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From: Alexander Potapenko <glider@google.com>
To: dvyukov@google.com, kcc@google.com, akpm@linux-foundation.org,
	andreyknvl@google.com
Cc: linux-kernel@vger.kernel.org, syzkaller@googlegroups.com
Subject: [PATCH] kcov: do not instrument lib/stackdepot.c
Date: Fri, 23 Sep 2016 16:29:32 +0200	[thread overview]
Message-ID: <1474640972-104131-1-git-send-email-glider@google.com> (raw)

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.

Signed-off-by: Alexander Potapenko <glider@google.com>
---
 lib/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Makefile b/lib/Makefile
index 5dc77a8..cbac596 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -180,6 +180,7 @@ 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
-- 
2.8.0.rc3.226.g39d4020

             reply	other threads:[~2016-09-23 14:29 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-23 14:29 Alexander Potapenko [this message]
2016-09-23 14:38 ` [PATCH] kcov: do not instrument lib/stackdepot.c Dmitry Vyukov

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