mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-28 21:33:52 +00:00
Code Issues Releases Wiki Activity

selftests/mm: transhuge-stress: conform to TAP format output

Browse source 
Conform the layout, informational and status messages to TAP.  No
functional change is intended other than the layout of output messages.

Link: https://lkml.kernel.org/r/20240202113119.2047740-12-usama.anjum@collabora.com
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Muhammad Usama Anjum 2024-02-02 16:31:18 +05:00 committed by Andrew Morton
parent b38bd9b2c4
commit c811b0ce12
2 changed files with 25 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
tools/testing/selftests/mm/transhuge-stress.c
View file

@ -16,6 +16,7 @@
#include <string.h>
#include <sys/mman.h>
#include "vm_util.h"
#include "../kselftest.h"
int backing_fd = -1;
int mmap_flags = MAP_ANONYMOUS | MAP_NORESERVE | MAP_PRIVATE;
@ -34,6 +35,8 @@ int main(int argc, char **argv)
int pagemap_fd;
int duration = 0;
ksft_print_header();
ram = sysconf(_SC_PHYS_PAGES);
if (ram > SIZE_MAX / psize() / 4)
ram = SIZE_MAX / 4;
@ -43,7 +46,8 @@ int main(int argc, char **argv)
while (++i < argc) {
if (!strcmp(argv[i], "-h"))
errx(1, "usage: %s [-f <filename>] [-d <duration>] [size in MiB]", argv[0]);
ksft_exit_fail_msg("usage: %s [-f <filename>] [-d <duration>] [size in MiB]\n",
argv[0]);
else if (!strcmp(argv[i], "-f"))
name = argv[++i];
else if (!strcmp(argv[i], "-d"))
@ -52,10 +56,12 @@ int main(int argc, char **argv)
len = atoll(argv[i]) << 20;
}
ksft_set_plan(1);
if (name) {
backing_fd = open(name, O_RDWR);
if (backing_fd == -1)
errx(2, "open %s", name);
ksft_exit_fail_msg("open %s\n", name);
mmap_flags = MAP_SHARED;
}
@ -65,21 +71,21 @@ int main(int argc, char **argv)
pagemap_fd = open("/proc/self/pagemap", O_RDONLY);
if (pagemap_fd < 0)
err(2, "open pagemap");
ksft_exit_fail_msg("open pagemap\n");
len -= len % HPAGE_SIZE;
ptr = mmap(NULL, len + HPAGE_SIZE, PROT_RW, mmap_flags, backing_fd, 0);
if (ptr == MAP_FAILED)
err(2, "initial mmap");
ksft_exit_fail_msg("initial mmap");
ptr += HPAGE_SIZE - (uintptr_t)ptr % HPAGE_SIZE;
if (madvise(ptr, len, MADV_HUGEPAGE))
err(2, "MADV_HUGEPAGE");
ksft_exit_fail_msg("MADV_HUGEPAGE");
map_len = ram >> (HPAGE_SHIFT - 1);
map = malloc(map_len);
if (!map)
errx(2, "map malloc");
ksft_exit_fail_msg("map malloc\n");
clock_gettime(CLOCK_MONOTONIC, &start);
@ -103,7 +109,7 @@ int main(int argc, char **argv)
if (idx >= map_len) {
map = realloc(map, idx + 1);
if (!map)
errx(2, "map realloc");
ksft_exit_fail_msg("map realloc\n");
memset(map + map_len, 0, idx + 1 - map_len);
map_len = idx + 1;
}
@ -114,17 +120,19 @@ int main(int argc, char **argv)
/* split transhuge page, keep last page */
if (madvise(p, HPAGE_SIZE - psize(), MADV_DONTNEED))
err(2, "MADV_DONTNEED");
ksft_exit_fail_msg("MADV_DONTNEED");
}
clock_gettime(CLOCK_MONOTONIC, &b);
s = b.tv_sec - a.tv_sec + (b.tv_nsec - a.tv_nsec) / 1000000000.;
warnx("%.3f s/loop, %.3f ms/page, %10.3f MiB/s\t"
"%4d succeed, %4d failed, %4d different pages",
s, s * 1000 / (len >> HPAGE_SHIFT), len / s / (1 << 20),
nr_succeed, nr_failed, nr_pages);
ksft_print_msg("%.3f s/loop, %.3f ms/page, %10.3f MiB/s\t"
"%4d succeed, %4d failed, %4d different pages\n",
s, s * 1000 / (len >> HPAGE_SHIFT), len / s / (1 << 20),
nr_succeed, nr_failed, nr_pages);
if (duration > 0 && b.tv_sec - start.tv_sec >= duration)
return 0;
if (duration > 0 && b.tv_sec - start.tv_sec >= duration) {
ksft_test_result_pass("Completed\n");
ksft_finished();
}
}
}

6
tools/testing/selftests/mm/vm_util.c
View file

@ -232,17 +232,17 @@ int64_t allocate_transhuge(void *ptr, int pagemap_fd)
if (mmap(ptr, HPAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_ANONYMOUS |
MAP_NORESERVE | MAP_PRIVATE, -1, 0) != ptr)
errx(2, "mmap transhuge");
ksft_exit_fail_msg("mmap transhuge\n");
if (madvise(ptr, HPAGE_SIZE, MADV_HUGEPAGE))
err(2, "MADV_HUGEPAGE");
ksft_exit_fail_msg("MADV_HUGEPAGE\n");
/* allocate transparent huge page */
*(volatile void **)ptr = ptr;
if (pread(pagemap_fd, ent, sizeof(ent),
(uintptr_t)ptr >> (pshift() - 3)) != sizeof(ent))
err(2, "read pagemap");
ksft_exit_fail_msg("read pagemap\n");
if (PAGEMAP_PRESENT(ent[0]) && PAGEMAP_PRESENT(ent[1]) &&
PAGEMAP_PFN(ent[0]) + 1 == PAGEMAP_PFN(ent[1]) &&