[PATCH 6.1.y 0/2] Backport dependency commits for 616b14b47a86 ("perf build: Conditionally define NDEBUG")

[Simon Liebold]

Hi, please backport the following two patches to 6.1.y:

- d1babea9c382 ("perf bench: Avoid NDEBUG warning")
- 984a785f25e5 ("perf block-range: Move debug code behind ifndef NDEBUG")

They are stable dependencies for commit 616b14b47a86 ("perf build: Conditionally
define NDEBUG") which was backported to v6.1.176 as 7bf35a0237d04.

That commit adds -DNDEBUG=1 to perf CFLAGS, which compiles out assert() calls,
leaving variables consumed only by asserts as unused-but-set. Combined with
-Werror this breaks the build:

    bench/find-bit-bench.c:64:22: error: variable 'old' set but not used
    util/block-range.c:20:13: error: variable 'old' set but not used

We need these two dependency patches, because both guard assert-only variables
with #ifndef NDEBUG so they are compiled out alongside the asserts they
validate.

Tested using our regression test suite including kselftest and LTP on various
EC2 instances.

Thanks.

- Simon

Ian Rogers (2):
  perf bench: Avoid NDEBUG warning
  perf block-range: Move debug code behind ifndef NDEBUG

 tools/perf/bench/find-bit-bench.c | 8 ++++++--
 tools/perf/util/block-range.c     | 6 +-----
 2 files changed, 7 insertions(+), 7 deletions(-)


base-commit: fdb6fcb41cc741ad5eaa7995f278dfcb94fdf795
-- 
2.50.1




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