[PATCH] move some more intilization out of drivers/char/mem.c

[PATCH] move some more intilization out of drivers/char/mem.c

[Christoph Hellwig]

keeping init order the same..

--- 1.58/drivers/char/Makefile	Sat Jun  7 15:41:09 2003
+++ edited/drivers/char/Makefile	Sat Sep 20 13:13:49 2003
@@ -7,7 +7,7 @@
 #
 FONTMAPFILE = cp437.uni
 
-obj-y	 += mem.o tty_io.o n_tty.o tty_ioctl.o pty.o misc.o random.o
+obj-y	 += mem.o random.o tty_io.o n_tty.o tty_ioctl.o pty.o misc.o
 
 obj-$(CONFIG_VT) += vt_ioctl.o vc_screen.o consolemap.o consolemap_deftbl.o selection.o keyboard.o
 obj-$(CONFIG_HW_CONSOLE) += vt.o defkeymap.o
--- 1.43/drivers/char/mem.c	Tue Aug 26 18:25:41 2003
+++ edited/drivers/char/mem.c	Sat Sep 20 13:12:30 2003
@@ -680,17 +680,8 @@
 				S_IFCHR | devlist[i].mode, devlist[i].name);
 	}
 	
-	rand_initialize();
 #if defined (CONFIG_FB)
 	fbmem_init();
-#endif
-	tty_init();
-#ifdef CONFIG_M68K_PRINTER
-	lp_m68k_init();
-#endif
-	misc_init();
-#ifdef CONFIG_FTAPE
-	ftape_init();
 #endif
 	return 0;
 }
--- 1.23/drivers/char/misc.c	Wed Sep 17 15:42:51 2003
+++ edited/drivers/char/misc.c	Sat Sep 20 13:12:30 2003
@@ -277,7 +277,7 @@
 EXPORT_SYMBOL(misc_register);
 EXPORT_SYMBOL(misc_deregister);
 
-int __init misc_init(void)
+static int __init misc_init(void)
 {
 #ifdef CONFIG_PROC_FS
 	struct proc_dir_entry *ent;
@@ -320,3 +320,4 @@
 	}
 	return 0;
 }
+module_init(misc_init);
--- 1.38/drivers/char/random.c	Wed Sep 10 08:41:47 2003
+++ edited/drivers/char/random.c	Sat Sep 20 13:12:30 2003
@@ -1493,7 +1493,7 @@
 	}
 }
 
-void __init rand_initialize(void)
+static void __init rand_initialize(void)
 {
 	int i;
 
@@ -1516,6 +1516,7 @@
 	memset(&extract_timer_state, 0, sizeof(struct timer_rand_state));
 	extract_timer_state.dont_count_entropy = 1;
 }
+module_init(rand_initialize);
 
 void rand_initialize_irq(int irq)
 {
--- 1.119/drivers/char/tty_io.c	Fri Sep  5 13:31:50 2003
+++ edited/drivers/char/tty_io.c	Sat Sep 20 13:12:30 2003
@@ -2423,7 +2423,7 @@
  * Ok, now we can initialize the rest of the tty devices and can count
  * on memory allocations, interrupts etc..
  */
-void __init tty_init(void)
+static void __init tty_init(void)
 {
 	strcpy(tty_cdev.kobj.name, "dev.tty");
 	cdev_init(&tty_cdev, &tty_fops);
@@ -2513,3 +2513,4 @@
 	a2232board_init();
 #endif
 }
+module_init(tty_init);
--- 1.4/drivers/char/ftape/lowlevel/ftape-init.c	Mon Feb  3 21:19:37 2003
+++ edited/drivers/char/ftape/lowlevel/ftape-init.c	Sat Sep 20 13:12:30 2003
@@ -55,14 +55,24 @@
 char ft_dat[] __initdata = "$Date: 1997/11/06 00:38:08 $";
 
 
+#ifndef CONFIG_FT_NO_TRACE_AT_ALL
+static int ft_tracing = -1;
+#endif
+
+
 /*  Called by modules package when installing the driver
  *  or by kernel during the initialization phase
  */
-int __init ftape_init(void)
+static int __init ftape_init(void)
 {
 	TRACE_FUN(ft_t_flow);
 
 #ifdef MODULE
+#ifndef CONFIG_FT_NO_TRACE_AT_ALL
+	if (ft_tracing != -1) {
+		ftape_tracing = ft_tracing;
+	}
+#endif
 	printk(KERN_INFO FTAPE_VERSION "\n");
         if (TRACE_LEVEL >= ft_t_info) {
 		printk(
@@ -112,13 +122,6 @@
 #endif
 	TRACE_EXIT 0;
 }
-
-#ifdef MODULE
-
-#ifndef CONFIG_FT_NO_TRACE_AT_ALL
-static int ft_tracing = -1;
-#endif
-
 #define FT_MOD_PARM(var,type,desc) \
 	MODULE_PARM(var,type); MODULE_PARM_DESC(var,desc)
 
@@ -141,21 +144,7 @@
 	"QIC-117 driver for QIC-40/80/3010/3020 floppy tape drives.");
 MODULE_LICENSE("GPL");
 
-/*  Called by modules package when installing the driver
- */
-int init_module(void)
-{
-#ifndef CONFIG_FT_NO_TRACE_AT_ALL
-	if (ft_tracing != -1) {
-		ftape_tracing = ft_tracing;
-	}
-#endif
-	return ftape_init();
-}
-
-/*  Called by modules package when removing the driver
- */
-void cleanup_module(void)
+static void __exit ftape_exit(void)
 {
 	TRACE_FUN(ft_t_flow);
 
@@ -167,3 +156,6 @@
 	TRACE_EXIT;
 }
 #endif /* MODULE */
+
+module_init(ftape_init);
+module_exit(ftape_exit);

Re: [PATCH] move some more intilization out of drivers/char/mem.c

[Andrew Morton]

Christoph Hellwig <hch@lst.de> wrote:
>
> keeping init order the same..

drivers/char/random.c:1497: warning: static declaration for `rand_initialize' follows non-static
drivers/char/random.c:1519: warning: initialization from incompatible pointer type
drivers/char/tty_io.c:2427: warning: static declaration for `tty_init' follows non-static
drivers/char/tty_io.c:2516: warning: initialization from incompatible pointer type
drivers/char/misc.c:281: warning: static declaration for `misc_init' follows non-static

Please compile-test things...

Re: [PATCH] move some more intilization out of drivers/char/mem.c

[Christoph Hellwig]

On Sat, Sep 20, 2003 at 04:06:45PM -0700, Andrew Morton wrote:
> drivers/char/tty_io.c:2516: warning: initialization from incompatible pointer type
> drivers/char/misc.c:281: warning: static declaration for `misc_init' follows non-static
> 
> Please compile-test things...

Well, I compiled this here.  I see, looks like I lost half of the patch
when sending it to you.  Sorryh for that, here's the full patch:


--- 1.58/drivers/char/Makefile	Sat Jun  7 15:41:09 2003
+++ edited/drivers/char/Makefile	Sat Sep 20 13:13:49 2003
@@ -7,7 +7,7 @@
 #
 FONTMAPFILE = cp437.uni
 
-obj-y	 += mem.o tty_io.o n_tty.o tty_ioctl.o pty.o misc.o random.o
+obj-y	 += mem.o random.o tty_io.o n_tty.o tty_ioctl.o pty.o misc.o
 
 obj-$(CONFIG_VT) += vt_ioctl.o vc_screen.o consolemap.o consolemap_deftbl.o selection.o keyboard.o
 obj-$(CONFIG_HW_CONSOLE) += vt.o defkeymap.o
--- 1.43/drivers/char/mem.c	Tue Aug 26 18:25:41 2003
+++ edited/drivers/char/mem.c	Sat Sep 20 13:12:30 2003
@@ -680,17 +680,8 @@
 				S_IFCHR | devlist[i].mode, devlist[i].name);
 	}
 	
-	rand_initialize();
 #if defined (CONFIG_FB)
 	fbmem_init();
-#endif
-	tty_init();
-#ifdef CONFIG_M68K_PRINTER
-	lp_m68k_init();
-#endif
-	misc_init();
-#ifdef CONFIG_FTAPE
-	ftape_init();
 #endif
 	return 0;
 }
--- 1.23/drivers/char/misc.c	Wed Sep 17 15:42:51 2003
+++ edited/drivers/char/misc.c	Sat Sep 20 13:12:30 2003
@@ -277,7 +277,7 @@
 EXPORT_SYMBOL(misc_register);
 EXPORT_SYMBOL(misc_deregister);
 
-int __init misc_init(void)
+static int __init misc_init(void)
 {
 #ifdef CONFIG_PROC_FS
 	struct proc_dir_entry *ent;
@@ -320,3 +320,4 @@
 	}
 	return 0;
 }
+module_init(misc_init);
--- 1.38/drivers/char/random.c	Wed Sep 10 08:41:47 2003
+++ edited/drivers/char/random.c	Sat Sep 20 13:12:30 2003
@@ -1493,7 +1493,7 @@
 	}
 }
 
-void __init rand_initialize(void)
+static void __init rand_initialize(void)
 {
 	int i;
 
@@ -1516,6 +1516,7 @@
 	memset(&extract_timer_state, 0, sizeof(struct timer_rand_state));
 	extract_timer_state.dont_count_entropy = 1;
 }
+module_init(rand_initialize);
 
 void rand_initialize_irq(int irq)
 {
--- 1.119/drivers/char/tty_io.c	Fri Sep  5 13:31:50 2003
+++ edited/drivers/char/tty_io.c	Sat Sep 20 13:12:30 2003
@@ -2423,7 +2423,7 @@
  * Ok, now we can initialize the rest of the tty devices and can count
  * on memory allocations, interrupts etc..
  */
-void __init tty_init(void)
+static void __init tty_init(void)
 {
 	strcpy(tty_cdev.kobj.name, "dev.tty");
 	cdev_init(&tty_cdev, &tty_fops);
@@ -2513,3 +2513,4 @@
 	a2232board_init();
 #endif
 }
+module_init(tty_init);
--- 1.4/drivers/char/ftape/lowlevel/ftape-init.c	Mon Feb  3 21:19:37 2003
+++ edited/drivers/char/ftape/lowlevel/ftape-init.c	Sun Sep 21 08:22:04 2003
@@ -55,14 +55,24 @@
 char ft_dat[] __initdata = "$Date: 1997/11/06 00:38:08 $";
 
 
+#ifndef CONFIG_FT_NO_TRACE_AT_ALL
+static int ft_tracing = -1;
+#endif
+
+
 /*  Called by modules package when installing the driver
  *  or by kernel during the initialization phase
  */
-int __init ftape_init(void)
+static int __init ftape_init(void)
 {
 	TRACE_FUN(ft_t_flow);
 
 #ifdef MODULE
+#ifndef CONFIG_FT_NO_TRACE_AT_ALL
+	if (ft_tracing != -1) {
+		ftape_tracing = ft_tracing;
+	}
+#endif
 	printk(KERN_INFO FTAPE_VERSION "\n");
         if (TRACE_LEVEL >= ft_t_info) {
 		printk(
@@ -112,13 +122,6 @@
 #endif
 	TRACE_EXIT 0;
 }
-
-#ifdef MODULE
-
-#ifndef CONFIG_FT_NO_TRACE_AT_ALL
-static int ft_tracing = -1;
-#endif
-
 #define FT_MOD_PARM(var,type,desc) \
 	MODULE_PARM(var,type); MODULE_PARM_DESC(var,desc)
 
@@ -141,21 +144,7 @@
 	"QIC-117 driver for QIC-40/80/3010/3020 floppy tape drives.");
 MODULE_LICENSE("GPL");
 
-/*  Called by modules package when installing the driver
- */
-int init_module(void)
-{
-#ifndef CONFIG_FT_NO_TRACE_AT_ALL
-	if (ft_tracing != -1) {
-		ftape_tracing = ft_tracing;
-	}
-#endif
-	return ftape_init();
-}
-
-/*  Called by modules package when removing the driver
- */
-void cleanup_module(void)
+static void __exit ftape_exit(void)
 {
 	TRACE_FUN(ft_t_flow);
 
@@ -166,4 +155,6 @@
         printk(KERN_INFO "ftape: unloaded.\n");
 	TRACE_EXIT;
 }
-#endif /* MODULE */
+
+module_init(ftape_init);
+module_exit(ftape_exit);
--- 1.3/include/linux/ftape.h	Tue Apr  1 01:55:26 2003
+++ edited/include/linux/ftape.h	Sat Sep 20 13:12:31 2003
@@ -199,8 +199,6 @@
 #define ABS(a)          ((a) < 0 ? -(a) : (a))
 #define NR_ITEMS(x)     (int)(sizeof(x)/ sizeof(*x))
 
-extern int ftape_init(void);
-
 #endif  /* __KERNEL__ */
 
 #endif
--- 1.9/include/linux/miscdevice.h	Wed Sep 17 15:43:05 2003
+++ edited/include/linux/miscdevice.h	Sat Sep 20 13:12:31 2003
@@ -36,8 +36,6 @@
 
 #define TUN_MINOR	     200
 
-extern int misc_init(void);
-
 struct miscdevice 
 {
 	int minor;
--- 1.2/include/linux/random.h	Mon Oct 28 20:57:55 2002
+++ edited/include/linux/random.h	Sat Sep 20 13:12:31 2003
@@ -42,7 +42,6 @@
 
 #ifdef __KERNEL__
 
-extern void rand_initialize(void);
 extern void rand_initialize_irq(int irq);
 
 extern void batch_entropy_store(u32 a, u32 b, int num);
--- 1.20/include/linux/tty.h	Tue Aug 26 18:25:40 2003
+++ edited/include/linux/tty.h	Sat Sep 20 13:12:31 2003
@@ -351,7 +351,6 @@
 
 extern int lp_init(void);
 extern int pty_init(void);
-extern void tty_init(void);
 extern int mxser_init(void);
 extern int moxa_init(void);
 extern int ip2_init(void);

Re: [PATCH] move some more intilization out of drivers/char/mem.c

[Andrew Morton]

Christoph Hellwig <hch@lst.de> wrote:
>
> > Please compile-test things...
> 
>  Well, I compiled this here.  I see, looks like I lost half of the patch
>  when sending it to you.  Sorryh for that, here's the full patch:

It still generates warnings.  I suggest you build kernels with a script
which saves up stderr and spits it all out at the end.  That way, these
things are noticed.



 drivers/char/random.c |    3 ++-
 drivers/char/tty_io.c |    3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff -puN drivers/char/random.c~char-init-cleanup-fix drivers/char/random.c
--- 25/drivers/char/random.c~char-init-cleanup-fix	2003-09-20 23:45:28.000000000 -0700
+++ 25-akpm/drivers/char/random.c	2003-09-20 23:45:46.000000000 -0700
@@ -1493,7 +1493,7 @@ static void init_std_data(struct entropy
 	}
 }
 
-static void __init rand_initialize(void)
+static int __init rand_initialize(void)
 {
 	int i;
 
@@ -1515,6 +1515,7 @@ static void __init rand_initialize(void)
 	memset(&mouse_timer_state, 0, sizeof(struct timer_rand_state));
 	memset(&extract_timer_state, 0, sizeof(struct timer_rand_state));
 	extract_timer_state.dont_count_entropy = 1;
+	return 0;
 }
 module_init(rand_initialize);
 
diff -puN drivers/char/tty_io.c~char-init-cleanup-fix drivers/char/tty_io.c
--- 25/drivers/char/tty_io.c~char-init-cleanup-fix	2003-09-20 23:45:35.000000000 -0700
+++ 25-akpm/drivers/char/tty_io.c	2003-09-20 23:46:06.000000000 -0700
@@ -2423,7 +2423,7 @@ static struct cdev vc0_cdev;
  * Ok, now we can initialize the rest of the tty devices and can count
  * on memory allocations, interrupts etc..
  */
-static void __init tty_init(void)
+static int __init tty_init(void)
 {
 	strcpy(tty_cdev.kobj.name, "dev.tty");
 	cdev_init(&tty_cdev, &tty_fops);
@@ -2512,5 +2512,6 @@ static void __init tty_init(void)
 #ifdef CONFIG_A2232
 	a2232board_init();
 #endif
+	return 0;
 }
 module_init(tty_init);

_

Re: [PATCH] move some more intilization out of drivers/char/mem.c

[Christoph Hellwig]

On Sat, Sep 20, 2003 at 11:48:53PM -0700, Andrew Morton wrote:
> Christoph Hellwig <hch@lst.de> wrote:
> >
> > > Please compile-test things...
> > 
> >  Well, I compiled this here.  I see, looks like I lost half of the patch
> >  when sending it to you.  Sorryh for that, here's the full patch:
> 
> It still generates warnings.  I suggest you build kernels with a script
> which saves up stderr and spits it all out at the end.  That way, these
> things are noticed.

Well, I do that, but they slipped through anyway.  I did a completle
rebuild now and saw them.  I really need a filter for all those anoying
warnings from the debian sid assembler..

Re: [PATCH] move some more intilization out of drivers/char/mem.c

[Muli Ben-Yehuda]

[-- Attachment #1: Type: text/plain, Size: 1800 bytes --]

On Sat, Sep 20, 2003 at 11:48:53PM -0700, Andrew Morton wrote:
> Christoph Hellwig <hch@lst.de> wrote:
> >
> > > Please compile-test things...
> > 
> >  Well, I compiled this here.  I see, looks like I lost half of the patch
> >  when sending it to you.  Sorryh for that, here's the full patch:
> 
> It still generates warnings.  I suggest you build kernels with a script
> which saves up stderr and spits it all out at the end.  That way, these
> things are noticed.

This might be a good time to recommend -Werror. Last time it came up
(http://marc.theaimsgroup.com/?l=linux-kernel&m=102654562025374&w=2),
Alan was dead set against it, and Linus did not apply it, but did
think it had some merit
(http://marc.theaimsgroup.com/?l=linux-kernel&m=102658611213914&w=2). 

Compiling 2.6.0-t5-cvs with my .config and -Werror uncovered only two
warnings. Patches sent seperately. 

diff --exclude-from /home/muli/p/dontdiff -Naur ../linux-2.5/Makefile 2.6.0-t5-Werror/Makefile
--- ../linux-2.5/Makefile	Wed Sep 10 16:21:16 2003
+++ 2.6.0-t5-Werror/Makefile	Sun Sep 21 09:59:29 2003
@@ -73,7 +73,7 @@
 
 HOSTCC  	= gcc
 HOSTCXX  	= g++
-HOSTCFLAGS	= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
+HOSTCFLAGS	= -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer
 HOSTCXXFLAGS	= -O2
 
 
@@ -223,8 +223,8 @@
 NOSTDINC_FLAGS  = -nostdinc -iwithprefix include
 
 CPPFLAGS	:= -D__KERNEL__ -Iinclude
-CFLAGS 		:= -Wall -Wstrict-prototypes -Wno-trigraphs -O2 \
-	  	   -fno-strict-aliasing -fno-common
+CFLAGS 		:= -Wall -Werror -Wstrict-prototypes -Wno-trigraphs \
+		   -O2 -fno-strict-aliasing -fno-common
 AFLAGS		:= -D__ASSEMBLY__
 
 export	VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION KERNELRELEASE ARCH \

--  
Muli Ben-Yehuda
http://www.mulix.org


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Re: [PATCH] move some more intilization out of drivers/char/mem.c

[Randy.Dunlap]

On Sun, 21 Sep 2003 09:05:24 +0200 Christoph Hellwig <hch@lst.de> wrote:

| On Sat, Sep 20, 2003 at 11:48:53PM -0700, Andrew Morton wrote:
| > Christoph Hellwig <hch@lst.de> wrote:
| > >
| > > > Please compile-test things...
| > > 
| > >  Well, I compiled this here.  I see, looks like I lost half of the patch
| > >  when sending it to you.  Sorryh for that, here's the full patch:
| > 
| > It still generates warnings.  I suggest you build kernels with a script
| > which saves up stderr and spits it all out at the end.  That way, these
| > things are noticed.
| 
| Well, I do that, but they slipped through anyway.  I did a completle
| rebuild now and saw them.  I really need a filter for all those anoying
| warnings from the debian sid assembler..

I don't know what the assembler messages are, but I often do this:

make -j4 bzImage modules > buildk.out 2>&1

bldlogstrip buildk.out > buildkk.out

where 'bldlogstrip' is:

#! /bin/sh
# strip lines that contain CC, LD, "standard input", "In function"
egrep -v "CC|LD" $1 | grep -v "standard input" | grep -v "In function"

to get down to messages to focus on.

--
~Randy

Re: [PATCH] move some more intilization out of drivers/char/mem.c

[Adrian Bunk]

On Sun, Sep 21, 2003 at 10:54:30AM +0300, Muli Ben-Yehuda wrote:
> On Sat, Sep 20, 2003 at 11:48:53PM -0700, Andrew Morton wrote:
> > Christoph Hellwig <hch@lst.de> wrote:
> > >
> > > > Please compile-test things...
> > > 
> > >  Well, I compiled this here.  I see, looks like I lost half of the patch
> > >  when sending it to you.  Sorryh for that, here's the full patch:
> > 
> > It still generates warnings.  I suggest you build kernels with a script
> > which saves up stderr and spits it all out at the end.  That way, these
> > things are noticed.
> 
> This might be a good time to recommend -Werror. Last time it came up
> (http://marc.theaimsgroup.com/?l=linux-kernel&m=102654562025374&w=2),
> Alan was dead set against it, and Linus did not apply it, but did
> think it had some merit
> (http://marc.theaimsgroup.com/?l=linux-kernel&m=102658611213914&w=2). 
> 
> Compiling 2.6.0-t5-cvs with my .config and -Werror uncovered only two
> warnings. Patches sent seperately. 
>...

In 2.6, warnings are very visible, and many people are working on 
reducing the number of warning.

A full build of 2.6 gives between 200 and 300 warnings with gcc 3.3 
including harmless ones.

You get several "unused variable" warnings when you disable e.g.
CONFIG_PROC_FS.

When compiling with a different compiler version (e.g. 2.95) you get a 
similar number of warnings, but different warnings.

Some warnings are the fault of gcc (and noone will fix gcc 2.95 or the 
unofficial gcc 2.96).


Adding -Werror will turn into a maintenance nightmare.


> Muli Ben-Yehuda

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed