diff options
Diffstat (limited to 'tools/testing/selftests/vm')
-rw-r--r-- | tools/testing/selftests/vm/.gitignore | 2 | ||||
-rw-r--r-- | tools/testing/selftests/vm/Makefile | 2 | ||||
-rw-r--r-- | tools/testing/selftests/vm/compaction_test.c | 1 | ||||
-rw-r--r-- | tools/testing/selftests/vm/gup_benchmark.c | 91 | ||||
-rw-r--r-- | tools/testing/selftests/vm/hugepage-mmap.c | 1 | ||||
-rw-r--r-- | tools/testing/selftests/vm/hugepage-shm.c | 1 | ||||
-rw-r--r-- | tools/testing/selftests/vm/map_hugetlb.c | 1 | ||||
-rw-r--r-- | tools/testing/selftests/vm/mlock-random-test.c | 1 | ||||
-rw-r--r-- | tools/testing/selftests/vm/mlock2-tests.c | 1 | ||||
-rw-r--r-- | tools/testing/selftests/vm/mlock2.h | 1 | ||||
-rw-r--r-- | tools/testing/selftests/vm/on-fault-limit.c | 1 | ||||
-rwxr-xr-x | tools/testing/selftests/vm/run_vmtests | 1 | ||||
-rw-r--r-- | tools/testing/selftests/vm/thuge-gen.c | 1 |
13 files changed, 105 insertions, 0 deletions
diff --git a/tools/testing/selftests/vm/.gitignore b/tools/testing/selftests/vm/.gitignore index 142c565bb351..1ca2ee4d15b9 100644 --- a/tools/testing/selftests/vm/.gitignore +++ b/tools/testing/selftests/vm/.gitignore @@ -8,3 +8,5 @@ on-fault-limit transhuge-stress userfaultfd mlock-intersect-test +mlock-random-test +virtual_address_range diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile index cbb29e41ef2b..7f45806bd863 100644 --- a/tools/testing/selftests/vm/Makefile +++ b/tools/testing/selftests/vm/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # Makefile for vm selftests ifndef OUTPUT @@ -17,6 +18,7 @@ TEST_GEN_FILES += transhuge-stress TEST_GEN_FILES += userfaultfd TEST_GEN_FILES += mlock-random-test TEST_GEN_FILES += virtual_address_range +TEST_GEN_FILES += gup_benchmark TEST_PROGS := run_vmtests diff --git a/tools/testing/selftests/vm/compaction_test.c b/tools/testing/selftests/vm/compaction_test.c index 6d1437f895b8..a65b016d4c13 100644 --- a/tools/testing/selftests/vm/compaction_test.c +++ b/tools/testing/selftests/vm/compaction_test.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * * A test for the patch "Allow compaction of unevictable pages". diff --git a/tools/testing/selftests/vm/gup_benchmark.c b/tools/testing/selftests/vm/gup_benchmark.c new file mode 100644 index 000000000000..36df55132036 --- /dev/null +++ b/tools/testing/selftests/vm/gup_benchmark.c @@ -0,0 +1,91 @@ +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/prctl.h> +#include <sys/stat.h> +#include <sys/types.h> + +#include <linux/types.h> + +#define MB (1UL << 20) +#define PAGE_SIZE sysconf(_SC_PAGESIZE) + +#define GUP_FAST_BENCHMARK _IOWR('g', 1, struct gup_benchmark) + +struct gup_benchmark { + __u64 delta_usec; + __u64 addr; + __u64 size; + __u32 nr_pages_per_call; + __u32 flags; +}; + +int main(int argc, char **argv) +{ + struct gup_benchmark gup; + unsigned long size = 128 * MB; + int i, fd, opt, nr_pages = 1, thp = -1, repeats = 1, write = 0; + char *p; + + while ((opt = getopt(argc, argv, "m:r:n:tT")) != -1) { + switch (opt) { + case 'm': + size = atoi(optarg) * MB; + break; + case 'r': + repeats = atoi(optarg); + break; + case 'n': + nr_pages = atoi(optarg); + break; + case 't': + thp = 1; + break; + case 'T': + thp = 0; + break; + case 'w': + write = 1; + default: + return -1; + } + } + + gup.nr_pages_per_call = nr_pages; + gup.flags = write; + + fd = open("/sys/kernel/debug/gup_benchmark", O_RDWR); + if (fd == -1) + perror("open"), exit(1); + + p = mmap(NULL, size, PROT_READ | PROT_WRITE, + MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); + if (p == MAP_FAILED) + perror("mmap"), exit(1); + gup.addr = (unsigned long)p; + + if (thp == 1) + madvise(p, size, MADV_HUGEPAGE); + else if (thp == 0) + madvise(p, size, MADV_NOHUGEPAGE); + + for (; (unsigned long)p < gup.addr + size; p += PAGE_SIZE) + p[0] = 0; + + for (i = 0; i < repeats; i++) { + gup.size = size; + if (ioctl(fd, GUP_FAST_BENCHMARK, &gup)) + perror("ioctl"), exit(1); + + printf("Time: %lld us", gup.delta_usec); + if (gup.size != size) + printf(", truncated (size: %lld)", gup.size); + printf("\n"); + } + + return 0; +} diff --git a/tools/testing/selftests/vm/hugepage-mmap.c b/tools/testing/selftests/vm/hugepage-mmap.c index a10f310d2362..93f9e7b81331 100644 --- a/tools/testing/selftests/vm/hugepage-mmap.c +++ b/tools/testing/selftests/vm/hugepage-mmap.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * hugepage-mmap: * diff --git a/tools/testing/selftests/vm/hugepage-shm.c b/tools/testing/selftests/vm/hugepage-shm.c index 0d0ef4fc0c04..e2527f32005b 100644 --- a/tools/testing/selftests/vm/hugepage-shm.c +++ b/tools/testing/selftests/vm/hugepage-shm.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * hugepage-shm: * diff --git a/tools/testing/selftests/vm/map_hugetlb.c b/tools/testing/selftests/vm/map_hugetlb.c index 77687ab59f77..9b777fa95f09 100644 --- a/tools/testing/selftests/vm/map_hugetlb.c +++ b/tools/testing/selftests/vm/map_hugetlb.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Example of using hugepage memory in a user application using the mmap * system call with MAP_HUGETLB flag. Before running this program make diff --git a/tools/testing/selftests/vm/mlock-random-test.c b/tools/testing/selftests/vm/mlock-random-test.c index 83de4f58d262..ff4d72eb74b9 100644 --- a/tools/testing/selftests/vm/mlock-random-test.c +++ b/tools/testing/selftests/vm/mlock-random-test.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * It tests the mlock/mlock2() when they are invoked * on randomly memory region. diff --git a/tools/testing/selftests/vm/mlock2-tests.c b/tools/testing/selftests/vm/mlock2-tests.c index e5dbc87b4297..4997b9222cfa 100644 --- a/tools/testing/selftests/vm/mlock2-tests.c +++ b/tools/testing/selftests/vm/mlock2-tests.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #define _GNU_SOURCE #include <sys/mman.h> #include <stdint.h> diff --git a/tools/testing/selftests/vm/mlock2.h b/tools/testing/selftests/vm/mlock2.h index 7ee062929d3e..2a6e76c226bc 100644 --- a/tools/testing/selftests/vm/mlock2.h +++ b/tools/testing/selftests/vm/mlock2.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #include <syscall.h> #include <errno.h> #include <stdio.h> diff --git a/tools/testing/selftests/vm/on-fault-limit.c b/tools/testing/selftests/vm/on-fault-limit.c index 7f96a5c2e292..634d87dfb2a4 100644 --- a/tools/testing/selftests/vm/on-fault-limit.c +++ b/tools/testing/selftests/vm/on-fault-limit.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include <sys/mman.h> #include <stdio.h> #include <unistd.h> diff --git a/tools/testing/selftests/vm/run_vmtests b/tools/testing/selftests/vm/run_vmtests index 07548a1fa901..cc826326de87 100755 --- a/tools/testing/selftests/vm/run_vmtests +++ b/tools/testing/selftests/vm/run_vmtests @@ -1,4 +1,5 @@ #!/bin/bash +# SPDX-License-Identifier: GPL-2.0 #please run as root #we need 256M, below is the size in kB diff --git a/tools/testing/selftests/vm/thuge-gen.c b/tools/testing/selftests/vm/thuge-gen.c index 88a2ab535e01..361ef7192cc6 100644 --- a/tools/testing/selftests/vm/thuge-gen.c +++ b/tools/testing/selftests/vm/thuge-gen.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Test selecting other page sizes for mmap/shmget. Before running this huge pages for each huge page size must have been |