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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: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Muhammad Usama Anjum 2024-02-02 16:31:14 +05:00 committed by Andrew Morton
parent 746f356f11
commit a0d4705785
1 changed files with 20 additions and 12 deletions
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32
tools/testing/selftests/mm/mremap_dontunmap.c
View File

@ -27,14 +27,14 @@ static void dump_maps(void)
system(cmd);
}
#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); \
} \
#define BUG_ON(condition, description) \
do { \
if (condition) { \
dump_maps(); \
ksft_exit_fail_msg("[FAIL]\t%s:%d\t%s:%s\n", \
__func__, __LINE__, (description), \
strerror(errno)); \
} \
} while (0)
// Try a simple operation for to "test" for kernel support this prevents
@ -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();
}