[PATCH v2 6/8] selftests/mm: Mark unused arguments with __unused

[Muhammad Usama Anjum <usama.anjum@collabora.com>]

Mark the arguments which cannot be removed with __unused attribute.

Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
---
 tools/testing/selftests/mm/cow.c             | 20 ++++++-------
 tools/testing/selftests/mm/memfd_secret.c    |  4 +--
 tools/testing/selftests/mm/pfnmap.c          |  2 +-
 tools/testing/selftests/mm/uffd-common.c     | 11 +++----
 tools/testing/selftests/mm/uffd-unit-tests.c | 30 ++++++++++----------
 5 files changed, 34 insertions(+), 33 deletions(-)

diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c
index eb1ccf067b633..6f6c4e85240c7 100644
--- a/tools/testing/selftests/mm/cow.c
+++ b/tools/testing/selftests/mm/cow.c
@@ -253,12 +253,12 @@ static void do_test_cow_in_parent(char *mem, size_t size, bool do_mprotect,
 	close_comm_pipes(&comm_pipes);
 }
 
-static void test_cow_in_parent(char *mem, size_t size, bool is_hugetlb)
+static void test_cow_in_parent(char *mem, size_t size, bool __unused is_hugetlb)
 {
 	do_test_cow_in_parent(mem, size, false, child_memcmp_fn, false);
 }
 
-static void test_cow_in_parent_mprotect(char *mem, size_t size, bool is_hugetlb)
+static void test_cow_in_parent_mprotect(char *mem, size_t size, bool __unused is_hugetlb)
 {
 	do_test_cow_in_parent(mem, size, true, child_memcmp_fn, false);
 }
@@ -734,36 +734,36 @@ static void do_test_ro_pin(char *mem, size_t size, enum ro_pin_test test,
 	free(tmp);
 }
 
-static void test_ro_pin_on_shared(char *mem, size_t size, bool is_hugetlb)
+static void test_ro_pin_on_shared(char *mem, size_t size, bool __unused is_hugetlb)
 {
 	do_test_ro_pin(mem, size, RO_PIN_TEST_SHARED, false);
 }
 
-static void test_ro_fast_pin_on_shared(char *mem, size_t size, bool is_hugetlb)
+static void test_ro_fast_pin_on_shared(char *mem, size_t size, bool __unused is_hugetlb)
 {
 	do_test_ro_pin(mem, size, RO_PIN_TEST_SHARED, true);
 }
 
 static void test_ro_pin_on_ro_previously_shared(char *mem, size_t size,
-		bool is_hugetlb)
+		bool __unused is_hugetlb)
 {
 	do_test_ro_pin(mem, size, RO_PIN_TEST_PREVIOUSLY_SHARED, false);
 }
 
 static void test_ro_fast_pin_on_ro_previously_shared(char *mem, size_t size,
-		bool is_hugetlb)
+		bool __unused is_hugetlb)
 {
 	do_test_ro_pin(mem, size, RO_PIN_TEST_PREVIOUSLY_SHARED, true);
 }
 
 static void test_ro_pin_on_ro_exclusive(char *mem, size_t size,
-		bool is_hugetlb)
+		bool __unused is_hugetlb)
 {
 	do_test_ro_pin(mem, size, RO_PIN_TEST_RO_EXCLUSIVE, false);
 }
 
 static void test_ro_fast_pin_on_ro_exclusive(char *mem, size_t size,
-		bool is_hugetlb)
+		bool __unused is_hugetlb)
 {
 	do_test_ro_pin(mem, size, RO_PIN_TEST_RO_EXCLUSIVE, true);
 }
@@ -1522,12 +1522,12 @@ static void test_cow(char *mem, const char *smem, size_t size)
 	free(old);
 }
 
-static void test_ro_pin(char *mem, const char *smem, size_t size)
+static void test_ro_pin(char *mem, const char __unused *smem, size_t size)
 {
 	do_test_ro_pin(mem, size, RO_PIN_TEST, false);
 }
 
-static void test_ro_fast_pin(char *mem, const char *smem, size_t size)
+static void test_ro_fast_pin(char *mem, const char __unused *smem, size_t size)
 {
 	do_test_ro_pin(mem, size, RO_PIN_TEST, true);
 }
diff --git a/tools/testing/selftests/mm/memfd_secret.c b/tools/testing/selftests/mm/memfd_secret.c
index 836383f63b630..7117cc0f56dbb 100644
--- a/tools/testing/selftests/mm/memfd_secret.c
+++ b/tools/testing/selftests/mm/memfd_secret.c
@@ -123,7 +123,7 @@ static void test_vmsplice(int fd, const char *desc)
 	close(pipefd[1]);
 }
 
-static void try_process_vm_read(int fd, int pipefd[2])
+static void try_process_vm_read(int __unused fd, int pipefd[2])
 {
 	struct iovec liov, riov;
 	char buf[64];
@@ -147,7 +147,7 @@ static void try_process_vm_read(int fd, int pipefd[2])
 	exit(KSFT_FAIL);
 }
 
-static void try_ptrace(int fd, int pipefd[2])
+static void try_ptrace(int __unused fd, int pipefd[2])
 {
 	pid_t ppid = getppid();
 	int status;
diff --git a/tools/testing/selftests/mm/pfnmap.c b/tools/testing/selftests/mm/pfnmap.c
index 866ac023baf5c..54c9af20d312e 100644
--- a/tools/testing/selftests/mm/pfnmap.c
+++ b/tools/testing/selftests/mm/pfnmap.c
@@ -26,7 +26,7 @@
 
 static sigjmp_buf sigjmp_buf_env;
 
-static void signal_handler(int sig)
+static void signal_handler(int __unused sig)
 {
 	siglongjmp(sigjmp_buf_env, -EFAULT);
 }
diff --git a/tools/testing/selftests/mm/uffd-common.c b/tools/testing/selftests/mm/uffd-common.c
index 815c22114b57e..e309ec886fa72 100644
--- a/tools/testing/selftests/mm/uffd-common.c
+++ b/tools/testing/selftests/mm/uffd-common.c
@@ -46,7 +46,7 @@ static void anon_release_pages(char *rel_area)
 		err("madvise(MADV_DONTNEED) failed");
 }
 
-static int anon_allocate_area(void **alloc_area, bool is_src)
+static int anon_allocate_area(void **alloc_area, bool __unused is_src)
 {
 	*alloc_area = mmap(NULL, nr_pages * page_size, PROT_READ | PROT_WRITE,
 			   MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
@@ -57,7 +57,8 @@ static int anon_allocate_area(void **alloc_area, bool is_src)
 	return 0;
 }
 
-static void noop_alias_mapping(__u64 *start, size_t len, unsigned long offset)
+static void noop_alias_mapping(__u64 __unused *start, size_t __unused len,
+			       unsigned long __unused offset)
 {
 }
 
@@ -108,7 +109,7 @@ static int hugetlb_allocate_area(void **alloc_area, bool is_src)
 	return 0;
 }
 
-static void hugetlb_alias_mapping(__u64 *start, size_t len, unsigned long offset)
+static void hugetlb_alias_mapping(__u64 *start, size_t __unused len, unsigned long offset)
 {
 	if (!map_shared)
 		return;
@@ -167,12 +168,12 @@ static int shmem_allocate_area(void **alloc_area, bool is_src)
 	return 0;
 }
 
-static void shmem_alias_mapping(__u64 *start, size_t len, unsigned long offset)
+static void shmem_alias_mapping(__u64 *start, size_t __unused len, unsigned long offset)
 {
 	*start = (unsigned long)area_dst_alias + offset;
 }
 
-static void shmem_check_pmd_mapping(void *p, int expect_nr_hpages)
+static void shmem_check_pmd_mapping(void __unused *p, int expect_nr_hpages)
 {
 	if (!check_huge_shmem(area_dst_alias, expect_nr_hpages,
 			      read_pmd_pagesize()))
diff --git a/tools/testing/selftests/mm/uffd-unit-tests.c b/tools/testing/selftests/mm/uffd-unit-tests.c
index df7b82bbebaad..ee9b407e893e1 100644
--- a/tools/testing/selftests/mm/uffd-unit-tests.c
+++ b/tools/testing/selftests/mm/uffd-unit-tests.c
@@ -361,7 +361,7 @@ static int pagemap_test_fork(int uffd, bool with_event, bool test_pin)
 	return result;
 }
 
-static void uffd_wp_unpopulated_test(uffd_test_args_t *args)
+static void uffd_wp_unpopulated_test(uffd_test_args_t __unused *args)
 {
 	uint64_t value;
 	int pagemap_fd;
@@ -487,7 +487,7 @@ static void uffd_wp_fork_with_event_test(uffd_test_args_t *args)
 	uffd_wp_fork_test_common(args, true);
 }
 
-static void uffd_wp_fork_pin_test_common(uffd_test_args_t *args,
+static void uffd_wp_fork_pin_test_common(uffd_test_args_t __unused *args,
 					 bool with_event)
 {
 	int pagemap_fd;
@@ -631,24 +631,24 @@ static void uffd_minor_test_common(bool test_collapse, bool test_wp)
 		uffd_test_pass();
 }
 
-void uffd_minor_test(uffd_test_args_t *args)
+void uffd_minor_test(uffd_test_args_t __unused *args)
 {
 	uffd_minor_test_common(false, false);
 }
 
-void uffd_minor_wp_test(uffd_test_args_t *args)
+void uffd_minor_wp_test(uffd_test_args_t __unused *args)
 {
 	uffd_minor_test_common(false, true);
 }
 
-void uffd_minor_collapse_test(uffd_test_args_t *args)
+void uffd_minor_collapse_test(uffd_test_args_t __unused *args)
 {
 	uffd_minor_test_common(true, false);
 }
 
 static sigjmp_buf jbuf, *sigbuf;
 
-static void sighndl(int sig, siginfo_t *siginfo, void *ptr)
+static void sighndl(int sig, siginfo_t __unused *siginfo, void __unused *ptr)
 {
 	if (sig == SIGBUS) {
 		if (sigbuf)
@@ -824,12 +824,12 @@ static void uffd_sigbus_test_common(bool wp)
 		uffd_test_pass();
 }
 
-static void uffd_sigbus_test(uffd_test_args_t *args)
+static void uffd_sigbus_test(uffd_test_args_t __unused *args)
 {
 	uffd_sigbus_test_common(false);
 }
 
-static void uffd_sigbus_wp_test(uffd_test_args_t *args)
+static void uffd_sigbus_wp_test(uffd_test_args_t __unused *args)
 {
 	uffd_sigbus_test_common(true);
 }
@@ -877,12 +877,12 @@ static void uffd_events_test_common(bool wp)
 		uffd_test_pass();
 }
 
-static void uffd_events_test(uffd_test_args_t *args)
+static void uffd_events_test(uffd_test_args_t __unused *args)
 {
 	uffd_events_test_common(false);
 }
 
-static void uffd_events_wp_test(uffd_test_args_t *args)
+static void uffd_events_wp_test(uffd_test_args_t __unused *args)
 {
 	uffd_events_test_common(true);
 }
@@ -950,7 +950,7 @@ uffd_register_detect_zeropage(int uffd, void *addr, uint64_t len)
 }
 
 /* exercise UFFDIO_ZEROPAGE */
-static void uffd_zeropage_test(uffd_test_args_t *args)
+static void uffd_zeropage_test(uffd_test_args_t __unused *args)
 {
 	bool has_zeropage;
 	int i;
@@ -1006,7 +1006,7 @@ static void do_uffdio_poison(int uffd, unsigned long offset)
 }
 
 static void uffd_poison_handle_fault(
-	struct uffd_msg *msg, struct uffd_args *args)
+	struct uffd_msg *msg, struct uffd_args __unused *args)
 {
 	unsigned long offset;
 
@@ -1030,7 +1030,7 @@ static void uffd_poison_handle_fault(
 /* Make sure to cover odd/even, and minimum duplications */
 #define  UFFD_POISON_TEST_NPAGES  4
 
-static void uffd_poison_test(uffd_test_args_t *targs)
+static void uffd_poison_test(uffd_test_args_t __unused *targs)
 {
 	pthread_t uffd_mon;
 	char c;
@@ -1126,7 +1126,7 @@ static void uffd_move_pmd_handle_fault(struct uffd_msg *msg,
 }
 
 static void
-uffd_move_test_common(uffd_test_args_t *targs, unsigned long chunk_size,
+uffd_move_test_common(uffd_test_args_t __unused *targs, unsigned long chunk_size,
 		      void (*handle_fault)(struct uffd_msg *msg, struct uffd_args *args))
 {
 	unsigned long nr;
@@ -1359,7 +1359,7 @@ static void uffd_consume_message(void)
 	while (uffd_read_msg(&msg));
 }
 
-static void uffd_mmap_changing_test(uffd_test_args_t *targs)
+static void uffd_mmap_changing_test(uffd_test_args_t __unused *targs)
 {
 	/*
 	 * This stores the real PID (which can be different from how tid is
-- 
2.39.5