From 10440bf0b5247e17cfcf862a9b2d8bc5dd1dd46e Mon Sep 17 00:00:00 2001
From: "Luis R. Rodriguez" <mcgrof@frijolero.org>
Date: Mon, 30 Apr 2012 13:38:34 -0700
Subject: [PATCH] compat-wireless: add -t argument for time statistics

Using -t is the equilavent of doing:

time ckmake; time ckmake | egrep "real|user|sys"

This is useful to test compiling accross kernel twice,
once under the assumption that ccache may likely be cleared,
the other with ccache fresh.

This will yield this output:

mcgrof@tux ~/compat (git::master)$ ckmake -t
Trying kernel                  3.4.0-030400rc1-generic	[OK]
Trying kernel                  3.3.0-030300rc2-generic	[OK]
Trying kernel                     3.2.2-030202-generic	[OK]
Trying kernel                    3.1.10-030110-generic	[OK]
Trying kernel                    3.0.18-030018-generic	[OK]
Trying kernel                  2.6.39-02063904-generic	[OK]
Trying kernel                  2.6.38-02063808-generic	[OK]
Trying kernel                  2.6.37-02063706-generic	[OK]
Trying kernel                  2.6.36-02063604-generic	[OK]
Trying kernel                  2.6.35-02063512-generic	[OK]
Trying kernel                  2.6.34-02063410-generic	[OK]
Trying kernel                  2.6.33-02063305-generic	[OK]
Trying kernel                  2.6.32-02063255-generic	[OK]
Trying kernel                  2.6.31-02063113-generic	[OK]
Trying kernel                  2.6.30-02063010-generic	[OK]
Trying kernel                  2.6.29-02062906-generic	[OK]
Trying kernel                  2.6.28-02062810-generic	[OK]
Trying kernel                    2.6.27-020627-generic	[OK]
Trying kernel                    2.6.26-020626-generic	[OK]
Trying kernel                    2.6.25-020625-generic	[OK]
Trying kernel                    2.6.24-020624-generic	[OK]

real	1m19.326s
user	1m18.740s
sys	0m22.360s

real	1m18.411s
user	1m15.330s
sys	0m21.960s

Signed-off-by: Luis R. Rodriguez <mcgrof@frijolero.org>
---
 bin/ckmake | 77 ++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 55 insertions(+), 22 deletions(-)

diff --git a/bin/ckmake b/bin/ckmake
index 56e1ec1..d89d067 100755
--- a/bin/ckmake
+++ b/bin/ckmake
@@ -25,6 +25,7 @@ UNDERLINE="\033[02m"
 KERNEL_DIR="/lib/modules"
 KLIBS=""
 LOG="ckmake.log"
+TIME="0"
 
 LSB_RED_ID=$(/usr/bin/lsb_release -i -s)
 case $LSB_RED_ID in
@@ -39,8 +40,6 @@ case $LSB_RED_ID in
 	;;
 esac
 
-nice make clean 2>&1 > $LOG
-
 function tee_color_split()
 {
 	while read; do
@@ -56,27 +55,61 @@ function log_try_kernel()
 	echo -en "${NORMAL}"
 }
 
-for i in $KLIBS; do
-	KERNEL=$(basename $i)
-	DIR=${i}/build/
-	echo -e "--------------------------------------------" >> $LOG
+function usage()
+{
+	echo -e "Usage: $0 [-t]"
+	echo -e "-t   will run: 'time ckmake; time ckmake' account for"
+	echo -e "     benchmark how long it takes to compile without ccache"
+	echo -e "     and a run after cache kicks in"
+}
+
+if [[ $# -gt 1 ]]; then
+	usage
+	exit 1
+fi
 
-	if [[ ! -d $DIR ]]; then
-		continue
+if [[ $# -eq 1 ]]; then
+	if [[ $1 != "-t" ]]; then
+		usage
+		exit 1
 	fi
+	TIME="1"
+fi
 
-	# We cannot use tee_color_split() as bash read only spits
-	# out output when a newline comes in. We can modif IFS but
-	# I am still not sure how to do this properly.
-	log_try_kernel $KERNEL | ./scripts/skip-colors >> $LOG
-	log_try_kernel $KERNEL
-
-	ionice -c 3 nice -n 20 make -s KLIB=$DIR KLIB_BUILD=$DIR -j6 -Wunused-but-set-variable &>> $LOG
-	if [[ $? -eq 0 ]]; then
-		echo -e "${GREEN}[OK]${NORMAL}" | tee_color_split
-	else
-		echo -e "${RED}[FAILED]${NORMAL}" | tee_color_split
-	fi
+function run_ckmake()
+{
+	for i in $KLIBS; do
+		KERNEL=$(basename $i)
+		DIR=${i}/build/
+		echo -e "--------------------------------------------" >> $LOG
+
+		if [[ ! -d $DIR ]]; then
+			continue
+		fi
+
+		# We cannot use tee_color_split() as bash read only spits
+		# out output when a newline comes in. We can modif IFS but
+		# I am still not sure how to do this properly.
+		log_try_kernel $KERNEL | ./scripts/skip-colors >> $LOG
+		log_try_kernel $KERNEL
+
+		ionice -c 3 nice -n 20 make -s KLIB=$DIR KLIB_BUILD=$DIR -j6 -Wunused-but-set-variable &>> $LOG
+		if [[ $? -eq 0 ]]; then
+			echo -e "${GREEN}[OK]${NORMAL}" | tee_color_split
+		else
+			echo -e "${RED}[FAILED]${NORMAL}" | tee_color_split
+		fi
+
+		nice make clean KLIB=$DIR KLIB_BUILD=$DIR 2>&1 >> $LOG
+	done
+}
+
+nice make clean 2>&1 > $LOG
+
+if [[ $TIME != "1" ]]; then
+	run_ckmake
+	exit 0
+fi
 
-	nice make clean KLIB=$DIR KLIB_BUILD=$DIR 2>&1 >> $LOG
-done
+time $0
+time $0 | egrep "real|user|sys"
-- 
2.46.0