diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/vm/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/vm/hugetlbfstest.c | 86 | ||||
| -rwxr-xr-x | tools/testing/selftests/vm/run_vmtests | 13 | ||||
| -rw-r--r-- | tools/testing/selftests/vm/userfaultfd.c | 9 | ||||
| -rw-r--r-- | tools/vm/page-types.c | 35 |
5 files changed, 27 insertions, 117 deletions
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile index 0d6854744b37..d36fab7d8ebd 100644 --- a/tools/testing/selftests/vm/Makefile +++ b/tools/testing/selftests/vm/Makefile @@ -4,7 +4,6 @@ CFLAGS = -Wall BINARIES = compaction_test BINARIES += hugepage-mmap BINARIES += hugepage-shm -BINARIES += hugetlbfstest BINARIES += map_hugetlb BINARIES += thuge-gen BINARIES += transhuge-stress diff --git a/tools/testing/selftests/vm/hugetlbfstest.c b/tools/testing/selftests/vm/hugetlbfstest.c deleted file mode 100644 index 02e1072ec187..000000000000 --- a/tools/testing/selftests/vm/hugetlbfstest.c +++ /dev/null @@ -1,86 +0,0 @@ -#define _GNU_SOURCE -#include <assert.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -typedef unsigned long long u64; - -static size_t length = 1 << 24; - -static u64 read_rss(void) -{ - char buf[4096], *s = buf; - int i, fd; - u64 rss; - - fd = open("/proc/self/statm", O_RDONLY); - assert(fd > 2); - memset(buf, 0, sizeof(buf)); - read(fd, buf, sizeof(buf) - 1); - for (i = 0; i < 1; i++) - s = strchr(s, ' ') + 1; - rss = strtoull(s, NULL, 10); - return rss << 12; /* assumes 4k pagesize */ -} - -static void do_mmap(int fd, int extra_flags, int unmap) -{ - int *p; - int flags = MAP_PRIVATE | MAP_POPULATE | extra_flags; - u64 before, after; - int ret; - - before = read_rss(); - p = mmap(NULL, length, PROT_READ | PROT_WRITE, flags, fd, 0); - assert(p != MAP_FAILED || - !"mmap returned an unexpected error"); - after = read_rss(); - assert(llabs(after - before - length) < 0x40000 || - !"rss didn't grow as expected"); - if (!unmap) - return; - ret = munmap(p, length); - assert(!ret || !"munmap returned an unexpected error"); - after = read_rss(); - assert(llabs(after - before) < 0x40000 || - !"rss didn't shrink as expected"); -} - -static int open_file(const char *path) -{ - int fd, err; - - unlink(path); - fd = open(path, O_CREAT | O_RDWR | O_TRUNC | O_EXCL - | O_LARGEFILE | O_CLOEXEC, 0600); - assert(fd > 2); - unlink(path); - err = ftruncate(fd, length); - assert(!err); - return fd; -} - -int main(void) -{ - int hugefd, fd; - - fd = open_file("/dev/shm/hugetlbhog"); - hugefd = open_file("/hugepages/hugetlbhog"); - - system("echo 100 > /proc/sys/vm/nr_hugepages"); - do_mmap(-1, MAP_ANONYMOUS, 1); - do_mmap(fd, 0, 1); - do_mmap(-1, MAP_ANONYMOUS | MAP_HUGETLB, 1); - do_mmap(hugefd, 0, 1); - do_mmap(hugefd, MAP_HUGETLB, 1); - /* Leak the last one to test do_exit() */ - do_mmap(-1, MAP_ANONYMOUS | MAP_HUGETLB, 0); - printf("oll korrekt.\n"); - return 0; -} diff --git a/tools/testing/selftests/vm/run_vmtests b/tools/testing/selftests/vm/run_vmtests index 831adeb5fc55..9179ce8df485 100755 --- a/tools/testing/selftests/vm/run_vmtests +++ b/tools/testing/selftests/vm/run_vmtests @@ -75,16 +75,9 @@ else echo "[PASS]" fi -echo "--------------------" -echo "running hugetlbfstest" -echo "--------------------" -./hugetlbfstest -if [ $? -ne 0 ]; then - echo "[FAIL]" - exitcode=1 -else - echo "[PASS]" -fi +echo "NOTE: The above hugetlb tests provide minimal coverage. Use" +echo " https://github.com/libhugetlbfs/libhugetlbfs.git for" +echo " hugetlb regression testing." echo "--------------------" echo "running userfaultfd" diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index 76071b14cb93..2c7cca6f26a4 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -147,7 +147,8 @@ static void *locking_thread(void *arg) if (sizeof(page_nr) > sizeof(rand_nr)) { if (random_r(&rand, &rand_nr)) fprintf(stderr, "random_r 2 error\n"), exit(1); - page_nr |= ((unsigned long) rand_nr) << 32; + page_nr |= (((unsigned long) rand_nr) << 16) << + 16; } } else page_nr += 1; @@ -290,7 +291,8 @@ static void *uffd_poll_thread(void *arg) msg.event), exit(1); if (msg.arg.pagefault.flags & UFFD_PAGEFAULT_FLAG_WRITE) fprintf(stderr, "unexpected write fault\n"), exit(1); - offset = (char *)msg.arg.pagefault.address - area_dst; + offset = (char *)(unsigned long)msg.arg.pagefault.address - + area_dst; offset &= ~(page_size-1); if (copy_page(offset)) userfaults++; @@ -327,7 +329,8 @@ static void *uffd_read_thread(void *arg) if (bounces & BOUNCE_VERIFY && msg.arg.pagefault.flags & UFFD_PAGEFAULT_FLAG_WRITE) fprintf(stderr, "unexpected write fault\n"), exit(1); - offset = (char *)msg.arg.pagefault.address - area_dst; + offset = (char *)(unsigned long)msg.arg.pagefault.address - + area_dst; offset &= ~(page_size-1); if (copy_page(offset)) (*this_cpu_userfaults)++; diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c index 8bdf16b8ba60..7f73fa32a590 100644 --- a/tools/vm/page-types.c +++ b/tools/vm/page-types.c @@ -57,23 +57,15 @@ * pagemap kernel ABI bits */ -#define PM_ENTRY_BYTES sizeof(uint64_t) -#define PM_STATUS_BITS 3 -#define PM_STATUS_OFFSET (64 - PM_STATUS_BITS) -#define PM_STATUS_MASK (((1LL << PM_STATUS_BITS) - 1) << PM_STATUS_OFFSET) -#define PM_STATUS(nr) (((nr) << PM_STATUS_OFFSET) & PM_STATUS_MASK) -#define PM_PSHIFT_BITS 6 -#define PM_PSHIFT_OFFSET (PM_STATUS_OFFSET - PM_PSHIFT_BITS) -#define PM_PSHIFT_MASK (((1LL << PM_PSHIFT_BITS) - 1) << PM_PSHIFT_OFFSET) -#define __PM_PSHIFT(x) (((uint64_t) (x) << PM_PSHIFT_OFFSET) & PM_PSHIFT_MASK) -#define PM_PFRAME_MASK ((1LL << PM_PSHIFT_OFFSET) - 1) -#define PM_PFRAME(x) ((x) & PM_PFRAME_MASK) - -#define __PM_SOFT_DIRTY (1LL) -#define PM_PRESENT PM_STATUS(4LL) -#define PM_SWAP PM_STATUS(2LL) -#define PM_SOFT_DIRTY __PM_PSHIFT(__PM_SOFT_DIRTY) - +#define PM_ENTRY_BYTES 8 +#define PM_PFRAME_BITS 55 +#define PM_PFRAME_MASK ((1LL << PM_PFRAME_BITS) - 1) +#define PM_PFRAME(x) ((x) & PM_PFRAME_MASK) +#define PM_SOFT_DIRTY (1ULL << 55) +#define PM_MMAP_EXCLUSIVE (1ULL << 56) +#define PM_FILE (1ULL << 61) +#define PM_SWAP (1ULL << 62) +#define PM_PRESENT (1ULL << 63) /* * kernel page flags @@ -100,6 +92,8 @@ #define KPF_SLOB_FREE 49 #define KPF_SLUB_FROZEN 50 #define KPF_SLUB_DEBUG 51 +#define KPF_FILE 62 +#define KPF_MMAP_EXCLUSIVE 63 #define KPF_ALL_BITS ((uint64_t)~0ULL) #define KPF_HACKERS_BITS (0xffffULL << 32) @@ -149,6 +143,9 @@ static const char * const page_flag_names[] = { [KPF_SLOB_FREE] = "P:slob_free", [KPF_SLUB_FROZEN] = "A:slub_frozen", [KPF_SLUB_DEBUG] = "E:slub_debug", + + [KPF_FILE] = "F:file", + [KPF_MMAP_EXCLUSIVE] = "1:mmap_exclusive", }; @@ -452,6 +449,10 @@ static uint64_t expand_overloaded_flags(uint64_t flags, uint64_t pme) if (pme & PM_SOFT_DIRTY) flags |= BIT(SOFTDIRTY); + if (pme & PM_FILE) + flags |= BIT(FILE); + if (pme & PM_MMAP_EXCLUSIVE) + flags |= BIT(MMAP_EXCLUSIVE); return flags; } |