[PATCH 1/1] md: drivers/md/unroll.pl replaced with awk analog, revisited
From: Vladimir Dronnikov
Date: Tue Oct 06 2009 - 01:34:05 EST
From: Vladimir Dronnikov <dronnikov@xxxxxxxxx>
drivers/md/unroll.pl replaced by awk script to drop build-time
dependency on perl
Signed-off-by: Vladimir Dronnikov <dronnikov@xxxxxxxxx>
---
drivers/md/Makefile | 22 ++++++++--------
drivers/md/raid6altivec.uc | 2 -
drivers/md/raid6int.uc | 2 -
drivers/md/raid6test/Makefile | 42 ++++++++++++++++----------------
drivers/md/unroll.awk | 20 +++++++++++++++
drivers/md/unroll.pl | 24 ------------------
6 files changed, 54 insertions(+), 58 deletions(-)
--- linux-2.6.31.orig/drivers/md/Makefile Wed Sep 9 22:13:59 2009
+++ linux-2.6.31/drivers/md/Makefile Wed Oct 7 05:50:01 2009
@@ -46,7 +48,7 @@
obj-$(CONFIG_DM_ZERO) += dm-zero.o
quiet_cmd_unroll = UNROLL $@
- cmd_unroll = $(PERL) $(srctree)/$(src)/unroll.pl $(UNROLL) \
+ cmd_unroll = $(AWK) -f$(srctree)/$(src)/unroll.awk -vN=$(UNROLL) \
< $< > $@ || ( rm -f $@ && exit 1 )
ifeq ($(CONFIG_ALTIVEC),y)
@@ -59,56 +61,56 @@
targets += raid6int1.c
$(obj)/raid6int1.c: UNROLL := 1
-$(obj)/raid6int1.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+$(obj)/raid6int1.c: $(src)/raid6int.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
targets += raid6int2.c
$(obj)/raid6int2.c: UNROLL := 2
-$(obj)/raid6int2.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+$(obj)/raid6int2.c: $(src)/raid6int.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
targets += raid6int4.c
$(obj)/raid6int4.c: UNROLL := 4
-$(obj)/raid6int4.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+$(obj)/raid6int4.c: $(src)/raid6int.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
targets += raid6int8.c
$(obj)/raid6int8.c: UNROLL := 8
-$(obj)/raid6int8.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+$(obj)/raid6int8.c: $(src)/raid6int.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
targets += raid6int16.c
$(obj)/raid6int16.c: UNROLL := 16
-$(obj)/raid6int16.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+$(obj)/raid6int16.c: $(src)/raid6int.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
targets += raid6int32.c
$(obj)/raid6int32.c: UNROLL := 32
-$(obj)/raid6int32.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+$(obj)/raid6int32.c: $(src)/raid6int.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
CFLAGS_raid6altivec1.o += $(altivec_flags)
targets += raid6altivec1.c
$(obj)/raid6altivec1.c: UNROLL := 1
-$(obj)/raid6altivec1.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
+$(obj)/raid6altivec1.c: $(src)/raid6altivec.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
CFLAGS_raid6altivec2.o += $(altivec_flags)
targets += raid6altivec2.c
$(obj)/raid6altivec2.c: UNROLL := 2
-$(obj)/raid6altivec2.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
+$(obj)/raid6altivec2.c: $(src)/raid6altivec.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
CFLAGS_raid6altivec4.o += $(altivec_flags)
targets += raid6altivec4.c
$(obj)/raid6altivec4.c: UNROLL := 4
-$(obj)/raid6altivec4.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
+$(obj)/raid6altivec4.c: $(src)/raid6altivec.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
CFLAGS_raid6altivec8.o += $(altivec_flags)
targets += raid6altivec8.c
$(obj)/raid6altivec8.c: UNROLL := 8
-$(obj)/raid6altivec8.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
+$(obj)/raid6altivec8.c: $(src)/raid6altivec.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
quiet_cmd_mktable = TABLE $@
--- linux-2.6.31.orig/drivers/md/raid6altivec.uc Wed Sep 9 22:13:59 2009
+++ linux-2.6.31/drivers/md/raid6altivec.uc Mon Oct 5 20:10:15 2009
@@ -15,7 +15,7 @@
*
* $#-way unrolled portable integer math RAID-6 instruction set
*
- * This file is postprocessed using unroll.pl
+ * This file is postprocessed using unroll.awk
*
* <benh> hpa: in process,
* you can just "steal" the vec unit with enable_kernel_altivec() (but
--- linux-2.6.31.orig/drivers/md/raid6int.uc Wed Sep 9 22:13:59 2009
+++ linux-2.6.31/drivers/md/raid6int.uc Mon Oct 5 20:10:15 2009
@@ -15,7 +15,7 @@
*
* $#-way unrolled portable integer math RAID-6 instruction set
*
- * This file is postprocessed using unroll.pl
+ * This file is postprocessed using unroll.awk
*/
#include <linux/raid/pq.h>
--- linux-2.6.31.orig/drivers/md/raid6test/Makefile Wed Sep 9 22:13:59 2009
+++ linux-2.6.31/drivers/md/raid6test/Makefile Wed Oct 7 05:51:03 2009
@@ -7,7 +7,7 @@
OPTFLAGS = -O2 # Adjust as desired
CFLAGS = -I.. -I ../../../include -g $(OPTFLAGS)
LD = ld
-PERL = perl
+AWK = awk
AR = ar
RANLIB = ranlib
@@ -35,35 +35,35 @@
raid6test: test.c raid6.a
$(CC) $(CFLAGS) -o raid6test $^
-raid6altivec1.c: raid6altivec.uc ../unroll.pl
- $(PERL) ../unroll.pl 1 < raid6altivec.uc > $@
+raid6altivec1.c: raid6altivec.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=1 < raid6altivec.uc > $@
-raid6altivec2.c: raid6altivec.uc ../unroll.pl
- $(PERL) ../unroll.pl 2 < raid6altivec.uc > $@
+raid6altivec2.c: raid6altivec.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=2 < raid6altivec.uc > $@
-raid6altivec4.c: raid6altivec.uc ../unroll.pl
- $(PERL) ../unroll.pl 4 < raid6altivec.uc > $@
+raid6altivec4.c: raid6altivec.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=4 < raid6altivec.uc > $@
-raid6altivec8.c: raid6altivec.uc ../unroll.pl
- $(PERL) ../unroll.pl 8 < raid6altivec.uc > $@
+raid6altivec8.c: raid6altivec.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=8 < raid6altivec.uc > $@
-raid6int1.c: raid6int.uc ../unroll.pl
- $(PERL) ../unroll.pl 1 < raid6int.uc > $@
+raid6int1.c: raid6int.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=1 < raid6int.uc > $@
-raid6int2.c: raid6int.uc ../unroll.pl
- $(PERL) ../unroll.pl 2 < raid6int.uc > $@
+raid6int2.c: raid6int.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=2 < raid6int.uc > $@
-raid6int4.c: raid6int.uc ../unroll.pl
- $(PERL) ../unroll.pl 4 < raid6int.uc > $@
+raid6int4.c: raid6int.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=4 < raid6int.uc > $@
-raid6int8.c: raid6int.uc ../unroll.pl
- $(PERL) ../unroll.pl 8 < raid6int.uc > $@
+raid6int8.c: raid6int.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=8 < raid6int.uc > $@
-raid6int16.c: raid6int.uc ../unroll.pl
- $(PERL) ../unroll.pl 16 < raid6int.uc > $@
+raid6int16.c: raid6int.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=16 < raid6int.uc > $@
-raid6int32.c: raid6int.uc ../unroll.pl
- $(PERL) ../unroll.pl 32 < raid6int.uc > $@
+raid6int32.c: raid6int.uc ../unroll.awk
+ $(AWK) ../unroll.awk -vN=32 < raid6int.uc > $@
raid6tables.c: mktables
./mktables > raid6tables.c
--- /dev/null Thu Jan 1 00:00:00 1970
+++ linux-2.6.31/drivers/md/unroll.awk Wed Oct 7 05:52:13 2009
@@ -0,0 +1,20 @@
+
+# This filter requires one command line option of form -vN=n
+# where n must be a decimal number.
+#
+# Repeat each input line containing $$ n times, replacing $$ with 0...n-1.
+# Replace each $# with n, and each $* with a single $.
+
+BEGIN {
+ n = N + 0
+}
+{
+ if (/\$\$/) { rep = n } else { rep = 1 }
+ for (i = 0; i < rep; ++i) {
+ tmp = $0
+ gsub(/\$\$/, i, tmp)
+ gsub(/\$\#/, n, tmp)
+ gsub(/\$\*/, "$", tmp)
+ print tmp
+ }
+}
--- linux-2.6.31.orig/drivers/md/unroll.pl Wed Sep 9 22:13:59 2009
+++ /dev/null Thu Jan 1 00:00:00 1970
@@ -1,24 +0,0 @@
-#!/usr/bin/perl
-#
-# Take a piece of C code and for each line which contains the sequence $$
-# repeat n times with $ replaced by 0...n-1; the sequence $# is replaced
-# by the unrolling factor, and $* with a single $
-#
-
-($n) = @ARGV;
-$n += 0;
-
-while ( defined($line = <STDIN>) ) {
- if ( $line =~ /\$\$/ ) {
- $rep = $n;
- } else {
- $rep = 1;
- }
- for ( $i = 0 ; $i < $rep ; $i++ ) {
- $tmp = $line;
- $tmp =~ s/\$\$/$i/g;
- $tmp =~ s/\$\#/$n/g;
- $tmp =~ s/\$\*/\$/g;
- print $tmp;
- }
-}
--
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