@@ -30,7 +30,7 @@ int main(int argc, char *argv[])
for (i = 0; i < 2; i++) {
_gettime(CLOCK_MONOTONIC, &tst, i);
- if (abs(tst.tv_sec - now.tv_sec) > 5)
+ if (labs(tst.tv_sec - now.tv_sec) > 5)
return pr_fail("%ld %ld\n", now.tv_sec, tst.tv_sec);
}
return 0;
@@ -50,7 +50,7 @@ int main(int argc, char *argv[])
for (i = 0; i < 2; i++) {
_gettime(CLOCK_MONOTONIC, &tst, i);
- if (abs(tst.tv_sec - now.tv_sec) > 5)
+ if (labs(tst.tv_sec - now.tv_sec) > 5)
return pr_fail("%ld %ld\n",
now.tv_sec, tst.tv_sec);
}
@@ -70,7 +70,7 @@ int main(int argc, char *argv[])
/* Check that a child process is in the new timens. */
for (i = 0; i < 2; i++) {
_gettime(CLOCK_MONOTONIC, &tst, i);
- if (abs(tst.tv_sec - now.tv_sec - OFFSET) > 5)
+ if (labs(tst.tv_sec - now.tv_sec - OFFSET) > 5)
return pr_fail("%ld %ld\n",
now.tv_sec + OFFSET, tst.tv_sec);
}
@@ -56,7 +56,7 @@ int run_test(int clockid, struct timespec now)
return pr_perror("timerfd_gettime");
elapsed = new_value.it_value.tv_sec;
- if (abs(elapsed - 3600) > 60) {
+ if (llabs(elapsed - 3600) > 60) {
ksft_test_result_fail("clockid: %d elapsed: %lld\n",
clockid, elapsed);
return 1;
@@ -61,7 +61,7 @@ int run_test(int clockid, struct timespec now)
return pr_perror("timerfd_gettime(%d)", clockid);
elapsed = new_value.it_value.tv_sec;
- if (abs(elapsed - 3600) > 60) {
+ if (llabs(elapsed - 3600) > 60) {
ksft_test_result_fail("clockid: %d elapsed: %lld\n",
clockid, elapsed);
return 1;
@@ -32,7 +32,7 @@ static void *tcheck(void *_args)
for (i = 0; i < 2; i++) {
_gettime(CLOCK_MONOTONIC, &tst, i);
- if (abs(tst.tv_sec - now->tv_sec) > 5) {
+ if (labs(tst.tv_sec - now->tv_sec) > 5) {
pr_fail("%s: in-thread: unexpected value: %ld (%ld)\n",
args->tst_name, tst.tv_sec, now->tv_sec);
return (void *)1UL;
@@ -64,7 +64,7 @@ static int check(char *tst_name, struct timespec *now)
for (i = 0; i < 2; i++) {
_gettime(CLOCK_MONOTONIC, &tst, i);
- if (abs(tst.tv_sec - now->tv_sec) > 5)
+ if (labs(tst.tv_sec - now->tv_sec) > 5)
return pr_fail("%s: unexpected value: %ld (%ld)\n",
tst_name, tst.tv_sec, now->tv_sec);
}
@@ -1,35 +1,30 @@
# SPDX-License-Identifier: GPL-2.0
-include ../lib.mk
-
uname_M := $(shell uname -m 2>/dev/null || echo not)
ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
-TEST_GEN_PROGS := $(OUTPUT)/vdso_test_gettimeofday $(OUTPUT)/vdso_test_getcpu
-TEST_GEN_PROGS += $(OUTPUT)/vdso_test_abi
-TEST_GEN_PROGS += $(OUTPUT)/vdso_test_clock_getres
+TEST_GEN_PROGS := vdso_test_gettimeofday
+TEST_GEN_PROGS += vdso_test_getcpu
+TEST_GEN_PROGS += vdso_test_abi
+TEST_GEN_PROGS += vdso_test_clock_getres
ifeq ($(ARCH),$(filter $(ARCH),x86 x86_64))
-TEST_GEN_PROGS += $(OUTPUT)/vdso_standalone_test_x86
+TEST_GEN_PROGS += vdso_standalone_test_x86
endif
-TEST_GEN_PROGS += $(OUTPUT)/vdso_test_correctness
+TEST_GEN_PROGS += vdso_test_correctness
CFLAGS := -std=gnu99
-CFLAGS_vdso_standalone_test_x86 := -nostdlib -fno-asynchronous-unwind-tables -fno-stack-protector
-LDFLAGS_vdso_test_correctness := -ldl
+
ifeq ($(CONFIG_X86_32),y)
LDLIBS += -lgcc_s
endif
-all: $(TEST_GEN_PROGS)
+include ../lib.mk
$(OUTPUT)/vdso_test_gettimeofday: parse_vdso.c vdso_test_gettimeofday.c
$(OUTPUT)/vdso_test_getcpu: parse_vdso.c vdso_test_getcpu.c
$(OUTPUT)/vdso_test_abi: parse_vdso.c vdso_test_abi.c
$(OUTPUT)/vdso_test_clock_getres: vdso_test_clock_getres.c
+
$(OUTPUT)/vdso_standalone_test_x86: vdso_standalone_test_x86.c parse_vdso.c
- $(CC) $(CFLAGS) $(CFLAGS_vdso_standalone_test_x86) \
- vdso_standalone_test_x86.c parse_vdso.c \
- -o $@
+$(OUTPUT)/vdso_standalone_test_x86: CFLAGS +=-nostdlib -fno-asynchronous-unwind-tables -fno-stack-protector
+
$(OUTPUT)/vdso_test_correctness: vdso_test_correctness.c
- $(CC) $(CFLAGS) \
- vdso_test_correctness.c \
- -o $@ \
- $(LDFLAGS_vdso_test_correctness)
+$(OUTPUT)/vdso_test_correctness: LDFLAGS += -ldl
@@ -55,14 +55,20 @@ static struct vdso_info
ELF(Verdef) *verdef;
} vdso_info;
-/* Straight from the ELF specification. */
-static unsigned long elf_hash(const unsigned char *name)
+/*
+ * Straight from the ELF specification...and then tweaked slightly, in order to
+ * avoid a few clang warnings.
+ */
+static unsigned long elf_hash(const char *name)
{
unsigned long h = 0, g;
- while (*name)
+ const unsigned char *uch_name = (const unsigned char *)name;
+
+ while (*uch_name)
{
- h = (h << 4) + *name++;
- if (g = h & 0xf0000000)
+ h = (h << 4) + *uch_name++;
+ g = h & 0xf0000000;
+ if (g)
h ^= g >> 24;
h &= ~g;
}
@@ -18,7 +18,7 @@
#include "parse_vdso.h"
-/* We need a libc functions... */
+/* We need some libc functions... */
int strcmp(const char *a, const char *b)
{
/* This implementation is buggy: it never returns -1. */
@@ -34,6 +34,20 @@ int strcmp(const char *a, const char *b)
return 0;
}
+/*
+ * The clang build needs this, although gcc does not.
+ * Stolen from lib/string.c.
+ */
+void *memcpy(void *dest, const void *src, size_t count)
+{
+ char *tmp = dest;
+ const char *s = src;
+
+ while (count--)
+ *tmp++ = *s++;
+ return dest;
+}
+
/* ...and two syscalls. This is x86-specific. */
static inline long x86_syscall3(long nr, long a0, long a1, long a2)
{
@@ -70,7 +84,7 @@ void to_base10(char *lastdig, time_t n)
}
}
-__attribute__((externally_visible)) void c_main(void **stack)
+void c_main(void **stack)
{
/* Parse the stack */
long argc = (long)*stack;
Hi Linus, Please pull this kselftest fixes update for Linux 6.10. This kselftest fixes update for Linux 6.10 consists of fixes to clang build failures to timerns, vDSO tests and fixes to vDSO makefile. Note: makefile fixes are included to avoid conflicts during 6.11 merge window. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 48236960c06d32370bfa6f2cc408e786873262c8: selftests/resctrl: Fix non-contiguous CBM for AMD (2024-06-26 13:22:34 -0600) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-fixes-6.10 for you to fetch changes up to 66cde337fa1b7c6cf31f856fa015bd91a4d383e7: selftests/vDSO: remove duplicate compiler invocations from Makefile (2024-07-05 14:12:34 -0600) ---------------------------------------------------------------- linux_kselftest-fixes-6.10 This kselftest fixes update for Linux 6.10 consists of fixes to clang build failures to timerns, vDSO tests and fixes to vDSO makefile. ---------------------------------------------------------------- John Hubbard (4): selftest/timerns: fix clang build failures for abs() calls selftests/vDSO: fix clang build errors and warnings selftests/vDSO: remove partially duplicated "all:" target in Makefile selftests/vDSO: remove duplicate compiler invocations from Makefile tools/testing/selftests/timens/exec.c | 6 ++--- tools/testing/selftests/timens/timer.c | 2 +- tools/testing/selftests/timens/timerfd.c | 2 +- tools/testing/selftests/timens/vfork_exec.c | 4 +-- tools/testing/selftests/vDSO/Makefile | 29 +++++++++------------- tools/testing/selftests/vDSO/parse_vdso.c | 16 ++++++++---- .../selftests/vDSO/vdso_standalone_test_x86.c | 18 ++++++++++++-- 7 files changed, 46 insertions(+), 31 deletions(-) ----------------------------------------------------------------