linux-dev/tools/testing/selftests/vm/util.h, branch linus/masterLinux kernel development work - see feature brancheshttps://git.zx2c4.com/linux-dev/atom/tools/testing/selftests/vm/util.h?h=linus%2Fmaster2022-03-25T02:06:45Zselftest/vm: add helpers to detect PAGE_SIZE and PAGE_SHIFT2022-03-25T02:06:45ZMike Rapoportrppt@kernel.org2022-03-25T01:09:46Zurn:sha1:6f6a841fb77df0bc6383133b22feb9b015380a55
PAGE_SIZE is not 4096 in many configurations, particularly ppc64 uses 64K
pages in majority of cases.
Add helpers to detect PAGE_SIZE and PAGE_SHIFT dynamically.
Without this tests are broken w.r.t reading /proc/self/pagemap
if (pread(pagemap_fd, ent, sizeof(ent),
(uintptr_t)ptr >> (PAGE_SHIFT - 3)) != sizeof(ent))
err(2, "read pagemap");
Link: https://lkml.kernel.org/r/20220307054355.149820-2-aneesh.kumar@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
selftest/vm: add util.h and and move helper functions there2022-03-25T02:06:45ZAneesh Kumar K.Vaneesh.kumar@linux.ibm.com2022-03-25T01:09:43Zurn:sha1:90647d9d725068ad27d39f80d2b4a5150d041038
Avoid code duplication by adding util.h. No functional change in this
patch.
Link: https://lkml.kernel.org/r/20220307054355.149820-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>