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Date: Thu, 3 Sep 2009 21:25:51 -0400
From: Amerigo Wang <amwang@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Amerigo Wang <amwang@...hat.com>,
Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>,
akpm@...ux-foundation.org, Sam Ravnborg <sam@...nborg.org>,
linux-kbuild@...r.kernel.org
Subject: [Patch 3/5] doc: move the scripts in gcov.txt to tools/gcov/
Move the two bash scripts in gcov.txt into tools/gcov/,
so that we can use them directly.
Signed-off-by: WANG Cong <amwang@...hat.com>
---
Index: linux-2.6/Documentation/gcov.txt
===================================================================
--- linux-2.6.orig/Documentation/gcov.txt
+++ linux-2.6/Documentation/gcov.txt
@@ -8,8 +8,6 @@ Using gcov with the Linux kernel
5. Modules
6. Separated build and test machines
7. Troubleshooting
-Appendix A: sample script: gather_on_build.sh
-Appendix B: sample script: gather_on_test.sh
1. Introduction
@@ -155,6 +153,8 @@ exact same file system location on the t
machine. If any of the path components is symbolic link, the actual
directory needs to be used instead (due to make's CURDIR handling).
+Try tools/gcov/gather_on_build.sh.
+
b) gcov is run on the BUILD machine
The following files need to be copied after each test case from test
@@ -167,6 +167,8 @@ from the gcov directory in sysfs:
These files can be copied to any location on the build machine. gcov
must then be called with the -o option pointing to that directory.
+Try tools/gcov/gather_on_test.sh.
+
Example directory setup on the build machine:
/tmp/linux: kernel source tree
@@ -192,62 +194,6 @@ Problem: Files copied from sysfs appear
Cause: Due to the way seq_file works, some tools such as cp or tar
may not correctly copy files from sysfs.
Solution: Use 'cat' to read .gcda files and 'cp -d' to copy links.
- Alternatively use the mechanism shown in Appendix B.
-
-
-Appendix A: gather_on_build.sh
-==============================
-
-Sample script to gather coverage meta files on the build machine
-(see 6a):
-#!/bin/bash
-
-KSRC=$1
-KOBJ=$2
-DEST=$3
-
-if [ -z "$KSRC" ] || [ -z "$KOBJ" ] || [ -z "$DEST" ]; then
- echo "Usage: $0 <ksrc directory> <kobj directory> <output.tar.gz>" >&2
- exit 1
-fi
-
-KSRC=$(cd $KSRC; printf "all:\n\t@...o \${CURDIR}\n" | make -f -)
-KOBJ=$(cd $KOBJ; printf "all:\n\t@...o \${CURDIR}\n" | make -f -)
-
-find $KSRC $KOBJ \( -name '*.gcno' -o -name '*.[ch]' -o -type l \) -a \
- -perm /u+r,g+r | tar cfz $DEST -P -T -
-
-if [ $? -eq 0 ] ; then
- echo "$DEST successfully created, copy to test system and unpack with:"
- echo " tar xfz $DEST -P"
-else
- echo "Could not create file $DEST"
-fi
-
-
-Appendix B: gather_on_test.sh
-=============================
-
-Sample script to gather coverage data files on the test machine
-(see 6b):
-
-#!/bin/bash -e
-
-DEST=$1
-GCDA=/sys/kernel/debug/gcov
-
-if [ -z "$DEST" ] ; then
- echo "Usage: $0 <output.tar.gz>" >&2
- exit 1
-fi
-
-TEMPDIR=$(mktemp -d)
-echo Collecting data..
-find $GCDA -type d -exec mkdir -p $TEMPDIR/\{\} \;
-find $GCDA -name '*.gcda' -exec sh -c 'cat < $0 > '$TEMPDIR'/$0' {} \;
-find $GCDA -name '*.gcno' -exec sh -c 'cp -d $0 '$TEMPDIR'/$0' {} \;
-tar czf $DEST -C $TEMPDIR sys
-rm -rf $TEMPDIR
+ Alternatively use the mechanism shown in
+ tools/gcov/gather_on_test.sh.
-echo "$DEST successfully created, copy to build system and unpack with:"
-echo " tar xfz $DEST"
Index: linux-2.6/tools/gcov/gather_on_build.sh
===================================================================
--- /dev/null
+++ linux-2.6/tools/gcov/gather_on_build.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+KSRC=$1
+KOBJ=$2
+DEST=$3
+
+if [ -z "$KSRC" ] || [ -z "$KOBJ" ] || [ -z "$DEST" ]; then
+ echo "Usage: $0 <ksrc directory> <kobj directory> <output.tar.gz>" >&2
+ exit 1
+fi
+
+KSRC=$(cd $KSRC; printf "all:\n\t@...o \${CURDIR}\n" | make -f -)
+KOBJ=$(cd $KOBJ; printf "all:\n\t@...o \${CURDIR}\n" | make -f -)
+
+find $KSRC $KOBJ \( -name '*.gcno' -o -name '*.[ch]' -o -type l \) -a \
+ -perm /u+r,g+r | tar cfz $DEST -P -T -
+
+if [ $? -eq 0 ] ; then
+ echo "$DEST successfully created, copy to test system and unpack with:"
+ echo " tar xfz $DEST -P"
+else
+ echo "Could not create file $DEST"
+fi
+
Index: linux-2.6/tools/gcov/gather_on_test.sh
===================================================================
--- /dev/null
+++ linux-2.6/tools/gcov/gather_on_test.sh
@@ -0,0 +1,20 @@
+#!/bin/bash -e
+
+DEST=$1
+GCDA=/sys/kernel/debug/gcov
+
+if [ -z "$DEST" ] ; then
+ echo "Usage: $0 <output.tar.gz>" >&2
+ exit 1
+fi
+
+TEMPDIR=$(mktemp -d)
+echo Collecting data..
+find $GCDA -type d -exec mkdir -p $TEMPDIR/\{\} \;
+find $GCDA -name '*.gcda' -exec sh -c 'cat < $0 > '$TEMPDIR'/$0' {} \;
+find $GCDA -name '*.gcno' -exec sh -c 'cp -d $0 '$TEMPDIR'/$0' {} \;
+tar czf $DEST -C $TEMPDIR sys
+rm -rf $TEMPDIR
+
+echo "$DEST successfully created, copy to build system and unpack with:"
+echo " tar xfz $DEST"
--
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