The patch titled
Subject: selftests/mm: rename uffd_stats to uffd_args
has been added to the -mm mm-unstable branch. Its filename is
selftests-mm-rename-uffd_stats-to-uffd_args.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-rename-uffd_stats-to-uffd_args.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Peter Xu <peterx@xxxxxxxxxx>
Subject: selftests/mm: rename uffd_stats to uffd_args
Date: Wed, 12 Apr 2023 12:43:37 -0400
Prepare for adding more fields into the struct.
Link: https://lkml.kernel.org/r/20230412164337.328607-1-peterx@xxxxxxxxxx
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
Suggested-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Cc: Axel Rasmussen <axelrasmussen@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Dmitry Safonov <0x7f454c46@xxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Zach O'Keefe <zokeefe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/uffd-common.c | 28 +++++------
tools/testing/selftests/mm/uffd-common.h | 6 +-
tools/testing/selftests/mm/uffd-stress.c | 51 ++++++++++-----------
3 files changed, 42 insertions(+), 43 deletions(-)
--- a/tools/testing/selftests/mm/uffd-common.c~selftests-mm-rename-uffd_stats-to-uffd_args
+++ a/tools/testing/selftests/mm/uffd-common.c
@@ -186,34 +186,34 @@ struct uffd_test_ops hugetlb_uffd_test_o
.check_pmd_mapping = NULL,
};
-void uffd_stats_report(struct uffd_stats *stats, int n_cpus)
+void uffd_stats_report(struct uffd_args *args, int n_cpus)
{
int i;
unsigned long long miss_total = 0, wp_total = 0, minor_total = 0;
for (i = 0; i < n_cpus; i++) {
- miss_total += stats[i].missing_faults;
- wp_total += stats[i].wp_faults;
- minor_total += stats[i].minor_faults;
+ miss_total += args[i].missing_faults;
+ wp_total += args[i].wp_faults;
+ minor_total += args[i].minor_faults;
}
printf("userfaults: ");
if (miss_total) {
printf("%llu missing (", miss_total);
for (i = 0; i < n_cpus; i++)
- printf("%lu+", stats[i].missing_faults);
+ printf("%lu+", args[i].missing_faults);
printf("\b) ");
}
if (wp_total) {
printf("%llu wp (", wp_total);
for (i = 0; i < n_cpus; i++)
- printf("%lu+", stats[i].wp_faults);
+ printf("%lu+", args[i].wp_faults);
printf("\b) ");
}
if (minor_total) {
printf("%llu minor (", minor_total);
for (i = 0; i < n_cpus; i++)
- printf("%lu+", stats[i].minor_faults);
+ printf("%lu+", args[i].minor_faults);
printf("\b)");
}
printf("\n");
@@ -397,7 +397,7 @@ int uffd_read_msg(int ufd, struct uffd_m
return 0;
}
-void uffd_handle_page_fault(struct uffd_msg *msg, struct uffd_stats *stats)
+void uffd_handle_page_fault(struct uffd_msg *msg, struct uffd_args *args)
{
unsigned long offset;
@@ -407,7 +407,7 @@ void uffd_handle_page_fault(struct uffd_
if (msg->arg.pagefault.flags & UFFD_PAGEFAULT_FLAG_WP) {
/* Write protect page faults */
wp_range(uffd, msg->arg.pagefault.address, page_size, false);
- stats->wp_faults++;
+ args->wp_faults++;
} else if (msg->arg.pagefault.flags & UFFD_PAGEFAULT_FLAG_MINOR) {
uint8_t *area;
int b;
@@ -430,7 +430,7 @@ void uffd_handle_page_fault(struct uffd_
for (b = 0; b < page_size; ++b)
area[b] = ~area[b];
continue_range(uffd, msg->arg.pagefault.address, page_size);
- stats->minor_faults++;
+ args->minor_faults++;
} else {
/*
* Missing page faults.
@@ -460,14 +460,14 @@ void uffd_handle_page_fault(struct uffd_
offset &= ~(page_size-1);
if (copy_page(uffd, offset))
- stats->missing_faults++;
+ args->missing_faults++;
}
}
void *uffd_poll_thread(void *arg)
{
- struct uffd_stats *stats = (struct uffd_stats *)arg;
- unsigned long cpu = stats->cpu;
+ struct uffd_args *args = (struct uffd_args *)arg;
+ unsigned long cpu = args->cpu;
struct pollfd pollfd[2];
struct uffd_msg msg;
struct uffdio_register uffd_reg;
@@ -502,7 +502,7 @@ void *uffd_poll_thread(void *arg)
err("unexpected msg event %u\n", msg.event);
break;
case UFFD_EVENT_PAGEFAULT:
- uffd_handle_page_fault(&msg, stats);
+ uffd_handle_page_fault(&msg, args);
break;
case UFFD_EVENT_FORK:
close(uffd);
--- a/tools/testing/selftests/mm/uffd-common.h~selftests-mm-rename-uffd_stats-to-uffd_args
+++ a/tools/testing/selftests/mm/uffd-common.h
@@ -70,7 +70,7 @@
- 1)))
/* Userfaultfd test statistics */
-struct uffd_stats {
+struct uffd_args {
int cpu;
unsigned long missing_faults;
unsigned long wp_faults;
@@ -98,12 +98,12 @@ extern uffd_test_ops_t shmem_uffd_test_o
extern uffd_test_ops_t hugetlb_uffd_test_ops;
extern uffd_test_ops_t *uffd_test_ops;
-void uffd_stats_report(struct uffd_stats *stats, int n_cpus);
+void uffd_stats_report(struct uffd_args *args, int n_cpus);
void uffd_test_ctx_init(uint64_t features);
void userfaultfd_open(uint64_t *features);
int uffd_read_msg(int ufd, struct uffd_msg *msg);
void wp_range(int ufd, __u64 start, __u64 len, bool wp);
-void uffd_handle_page_fault(struct uffd_msg *msg, struct uffd_stats *stats);
+void uffd_handle_page_fault(struct uffd_msg *msg, struct uffd_args *args);
int __copy_page(int ufd, unsigned long offset, bool retry);
int copy_page(int ufd, unsigned long offset);
void *uffd_poll_thread(void *arg);
--- a/tools/testing/selftests/mm/uffd-stress.c~selftests-mm-rename-uffd_stats-to-uffd_args
+++ a/tools/testing/selftests/mm/uffd-stress.c
@@ -90,16 +90,15 @@ static void usage(void)
exit(1);
}
-static void uffd_stats_reset(struct uffd_stats *uffd_stats,
- unsigned long n_cpus)
+static void uffd_stats_reset(struct uffd_args *args, unsigned long n_cpus)
{
int i;
for (i = 0; i < n_cpus; i++) {
- uffd_stats[i].cpu = i;
- uffd_stats[i].missing_faults = 0;
- uffd_stats[i].wp_faults = 0;
- uffd_stats[i].minor_faults = 0;
+ args[i].cpu = i;
+ args[i].missing_faults = 0;
+ args[i].wp_faults = 0;
+ args[i].minor_faults = 0;
}
}
@@ -163,7 +162,7 @@ pthread_mutex_t uffd_read_mutex = PTHREA
static void *uffd_read_thread(void *arg)
{
- struct uffd_stats *stats = (struct uffd_stats *)arg;
+ struct uffd_args *args = (struct uffd_args *)arg;
struct uffd_msg msg;
pthread_mutex_unlock(&uffd_read_mutex);
@@ -172,7 +171,7 @@ static void *uffd_read_thread(void *arg)
for (;;) {
if (uffd_read_msg(uffd, &msg))
continue;
- uffd_handle_page_fault(&msg, stats);
+ uffd_handle_page_fault(&msg, args);
}
return NULL;
@@ -210,7 +209,7 @@ static void *background_thread(void *arg
return NULL;
}
-static int stress(struct uffd_stats *uffd_stats)
+static int stress(struct uffd_args *args)
{
unsigned long cpu;
pthread_t locking_threads[nr_cpus];
@@ -225,12 +224,12 @@ static int stress(struct uffd_stats *uff
if (bounces & BOUNCE_POLL) {
if (pthread_create(&uffd_threads[cpu], &attr,
uffd_poll_thread,
- (void *)&uffd_stats[cpu]))
+ (void *)&args[cpu]))
return 1;
} else {
if (pthread_create(&uffd_threads[cpu], &attr,
uffd_read_thread,
- (void *)&uffd_stats[cpu]))
+ (void *)&args[cpu]))
return 1;
pthread_mutex_lock(&uffd_read_mutex);
}
@@ -264,7 +263,7 @@ static int stress(struct uffd_stats *uff
if (write(pipefd[cpu*2+1], &c, 1) != 1)
err("pipefd write error");
if (pthread_join(uffd_threads[cpu],
- (void *)&uffd_stats[cpu]))
+ (void *)&args[cpu]))
return 1;
} else {
if (pthread_cancel(uffd_threads[cpu]))
@@ -493,7 +492,7 @@ static int userfaultfd_events_test(void)
int err, features;
pid_t pid;
char c;
- struct uffd_stats stats = { 0 };
+ struct uffd_args args = { 0 };
printf("testing events (fork, remap, remove): ");
fflush(stdout);
@@ -508,7 +507,7 @@ static int userfaultfd_events_test(void)
true, test_uffdio_wp, false))
err("register failure");
- if (pthread_create(&uffd_mon, &attr, uffd_poll_thread, &stats))
+ if (pthread_create(&uffd_mon, &attr, uffd_poll_thread, &args))
err("uffd_poll_thread create");
pid = fork();
@@ -526,9 +525,9 @@ static int userfaultfd_events_test(void)
if (pthread_join(uffd_mon, NULL))
return 1;
- uffd_stats_report(&stats, 1);
+ uffd_stats_report(&args, 1);
- return stats.missing_faults != nr_pages;
+ return args.missing_faults != nr_pages;
}
static int userfaultfd_sig_test(void)
@@ -538,7 +537,7 @@ static int userfaultfd_sig_test(void)
int err, features;
pid_t pid;
char c;
- struct uffd_stats stats = { 0 };
+ struct uffd_args args = { 0 };
printf("testing signal delivery: ");
fflush(stdout);
@@ -557,7 +556,7 @@ static int userfaultfd_sig_test(void)
uffd_test_ops->release_pages(area_dst);
- if (pthread_create(&uffd_mon, &attr, uffd_poll_thread, &stats))
+ if (pthread_create(&uffd_mon, &attr, uffd_poll_thread, &args))
err("uffd_poll_thread create");
pid = fork();
@@ -606,7 +605,7 @@ static int userfaultfd_minor_test(void)
unsigned long p;
pthread_t uffd_mon;
char c;
- struct uffd_stats stats = { 0 };
+ struct uffd_args args = { 0 };
if (!test_uffdio_minor)
return 0;
@@ -629,7 +628,7 @@ static int userfaultfd_minor_test(void)
page_size);
}
- if (pthread_create(&uffd_mon, &attr, uffd_poll_thread, &stats))
+ if (pthread_create(&uffd_mon, &attr, uffd_poll_thread, &args))
err("uffd_poll_thread create");
/*
@@ -645,7 +644,7 @@ static int userfaultfd_minor_test(void)
if (pthread_join(uffd_mon, NULL))
return 1;
- uffd_stats_report(&stats, 1);
+ uffd_stats_report(&args, 1);
if (test_collapse) {
printf("testing collapse of uffd memory into PMD-mapped THPs:");
@@ -664,7 +663,7 @@ static int userfaultfd_minor_test(void)
printf(" done.\n");
}
- return stats.missing_faults != 0 || stats.minor_faults != nr_pages;
+ return args.missing_faults != 0 || args.minor_faults != nr_pages;
}
static int pagemap_open(void)
@@ -822,7 +821,7 @@ static int userfaultfd_stress(void)
{
void *area;
unsigned long nr;
- struct uffd_stats uffd_stats[nr_cpus];
+ struct uffd_args args[nr_cpus];
uint64_t mem_size = nr_pages * page_size;
uffd_test_ctx_init(UFFD_FEATURE_WP_UNPOPULATED);
@@ -894,10 +893,10 @@ static int userfaultfd_stress(void)
*/
uffd_test_ops->release_pages(area_dst);
- uffd_stats_reset(uffd_stats, nr_cpus);
+ uffd_stats_reset(args, nr_cpus);
/* bounce pass */
- if (stress(uffd_stats))
+ if (stress(args))
return 1;
/* Clear all the write protections if there is any */
@@ -926,7 +925,7 @@ static int userfaultfd_stress(void)
swap(area_src_alias, area_dst_alias);
- uffd_stats_report(uffd_stats, nr_cpus);
+ uffd_stats_report(args, nr_cpus);
}
if (test_type == TEST_ANON) {
_
Patches currently in -mm which might be from peterx@xxxxxxxxxx are
mm-khugepaged-check-again-on-anon-uffd-wp-during-isolation.patch
revert-userfaultfd-dont-fail-on-unrecognized-features.patch
selftests-mm-update-gitignore-with-two-missing-tests.patch
selftests-mm-dump-a-summary-in-run_vmtestssh.patch
selftests-mm-merge-utilh-into-vm_utilh.patch
selftests-mm-use-test_gen_progs-where-proper.patch
selftests-mm-link-vm_utilc-always.patch
selftests-mm-merge-default_huge_page_size-into-one.patch
selftests-mm-use-pm_-macros-in-vm_utilsh.patch
selftests-mm-reuse-pagemap_get_entry-in-vm_utilh.patch
selftests-mm-test-uffdio_zeropage-only-when-hugetlb.patch
selftests-mm-drop-test_uffdio_zeropage_eexist.patch
selftests-mm-create-uffd-common.patch
selftests-mm-split-uffd-tests-into-uffd-stress-and-uffd-unit-tests.patch
selftests-mm-uffd_register.patch
selftests-mm-uffd_open_devsys.patch
selftests-mm-uffdio_api-test.patch
selftests-mm-drop-global-mem_fd-in-uffd-tests.patch
selftests-mm-drop-global-hpage_size-in-uffd-tests.patch
selftests-mm-rename-uffd_stats-to-uffd_args.patch
selftests-mm-let-uffd_handle_page_fault-take-wp-parameter.patch
selftests-mm-allow-allocate_area-to-fail-properly.patch
selftests-mm-add-framework-for-uffd-unit-test.patch
selftests-mm-move-uffd-pagemap-test-to-unit-test.patch
selftests-mm-move-uffd-minor-test-to-unit-test.patch
selftests-mm-move-uffd-sig-events-tests-into-uffd-unit-tests.patch
selftests-mm-move-zeropage-test-into-uffd-unit-tests.patch
selftests-mm-workaround-no-way-to-detect-uffd-minor-wp.patch
selftests-mm-allow-uffd-test-to-skip-properly-with-no-privilege.patch
selftests-mm-drop-sys-dev-test-in-uffd-stress-test.patch
selftests-mm-add-shmem-private-test-to-uffd-stress.patch
selftests-mm-add-uffdio-register-ioctls-test.patch
