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From: paulmck@kernel.org
To: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
	kernel-team@fb.com, mingo@kernel.org
Cc: elver@google.com, andreyknvl@google.com, glider@google.com,
	dvyukov@google.com, cai@lca.pw, boqun.feng@gmail.com,
	"Paul E . McKenney" <paulmck@kernel.org>
Subject: [PATCH kcsan 2/3] kcsan: Simplify compiler flags
Date: Wed, 24 Jun 2020 12:03:06 -0700	[thread overview]
Message-ID: <20200624190307.15191-2-paulmck@kernel.org> (raw)
In-Reply-To: <20200624190236.GA6603@paulmck-ThinkPad-P72>

From: Marco Elver <elver@google.com>

Simplify the set of compiler flags for the runtime by removing cc-option
from -fno-stack-protector, because all supported compilers support it.
This saves us one compiler invocation during build.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 kernel/kcsan/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/kcsan/Makefile b/kernel/kcsan/Makefile
index 092ce58..fea064a 100644
--- a/kernel/kcsan/Makefile
+++ b/kernel/kcsan/Makefile
@@ -7,8 +7,8 @@ CFLAGS_REMOVE_core.o = $(CC_FLAGS_FTRACE)
 CFLAGS_REMOVE_debugfs.o = $(CC_FLAGS_FTRACE)
 CFLAGS_REMOVE_report.o = $(CC_FLAGS_FTRACE)
 
-CFLAGS_core.o := $(call cc-option,-fno-conserve-stack,) \
-	$(call cc-option,-fno-stack-protector,)
+CFLAGS_core.o := $(call cc-option,-fno-conserve-stack) \
+	-fno-stack-protector
 
 obj-y := core.o debugfs.o report.o
 obj-$(CONFIG_KCSAN_SELFTEST) += selftest.o
-- 
2.9.5


  parent reply	other threads:[~2020-06-24 19:03 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-23  0:43 [PATCH kcsan 0/10] KCSAN updates for v5.9 Paul E. McKenney
2020-06-23  6:31 ` Marco Elver
2020-06-23 13:43   ` Paul E. McKenney
2020-06-23 15:06     ` Marco Elver
2020-06-23 16:31       ` Paul E. McKenney
2020-06-24 19:02 ` Paul E. McKenney
2020-06-24 19:03   ` [PATCH kcsan 1/3] kcsan: Re-add GCC as a supported compiler paulmck
2020-06-24 19:03   ` paulmck [this message]
2020-06-24 19:03   ` [PATCH kcsan 3/3] kcsan: Disable branch tracing in core runtime paulmck
2020-06-24 20:08   ` [PATCH kcsan 0/10] KCSAN updates for v5.9 Paul E. McKenney

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