The patch titled
Subject: kcov: do not instrument lib/stackdepot.c
has been added to the -mm tree. Its filename is
kcov-do-not-instrument-lib-stackdepotc.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kcov-do-not-instrument-lib-stackdepotc.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kcov-do-not-instrument-lib-stackdepotc.patch
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------------------------------------------------------
From: Alexander Potapenko <glider@xxxxxxxxxx>
Subject: kcov: do not instrument lib/stackdepot.c
There's no point in collecting coverage from lib/stackdepot.c, as it is
not a function of syscall inputs. Disabling kcov instrumentation for that
file will reduce the coverage noise level.
Link: http://lkml.kernel.org/r/1474640972-104131-1-git-send-email-glider@xxxxxxxxxx
Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Acked-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Kostya Serebryany <kcc@xxxxxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Cc: syzkaller <syzkaller@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/Makefile | 1 +
1 file changed, 1 insertion(+)
diff -puN lib/Makefile~kcov-do-not-instrument-lib-stackdepotc lib/Makefile
--- a/lib/Makefile~kcov-do-not-instrument-lib-stackdepotc
+++ a/lib/Makefile
@@ -181,6 +181,7 @@ obj-$(CONFIG_IRQ_POLL) += irq_poll.o
obj-$(CONFIG_STACKDEPOT) += stackdepot.o
KASAN_SANITIZE_stackdepot.o := n
+KCOV_INSTRUMENT_stackdepot.o := n
libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \
fdt_empty_tree.o
_
Patches currently in -mm which might be from glider@xxxxxxxxxx are
kcov-do-not-instrument-lib-stackdepotc.patch
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