2019-09-23 02:02:34 -07:00
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2022-01-19 18:09:19 -08:00
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2019-09-23 02:02:34 -07:00
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2020-01-06 22:28:18 +00:00
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2019-09-23 02:02:34 -07:00
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kunit: split out part of kunit_assert into a static const
This is per Linus's suggestion in [1].
The issue there is that every KUNIT_EXPECT/KUNIT_ASSERT puts a
kunit_assert object onto the stack. Normally we rely on compilers to
elide this, but when that doesn't work out, this blows up the stack
usage of kunit test functions.
We can move some data off the stack by making it static.
This change introduces a new `struct kunit_loc` to hold the file and
line number and then just passing assert_type (EXPECT or ASSERT) as an
argument.
In [1], it was suggested to also move out the format string as well, but
users could theoretically craft a format string at runtime, so we can't.
This change leaves a copy of `assert_type` in kunit_assert for now
because cleaning up all the macros to not pass it around is a bit more
involved.
Here's an example of the expanded code for KUNIT_FAIL():
if (__builtin_expect(!!(!(false)), 0)) {
static const struct kunit_loc loc = { .file = ... };
struct kunit_fail_assert __assertion = { .assert = { .type ... };
kunit_do_failed_assertion(test, &loc, KUNIT_EXPECTATION, &__assertion.assert, ...);
};
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-13 08:59:30 -08:00
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2019-09-23 02:02:34 -07:00
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2022-09-30 17:26:35 -07:00
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2019-09-23 02:02:34 -07:00
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kunit: split out part of kunit_assert into a static const
This is per Linus's suggestion in [1].
The issue there is that every KUNIT_EXPECT/KUNIT_ASSERT puts a
kunit_assert object onto the stack. Normally we rely on compilers to
elide this, but when that doesn't work out, this blows up the stack
usage of kunit test functions.
We can move some data off the stack by making it static.
This change introduces a new `struct kunit_loc` to hold the file and
line number and then just passing assert_type (EXPECT or ASSERT) as an
argument.
In [1], it was suggested to also move out the format string as well, but
users could theoretically craft a format string at runtime, so we can't.
This change leaves a copy of `assert_type` in kunit_assert for now
because cleaning up all the macros to not pass it around is a bit more
involved.
Here's an example of the expanded code for KUNIT_FAIL():
if (__builtin_expect(!!(!(false)), 0)) {
static const struct kunit_loc loc = { .file = ... };
struct kunit_fail_assert __assertion = { .assert = { .type ... };
kunit_do_failed_assertion(test, &loc, KUNIT_EXPECTATION, &__assertion.assert, ...);
};
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-13 08:59:30 -08:00
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2019-09-23 02:02:34 -07:00
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2022-01-25 13:00:09 -08:00
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2019-09-23 02:02:34 -07:00
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2022-01-25 13:00:09 -08:00
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2019-09-23 02:02:34 -07:00
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2022-01-25 13:00:09 -08:00
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2019-09-23 02:02:34 -07:00
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kunit: factor out str constants from binary assertion structs
If the compiler doesn't optimize them away, each kunit assertion (use of
KUNIT_EXPECT_EQ, etc.) can use 88 bytes of stack space in the worst and
most common case. This has led to compiler warnings and a suggestion
from Linus to move data from the structs into static const's where
possible [1].
This builds upon [2] which did so for the base struct kunit_assert type.
That only reduced sizeof(struct kunit_binary_assert) from 88 to 64.
Given these are by far the most commonly used asserts, this patch
factors out the textual representations of the operands and comparator
into another static const, saving 16 more bytes.
In detail, KUNIT_EXPECT_EQ(test, 2 + 2, 5) yields the following struct
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.operation = "==",
.left_text = "2 + 2",
.left_value = 4,
.right_text = "5",
.right_value = 5,
}
After this change
static const struct kunit_binary_assert_text __text = {
.operation = "==",
.left_text = "2 + 2",
.right_text = "5",
};
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.text = &__text,
.left_value = 4,
.right_value = 5,
}
This also DRYs the code a bit more since these str fields were repeated
for the string and pointer versions of kunit_binary_assert.
Note: we could name the kunit_binary_assert_text fields left/right
instead of left_text/right_text. But that would require changing the
macros a bit since they have args called "left" and "right" which would
be substituted in `.left = #left` as `.2 + 2 = \"2 + 2\"`.
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
[2] https://lore.kernel.org/linux-kselftest/20220113165931.451305-6-dlatypov@google.com/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-25 13:00:11 -08:00
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2019-09-23 02:02:34 -07:00
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kunit: factor out str constants from binary assertion structs
If the compiler doesn't optimize them away, each kunit assertion (use of
KUNIT_EXPECT_EQ, etc.) can use 88 bytes of stack space in the worst and
most common case. This has led to compiler warnings and a suggestion
from Linus to move data from the structs into static const's where
possible [1].
This builds upon [2] which did so for the base struct kunit_assert type.
That only reduced sizeof(struct kunit_binary_assert) from 88 to 64.
Given these are by far the most commonly used asserts, this patch
factors out the textual representations of the operands and comparator
into another static const, saving 16 more bytes.
In detail, KUNIT_EXPECT_EQ(test, 2 + 2, 5) yields the following struct
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.operation = "==",
.left_text = "2 + 2",
.left_value = 4,
.right_text = "5",
.right_value = 5,
}
After this change
static const struct kunit_binary_assert_text __text = {
.operation = "==",
.left_text = "2 + 2",
.right_text = "5",
};
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.text = &__text,
.left_value = 4,
.right_value = 5,
}
This also DRYs the code a bit more since these str fields were repeated
for the string and pointer versions of kunit_binary_assert.
Note: we could name the kunit_binary_assert_text fields left/right
instead of left_text/right_text. But that would require changing the
macros a bit since they have args called "left" and "right" which would
be substituted in `.left = #left` as `.2 + 2 = \"2 + 2\"`.
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
[2] https://lore.kernel.org/linux-kselftest/20220113165931.451305-6-dlatypov@google.com/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-25 13:00:11 -08:00
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2019-09-23 02:02:34 -07:00
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kunit: factor out str constants from binary assertion structs
If the compiler doesn't optimize them away, each kunit assertion (use of
KUNIT_EXPECT_EQ, etc.) can use 88 bytes of stack space in the worst and
most common case. This has led to compiler warnings and a suggestion
from Linus to move data from the structs into static const's where
possible [1].
This builds upon [2] which did so for the base struct kunit_assert type.
That only reduced sizeof(struct kunit_binary_assert) from 88 to 64.
Given these are by far the most commonly used asserts, this patch
factors out the textual representations of the operands and comparator
into another static const, saving 16 more bytes.
In detail, KUNIT_EXPECT_EQ(test, 2 + 2, 5) yields the following struct
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.operation = "==",
.left_text = "2 + 2",
.left_value = 4,
.right_text = "5",
.right_value = 5,
}
After this change
static const struct kunit_binary_assert_text __text = {
.operation = "==",
.left_text = "2 + 2",
.right_text = "5",
};
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.text = &__text,
.left_value = 4,
.right_value = 5,
}
This also DRYs the code a bit more since these str fields were repeated
for the string and pointer versions of kunit_binary_assert.
Note: we could name the kunit_binary_assert_text fields left/right
instead of left_text/right_text. But that would require changing the
macros a bit since they have args called "left" and "right" which would
be substituted in `.left = #left` as `.2 + 2 = \"2 + 2\"`.
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
[2] https://lore.kernel.org/linux-kselftest/20220113165931.451305-6-dlatypov@google.com/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-25 13:00:11 -08:00
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2019-09-23 02:02:34 -07:00
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2022-01-25 13:00:09 -08:00
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2019-09-23 02:02:34 -07:00
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kunit: factor out str constants from binary assertion structs
If the compiler doesn't optimize them away, each kunit assertion (use of
KUNIT_EXPECT_EQ, etc.) can use 88 bytes of stack space in the worst and
most common case. This has led to compiler warnings and a suggestion
from Linus to move data from the structs into static const's where
possible [1].
This builds upon [2] which did so for the base struct kunit_assert type.
That only reduced sizeof(struct kunit_binary_assert) from 88 to 64.
Given these are by far the most commonly used asserts, this patch
factors out the textual representations of the operands and comparator
into another static const, saving 16 more bytes.
In detail, KUNIT_EXPECT_EQ(test, 2 + 2, 5) yields the following struct
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.operation = "==",
.left_text = "2 + 2",
.left_value = 4,
.right_text = "5",
.right_value = 5,
}
After this change
static const struct kunit_binary_assert_text __text = {
.operation = "==",
.left_text = "2 + 2",
.right_text = "5",
};
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.text = &__text,
.left_value = 4,
.right_value = 5,
}
This also DRYs the code a bit more since these str fields were repeated
for the string and pointer versions of kunit_binary_assert.
Note: we could name the kunit_binary_assert_text fields left/right
instead of left_text/right_text. But that would require changing the
macros a bit since they have args called "left" and "right" which would
be substituted in `.left = #left` as `.2 + 2 = \"2 + 2\"`.
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
[2] https://lore.kernel.org/linux-kselftest/20220113165931.451305-6-dlatypov@google.com/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-25 13:00:11 -08:00
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2019-09-23 02:02:34 -07:00
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kunit: factor out str constants from binary assertion structs
If the compiler doesn't optimize them away, each kunit assertion (use of
KUNIT_EXPECT_EQ, etc.) can use 88 bytes of stack space in the worst and
most common case. This has led to compiler warnings and a suggestion
from Linus to move data from the structs into static const's where
possible [1].
This builds upon [2] which did so for the base struct kunit_assert type.
That only reduced sizeof(struct kunit_binary_assert) from 88 to 64.
Given these are by far the most commonly used asserts, this patch
factors out the textual representations of the operands and comparator
into another static const, saving 16 more bytes.
In detail, KUNIT_EXPECT_EQ(test, 2 + 2, 5) yields the following struct
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.operation = "==",
.left_text = "2 + 2",
.left_value = 4,
.right_text = "5",
.right_value = 5,
}
After this change
static const struct kunit_binary_assert_text __text = {
.operation = "==",
.left_text = "2 + 2",
.right_text = "5",
};
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.text = &__text,
.left_value = 4,
.right_value = 5,
}
This also DRYs the code a bit more since these str fields were repeated
for the string and pointer versions of kunit_binary_assert.
Note: we could name the kunit_binary_assert_text fields left/right
instead of left_text/right_text. But that would require changing the
macros a bit since they have args called "left" and "right" which would
be substituted in `.left = #left` as `.2 + 2 = \"2 + 2\"`.
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
[2] https://lore.kernel.org/linux-kselftest/20220113165931.451305-6-dlatypov@google.com/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-25 13:00:11 -08:00
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2019-09-23 02:02:34 -07:00
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2022-01-25 13:00:09 -08:00
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2019-09-23 02:02:34 -07:00
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kunit: factor out str constants from binary assertion structs
If the compiler doesn't optimize them away, each kunit assertion (use of
KUNIT_EXPECT_EQ, etc.) can use 88 bytes of stack space in the worst and
most common case. This has led to compiler warnings and a suggestion
from Linus to move data from the structs into static const's where
possible [1].
This builds upon [2] which did so for the base struct kunit_assert type.
That only reduced sizeof(struct kunit_binary_assert) from 88 to 64.
Given these are by far the most commonly used asserts, this patch
factors out the textual representations of the operands and comparator
into another static const, saving 16 more bytes.
In detail, KUNIT_EXPECT_EQ(test, 2 + 2, 5) yields the following struct
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.operation = "==",
.left_text = "2 + 2",
.left_value = 4,
.right_text = "5",
.right_value = 5,
}
After this change
static const struct kunit_binary_assert_text __text = {
.operation = "==",
.left_text = "2 + 2",
.right_text = "5",
};
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.text = &__text,
.left_value = 4,
.right_value = 5,
}
This also DRYs the code a bit more since these str fields were repeated
for the string and pointer versions of kunit_binary_assert.
Note: we could name the kunit_binary_assert_text fields left/right
instead of left_text/right_text. But that would require changing the
macros a bit since they have args called "left" and "right" which would
be substituted in `.left = #left` as `.2 + 2 = \"2 + 2\"`.
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
[2] https://lore.kernel.org/linux-kselftest/20220113165931.451305-6-dlatypov@google.com/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-25 13:00:11 -08:00
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2019-09-23 02:02:34 -07:00
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kunit: factor out str constants from binary assertion structs
If the compiler doesn't optimize them away, each kunit assertion (use of
KUNIT_EXPECT_EQ, etc.) can use 88 bytes of stack space in the worst and
most common case. This has led to compiler warnings and a suggestion
from Linus to move data from the structs into static const's where
possible [1].
This builds upon [2] which did so for the base struct kunit_assert type.
That only reduced sizeof(struct kunit_binary_assert) from 88 to 64.
Given these are by far the most commonly used asserts, this patch
factors out the textual representations of the operands and comparator
into another static const, saving 16 more bytes.
In detail, KUNIT_EXPECT_EQ(test, 2 + 2, 5) yields the following struct
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.operation = "==",
.left_text = "2 + 2",
.left_value = 4,
.right_text = "5",
.right_value = 5,
}
After this change
static const struct kunit_binary_assert_text __text = {
.operation = "==",
.left_text = "2 + 2",
.right_text = "5",
};
(struct kunit_binary_assert) {
.assert = <struct kunit_assert>,
.text = &__text,
.left_value = 4,
.right_value = 5,
}
This also DRYs the code a bit more since these str fields were repeated
for the string and pointer versions of kunit_binary_assert.
Note: we could name the kunit_binary_assert_text fields left/right
instead of left_text/right_text. But that would require changing the
macros a bit since they have args called "left" and "right" which would
be substituted in `.left = #left` as `.2 + 2 = \"2 + 2\"`.
[1] https://groups.google.com/g/kunit-dev/c/i3fZXgvBrfA/m/VULQg1z6BAAJ
[2] https://lore.kernel.org/linux-kselftest/20220113165931.451305-6-dlatypov@google.com/
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-01-25 13:00:11 -08:00
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2019-09-23 02:02:34 -07:00
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2022-01-25 13:00:09 -08:00
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2019-09-23 02:02:34 -07:00
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kunit: Introduce KUNIT_EXPECT_MEMEQ and KUNIT_EXPECT_MEMNEQ macros
Currently, in order to compare memory blocks in KUnit, the KUNIT_EXPECT_EQ
or KUNIT_EXPECT_FALSE macros are used in conjunction with the memcmp
function, such as:
KUNIT_EXPECT_EQ(test, memcmp(foo, bar, size), 0);
Although this usage produces correct results for the test cases, when
the expectation fails, the error message is not very helpful,
indicating only the return of the memcmp function.
Therefore, create a new set of macros KUNIT_EXPECT_MEMEQ and
KUNIT_EXPECT_MEMNEQ that compare memory blocks until a specified size.
In case of expectation failure, those macros print the hex dump of the
memory blocks, making it easier to debug test failures for memory blocks.
That said, the expectation
KUNIT_EXPECT_EQ(test, memcmp(foo, bar, size), 0);
would translate to the expectation
KUNIT_EXPECT_MEMEQ(test, foo, bar, size);
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-25 20:10:41 -03:00
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2019-09-23 02:02:34 -07:00
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