[tip/core/rcu,04/30] rcu: Provide debug symbols and line numbers in KCSAN runs
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Message ID 20200214235607.13749-4-paulmck@kernel.org
State In Next
Commit adb9d3f741e8b398002cf2b912355c1fea2d81a5
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Series
  • Miscellaneous fixes for v5.7
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Commit Message

Paul E. McKenney Feb. 14, 2020, 11:55 p.m. UTC 
From: "Paul E. McKenney" <paulmck@kernel.org>

This commit adds "-g -fno-omit-frame-pointer" to ease interpretation
of KCSAN output, but only for CONFIG_KCSAN=y kerrnels.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 kernel/rcu/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

Patch
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diff --git a/kernel/rcu/Makefile b/kernel/rcu/Makefile
index 82d5fba..f91f2c2 100644
--- a/kernel/rcu/Makefile
+++ b/kernel/rcu/Makefile
@@ -3,6 +3,10 @@ 
 # and is generally not a function of system call inputs.
 KCOV_INSTRUMENT := n
 
+ifeq ($(CONFIG_KCSAN),y)
+KBUILD_CFLAGS += -g -fno-omit-frame-pointer
+endif
+
 obj-y += update.o sync.o
 obj-$(CONFIG_TREE_SRCU) += srcutree.o
 obj-$(CONFIG_TINY_SRCU) += srcutiny.o