| Message ID | 1579805221-31905-2-git-send-email-alan.maguire@oracle.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | kunit: add debugfs representation to show results/run tests | expand |
Sorry for taking so long to get to this. It's been a busy couple of weeks. On Thu, Jan 23, 2020 at 10:47 AM Alan Maguire <alan.maguire@oracle.com> wrote: > > add debugfs support for displaying kunit test suite results; this is > especially useful for module-loaded tests to allow disentangling of > test result display from other dmesg events. > > Signed-off-by: Alan Maguire <alan.maguire@oracle.com> > --- > include/kunit/test.h | 21 ++++++++--- > lib/kunit/Makefile | 3 +- > lib/kunit/debugfs.c | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++ > lib/kunit/debugfs.h | 16 ++++++++ > lib/kunit/test.c | 85 ++++++++++++++++++++++++++++++----------- > 5 files changed, 202 insertions(+), 27 deletions(-) > create mode 100644 lib/kunit/debugfs.c > create mode 100644 lib/kunit/debugfs.h > > diff --git a/include/kunit/test.h b/include/kunit/test.h > index 2dfb550..37219b8a 100644 > --- a/include/kunit/test.h > +++ b/include/kunit/test.h > @@ -125,6 +125,8 @@ struct kunit_case { > bool success; > }; > > +#define kunit_status2str(status) (status ? "ok" : "not ok") nit: I would prefer kunit_status_to_string. Also, I would prefer this as a static inline function. > /** > * KUNIT_CASE - A helper for creating a &struct kunit_case > * > @@ -157,6 +159,9 @@ struct kunit_suite { > int (*init)(struct kunit *test); > void (*exit)(struct kunit *test); > struct kunit_case *test_cases; > + > + /* private - internal use only */ > + struct dentry *debugfs; > }; > > /** > @@ -197,6 +202,15 @@ struct kunit { > > int kunit_run_tests(struct kunit_suite *suite); > > +size_t kunit_suite_num_test_cases(struct kunit_suite *suite); > + > +unsigned int kunit_test_case_num(struct kunit_suite *suite, > + struct kunit_case *test_case); > + > +int __kunit_test_suites_init(struct kunit_suite **suites); > + > +void __kunit_test_suites_exit(struct kunit_suite **suites); > + > /** > * kunit_test_suites() - used to register one or more &struct kunit_suite > * with KUnit. > @@ -226,15 +240,12 @@ struct kunit { > static struct kunit_suite *suites[] = { __VA_ARGS__, NULL}; \ > static int kunit_test_suites_init(void) \ > { \ > - unsigned int i; \ > - for (i = 0; suites[i] != NULL; i++) \ > - kunit_run_tests(suites[i]); \ > - return 0; \ > + return __kunit_test_suites_init(suites); \ > } \ > late_initcall(kunit_test_suites_init); \ > static void __exit kunit_test_suites_exit(void) \ > { \ > - return; \ > + return __kunit_test_suites_exit(suites); \ > } \ > module_exit(kunit_test_suites_exit) > > diff --git a/lib/kunit/Makefile b/lib/kunit/Makefile > index fab5564..869aab0 100644 > --- a/lib/kunit/Makefile > +++ b/lib/kunit/Makefile > @@ -3,7 +3,8 @@ obj-$(CONFIG_KUNIT) += kunit.o > kunit-objs += test.o \ > string-stream.o \ > assert.o \ > - try-catch.o > + try-catch.o \ > + debugfs.o > > obj-$(CONFIG_KUNIT_TEST) += kunit-test.o > > diff --git a/lib/kunit/debugfs.c b/lib/kunit/debugfs.c > new file mode 100644 > index 0000000..578843c > --- /dev/null > +++ b/lib/kunit/debugfs.c > @@ -0,0 +1,104 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (c) 2020, Oracle and/or its affiliates. > + * Author: Alan Maguire <alan.maguire@oracle.com> > + */ > + > +#include <linux/debugfs.h> > +#include <linux/module.h> > + > +#include <kunit/test.h> > + > +#include "string-stream.h" > + > +#define KUNIT_DEBUGFS_ROOT "kunit" > +#define KUNIT_DEBUGFS_RESULTS "results" > + > +/* > + * Create a debugfs representation of test suites: > + * > + * Path Semantics > + * /sys/kernel/debug/kunit/<testsuite>/results Show results of last run for > + * testsuite > + * > + */ > + > +static struct dentry *debugfs_rootdir; > + > +void kunit_debugfs_cleanup(void) > +{ > + debugfs_remove_recursive(debugfs_rootdir); > +} > + > +void kunit_debugfs_init(void) > +{ > + if (!debugfs_rootdir) > + debugfs_rootdir = debugfs_create_dir(KUNIT_DEBUGFS_ROOT, NULL); > +} > + > +static void debugfs_print_result(struct seq_file *seq, > + struct kunit_suite *suite, > + struct kunit_case *test_case) > +{ > + if (!test_case) > + return; > + > + seq_printf(seq, "\t%s %d - %s\n", kunit_status2str(test_case->success), > + kunit_test_case_num(suite, test_case), test_case->name); Do you think we might want to collect info printed to kunit_{info|warn|err}? I would think the expectation failure line at least would be desirable, no? > +} > + > +/* > + * /sys/kernel/debug/kunit/<testsuite>/results shows all results for testsuite. > + */ > +static int debugfs_print_results(struct seq_file *seq, void *v) > +{ > + struct kunit_suite *suite = (struct kunit_suite *)seq->private; > + struct kunit_case *test_case; > + > + if (!suite) > + return 0; > + > + seq_printf(seq, "\t# Subtest: %s\n", suite->name); > + seq_printf(seq, "\t1..%zd\n", kunit_suite_num_test_cases(suite)); Is there any way to reuse the format strings/printing from test.c? It would be nice if we didn't have to remember to update two printers. > + > + for (test_case = suite->test_cases; test_case->run_case; test_case++) > + debugfs_print_result(seq, suite, test_case); > + > + return 0; > +} > + > +static int debugfs_release(struct inode *inode, struct file *file) > +{ > + return single_release(inode, file); > +} > + > +static int debugfs_results_open(struct inode *inode, struct file *file) > +{ > + struct kunit_suite *suite; > + > + suite = (struct kunit_suite *)inode->i_private; > + > + return single_open(file, debugfs_print_results, suite); > +} > + > +static const struct file_operations debugfs_results_fops = { > + .open = debugfs_results_open, > + .read = seq_read, > + .llseek = seq_lseek, > + .release = debugfs_release, > +}; > + > +void kunit_debugfs_create_suite(struct kunit_suite *suite) > +{ > + /* First add /sys/kernel/debug/kunit/<testsuite> */ > + suite->debugfs = debugfs_create_dir(suite->name, debugfs_rootdir); > + > + debugfs_create_file(KUNIT_DEBUGFS_RESULTS, S_IFREG | 0444, > + suite->debugfs, > + suite, &debugfs_results_fops); > +} > + > +void kunit_debugfs_destroy_suite(struct kunit_suite *suite) > +{ > + debugfs_remove_recursive(suite->debugfs); > +} > diff --git a/lib/kunit/debugfs.h b/lib/kunit/debugfs.h > new file mode 100644 > index 0000000..9a92d5e > --- /dev/null > +++ b/lib/kunit/debugfs.h > @@ -0,0 +1,16 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (C) 2020, Oracle and/or its affiliates. > + */ > + > +#ifndef _KUNIT_DEBUGFS_H > +#define _KUNIT_DEBUGFS_H > + > +#include <kunit/test.h> > + > +void kunit_debugfs_create_suite(struct kunit_suite *suite); > +void kunit_debugfs_destroy_suite(struct kunit_suite *suite); > +void kunit_debugfs_init(void); > +void kunit_debugfs_cleanup(void); > + > +#endif /* _KUNIT_DEBUGFS_H */ > diff --git a/lib/kunit/test.c b/lib/kunit/test.c > index 9242f93..07089ca 100644 > --- a/lib/kunit/test.c > +++ b/lib/kunit/test.c > @@ -10,6 +10,7 @@ > #include <linux/kernel.h> > #include <linux/sched/debug.h> > > +#include "debugfs.h" > #include "string-stream.h" > #include "try-catch-impl.h" > > @@ -28,22 +29,24 @@ static void kunit_print_tap_version(void) > } > } > > -static size_t kunit_test_cases_len(struct kunit_case *test_cases) > +size_t kunit_suite_num_test_cases(struct kunit_suite *suite) > { > - struct kunit_case *test_case; > + struct kunit_case *test_case, *test_cases = suite->test_cases; > size_t len = 0; > > - for (test_case = test_cases; test_case->run_case; test_case++) > + for (test_case = test_cases; test_case && test_case->run_case; > + test_case++) > len++; > > return len; > } > +EXPORT_SYMBOL_GPL(kunit_suite_num_test_cases); > > static void kunit_print_subtest_start(struct kunit_suite *suite) > { > kunit_print_tap_version(); > pr_info("\t# Subtest: %s\n", suite->name); > - pr_info("\t1..%zd\n", kunit_test_cases_len(suite->test_cases)); > + pr_info("\t1..%zd\n", kunit_suite_num_test_cases(suite)); > } > > static void kunit_print_ok_not_ok(bool should_indent, > @@ -51,19 +54,15 @@ static void kunit_print_ok_not_ok(bool should_indent, > size_t test_number, > const char *description) > { > - const char *indent, *ok_not_ok; > + const char *indent; > > if (should_indent) > indent = "\t"; > else > indent = ""; > > - if (is_ok) > - ok_not_ok = "ok"; > - else > - ok_not_ok = "not ok"; > - > - pr_info("%s%s %zd - %s\n", indent, ok_not_ok, test_number, description); > + pr_info("%s%s %zd - %s\n", indent, kunit_status2str(is_ok), > + test_number, description); > } > > static bool kunit_suite_has_succeeded(struct kunit_suite *suite) > @@ -87,14 +86,20 @@ static void kunit_print_subtest_end(struct kunit_suite *suite) > suite->name); > } > > -static void kunit_print_test_case_ok_not_ok(struct kunit_case *test_case, > - size_t test_number) > +unsigned int kunit_test_case_num(struct kunit_suite *suite, > + struct kunit_case *test_case) > { > - kunit_print_ok_not_ok(true, > - test_case->success, > - test_number, > - test_case->name); > + struct kunit_case *tc; > + unsigned int i; > + > + for (i = 1, tc = suite->test_cases; tc->run_case; tc++, i++) { > + if (tc == test_case) > + return i; > + } > + > + return 0; > } > +EXPORT_SYMBOL_GPL(kunit_test_case_num); > > static void kunit_print_string_stream(struct kunit *test, > struct string_stream *stream) > @@ -102,6 +107,9 @@ static void kunit_print_string_stream(struct kunit *test, > struct string_stream_fragment *fragment; > char *buf; > > + if (string_stream_is_empty(stream)) > + return; > + > buf = string_stream_get_string(stream); > if (!buf) { > kunit_err(test, > @@ -303,19 +311,20 @@ static void kunit_run_case_catch_errors(struct kunit_suite *suite, > kunit_try_catch_run(try_catch, &context); > > test_case->success = test.success; > + > + kunit_print_ok_not_ok(true, test_case->success, > + kunit_test_case_num(suite, test_case), > + test_case->name); > } > > int kunit_run_tests(struct kunit_suite *suite) > { > struct kunit_case *test_case; > - size_t test_case_count = 1; > > kunit_print_subtest_start(suite); > > - for (test_case = suite->test_cases; test_case->run_case; test_case++) { > + for (test_case = suite->test_cases; test_case->run_case; test_case++) > kunit_run_case_catch_errors(suite, test_case); > - kunit_print_test_case_ok_not_ok(test_case, test_case_count++); > - } > > kunit_print_subtest_end(suite); > > @@ -323,6 +332,37 @@ int kunit_run_tests(struct kunit_suite *suite) > } > EXPORT_SYMBOL_GPL(kunit_run_tests); > > +static void kunit_init_suite(struct kunit_suite *suite) > +{ > + kunit_debugfs_create_suite(suite); > +} It looks like this is only called in one place, can we just call kunit_debugfs_create_suite directly? > + > +int __kunit_test_suites_init(struct kunit_suite **suites) > +{ > + unsigned int i; > + > + for (i = 0; suites[i] != NULL; i++) { > + kunit_init_suite(suites[i]); > + kunit_run_tests(suites[i]); > + } > + return 0; > +} > +EXPORT_SYMBOL_GPL(__kunit_test_suites_init); > + > +static void kunit_exit_suite(struct kunit_suite *suite) > +{ > + kunit_debugfs_destroy_suite(suite); > +} > + > +void __kunit_test_suites_exit(struct kunit_suite **suites) > +{ > + unsigned int i; > + > + for (i = 0; suites[i] != NULL; i++) > + kunit_exit_suite(suites[i]); > +} > +EXPORT_SYMBOL_GPL(__kunit_test_suites_exit); > + > struct kunit_resource *kunit_alloc_and_get_resource(struct kunit *test, > kunit_resource_init_t init, > kunit_resource_free_t free, > @@ -489,12 +529,15 @@ void kunit_cleanup(struct kunit *test) > > static int __init kunit_init(void) > { > + kunit_debugfs_init(); > + > return 0; > } > late_initcall(kunit_init); > > static void __exit kunit_exit(void) > { > + kunit_debugfs_cleanup(); > } > module_exit(kunit_exit); > > -- > 1.8.3.1 >
diff --git a/include/kunit/test.h b/include/kunit/test.h index 2dfb550..37219b8a 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -125,6 +125,8 @@ struct kunit_case { bool success; }; +#define kunit_status2str(status) (status ? "ok" : "not ok") + /** * KUNIT_CASE - A helper for creating a &struct kunit_case * @@ -157,6 +159,9 @@ struct kunit_suite { int (*init)(struct kunit *test); void (*exit)(struct kunit *test); struct kunit_case *test_cases; + + /* private - internal use only */ + struct dentry *debugfs; }; /** @@ -197,6 +202,15 @@ struct kunit { int kunit_run_tests(struct kunit_suite *suite); +size_t kunit_suite_num_test_cases(struct kunit_suite *suite); + +unsigned int kunit_test_case_num(struct kunit_suite *suite, + struct kunit_case *test_case); + +int __kunit_test_suites_init(struct kunit_suite **suites); + +void __kunit_test_suites_exit(struct kunit_suite **suites); + /** * kunit_test_suites() - used to register one or more &struct kunit_suite * with KUnit. @@ -226,15 +240,12 @@ struct kunit { static struct kunit_suite *suites[] = { __VA_ARGS__, NULL}; \ static int kunit_test_suites_init(void) \ { \ - unsigned int i; \ - for (i = 0; suites[i] != NULL; i++) \ - kunit_run_tests(suites[i]); \ - return 0; \ + return __kunit_test_suites_init(suites); \ } \ late_initcall(kunit_test_suites_init); \ static void __exit kunit_test_suites_exit(void) \ { \ - return; \ + return __kunit_test_suites_exit(suites); \ } \ module_exit(kunit_test_suites_exit) diff --git a/lib/kunit/Makefile b/lib/kunit/Makefile index fab5564..869aab0 100644 --- a/lib/kunit/Makefile +++ b/lib/kunit/Makefile @@ -3,7 +3,8 @@ obj-$(CONFIG_KUNIT) += kunit.o kunit-objs += test.o \ string-stream.o \ assert.o \ - try-catch.o + try-catch.o \ + debugfs.o obj-$(CONFIG_KUNIT_TEST) += kunit-test.o diff --git a/lib/kunit/debugfs.c b/lib/kunit/debugfs.c new file mode 100644 index 0000000..578843c --- /dev/null +++ b/lib/kunit/debugfs.c @@ -0,0 +1,104 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2020, Oracle and/or its affiliates. + * Author: Alan Maguire <alan.maguire@oracle.com> + */ + +#include <linux/debugfs.h> +#include <linux/module.h> + +#include <kunit/test.h> + +#include "string-stream.h" + +#define KUNIT_DEBUGFS_ROOT "kunit" +#define KUNIT_DEBUGFS_RESULTS "results" + +/* + * Create a debugfs representation of test suites: + * + * Path Semantics + * /sys/kernel/debug/kunit/<testsuite>/results Show results of last run for + * testsuite + * + */ + +static struct dentry *debugfs_rootdir; + +void kunit_debugfs_cleanup(void) +{ + debugfs_remove_recursive(debugfs_rootdir); +} + +void kunit_debugfs_init(void) +{ + if (!debugfs_rootdir) + debugfs_rootdir = debugfs_create_dir(KUNIT_DEBUGFS_ROOT, NULL); +} + +static void debugfs_print_result(struct seq_file *seq, + struct kunit_suite *suite, + struct kunit_case *test_case) +{ + if (!test_case) + return; + + seq_printf(seq, "\t%s %d - %s\n", kunit_status2str(test_case->success), + kunit_test_case_num(suite, test_case), test_case->name); +} + +/* + * /sys/kernel/debug/kunit/<testsuite>/results shows all results for testsuite. + */ +static int debugfs_print_results(struct seq_file *seq, void *v) +{ + struct kunit_suite *suite = (struct kunit_suite *)seq->private; + struct kunit_case *test_case; + + if (!suite) + return 0; + + seq_printf(seq, "\t# Subtest: %s\n", suite->name); + seq_printf(seq, "\t1..%zd\n", kunit_suite_num_test_cases(suite)); + + for (test_case = suite->test_cases; test_case->run_case; test_case++) + debugfs_print_result(seq, suite, test_case); + + return 0; +} + +static int debugfs_release(struct inode *inode, struct file *file) +{ + return single_release(inode, file); +} + +static int debugfs_results_open(struct inode *inode, struct file *file) +{ + struct kunit_suite *suite; + + suite = (struct kunit_suite *)inode->i_private; + + return single_open(file, debugfs_print_results, suite); +} + +static const struct file_operations debugfs_results_fops = { + .open = debugfs_results_open, + .read = seq_read, + .llseek = seq_lseek, + .release = debugfs_release, +}; + +void kunit_debugfs_create_suite(struct kunit_suite *suite) +{ + /* First add /sys/kernel/debug/kunit/<testsuite> */ + suite->debugfs = debugfs_create_dir(suite->name, debugfs_rootdir); + + debugfs_create_file(KUNIT_DEBUGFS_RESULTS, S_IFREG | 0444, + suite->debugfs, + suite, &debugfs_results_fops); +} + +void kunit_debugfs_destroy_suite(struct kunit_suite *suite) +{ + debugfs_remove_recursive(suite->debugfs); +} diff --git a/lib/kunit/debugfs.h b/lib/kunit/debugfs.h new file mode 100644 index 0000000..9a92d5e --- /dev/null +++ b/lib/kunit/debugfs.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020, Oracle and/or its affiliates. + */ + +#ifndef _KUNIT_DEBUGFS_H +#define _KUNIT_DEBUGFS_H + +#include <kunit/test.h> + +void kunit_debugfs_create_suite(struct kunit_suite *suite); +void kunit_debugfs_destroy_suite(struct kunit_suite *suite); +void kunit_debugfs_init(void); +void kunit_debugfs_cleanup(void); + +#endif /* _KUNIT_DEBUGFS_H */ diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 9242f93..07089ca 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -10,6 +10,7 @@ #include <linux/kernel.h> #include <linux/sched/debug.h> +#include "debugfs.h" #include "string-stream.h" #include "try-catch-impl.h" @@ -28,22 +29,24 @@ static void kunit_print_tap_version(void) } } -static size_t kunit_test_cases_len(struct kunit_case *test_cases) +size_t kunit_suite_num_test_cases(struct kunit_suite *suite) { - struct kunit_case *test_case; + struct kunit_case *test_case, *test_cases = suite->test_cases; size_t len = 0; - for (test_case = test_cases; test_case->run_case; test_case++) + for (test_case = test_cases; test_case && test_case->run_case; + test_case++) len++; return len; } +EXPORT_SYMBOL_GPL(kunit_suite_num_test_cases); static void kunit_print_subtest_start(struct kunit_suite *suite) { kunit_print_tap_version(); pr_info("\t# Subtest: %s\n", suite->name); - pr_info("\t1..%zd\n", kunit_test_cases_len(suite->test_cases)); + pr_info("\t1..%zd\n", kunit_suite_num_test_cases(suite)); } static void kunit_print_ok_not_ok(bool should_indent, @@ -51,19 +54,15 @@ static void kunit_print_ok_not_ok(bool should_indent, size_t test_number, const char *description) { - const char *indent, *ok_not_ok; + const char *indent; if (should_indent) indent = "\t"; else indent = ""; - if (is_ok) - ok_not_ok = "ok"; - else - ok_not_ok = "not ok"; - - pr_info("%s%s %zd - %s\n", indent, ok_not_ok, test_number, description); + pr_info("%s%s %zd - %s\n", indent, kunit_status2str(is_ok), + test_number, description); } static bool kunit_suite_has_succeeded(struct kunit_suite *suite) @@ -87,14 +86,20 @@ static void kunit_print_subtest_end(struct kunit_suite *suite) suite->name); } -static void kunit_print_test_case_ok_not_ok(struct kunit_case *test_case, - size_t test_number) +unsigned int kunit_test_case_num(struct kunit_suite *suite, + struct kunit_case *test_case) { - kunit_print_ok_not_ok(true, - test_case->success, - test_number, - test_case->name); + struct kunit_case *tc; + unsigned int i; + + for (i = 1, tc = suite->test_cases; tc->run_case; tc++, i++) { + if (tc == test_case) + return i; + } + + return 0; } +EXPORT_SYMBOL_GPL(kunit_test_case_num); static void kunit_print_string_stream(struct kunit *test, struct string_stream *stream) @@ -102,6 +107,9 @@ static void kunit_print_string_stream(struct kunit *test, struct string_stream_fragment *fragment; char *buf; + if (string_stream_is_empty(stream)) + return; + buf = string_stream_get_string(stream); if (!buf) { kunit_err(test, @@ -303,19 +311,20 @@ static void kunit_run_case_catch_errors(struct kunit_suite *suite, kunit_try_catch_run(try_catch, &context); test_case->success = test.success; + + kunit_print_ok_not_ok(true, test_case->success, + kunit_test_case_num(suite, test_case), + test_case->name); } int kunit_run_tests(struct kunit_suite *suite) { struct kunit_case *test_case; - size_t test_case_count = 1; kunit_print_subtest_start(suite); - for (test_case = suite->test_cases; test_case->run_case; test_case++) { + for (test_case = suite->test_cases; test_case->run_case; test_case++) kunit_run_case_catch_errors(suite, test_case); - kunit_print_test_case_ok_not_ok(test_case, test_case_count++); - } kunit_print_subtest_end(suite); @@ -323,6 +332,37 @@ int kunit_run_tests(struct kunit_suite *suite) } EXPORT_SYMBOL_GPL(kunit_run_tests); +static void kunit_init_suite(struct kunit_suite *suite) +{ + kunit_debugfs_create_suite(suite); +} + +int __kunit_test_suites_init(struct kunit_suite **suites) +{ + unsigned int i; + + for (i = 0; suites[i] != NULL; i++) { + kunit_init_suite(suites[i]); + kunit_run_tests(suites[i]); + } + return 0; +} +EXPORT_SYMBOL_GPL(__kunit_test_suites_init); + +static void kunit_exit_suite(struct kunit_suite *suite) +{ + kunit_debugfs_destroy_suite(suite); +} + +void __kunit_test_suites_exit(struct kunit_suite **suites) +{ + unsigned int i; + + for (i = 0; suites[i] != NULL; i++) + kunit_exit_suite(suites[i]); +} +EXPORT_SYMBOL_GPL(__kunit_test_suites_exit); + struct kunit_resource *kunit_alloc_and_get_resource(struct kunit *test, kunit_resource_init_t init, kunit_resource_free_t free, @@ -489,12 +529,15 @@ void kunit_cleanup(struct kunit *test) static int __init kunit_init(void) { + kunit_debugfs_init(); + return 0; } late_initcall(kunit_init); static void __exit kunit_exit(void) { + kunit_debugfs_cleanup(); } module_exit(kunit_exit);
add debugfs support for displaying kunit test suite results; this is especially useful for module-loaded tests to allow disentangling of test result display from other dmesg events. Signed-off-by: Alan Maguire <alan.maguire@oracle.com> --- include/kunit/test.h | 21 ++++++++--- lib/kunit/Makefile | 3 +- lib/kunit/debugfs.c | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++ lib/kunit/debugfs.h | 16 ++++++++ lib/kunit/test.c | 85 ++++++++++++++++++++++++++++++----------- 5 files changed, 202 insertions(+), 27 deletions(-) create mode 100644 lib/kunit/debugfs.c create mode 100644 lib/kunit/debugfs.h