On 9/14/26 09:30, Yeoreum Yun wrote: > Introduce size_to_shift() for future users that need to > obtain shift of a huge-page which is other than pmd_psize(). > > Suggested-by: David Hildenbrand (Arm) <[email protected]> > Signed-off-by: Yeoreum Yun <[email protected]> > --- > tools/testing/selftests/mm/vm_util.c | 10 +++++++++- > tools/testing/selftests/mm/vm_util.h | 1 + > 2 files changed, 10 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/mm/vm_util.c > b/tools/testing/selftests/mm/vm_util.c > index fd1432dc6152..1fef1266429f 100644 > --- a/tools/testing/selftests/mm/vm_util.c > +++ b/tools/testing/selftests/mm/vm_util.c > @@ -157,6 +157,14 @@ bool check_for_pattern(FILE *fp, const char *pattern, > char *buf, size_t len) > return false; > } > > +uint64_t size_to_shift(uint64_t size) > +{ > + if (__builtin_popcountll(size) != 1) > + return 0; > + > + return ffsl(size) - 1; > +}
Could likely just be an inline helper? -- Cheers, David
