
In order to detect if a KUnit test is running, and to access its
context, the 'kunit_test' member of the current task_struct is used.
Usually, this is accessed directly or via the kunit_fail_current_task()
function.
In order to speed up the case where no test is running, add a wrapper,
kunit_get_current_test(), which uses the static key to fail early.
Equally, Speed up kunit_fail_current_test() by using the static key.
This should make it convenient for code to call this
unconditionally in fakes or error paths, without worrying that this will
slow the code down significantly.
If CONFIG_KUNIT=n (or m), this compiles away to nothing. If
CONFIG_KUNIT=y, it will compile down to a NOP (on most architectures) if
no KUnit test is currently running.
Note that kunit_get_current_test() does not work if KUnit is built as a
module. This mirrors the existing restriction on kunit_fail_current_test().
Note that the definition of kunit_fail_current_test() still wraps an
empty, inline function if KUnit is not built-in. This is to ensure that
the printf format string __attribute__ will still work.
Also update the documentation to suggest users use the new
kunit_get_current_test() function, update the example, and to describe
the behaviour when KUnit is disabled better.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Sadiya Kazi <sadiyakazi@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-11-25 16:43:05 +08:00
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kunit: Add "hooks" to call into KUnit when it's built as a module
KUnit has several macros and functions intended for use from non-test
code. These hooks, currently the kunit_get_current_test() and
kunit_fail_current_test() macros, didn't work when CONFIG_KUNIT=m.
In order to support this case, the required functions and static data
need to be available unconditionally, even when KUnit itself is not
built-in. The new 'hooks.c' file is therefore always included, and has
both the static key required for kunit_get_current_test(), and a table
of function pointers in struct kunit_hooks_table. This is filled in with
the real implementations by kunit_install_hooks(), which is kept in
hooks-impl.h and called when the kunit module is loaded.
This can be extended for future features which require similar
"hook" behaviour, such as static stubs, by simply adding new entries to
the struct, and the appropriate code to set them.
Fixed white-space errors during commit:
Shuah Khan <skhan@linuxfoundation.org>
Resolved merge conflicts with:
db105c37a4d6 ("kunit: Export kunit_running()")
This patch supersedes the above.
Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-01-28 15:10:07 +08:00
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2023-12-15 15:39:08 +08:00
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