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Message-Id: <20240607003631.32484-3-allison.henderson@oracle.com>
Date: Thu, 6 Jun 2024 17:36:30 -0700
From: allison.henderson@...cle.com
To: netdev@...r.kernel.org
Subject: [RFC net-next 2/3] net: rds: add option for GCOV profiling
From: Vegard Nossum <vegard.nossum@...cle.com>
This commit basically implements what ftrace does with
CONFIG_GCOV_PROFILE_FTRACE for RDS.
We need this in order to better be able to understand what code paths
our unit tests are hitting (or not hitting).
Signed-off-by: Vegard Nossum <vegard.nossum@...cle.com>
Reviewed-by: Allison Henderson <allison.henderson@...cle.com>
Reviewed-by: Chuck Lever <chuck.lever@...cle.com>
Signed-off-by: Allison Henderson <allison.henderson@...cle.com>
---
net/rds/Kconfig | 9 +++++++++
net/rds/Makefile | 5 +++++
2 files changed, 14 insertions(+)
diff --git a/net/rds/Kconfig b/net/rds/Kconfig
index 75cd696963b2..f007730aa2bb 100644
--- a/net/rds/Kconfig
+++ b/net/rds/Kconfig
@@ -26,3 +26,12 @@ config RDS_DEBUG
bool "RDS debugging messages"
depends on RDS
default n
+
+config GCOV_PROFILE_RDS
+ bool "Enable GCOV profiling on RDS"
+ depends on GCOV_KERNEL
+ help
+ Enable GCOV profiling on RDS for checking which functions/lines
+ are executed.
+
+ If unsure, say N.
diff --git a/net/rds/Makefile b/net/rds/Makefile
index 8fdc118e2927..3af1ca1d965c 100644
--- a/net/rds/Makefile
+++ b/net/rds/Makefile
@@ -15,3 +15,8 @@ rds_tcp-y := tcp.o tcp_connect.o tcp_listen.o tcp_recv.o \
tcp_send.o tcp_stats.o
ccflags-$(CONFIG_RDS_DEBUG) := -DRDS_DEBUG
+
+# for GCOV coverage profiling
+ifdef CONFIG_GCOV_PROFILE_RDS
+GCOV_PROFILE := y
+endif
--
2.25.1
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