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bitmap fixes for v6.0-rc3 

Hi Linus,
 
 Please pull (hopefully) the last portion of fixes from Sander for his
 UP rework series. The original series came from -mm tree, and it was
 not the latest version, that's why we need follow-ups. It fixes only
 a test introduced by that series. The test fails under certain configs.
 
 From Sander:
 
 This series fixes the reported issues, and implements the suggested
 improvements, for the version of the cpumask tests [1] that was merged
 with commit c41e8866c2 ("lib/test: introduce cpumask KUnit test
 suite").
 
 These changes include fixes for the tests, and better alignment with the
 KUnit style guidelines.
 
 Thanks,
 Yury
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Merge tag 'bitmap-6.0-rc3' of github.com:/norov/linux

Pull bitmap fixes from Yury Norov:
 "Fix the reported issues, and implements the suggested improvements,
  for the version of the cpumask tests [1] that was merged with commit
  c41e8866c2 ("lib/test: introduce cpumask KUnit test suite").

  These changes include fixes for the tests, and better alignment with
  the KUnit style guidelines"

* tag 'bitmap-6.0-rc3' of github.com:/norov/linux:
  lib/cpumask_kunit: add tests file to MAINTAINERS
  lib/cpumask_kunit: log mask contents
  lib/test_cpumask: follow KUnit style guidelines
  lib/test_cpumask: fix cpu_possible_mask last test
  lib/test_cpumask: drop cpu_possible_mask full test
This commit is contained in:
Linus Torvalds 2022-08-28 14:36:27 -07:00
parent 8379c0b31f 5d7fef0804
commit 373eff576e
4 changed files with 37 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
MAINTAINERS
View File

@ -3612,6 +3612,7 @@ F: include/linux/find.h
F: include/linux/nodemask.h
F: lib/bitmap.c
F: lib/cpumask.c
F: lib/cpumask_kunit.c
F: lib/find_bit.c
F: lib/find_bit_benchmark.c
F: lib/test_bitmap.c

7
lib/Kconfig.debug
View File

@ -2029,13 +2029,16 @@ config LKDTM
Documentation on how to use the module can be found in
Documentation/fault-injection/provoke-crashes.rst
config TEST_CPUMASK
tristate "cpumask tests" if !KUNIT_ALL_TESTS
config CPUMASK_KUNIT_TEST
tristate "KUnit test for cpumask" if !KUNIT_ALL_TESTS
depends on KUNIT
default KUNIT_ALL_TESTS
help
Enable to turn on cpumask tests, running at boot or module load time.
For more information on KUnit and unit tests in general, please refer
to the KUnit documentation in Documentation/dev-tools/kunit/.
If unsure, say N.
config TEST_LIST_SORT

2
lib/Makefile
View File

@ -60,6 +60,7 @@ obj-$(CONFIG_TEST_BPF) += test_bpf.o
obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
obj-$(CONFIG_TEST_BITOPS) += test_bitops.o
CFLAGS_test_bitops.o += -Werror
obj-$(CONFIG_CPUMASK_KUNIT_TEST) += cpumask_kunit.o
obj-$(CONFIG_TEST_SYSCTL) += test_sysctl.o
obj-$(CONFIG_TEST_SIPHASH) += test_siphash.o
obj-$(CONFIG_HASH_KUNIT_TEST) += test_hash.o
@ -100,7 +101,6 @@ obj-$(CONFIG_TEST_HMM) += test_hmm.o
obj-$(CONFIG_TEST_FREE_PAGES) += test_free_pages.o
obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
obj-$(CONFIG_TEST_REF_TRACKER) += test_ref_tracker.o
obj-$(CONFIG_TEST_CPUMASK) += test_cpumask.o
CFLAGS_test_fprobe.o += $(CC_FLAGS_FTRACE)
obj-$(CONFIG_FPROBE_SANITY_TEST) += test_fprobe.o
#

50
lib/test_cpumask.c → lib/cpumask_kunit.c
View File

@ -9,6 +9,10 @@
#include <linux/cpu.h>
#include <linux/cpumask.h>
#define MASK_MSG(m) \
"%s contains %sCPUs %*pbl", #m, (cpumask_weight(m) ? "" : "no "), \
nr_cpumask_bits, cpumask_bits(m)
#define EXPECT_FOR_EACH_CPU_EQ(test, mask) \
do { \
const cpumask_t *m = (mask); \
@ -16,7 +20,7 @@
int cpu, iter = 0; \
for_each_cpu(cpu, m) \
iter++; \
KUNIT_EXPECT_EQ((test), mask_weight, iter); \
KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(mask)); \
} while (0)
#define EXPECT_FOR_EACH_CPU_NOT_EQ(test, mask) \
@ -26,7 +30,7 @@
int cpu, iter = 0; \
for_each_cpu_not(cpu, m) \
iter++; \
KUNIT_EXPECT_EQ((test), nr_cpu_ids - mask_weight, iter); \
KUNIT_EXPECT_EQ_MSG((test), nr_cpu_ids - mask_weight, iter, MASK_MSG(mask)); \
} while (0)
#define EXPECT_FOR_EACH_CPU_WRAP_EQ(test, mask) \
@ -36,7 +40,7 @@
int cpu, iter = 0; \
for_each_cpu_wrap(cpu, m, nr_cpu_ids / 2) \
iter++; \
KUNIT_EXPECT_EQ((test), mask_weight, iter); \
KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(mask)); \
} while (0)
#define EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, name) \
@ -45,7 +49,7 @@
int cpu, iter = 0; \
for_each_##name##_cpu(cpu) \
iter++; \
KUNIT_EXPECT_EQ((test), mask_weight, iter); \
KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(cpu_##name##_mask)); \
} while (0)
static cpumask_t mask_empty;
@ -53,37 +57,43 @@ static cpumask_t mask_all;
static void test_cpumask_weight(struct kunit *test)
{
KUNIT_EXPECT_TRUE(test, cpumask_empty(&mask_empty));
KUNIT_EXPECT_TRUE(test, cpumask_full(cpu_possible_mask));
KUNIT_EXPECT_TRUE(test, cpumask_full(&mask_all));
KUNIT_EXPECT_TRUE_MSG(test, cpumask_empty(&mask_empty), MASK_MSG(&mask_empty));
KUNIT_EXPECT_TRUE_MSG(test, cpumask_full(&mask_all), MASK_MSG(&mask_all));
KUNIT_EXPECT_EQ(test, 0, cpumask_weight(&mask_empty));
KUNIT_EXPECT_EQ(test, nr_cpu_ids, cpumask_weight(cpu_possible_mask));
KUNIT_EXPECT_EQ(test, nr_cpumask_bits, cpumask_weight(&mask_all));
KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_weight(&mask_empty), MASK_MSG(&mask_empty));
KUNIT_EXPECT_EQ_MSG(test, nr_cpu_ids, cpumask_weight(cpu_possible_mask),
MASK_MSG(cpu_possible_mask));
KUNIT_EXPECT_EQ_MSG(test, nr_cpumask_bits, cpumask_weight(&mask_all), MASK_MSG(&mask_all));
}
static void test_cpumask_first(struct kunit *test)
{
KUNIT_EXPECT_LE(test, nr_cpu_ids, cpumask_first(&mask_empty));
KUNIT_EXPECT_EQ(test, 0, cpumask_first(cpu_possible_mask));
KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_first(&mask_empty), MASK_MSG(&mask_empty));
KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_first(cpu_possible_mask), MASK_MSG(cpu_possible_mask));
KUNIT_EXPECT_EQ(test, 0, cpumask_first_zero(&mask_empty));
KUNIT_EXPECT_LE(test, nr_cpu_ids, cpumask_first_zero(cpu_possible_mask));
KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_first_zero(&mask_empty), MASK_MSG(&mask_empty));
KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_first_zero(cpu_possible_mask),
MASK_MSG(cpu_possible_mask));
}
static void test_cpumask_last(struct kunit *test)
{
KUNIT_EXPECT_LE(test, nr_cpumask_bits, cpumask_last(&mask_empty));
KUNIT_EXPECT_EQ(test, nr_cpumask_bits - 1, cpumask_last(cpu_possible_mask));
KUNIT_EXPECT_LE_MSG(test, nr_cpumask_bits, cpumask_last(&mask_empty),
MASK_MSG(&mask_empty));
KUNIT_EXPECT_EQ_MSG(test, nr_cpu_ids - 1, cpumask_last(cpu_possible_mask),
MASK_MSG(cpu_possible_mask));
}
static void test_cpumask_next(struct kunit *test)
{
KUNIT_EXPECT_EQ(test, 0, cpumask_next_zero(-1, &mask_empty));
KUNIT_EXPECT_LE(test, nr_cpu_ids, cpumask_next_zero(-1, cpu_possible_mask));
KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_next_zero(-1, &mask_empty), MASK_MSG(&mask_empty));
KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_next_zero(-1, cpu_possible_mask),
MASK_MSG(cpu_possible_mask));
KUNIT_EXPECT_LE(test, nr_cpu_ids, cpumask_next(-1, &mask_empty));
KUNIT_EXPECT_EQ(test, 0, cpumask_next(-1, cpu_possible_mask));
KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_next(-1, &mask_empty),
MASK_MSG(&mask_empty));
KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_next(-1, cpu_possible_mask),
MASK_MSG(cpu_possible_mask));
}
static void test_cpumask_iterators(struct kunit *test)