From d9ec8b9b2a3880a1a2b68e57a25833486c3b164d Mon Sep 17 00:00:00 2001
From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Fri, 15 Sep 2017 10:24:13 -0700
Subject: [PATCH] Add configure option to enable gcov analysis

* Add configure option to enable gcov analysis.
* Includes a few minor ctime fixes.
* Add codecov.yml configuration.

Reviewed-by: Prakash Surya <prakash.surya@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6642
---
 .github/codecov.yml                           |  9 ++++++
 .gitignore                                    |  2 ++
 Makefile.am                                   |  3 +-
 config/zfs-build.m4                           | 31 +++++++++++++++++++
 configure.ac                                  |  1 +
 .../tests/functional/ctime/.gitignore         |  2 +-
 .../tests/functional/ctime/ctime_001_pos.ksh  |  0
 7 files changed, 46 insertions(+), 2 deletions(-)
 create mode 100644 .github/codecov.yml
 mode change 100644 => 100755 tests/zfs-tests/tests/functional/ctime/ctime_001_pos.ksh

diff --git a/.github/codecov.yml b/.github/codecov.yml
new file mode 100644
index 0000000000..f36be39cb2
--- /dev/null
+++ b/.github/codecov.yml
@@ -0,0 +1,9 @@
+codecov:
+  strict_yaml_branch: master # only use the latest copy on master branch
+
+comment: off
+
+coverage:
+  status:
+    project: off
+    patch: off
diff --git a/.gitignore b/.gitignore
index 29437b58c8..bfce0902fe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,8 @@
 *.mod.c
 *~
 *.swp
+*.gcno
+*.gcda
 .deps
 .libs
 .dirstamp
diff --git a/Makefile.am b/Makefile.am
index e6e19d6a23..ed753c81a2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -31,7 +31,8 @@ distclean-local::
 		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
 		-o -name '.*.rej' -o -size 0 -o -name '*%' -o -name '.*.cmd' \
 		-o -name 'core' -o -name 'Makefile' -o -name 'Module.symvers' \
-		-o -name '*.order' -o -name '*.markers' \) \
+		-o -name '*.order' -o -name '*.markers' -o -name '*.gcda' \
+		-o -name '*.gcno' \) \
 		-type f -print | xargs $(RM)
 
 dist-hook:
diff --git a/config/zfs-build.m4 b/config/zfs-build.m4
index a8609b8299..b84658a648 100644
--- a/config/zfs-build.m4
+++ b/config/zfs-build.m4
@@ -75,6 +75,37 @@ AC_DEFUN([ZFS_AC_DEBUGINFO], [
 	AC_MSG_RESULT([$enable_debuginfo])
 ])
 
+AC_DEFUN([ZFS_AC_GCOV_KERNEL], [
+])
+
+AC_DEFUN([ZFS_AC_GCOV_USER], [
+	DEBUG_CFLAGS="$DEBUG_CFLAGS -fprofile-arcs -ftest-coverage"
+])
+
+AC_DEFUN([ZFS_AC_GCOV], [
+	AC_MSG_CHECKING([whether gcov profiling will be enabled])
+	AC_ARG_ENABLE([gcov],
+		[AS_HELP_STRING([--enable-gcov],
+		[Enable gcov profiling @<:@default=no@:>@])],
+		[],
+		[enable_gcov=no])
+
+	AS_CASE(["x$enable_gcov"],
+		["xyes"],
+		[ZFS_AC_GCOV_KERNEL
+		ZFS_AC_GCOV_USER],
+		["xkernel"],
+		[ZFS_AC_GCOV_KERNEL],
+		["xuser"],
+		[ZFS_AC_GCOV_USER],
+		["xno"],
+		[],
+		[AC_MSG_ERROR([Unknown option $enable_gcov])])
+
+	AC_SUBST(DEBUG_CFLAGS)
+	AC_MSG_RESULT([$enable_gcov])
+])
+
 AC_DEFUN([ZFS_AC_CONFIG_ALWAYS], [
 	ZFS_AC_CONFIG_ALWAYS_NO_UNUSED_BUT_SET_VARIABLE
 	ZFS_AC_CONFIG_ALWAYS_NO_BOOL_COMPARE
diff --git a/configure.ac b/configure.ac
index 0e7686fab4..ae03d1bf7f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,7 @@ ZFS_AC_PACKAGE
 ZFS_AC_CONFIG
 ZFS_AC_DEBUG
 ZFS_AC_DEBUGINFO
+ZFS_AC_GCOV
 
 AC_CONFIG_FILES([
 	Makefile
diff --git a/tests/zfs-tests/tests/functional/ctime/.gitignore b/tests/zfs-tests/tests/functional/ctime/.gitignore
index ead826c04b..9e4539d5fe 100644
--- a/tests/zfs-tests/tests/functional/ctime/.gitignore
+++ b/tests/zfs-tests/tests/functional/ctime/.gitignore
@@ -1 +1 @@
-/ctime_001_pos
+/ctime
diff --git a/tests/zfs-tests/tests/functional/ctime/ctime_001_pos.ksh b/tests/zfs-tests/tests/functional/ctime/ctime_001_pos.ksh
old mode 100644
new mode 100755