Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> CC: Russell King <linux@xxxxxxxxxxxxxxxx> CC: Catalin Marinas <catalin.marinas@xxxxxxx> CC: Will Deacon <will.deacon@xxxxxxx> CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CC: Paul Turner <pjt@xxxxxxxxxx> CC: Andrew Hunter <ahh@xxxxxxxxxx> CC: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CC: Andy Lutomirski <luto@xxxxxxxxxxxxxx> CC: Andi Kleen <andi@xxxxxxxxxxxxxx> CC: Dave Watson <davejwatson@xxxxxx> CC: Chris Lameter <cl@xxxxxxxxx> CC: Ingo Molnar <mingo@xxxxxxxxxx> CC: "H. Peter Anvin" <hpa@xxxxxxxxx> CC: Ben Maurer <bmaurer@xxxxxx> CC: Steven Rostedt <rostedt@xxxxxxxxxxx> CC: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx> CC: Josh Triplett <josh@xxxxxxxxxxxxxxxx> CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> CC: Boqun Feng <boqun.feng@xxxxxxxxx> CC: Shuah Khan <shuah@xxxxxxxxxx> CC: linux-kselftest@xxxxxxxxxxxxxxx CC: linux-api@xxxxxxxxxxxxxxx --- MAINTAINERS | 1 + tools/testing/selftests/cpu-opv/.gitignore | 1 + tools/testing/selftests/cpu-opv/Makefile | 13 + .../testing/selftests/cpu-opv/basic_cpu_opv_test.c | 828 +++++++++++++++++++++ tools/testing/selftests/cpu-opv/cpu-op.c | 189 +++++ tools/testing/selftests/cpu-opv/cpu-op.h | 53 ++ 6 files changed, 1085 insertions(+) create mode 100644 tools/testing/selftests/cpu-opv/.gitignore create mode 100644 tools/testing/selftests/cpu-opv/Makefile create mode 100644 tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.c create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.h diff --git a/MAINTAINERS b/MAINTAINERS index 6a5f3afb2ea4..9134a3234737 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3617,6 +3617,7 @@ L: linux-kernel@xxxxxxxxxxxxxxx S: Supported F: kernel/cpu_opv.c F: include/uapi/linux/cpu_opv.h +F: tools/testing/selftests/cpu-opv/ CRAMFS FILESYSTEM W: http://sourceforge.net/projects/cramfs/ diff --git a/tools/testing/selftests/cpu-opv/.gitignore b/tools/testing/selftests/cpu-opv/.gitignore new file mode 100644 index 000000000000..c7186eb95cf5 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/.gitignore @@ -0,0 +1 @@ +basic_cpu_opv_test diff --git a/tools/testing/selftests/cpu-opv/Makefile b/tools/testing/selftests/cpu-opv/Makefile new file mode 100644 index 000000000000..81d0596824ee --- /dev/null +++ b/tools/testing/selftests/cpu-opv/Makefile @@ -0,0 +1,13 @@ +CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ +LDFLAGS += -lpthread + +TESTS = basic_cpu_opv_test + +all: $(TESTS) +%: %.c cpu-op.c cpu-op.h + $(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS) + +include ../lib.mk + +clean: + $(RM) $(TESTS) diff --git a/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c b/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c new file mode 100644 index 000000000000..e2ad818cca1c --- /dev/null +++ b/tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c @@ -0,0 +1,828 @@ +/* + * Basic test coverage for cpu_opv system call. + */ + +#define _GNU_SOURCE +#include <assert.h> +#include <sched.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <sys/time.h> +#include <errno.h> +#include <stdlib.h> + +#include "cpu-op.h" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +#define TESTBUFLEN 4096 + +static int test_compare_eq_op(char *a, char *b, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)a, + .u.compare_op.b = (unsigned long)b, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_compare_eq_same(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_eq same"; + + printf("Testing %s\n", test_name); + + /* Test compare_eq */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_compare_eq_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret > 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + return 0; +} + +static int test_compare_eq_diff(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_eq different"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_compare_eq_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + return 0; +} + +static int test_compare_ne_op(char *a, char *b, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + .u.compare_op.a = (unsigned long)a, + .u.compare_op.b = (unsigned long)b, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_compare_ne_same(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_ne same"; + + printf("Testing %s\n", test_name); + + /* Test compare_ne */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_compare_ne_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + return 0; +} + +static int test_compare_ne_diff(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_compare_ne different"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_compare_ne_op(buf2, buf1, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + return 0; +} + +static int test_2compare_eq_op(char *a, char *b, char *c, char *d, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)a, + .u.compare_op.b = (unsigned long)b, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)c, + .u.compare_op.b = (unsigned long)d, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_2compare_eq_index(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + char buf3[TESTBUFLEN]; + char buf4[TESTBUFLEN]; + const char *test_name = "test_2compare_eq index"; + + printf("Testing %s\n", test_name); + + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + memset(buf3, 0, TESTBUFLEN); + memset(buf4, 0, TESTBUFLEN); + + /* First compare failure is op[0], expect 1. */ + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 1) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + + /* All compares succeed. */ + for (i = 0; i < TESTBUFLEN; i++) + buf2[i] = (char)i; + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + + /* First compare failure is op[1], expect 2. */ + for (i = 0; i < TESTBUFLEN; i++) + buf3[i] = (char)i; + ret = test_2compare_eq_op(buf2, buf1, buf4, buf3, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 2) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 2); + return -1; + } + + return 0; +} + +static int test_2compare_ne_op(char *a, char *b, char *c, char *d, + size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + .u.compare_op.a = (unsigned long)a, + .u.compare_op.b = (unsigned long)b, + }, + [1] = { + .op = CPU_COMPARE_NE_OP, + .len = len, + .u.compare_op.a = (unsigned long)c, + .u.compare_op.b = (unsigned long)d, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_2compare_ne_index(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + char buf3[TESTBUFLEN]; + char buf4[TESTBUFLEN]; + const char *test_name = "test_2compare_ne index"; + + printf("Testing %s\n", test_name); + + memset(buf1, 0, TESTBUFLEN); + memset(buf2, 0, TESTBUFLEN); + memset(buf3, 0, TESTBUFLEN); + memset(buf4, 0, TESTBUFLEN); + + /* First compare ne failure is op[0], expect 1. */ + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 1) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + + /* All compare ne succeed. */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + for (i = 0; i < TESTBUFLEN; i++) + buf3[i] = (char)i; + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + + /* First compare failure is op[1], expect 2. */ + for (i = 0; i < TESTBUFLEN; i++) + buf4[i] = (char)i; + ret = test_2compare_ne_op(buf2, buf1, buf4, buf3, TESTBUFLEN); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret != 2) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 2); + return -1; + } + + return 0; +} + + +static int test_memcpy_op(void *dst, void *src, size_t len) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)dst, + .u.memcpy_op.src = (unsigned long)src, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_memcpy(void) +{ + int i, ret; + char buf1[TESTBUFLEN]; + char buf2[TESTBUFLEN]; + const char *test_name = "test_memcpy"; + + printf("Testing %s\n", test_name); + + /* Test memcpy */ + for (i = 0; i < TESTBUFLEN; i++) + buf1[i] = (char)i; + memset(buf2, 0, TESTBUFLEN); + ret = test_memcpy_op(buf2, buf1, TESTBUFLEN); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + for (i = 0; i < TESTBUFLEN; i++) { + if (buf2[i] != (char)i) { + printf("%s failed. Expecting '%d', found '%d' at offset %d\n", + test_name, (char)i, buf2[i], i); + return -1; + } + } + return 0; +} + +static int test_memcpy_u32(void) +{ + int ret; + uint32_t v1, v2; + const char *test_name = "test_memcpy_u32"; + + printf("Testing %s\n", test_name); + + /* Test memcpy_u32 */ + v1 = 42; + v2 = 0; + ret = test_memcpy_op(&v2, &v1, sizeof(v1)); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (v1 != v2) { + printf("%s failed. Expecting '%d', found '%d'\n", + test_name, v1, v2); + return -1; + } + return 0; +} + +static int test_add_op(int *v, int64_t increment) +{ + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_op_add(v, increment, sizeof(*v), cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_add(void) +{ + int orig_v = 42, v, ret; + int increment = 1; + const char *test_name = "test_add"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_add_op(&v, increment); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != orig_v + increment) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v); + return -1; + } + return 0; +} + +static int test_two_add_op(int *v, int64_t *increments) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_ADD_OP, + .len = sizeof(*v), + .u.arithmetic_op.p = (unsigned long)v, + .u.arithmetic_op.count = increments[0], + }, + [1] = { + .op = CPU_ADD_OP, + .len = sizeof(*v), + .u.arithmetic_op.p = (unsigned long)v, + .u.arithmetic_op.count = increments[1], + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_two_add(void) +{ + int orig_v = 42, v, ret; + int64_t increments[2] = { 99, 123 }; + const char *test_name = "test_two_add"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_two_add_op(&v, increments); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != orig_v + increments[0] + increments[1]) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v); + return -1; + } + return 0; +} + +static int test_or_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_OR_OP, + .len = sizeof(*v), + .u.bitwise_op.p = (unsigned long)v, + .u.bitwise_op.mask = mask, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_or(void) +{ + int orig_v = 0xFF00000, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_or"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_or_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v | mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v | mask); + return -1; + } + return 0; +} + +static int test_and_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_AND_OP, + .len = sizeof(*v), + .u.bitwise_op.p = (unsigned long)v, + .u.bitwise_op.mask = mask, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_and(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_and"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_and_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v & mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v & mask); + return -1; + } + return 0; +} + +static int test_xor_op(int *v, uint64_t mask) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_XOR_OP, + .len = sizeof(*v), + .u.bitwise_op.p = (unsigned long)v, + .u.bitwise_op.mask = mask, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_xor(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t mask = 0xFFF; + const char *test_name = "test_xor"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_xor_op(&v, mask); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v ^ mask)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v ^ mask); + return -1; + } + return 0; +} + +static int test_lshift_op(int *v, uint32_t bits) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_LSHIFT_OP, + .len = sizeof(*v), + .u.shift_op.p = (unsigned long)v, + .u.shift_op.bits = bits, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_lshift(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t bits = 5; + const char *test_name = "test_lshift"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_lshift_op(&v, bits); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v << bits)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v << bits); + return -1; + } + return 0; +} + + +static int test_rshift_op(int *v, uint32_t bits) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_RSHIFT_OP, + .len = sizeof(*v), + .u.shift_op.p = (unsigned long)v, + .u.shift_op.bits = bits, + }, + }; + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + +static int test_rshift(void) +{ + int orig_v = 0xF00, v, ret; + uint32_t bits = 5; + const char *test_name = "test_rshift"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_rshift_op(&v, bits); + if (ret) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + return -1; + } + if (v != (orig_v >> bits)) { + printf("%s unexpected value: %d. Should be %d.\n", + test_name, v, orig_v >> bits); + return -1; + } + return 0; +} + +static int test_cmpxchg_op(void *v, void *expect, void *old, void *n, + size_t len) +{ + int ret, cpu; + + do { + cpu = cpu_op_get_current_cpu(); + ret = cpu_op_cmpxchg(v, expect, old, n, len, cpu); + } while (ret == -1 && errno == EAGAIN); + + return ret; +} + + +static int test_cmpxchg_success(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 1, old = 0, n = 3; + const char *test_name = "test_cmpxchg success"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_cmpxchg_op(&v, &expect, &old, &n, sizeof(uint64_t)); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 0); + return -1; + } + if (v != n) { + printf("%s v is %lld, expecting %lld\n", + test_name, (long long)v, (long long)n); + return -1; + } + if (old != orig_v) { + printf("%s old is %lld, expecting %lld\n", + test_name, (long long)old, (long long)orig_v); + return -1; + } + return 0; +} + +static int test_cmpxchg_fail(void) +{ + int ret; + uint64_t orig_v = 1, v, expect = 123, old = 0, n = 3; + const char *test_name = "test_cmpxchg fail"; + + printf("Testing %s\n", test_name); + + v = orig_v; + ret = test_cmpxchg_op(&v, &expect, &old, &n, sizeof(uint64_t)); + if (ret < 0) { + printf("%s returned with %d, errno: %s\n", + test_name, ret, strerror(errno)); + exit(-1); + } + if (ret == 0) { + printf("%s returned %d, expecting %d\n", + test_name, ret, 1); + return -1; + } + if (v == n) { + printf("%s v is %lld, expecting %lld\n", + test_name, (long long)v, (long long)orig_v); + return -1; + } + if (old != orig_v) { + printf("%s old is %lld, expecting %lld\n", + test_name, (long long)old, (long long)orig_v); + return -1; + } + return 0; +} + +int main(int argc, char **argv) +{ + int ret = 0; + + ret |= test_compare_eq_same(); + ret |= test_compare_eq_diff(); + ret |= test_compare_ne_same(); + ret |= test_compare_ne_diff(); + ret |= test_2compare_eq_index(); + ret |= test_2compare_ne_index(); + ret |= test_memcpy(); + ret |= test_memcpy_u32(); + ret |= test_add(); + ret |= test_two_add(); + ret |= test_or(); + ret |= test_and(); + ret |= test_xor(); + ret |= test_lshift(); + ret |= test_rshift(); + ret |= test_cmpxchg_success(); + ret |= test_cmpxchg_fail(); + + return ret; +} diff --git a/tools/testing/selftests/cpu-opv/cpu-op.c b/tools/testing/selftests/cpu-opv/cpu-op.c new file mode 100644 index 000000000000..d25420c74a71 --- /dev/null +++ b/tools/testing/selftests/cpu-opv/cpu-op.c @@ -0,0 +1,189 @@ +/* + * cpu-op.c + * + * Copyright (C) 2017 Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; only + * version 2.1 of the License. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + */ + +#define _GNU_SOURCE +#include <errno.h> +#include <sched.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <syscall.h> +#include <assert.h> +#include <signal.h> + +#include "cpu-op.h" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +int cpu_opv(struct cpu_op *cpu_opv, int cpuopcnt, int cpu, int flags) +{ + return syscall(__NR_cpu_opv, cpu_opv, cpuopcnt, cpu, flags); +} + +int cpu_op_get_current_cpu(void) +{ + int cpu; + + cpu = sched_getcpu(); + if (cpu < 0) { + perror("sched_getcpu()"); + abort(); + } + return cpu; +} + +int cpu_op_cmpstore(void *v, void *expect, void *n, size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)expect, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)n, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_2cmp1store(void *v, void *expect, void *n, void *check2, + void *expect2, size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)expect, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)check2, + .u.compare_op.b = (unsigned long)expect2, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)n, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_1cmp2store(void *v, void *expect, void *_new, + void *v2, void *_new2, size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)expect, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)_new, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v2, + .u.memcpy_op.src = (unsigned long)_new2, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpxchg(void *v, void *expect, void *old, void *n, + size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)old, + .u.memcpy_op.src = (unsigned long)v, + }, + [1] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)expect, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)n, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_add(void *v, int64_t count, size_t len, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_ADD_OP, + .len = len, + .u.arithmetic_op.p = (unsigned long)v, + .u.arithmetic_op.count = count, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} + +int cpu_op_cmpstorememcpy(void *v, void *expect, void *_new, size_t len, + void *dst, void *src, size_t copylen, int cpu) +{ + struct cpu_op opvec[] = { + [0] = { + .op = CPU_COMPARE_EQ_OP, + .len = len, + .u.compare_op.a = (unsigned long)v, + .u.compare_op.b = (unsigned long)expect, + }, + [1] = { + .op = CPU_MEMCPY_OP, + .len = len, + .u.memcpy_op.dst = (unsigned long)v, + .u.memcpy_op.src = (unsigned long)_new, + }, + [2] = { + .op = CPU_MEMCPY_OP, + .len = copylen, + .u.memcpy_op.dst = (unsigned long)dst, + .u.memcpy_op.src = (unsigned long)src, + }, + }; + + return cpu_opv(opvec, ARRAY_SIZE(opvec), cpu, 0); +} diff --git a/tools/testing/selftests/cpu-opv/cpu-op.h b/tools/testing/selftests/cpu-opv/cpu-op.h new file mode 100644 index 000000000000..3f5679e643bb --- /dev/null +++ b/tools/testing/selftests/cpu-opv/cpu-op.h @@ -0,0 +1,53 @@ +/* + * cpu-op.h + * + * (C) Copyright 2017 - Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef CPU_OPV_H +#define CPU_OPV_H + +#include <stdlib.h> +#include <linux/cpu_opv.h> + +#define likely(x) __builtin_expect(!!(x), 1) +#define unlikely(x) __builtin_expect(!!(x), 0) +#define barrier() __asm__ __volatile__("" : : : "memory") + +#define ACCESS_ONCE(x) (*(__volatile__ __typeof__(x) *)&(x)) +#define WRITE_ONCE(x, v) __extension__ ({ ACCESS_ONCE(x) = (v); }) +#define READ_ONCE(x) ACCESS_ONCE(x) + +int cpu_opv(struct cpu_op *cpuopv, int cpuopcnt, int cpu, int flags); +int cpu_op_get_current_cpu(void); + +int cpu_op_cmpstore(void *v, void *expect, void *_new, size_t len, int cpu); +int cpu_op_2cmp1store(void *v, void *expect, void *_new, void *check2, + void *expect2, size_t len, int cpu); +int cpu_op_1cmp2store(void *v, void *expect, void *_new, + void *v2, void *_new2, size_t len, int cpu); +int cpu_op_cmpxchg(void *v, void *expect, void *old, void *_new, + size_t len, int cpu); +int cpu_op_add(void *v, int64_t count, size_t len, int cpu); +int cpu_op_cmpstorememcpy(void *v, void *expect, void *_new, size_t len, + void *dst, void *src, size_t copylen, int cpu); + +#endif /* CPU_OPV_H_ */ -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
