| Message ID | 20230412164337.328607-1-peterx@redhat.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | selftests/mm: Split / Refactor userfault test | expand |
On Wed, Apr 12, 2023 at 12:43:37PM -0400, Peter Xu wrote: > Prepare for adding more fields into the struct. > > Suggested-by: Mike Rapoport (IBM) <rppt@kernel.org> > Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org> > --- > 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(-) > > diff --git a/tools/testing/selftests/mm/uffd-common.c b/tools/testing/selftests/mm/uffd-common.c > index f02dfcf10714..e746405aa8f3 100644 > --- a/tools/testing/selftests/mm/uffd-common.c > +++ b/tools/testing/selftests/mm/uffd-common.c > @@ -186,34 +186,34 @@ struct uffd_test_ops hugetlb_uffd_test_ops = { > .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_msg *msg) > 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_msg *msg, struct uffd_stats *stats) > 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_msg *msg, struct uffd_stats *stats) > 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_msg *msg, struct uffd_stats *stats) > 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); > diff --git a/tools/testing/selftests/mm/uffd-common.h b/tools/testing/selftests/mm/uffd-common.h > index 47565b2f2dee..f8d2ad178827 100644 > --- a/tools/testing/selftests/mm/uffd-common.h > +++ b/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_ops; > 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); > diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c > index 54fc9b4ffa3c..ce7251ab93ef 100644 > --- a/tools/testing/selftests/mm/uffd-stress.c > +++ b/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 = PTHREAD_MUTEX_INITIALIZER; > > 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 *uffd_stats) > 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 *uffd_stats) > 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) { > -- > 2.39.1 >
diff --git a/tools/testing/selftests/mm/uffd-common.c b/tools/testing/selftests/mm/uffd-common.c index f02dfcf10714..e746405aa8f3 100644 --- a/tools/testing/selftests/mm/uffd-common.c +++ b/tools/testing/selftests/mm/uffd-common.c @@ -186,34 +186,34 @@ struct uffd_test_ops hugetlb_uffd_test_ops = { .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_msg *msg) 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_msg *msg, struct uffd_stats *stats) 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_msg *msg, struct uffd_stats *stats) 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_msg *msg, struct uffd_stats *stats) 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); diff --git a/tools/testing/selftests/mm/uffd-common.h b/tools/testing/selftests/mm/uffd-common.h index 47565b2f2dee..f8d2ad178827 100644 --- a/tools/testing/selftests/mm/uffd-common.h +++ b/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_ops; 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); diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c index 54fc9b4ffa3c..ce7251ab93ef 100644 --- a/tools/testing/selftests/mm/uffd-stress.c +++ b/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 = PTHREAD_MUTEX_INITIALIZER; 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 *uffd_stats) 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 *uffd_stats) 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) {
Prepare for adding more fields into the struct. Suggested-by: Mike Rapoport (IBM) <rppt@kernel.org> Signed-off-by: Peter Xu <peterx@redhat.com> --- 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(-)