diff options
| author | Vincent Donnefort <vdonnefort@google.com> | 2024-09-10 17:23:34 +0100 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2024-09-11 12:25:02 -0400 |
| commit | 21ff365b5c88c0bf8447989aadb5d8fe401c9cfc (patch) | |
| tree | 334c622efcbd1b842bebab5ca7281eeff191e00e /tools/testing | |
| parent | 2fcd5aff92aab479a9a89cfce2dbc9c6a9455b4f (diff) | |
| download | linux-stable-21ff365b5c88c0bf8447989aadb5d8fe401c9cfc.tar.gz linux-stable-21ff365b5c88c0bf8447989aadb5d8fe401c9cfc.tar.bz2 linux-stable-21ff365b5c88c0bf8447989aadb5d8fe401c9cfc.zip | |
selftests/ring-buffer: Verify the entire meta-page padding
Improve the ring-buffer meta-page test coverage by checking for the
entire padding region to be 0 instead of just looking at the first 4
bytes.
Cc: linux-kselftest@vger.kernel.org
Link: https://lore.kernel.org/20240910162335.2993310-2-vdonnefort@google.com
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/ring-buffer/map_test.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/tools/testing/selftests/ring-buffer/map_test.c b/tools/testing/selftests/ring-buffer/map_test.c index 4bb0192e43f3..ba12fd31de87 100644 --- a/tools/testing/selftests/ring-buffer/map_test.c +++ b/tools/testing/selftests/ring-buffer/map_test.c @@ -231,15 +231,15 @@ TEST_F(map, data_mmap) /* Verify meta-page padding */ if (desc->meta->meta_page_size > getpagesize()) { - void *addr; - data_len = desc->meta->meta_page_size; data = mmap(NULL, data_len, PROT_READ, MAP_SHARED, desc->cpu_fd, 0); ASSERT_NE(data, MAP_FAILED); - addr = (void *)((unsigned long)data + getpagesize()); - ASSERT_EQ(*((int *)addr), 0); + for (int i = desc->meta->meta_struct_len; + i < desc->meta->meta_page_size; i += sizeof(int)) + ASSERT_EQ(*(int *)(data + i), 0); + munmap(data, data_len); } } |