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authorLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 17:29:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 17:29:11 -0700
commit65090f30ab791810a3dc840317e57df05018559c (patch)
treef417526656da37109777e89613e140ffc59228bc /tools
parent349a2d52ffe59b7a0c5876fa7ee9f3eaf188b830 (diff)
parent0ed950d1f28142ccd9a9453c60df87853530d778 (diff)
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: "191 patches. Subsystems affected by this patch series: kthread, ia64, scripts, ntfs, squashfs, ocfs2, kernel/watchdog, and mm (gup, pagealloc, slab, slub, kmemleak, dax, debug, pagecache, gup, swap, memcg, pagemap, mprotect, bootmem, dma, tracing, vmalloc, kasan, initialization, pagealloc, and memory-failure)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (191 commits) mm,hwpoison: make get_hwpoison_page() call get_any_page() mm,hwpoison: send SIGBUS with error virutal address mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes mm/page_alloc: allow high-order pages to be stored on the per-cpu lists mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA docs: remove description of DISCONTIGMEM arch, mm: remove stale mentions of DISCONIGMEM mm: remove CONFIG_DISCONTIGMEM m68k: remove support for DISCONTIGMEM arc: remove support for DISCONTIGMEM arc: update comment about HIGHMEM implementation alpha: remove DISCONTIGMEM and NUMA mm/page_alloc: move free_the_page mm/page_alloc: fix counting of managed_pages mm/page_alloc: improve memmap_pages dbg msg mm: drop SECTION_SHIFT in code comments mm/page_alloc: introduce vm.percpu_pagelist_high_fraction mm/page_alloc: limit the number of pages on PCP lists when reclaim is active mm/page_alloc: scale the number of pages that are batch freed ...
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/vm/gup_test.c96
-rw-r--r--tools/vm/page_owner_sort.c4
2 files changed, 69 insertions, 31 deletions
diff --git a/tools/testing/selftests/vm/gup_test.c b/tools/testing/selftests/vm/gup_test.c
index 1e662d59c502..fe043f67798b 100644
--- a/tools/testing/selftests/vm/gup_test.c
+++ b/tools/testing/selftests/vm/gup_test.c
@@ -6,6 +6,8 @@
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
+#include <pthread.h>
+#include <assert.h>
#include "../../../../mm/gup_test.h"
#define MB (1UL << 20)
@@ -15,6 +17,12 @@
#define FOLL_WRITE 0x01 /* check pte is writable */
#define FOLL_TOUCH 0x02 /* mark page accessed */
+static unsigned long cmd = GUP_FAST_BENCHMARK;
+static int gup_fd, repeats = 1;
+static unsigned long size = 128 * MB;
+/* Serialize prints */
+static pthread_mutex_t print_mutex = PTHREAD_MUTEX_INITIALIZER;
+
static char *cmd_to_str(unsigned long cmd)
{
switch (cmd) {
@@ -34,17 +42,55 @@ static char *cmd_to_str(unsigned long cmd)
return "Unknown command";
}
+void *gup_thread(void *data)
+{
+ struct gup_test gup = *(struct gup_test *)data;
+ int i;
+
+ /* Only report timing information on the *_BENCHMARK commands: */
+ if ((cmd == PIN_FAST_BENCHMARK) || (cmd == GUP_FAST_BENCHMARK) ||
+ (cmd == PIN_LONGTERM_BENCHMARK)) {
+ for (i = 0; i < repeats; i++) {
+ gup.size = size;
+ if (ioctl(gup_fd, cmd, &gup))
+ perror("ioctl"), exit(1);
+
+ pthread_mutex_lock(&print_mutex);
+ printf("%s: Time: get:%lld put:%lld us",
+ cmd_to_str(cmd), gup.get_delta_usec,
+ gup.put_delta_usec);
+ if (gup.size != size)
+ printf(", truncated (size: %lld)", gup.size);
+ printf("\n");
+ pthread_mutex_unlock(&print_mutex);
+ }
+ } else {
+ gup.size = size;
+ if (ioctl(gup_fd, cmd, &gup)) {
+ perror("ioctl");
+ exit(1);
+ }
+
+ pthread_mutex_lock(&print_mutex);
+ printf("%s: done\n", cmd_to_str(cmd));
+ if (gup.size != size)
+ printf("Truncated (size: %lld)\n", gup.size);
+ pthread_mutex_unlock(&print_mutex);
+ }
+
+ return NULL;
+}
+
int main(int argc, char **argv)
{
struct gup_test gup = { 0 };
- unsigned long size = 128 * MB;
- int i, fd, filed, opt, nr_pages = 1, thp = -1, repeats = 1, write = 1;
- unsigned long cmd = GUP_FAST_BENCHMARK;
+ int filed, i, opt, nr_pages = 1, thp = -1, write = 1, nthreads = 1, ret;
int flags = MAP_PRIVATE, touch = 0;
char *file = "/dev/zero";
+ pthread_t *tid;
char *p;
- while ((opt = getopt(argc, argv, "m:r:n:F:f:abctTLUuwWSHpz")) != -1) {
+ while ((opt = getopt(argc, argv, "m:r:n:F:f:abcj:tTLUuwWSHpz")) != -1) {
switch (opt) {
case 'a':
cmd = PIN_FAST_BENCHMARK;
@@ -74,6 +120,9 @@ int main(int argc, char **argv)
/* strtol, so you can pass flags in hex form */
gup.gup_flags = strtol(optarg, 0, 0);
break;
+ case 'j':
+ nthreads = atoi(optarg);
+ break;
case 'm':
size = atoi(optarg) * MB;
break;
@@ -154,8 +203,8 @@ int main(int argc, char **argv)
if (write)
gup.gup_flags |= FOLL_WRITE;
- fd = open("/sys/kernel/debug/gup_test", O_RDWR);
- if (fd == -1) {
+ gup_fd = open("/sys/kernel/debug/gup_test", O_RDWR);
+ if (gup_fd == -1) {
perror("open");
exit(1);
}
@@ -185,32 +234,17 @@ int main(int argc, char **argv)
p[0] = 0;
}
- /* Only report timing information on the *_BENCHMARK commands: */
- if ((cmd == PIN_FAST_BENCHMARK) || (cmd == GUP_FAST_BENCHMARK) ||
- (cmd == PIN_LONGTERM_BENCHMARK)) {
- for (i = 0; i < repeats; i++) {
- gup.size = size;
- if (ioctl(fd, cmd, &gup))
- perror("ioctl"), exit(1);
-
- printf("%s: Time: get:%lld put:%lld us",
- cmd_to_str(cmd), gup.get_delta_usec,
- gup.put_delta_usec);
- if (gup.size != size)
- printf(", truncated (size: %lld)", gup.size);
- printf("\n");
- }
- } else {
- gup.size = size;
- if (ioctl(fd, cmd, &gup)) {
- perror("ioctl");
- exit(1);
- }
-
- printf("%s: done\n", cmd_to_str(cmd));
- if (gup.size != size)
- printf("Truncated (size: %lld)\n", gup.size);
+ tid = malloc(sizeof(pthread_t) * nthreads);
+ assert(tid);
+ for (i = 0; i < nthreads; i++) {
+ ret = pthread_create(&tid[i], NULL, gup_thread, &gup);
+ assert(ret == 0);
+ }
+ for (i = 0; i < nthreads; i++) {
+ ret = pthread_join(tid[i], NULL);
+ assert(ret == 0);
}
+ free(tid);
return 0;
}
diff --git a/tools/vm/page_owner_sort.c b/tools/vm/page_owner_sort.c
index 85eb65ea16d3..0e75f22c9475 100644
--- a/tools/vm/page_owner_sort.c
+++ b/tools/vm/page_owner_sort.c
@@ -132,6 +132,10 @@ int main(int argc, char **argv)
qsort(list, list_size, sizeof(list[0]), compare_txt);
list2 = malloc(sizeof(*list) * list_size);
+ if (!list2) {
+ printf("Out of memory\n");
+ exit(1);
+ }
printf("culling\n");