Commit a0d47057 authored by Muhammad Usama Anjum's avatar Muhammad Usama Anjum Committed by Andrew Morton
Browse files

selftests/mm: mremap_dontunmap: conform test to TAP format output 

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/20240202113119.2047740-8-usama.anjum@collabora.com


Signed-off-by: default avatarMuhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 746f356f

tools/testing/selftests/mm/mremap_dontunmap.c

+20 −12
Original line number Diff line number Diff line
@@ -30,10 +30,10 @@ static void dump_maps(void) 
#define BUG_ON(condition, description)						\

	do {									\

		if (condition) {						\

			fprintf(stderr, "[FAIL]\t%s():%d\t%s:%s\n", __func__, \

				__LINE__, (description), strerror(errno));    \

			dump_maps();						\

			exit(1);					      \

			ksft_exit_fail_msg("[FAIL]\t%s:%d\t%s:%s\n",		\

					   __func__, __LINE__, (description),	\

					   strerror(errno));			\

		}								\

	} while (0)
@@ -122,6 +122,7 @@ static void mremap_dontunmap_simple() 
	       "unable to unmap destination mapping");

	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,

	       "unable to unmap source mapping");

	ksft_test_result_pass("%s\n", __func__);

}



// This test validates that MREMAP_DONTUNMAP on a shared mapping works as expected.
@@ -173,6 +174,7 @@ static void mremap_dontunmap_simple_shmem() 
	       "unable to unmap destination mapping");

	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,

	       "unable to unmap source mapping");

	ksft_test_result_pass("%s\n", __func__);

}



// This test validates MREMAP_DONTUNMAP will move page tables to a specific
@@ -219,6 +221,7 @@ static void mremap_dontunmap_simple_fixed() 
	       "unable to unmap destination mapping");

	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,

	       "unable to unmap source mapping");

	ksft_test_result_pass("%s\n", __func__);

}



// This test validates that we can MREMAP_DONTUNMAP for a portion of an
@@ -269,6 +272,7 @@ static void mremap_dontunmap_partial_mapping() 
	       "unable to unmap destination mapping");

	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,

	       "unable to unmap source mapping");

	ksft_test_result_pass("%s\n", __func__);

}



// This test validates that we can remap over only a portion of a mapping.
@@ -328,19 +332,24 @@ static void mremap_dontunmap_partial_mapping_overwrite(void) 
	       "unable to unmap destination mapping");

	BUG_ON(munmap(source_mapping, 5 * page_size) == -1,

	       "unable to unmap source mapping");

	ksft_test_result_pass("%s\n", __func__);

}



int main(void)

{

	ksft_print_header();



	page_size = sysconf(_SC_PAGE_SIZE);



	// test for kernel support for MREMAP_DONTUNMAP skipping the test if

	// not.

	if (kernel_support_for_mremap_dontunmap() != 0) {

		printf("No kernel support for MREMAP_DONTUNMAP\n");

		return KSFT_SKIP;

		ksft_print_msg("No kernel support for MREMAP_DONTUNMAP\n");

		ksft_finished();

	}



	ksft_set_plan(5);



	// Keep a page sized buffer around for when we need it.

	page_buffer =

	    mmap(NULL, page_size, PROT_READ | PROT_WRITE,
@@ -356,6 +365,5 @@ int main(void) 
	BUG_ON(munmap(page_buffer, page_size) == -1,

	       "unable to unmap page buffer");



	printf("OK\n");

	return 0;

	ksft_finished();

}