From: Brendan Higgins <brendanhiggins@google.com>
To: frowand.list@gmail.com, gregkh@linuxfoundation.org,
jpoimboe@redhat.com, keescook@google.com,
kieran.bingham@ideasonboard.com, mcgrof@kernel.org,
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shuah@kernel.org, tytso@mit.edu, yamada.masahiro@socionext.com
Cc: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org,
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richard@nod.at, rientjes@google.com, rostedt@goodmis.org,
wfg@linux.intel.com, Brendan Higgins <brendanhiggins@google.com>
Subject: [PATCH v14 04/18] kunit: test: add assertion printing library
Date: Tue, 20 Aug 2019 16:20:32 -0700 [thread overview]
Message-ID: <20190820232046.50175-5-brendanhiggins@google.com> (raw)
In-Reply-To: <20190820232046.50175-1-brendanhiggins@google.com>
Add `struct kunit_assert` and friends which provide a structured way to
capture data from an expectation or an assertion (introduced later in
the series) so that it may be printed out in the event of a failure.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
---
include/kunit/assert.h | 356 +++++++++++++++++++++++++++++++++++++++++
kunit/Makefile | 3 +-
kunit/assert.c | 141 ++++++++++++++++
3 files changed, 499 insertions(+), 1 deletion(-)
create mode 100644 include/kunit/assert.h
create mode 100644 kunit/assert.c
diff --git a/include/kunit/assert.h b/include/kunit/assert.h
new file mode 100644
index 0000000000000..db6a0fca09b49
--- /dev/null
+++ b/include/kunit/assert.h
@@ -0,0 +1,356 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Assertion and expectation serialization API.
+ *
+ * Copyright (C) 2019, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+
+#ifndef _KUNIT_ASSERT_H
+#define _KUNIT_ASSERT_H
+
+#include <kunit/string-stream.h>
+#include <linux/err.h>
+
+struct kunit;
+
+/**
+ * enum kunit_assert_type - Type of expectation/assertion.
+ * @KUNIT_ASSERTION: Used to denote that a kunit_assert represents an assertion.
+ * @KUNIT_EXPECTATION: Denotes that a kunit_assert represents an expectation.
+ *
+ * Used in conjunction with a &struct kunit_assert to denote whether it
+ * represents an expectation or an assertion.
+ */
+enum kunit_assert_type {
+ KUNIT_ASSERTION,
+ KUNIT_EXPECTATION,
+};
+
+/**
+ * struct kunit_assert - Data for printing a failed assertion or expectation.
+ * @test: the test case this expectation/assertion is associated with.
+ * @type: the type (either an expectation or an assertion) of this kunit_assert.
+ * @line: the source code line number that the expectation/assertion is at.
+ * @file: the file path of the source file that the expectation/assertion is in.
+ * @message: an optional message to provide additional context.
+ * @format: a function which formats the data in this kunit_assert to a string.
+ *
+ * Represents a failed expectation/assertion. Contains all the data necessary to
+ * format a string to a user reporting the failure.
+ */
+struct kunit_assert {
+ struct kunit *test;
+ enum kunit_assert_type type;
+ int line;
+ const char *file;
+ struct va_format message;
+ void (*format)(const struct kunit_assert *assert,
+ struct string_stream *stream);
+};
+
+/**
+ * KUNIT_INIT_VA_FMT_NULL - Default initializer for struct va_format.
+ *
+ * Used inside a struct initialization block to initialize struct va_format to
+ * default values where fmt and va are null.
+ */
+#define KUNIT_INIT_VA_FMT_NULL { .fmt = NULL, .va = NULL }
+
+/**
+ * KUNIT_INIT_ASSERT_STRUCT() - Initializer for a &struct kunit_assert.
+ * @kunit: The test case that this expectation/assertion is associated with.
+ * @assert_type: The type (assertion or expectation) of this kunit_assert.
+ * @fmt: The formatting function which builds a string out of this kunit_assert.
+ *
+ * The base initializer for a &struct kunit_assert.
+ */
+#define KUNIT_INIT_ASSERT_STRUCT(kunit, assert_type, fmt) { \
+ .test = kunit, \
+ .type = assert_type, \
+ .file = __FILE__, \
+ .line = __LINE__, \
+ .message = KUNIT_INIT_VA_FMT_NULL, \
+ .format = fmt \
+}
+
+void kunit_base_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream);
+
+void kunit_assert_print_msg(const struct kunit_assert *assert,
+ struct string_stream *stream);
+
+/**
+ * struct kunit_fail_assert - Represents a plain fail expectation/assertion.
+ * @assert: The parent of this type.
+ *
+ * Represents a simple KUNIT_FAIL/KUNIT_ASSERT_FAILURE that always fails.
+ */
+struct kunit_fail_assert {
+ struct kunit_assert assert;
+};
+
+void kunit_fail_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream);
+
+/**
+ * KUNIT_INIT_FAIL_ASSERT_STRUCT() - Initializer for &struct kunit_fail_assert.
+ * @test: The test case that this expectation/assertion is associated with.
+ * @type: The type (assertion or expectation) of this kunit_assert.
+ *
+ * Initializes a &struct kunit_fail_assert. Intended to be used in
+ * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
+ */
+#define KUNIT_INIT_FAIL_ASSERT_STRUCT(test, type) { \
+ .assert = KUNIT_INIT_ASSERT_STRUCT(test, \
+ type, \
+ kunit_fail_assert_format) \
+}
+
+/**
+ * struct kunit_unary_assert - Represents a KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE}
+ * @assert: The parent of this type.
+ * @condition: A string representation of a conditional expression.
+ * @expected_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise.
+ *
+ * Represents a simple expectation or assertion that simply asserts something is
+ * true or false. In other words, represents the expectations:
+ * KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE}
+ */
+struct kunit_unary_assert {
+ struct kunit_assert assert;
+ const char *condition;
+ bool expected_true;
+};
+
+void kunit_unary_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream);
+
+/**
+ * KUNIT_INIT_UNARY_ASSERT_STRUCT() - Initializes &struct kunit_unary_assert.
+ * @test: The test case that this expectation/assertion is associated with.
+ * @type: The type (assertion or expectation) of this kunit_assert.
+ * @cond: A string representation of the expression asserted true or false.
+ * @expect_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise.
+ *
+ * Initializes a &struct kunit_unary_assert. Intended to be used in
+ * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
+ */
+#define KUNIT_INIT_UNARY_ASSERT_STRUCT(test, type, cond, expect_true) { \
+ .assert = KUNIT_INIT_ASSERT_STRUCT(test, \
+ type, \
+ kunit_unary_assert_format), \
+ .condition = cond, \
+ .expected_true = expect_true \
+}
+
+/**
+ * struct kunit_ptr_not_err_assert - An expectation/assertion that a pointer is
+ * not NULL and not a -errno.
+ * @assert: The parent of this type.
+ * @text: A string representation of the expression passed to the expectation.
+ * @value: The actual evaluated pointer value of the expression.
+ *
+ * Represents an expectation/assertion that a pointer is not null and is does
+ * not contain a -errno. (See IS_ERR_OR_NULL().)
+ */
+struct kunit_ptr_not_err_assert {
+ struct kunit_assert assert;
+ const char *text;
+ const void *value;
+};
+
+void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream);
+
+/**
+ * KUNIT_INIT_PTR_NOT_ERR_ASSERT_STRUCT() - Initializes a
+ * &struct kunit_ptr_not_err_assert.
+ * @test: The test case that this expectation/assertion is associated with.
+ * @type: The type (assertion or expectation) of this kunit_assert.
+ * @txt: A string representation of the expression passed to the expectation.
+ * @val: The actual evaluated pointer value of the expression.
+ *
+ * Initializes a &struct kunit_ptr_not_err_assert. Intended to be used in
+ * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
+ */
+#define KUNIT_INIT_PTR_NOT_ERR_STRUCT(test, type, txt, val) { \
+ .assert = KUNIT_INIT_ASSERT_STRUCT(test, \
+ type, \
+ kunit_ptr_not_err_assert_format), \
+ .text = txt, \
+ .value = val \
+}
+
+/**
+ * struct kunit_binary_assert - An expectation/assertion that compares two
+ * non-pointer values (for example, KUNIT_EXPECT_EQ(test, 1 + 1, 2)).
+ * @assert: The parent of this type.
+ * @operation: A string representation of the comparison operator (e.g. "==").
+ * @left_text: A string representation of the expression in the left slot.
+ * @left_value: The actual evaluated value of the expression in the left slot.
+ * @right_text: A string representation of the expression in the right slot.
+ * @right_value: The actual evaluated value of the expression in the right slot.
+ *
+ * Represents an expectation/assertion that compares two non-pointer values. For
+ * example, to expect that 1 + 1 == 2, you can use the expectation
+ * KUNIT_EXPECT_EQ(test, 1 + 1, 2);
+ */
+struct kunit_binary_assert {
+ struct kunit_assert assert;
+ const char *operation;
+ const char *left_text;
+ long long left_value;
+ const char *right_text;
+ long long right_value;
+};
+
+void kunit_binary_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream);
+
+/**
+ * KUNIT_INIT_BINARY_ASSERT_STRUCT() - Initializes a
+ * &struct kunit_binary_assert.
+ * @test: The test case that this expectation/assertion is associated with.
+ * @type: The type (assertion or expectation) of this kunit_assert.
+ * @op_str: A string representation of the comparison operator (e.g. "==").
+ * @left_str: A string representation of the expression in the left slot.
+ * @left_val: The actual evaluated value of the expression in the left slot.
+ * @right_str: A string representation of the expression in the right slot.
+ * @right_val: The actual evaluated value of the expression in the right slot.
+ *
+ * Initializes a &struct kunit_binary_assert. Intended to be used in
+ * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
+ */
+#define KUNIT_INIT_BINARY_ASSERT_STRUCT(test, \
+ type, \
+ op_str, \
+ left_str, \
+ left_val, \
+ right_str, \
+ right_val) { \
+ .assert = KUNIT_INIT_ASSERT_STRUCT(test, \
+ type, \
+ kunit_binary_assert_format), \
+ .operation = op_str, \
+ .left_text = left_str, \
+ .left_value = left_val, \
+ .right_text = right_str, \
+ .right_value = right_val \
+}
+
+/**
+ * struct kunit_binary_ptr_assert - An expectation/assertion that compares two
+ * pointer values (for example, KUNIT_EXPECT_PTR_EQ(test, foo, bar)).
+ * @assert: The parent of this type.
+ * @operation: A string representation of the comparison operator (e.g. "==").
+ * @left_text: A string representation of the expression in the left slot.
+ * @left_value: The actual evaluated value of the expression in the left slot.
+ * @right_text: A string representation of the expression in the right slot.
+ * @right_value: The actual evaluated value of the expression in the right slot.
+ *
+ * Represents an expectation/assertion that compares two pointer values. For
+ * example, to expect that foo and bar point to the same thing, you can use the
+ * expectation KUNIT_EXPECT_PTR_EQ(test, foo, bar);
+ */
+struct kunit_binary_ptr_assert {
+ struct kunit_assert assert;
+ const char *operation;
+ const char *left_text;
+ const void *left_value;
+ const char *right_text;
+ const void *right_value;
+};
+
+void kunit_binary_ptr_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream);
+
+/**
+ * KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT() - Initializes a
+ * &struct kunit_binary_ptr_assert.
+ * @test: The test case that this expectation/assertion is associated with.
+ * @type: The type (assertion or expectation) of this kunit_assert.
+ * @op_str: A string representation of the comparison operator (e.g. "==").
+ * @left_str: A string representation of the expression in the left slot.
+ * @left_val: The actual evaluated value of the expression in the left slot.
+ * @right_str: A string representation of the expression in the right slot.
+ * @right_val: The actual evaluated value of the expression in the right slot.
+ *
+ * Initializes a &struct kunit_binary_ptr_assert. Intended to be used in
+ * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
+ */
+#define KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT(test, \
+ type, \
+ op_str, \
+ left_str, \
+ left_val, \
+ right_str, \
+ right_val) { \
+ .assert = KUNIT_INIT_ASSERT_STRUCT(test, \
+ type, \
+ kunit_binary_ptr_assert_format), \
+ .operation = op_str, \
+ .left_text = left_str, \
+ .left_value = left_val, \
+ .right_text = right_str, \
+ .right_value = right_val \
+}
+
+/**
+ * struct kunit_binary_str_assert - An expectation/assertion that compares two
+ * string values (for example, KUNIT_EXPECT_STREQ(test, foo, "bar")).
+ * @assert: The parent of this type.
+ * @operation: A string representation of the comparison operator (e.g. "==").
+ * @left_text: A string representation of the expression in the left slot.
+ * @left_value: The actual evaluated value of the expression in the left slot.
+ * @right_text: A string representation of the expression in the right slot.
+ * @right_value: The actual evaluated value of the expression in the right slot.
+ *
+ * Represents an expectation/assertion that compares two string values. For
+ * example, to expect that the string in foo is equal to "bar", you can use the
+ * expectation KUNIT_EXPECT_STREQ(test, foo, "bar");
+ */
+struct kunit_binary_str_assert {
+ struct kunit_assert assert;
+ const char *operation;
+ const char *left_text;
+ const char *left_value;
+ const char *right_text;
+ const char *right_value;
+};
+
+void kunit_binary_str_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream);
+
+/**
+ * KUNIT_INIT_BINARY_STR_ASSERT_STRUCT() - Initializes a
+ * &struct kunit_binary_str_assert.
+ * @test: The test case that this expectation/assertion is associated with.
+ * @type: The type (assertion or expectation) of this kunit_assert.
+ * @op_str: A string representation of the comparison operator (e.g. "==").
+ * @left_str: A string representation of the expression in the left slot.
+ * @left_val: The actual evaluated value of the expression in the left slot.
+ * @right_str: A string representation of the expression in the right slot.
+ * @right_val: The actual evaluated value of the expression in the right slot.
+ *
+ * Initializes a &struct kunit_binary_str_assert. Intended to be used in
+ * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
+ */
+#define KUNIT_INIT_BINARY_STR_ASSERT_STRUCT(test, \
+ type, \
+ op_str, \
+ left_str, \
+ left_val, \
+ right_str, \
+ right_val) { \
+ .assert = KUNIT_INIT_ASSERT_STRUCT(test, \
+ type, \
+ kunit_binary_str_assert_format), \
+ .operation = op_str, \
+ .left_text = left_str, \
+ .left_value = left_val, \
+ .right_text = right_str, \
+ .right_value = right_val \
+}
+
+#endif /* _KUNIT_ASSERT_H */
diff --git a/kunit/Makefile b/kunit/Makefile
index 275b565a0e81f..6dcbe309036b8 100644
--- a/kunit/Makefile
+++ b/kunit/Makefile
@@ -1,2 +1,3 @@
obj-$(CONFIG_KUNIT) += test.o \
- string-stream.o
+ string-stream.o \
+ assert.o
diff --git a/kunit/assert.c b/kunit/assert.c
new file mode 100644
index 0000000000000..86013d4cf891c
--- /dev/null
+++ b/kunit/assert.c
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Assertion and expectation serialization API.
+ *
+ * Copyright (C) 2019, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+#include <kunit/assert.h>
+
+void kunit_base_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream)
+{
+ const char *expect_or_assert = NULL;
+
+ switch (assert->type) {
+ case KUNIT_EXPECTATION:
+ expect_or_assert = "EXPECTATION";
+ break;
+ case KUNIT_ASSERTION:
+ expect_or_assert = "ASSERTION";
+ break;
+ }
+
+ string_stream_add(stream, "%s FAILED at %s:%d\n",
+ expect_or_assert, assert->file, assert->line);
+}
+
+void kunit_assert_print_msg(const struct kunit_assert *assert,
+ struct string_stream *stream)
+{
+ if (assert->message.fmt)
+ string_stream_add(stream, "\n%pV", &assert->message);
+}
+
+void kunit_fail_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream)
+{
+ kunit_base_assert_format(assert, stream);
+ string_stream_add(stream, "%pV", &assert->message);
+}
+
+void kunit_unary_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream)
+{
+ struct kunit_unary_assert *unary_assert = container_of(
+ assert, struct kunit_unary_assert, assert);
+
+ kunit_base_assert_format(assert, stream);
+ if (unary_assert->expected_true)
+ string_stream_add(stream,
+ "\tExpected %s to be true, but is false\n",
+ unary_assert->condition);
+ else
+ string_stream_add(stream,
+ "\tExpected %s to be false, but is true\n",
+ unary_assert->condition);
+ kunit_assert_print_msg(assert, stream);
+}
+
+void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream)
+{
+ struct kunit_ptr_not_err_assert *ptr_assert = container_of(
+ assert, struct kunit_ptr_not_err_assert, assert);
+
+ kunit_base_assert_format(assert, stream);
+ if (!ptr_assert->value) {
+ string_stream_add(stream,
+ "\tExpected %s is not null, but is\n",
+ ptr_assert->text);
+ } else if (IS_ERR(ptr_assert->value)) {
+ string_stream_add(stream,
+ "\tExpected %s is not error, but is: %ld\n",
+ ptr_assert->text,
+ PTR_ERR(ptr_assert->value));
+ }
+ kunit_assert_print_msg(assert, stream);
+}
+
+void kunit_binary_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream)
+{
+ struct kunit_binary_assert *binary_assert = container_of(
+ assert, struct kunit_binary_assert, assert);
+
+ kunit_base_assert_format(assert, stream);
+ string_stream_add(stream,
+ "\tExpected %s %s %s, but\n",
+ binary_assert->left_text,
+ binary_assert->operation,
+ binary_assert->right_text);
+ string_stream_add(stream, "\t\t%s == %lld\n",
+ binary_assert->left_text,
+ binary_assert->left_value);
+ string_stream_add(stream, "\t\t%s == %lld",
+ binary_assert->right_text,
+ binary_assert->right_value);
+ kunit_assert_print_msg(assert, stream);
+}
+
+void kunit_binary_ptr_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream)
+{
+ struct kunit_binary_ptr_assert *binary_assert = container_of(
+ assert, struct kunit_binary_ptr_assert, assert);
+
+ kunit_base_assert_format(assert, stream);
+ string_stream_add(stream,
+ "\tExpected %s %s %s, but\n",
+ binary_assert->left_text,
+ binary_assert->operation,
+ binary_assert->right_text);
+ string_stream_add(stream, "\t\t%s == %pK\n",
+ binary_assert->left_text,
+ binary_assert->left_value);
+ string_stream_add(stream, "\t\t%s == %pK",
+ binary_assert->right_text,
+ binary_assert->right_value);
+ kunit_assert_print_msg(assert, stream);
+}
+
+void kunit_binary_str_assert_format(const struct kunit_assert *assert,
+ struct string_stream *stream)
+{
+ struct kunit_binary_str_assert *binary_assert = container_of(
+ assert, struct kunit_binary_str_assert, assert);
+
+ kunit_base_assert_format(assert, stream);
+ string_stream_add(stream,
+ "\tExpected %s %s %s, but\n",
+ binary_assert->left_text,
+ binary_assert->operation,
+ binary_assert->right_text);
+ string_stream_add(stream, "\t\t%s == %s\n",
+ binary_assert->left_text,
+ binary_assert->left_value);
+ string_stream_add(stream, "\t\t%s == %s",
+ binary_assert->right_text,
+ binary_assert->right_value);
+ kunit_assert_print_msg(assert, stream);
+}
--
2.23.0.rc1.153.gdeed80330f-goog
next prev parent reply other threads:[~2019-08-20 23:21 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 23:20 [PATCH v14 00/18] kunit: introduce KUnit, the Linux kernel unit testing framework Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 01/18] kunit: test: add KUnit test runner core Brendan Higgins
2019-08-23 15:33 ` shuah
2019-08-23 16:48 ` Brendan Higgins
2019-08-23 17:05 ` shuah
2019-08-23 17:27 ` Brendan Higgins
2019-08-23 17:34 ` shuah
2019-08-23 17:54 ` Brendan Higgins
2019-08-23 18:32 ` shuah
2019-08-23 18:56 ` Brendan Higgins
2019-08-23 19:04 ` shuah
2019-08-23 19:20 ` Brendan Higgins
2019-08-23 19:43 ` shuah
2019-08-20 23:20 ` [PATCH v14 02/18] kunit: test: add test resource management API Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 03/18] kunit: test: add string_stream a std::stream like string builder Brendan Higgins
2019-08-20 23:20 ` Brendan Higgins [this message]
2019-08-20 23:20 ` [PATCH v14 05/18] kunit: test: add the concept of expectations Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 06/18] kbuild: enable building KUnit Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 07/18] kunit: test: add initial tests Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 08/18] objtool: add kunit_try_catch_throw to the noreturn list Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 09/18] kunit: test: add support for test abort Brendan Higgins
2019-08-23 15:36 ` shuah
2019-08-23 16:56 ` Brendan Higgins
2019-08-23 17:07 ` shuah
2019-08-23 17:29 ` Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 10/18] kunit: test: add tests for kunit " Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 11/18] kunit: test: add the concept of assertions Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 12/18] kunit: test: add tests for KUnit managed resources Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 13/18] kunit: tool: add Python wrappers for running KUnit tests Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 14/18] kunit: defconfig: add defconfigs for building " Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 15/18] Documentation: kunit: add documentation for KUnit Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 16/18] MAINTAINERS: add entry for KUnit the unit testing framework Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 17/18] kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec() Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 18/18] MAINTAINERS: add proc sysctl KUnit test to PROC SYSCTL section Brendan Higgins
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