tools headers: Synchronize uapi/linux/bits.h with the kernel sources

To pick up the changes in this cset:

  1e7933a575ed8af4 ("uapi: Revert "bitops: avoid integer overflow in GENMASK(_ULL)"")

This addresses this perf build warning:

  Warning: Kernel ABI header differences:
    diff -u tools/include/uapi/linux/bits.h include/uapi/linux/bits.h

Please see tools/include/uapi/README for further details.

Acked-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Acked-by: Yury Norov [NVIDIA] <yury.norov@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: I Hsin Cheng <richard120310@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20250519214126.1652491-6-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/include/uapi/linux/bits.h b/tools/include/uapi/linux/bits.h
index 5ee30f882736cbd1bc7b3c1e5236858db44015d7..682b406e10679dc8baa188830ab0811e7e3e13e3 100644 (file)
--- a/tools/include/uapi/linux/bits.h
+++ b/tools/include/uapi/linux/bits.h
@@ -4,13 +4,9 @@
 #ifndef _UAPI_LINUX_BITS_H
 #define _UAPI_LINUX_BITS_H
 
-#define __GENMASK(h, l) \
-        (((~_UL(0)) - (_UL(1) << (l)) + 1) & \
-         (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
+#define __GENMASK(h, l) (((~_UL(0)) << (l)) & (~_UL(0) >> (BITS_PER_LONG - 1 - (h))))
 
-#define __GENMASK_ULL(h, l) \
-        (((~_ULL(0)) - (_ULL(1) << (l)) + 1) & \
-         (~_ULL(0) >> (__BITS_PER_LONG_LONG - 1 - (h))))
+#define __GENMASK_ULL(h, l) (((~_ULL(0)) << (l)) & (~_ULL(0) >> (BITS_PER_LONG_LONG - 1 - (h))))
 
 #define __GENMASK_U128(h, l) \
        ((_BIT128((h)) << 1) - (_BIT128(l)))