kconfig: save kernel version in .config file

kconfig: save kernel version in .config file

[Olaf Hering]

Randy,

we need a way to turn the timestamp off when running make oldconfig.
Running make oldconfig gives always a delta, even if the .config is
unchanged. This is bad for cvs repos, it generates conflicts now if 2
people work on the same config file.
Please provide a patch to not call ctime if a non-empty enviroment
variable of your choice is set.

http://linux.bkbits.net:8080/linux-2.5/cset@411638e5ljptW-TmFM1SHBiIEg63OA

-- 
USB is for mice, FireWire is for men!

sUse lINUX ag, nÜRNBERG

[PATCH] kconfig: OVERRIDE: save kernel version in .config file

[Randy.Dunlap]

On Fri, 17 Sep 2004 17:43:46 +0200 Olaf Hering wrote:

| Randy,
| 
| we need a way to turn the timestamp off when running make oldconfig.
| Running make oldconfig gives always a delta, even if the .config is
| unchanged. This is bad for cvs repos, it generates conflicts now if 2
| people work on the same config file.
| Please provide a patch to not call ctime if a non-empty enviroment
| variable of your choice is set.

How's this?



Omit .config file timestamp in the file if the environment
variable "NOTIMESTAMP" is present (its value is not checked).

Signed-off-by: Randy Dunlap <rddunlap@osdl.org>


diffstat:=
 scripts/kconfig/confdata.c |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)

diff -Naurp ./scripts/kconfig/confdata.c~nostamp ./scripts/kconfig/confdata.c
--- ./scripts/kconfig/confdata.c~nostamp	2004-09-14 14:21:50.855120560 -0700
+++ ./scripts/kconfig/confdata.c	2004-09-17 08:51:42.050127184 -0700
@@ -270,6 +270,8 @@ int conf_write(const char *name)
 	int type, l;
 	const char *str;
 	time_t now;
+	int use_timestamp = 1;
+	char *env;
 
 	dirname[0] = 0;
 	if (name && name[0]) {
@@ -306,22 +308,28 @@ int conf_write(const char *name)
 	sym = sym_lookup("KERNELRELEASE", 0);
 	sym_calc_value(sym);
 	time(&now);
+	env = getenv("NOTIMESTAMP");
+	if (env)
+		use_timestamp = 0;
+
 	fprintf(out, "#\n"
 		     "# Automatically generated make config: don't edit\n"
 		     "# Linux kernel version: %s\n"
-		     "# %s"
+		     "%s%s"
 		     "#\n",
 		     sym_get_string_value(sym),
-		     ctime(&now));
+		     use_timestamp ? "# " : "",
+		     use_timestamp ? ctime(&now) : "");
 	if (out_h)
 		fprintf(out_h, "/*\n"
 			       " * Automatically generated C config: don't edit\n"
 			       " * Linux kernel version: %s\n"
-			       " * %s"
+			       "%s%s"
 			       " */\n"
 			       "#define AUTOCONF_INCLUDED\n",
 			       sym_get_string_value(sym),
-			       ctime(&now));
+			       use_timestamp ? " * " : "",
+			       use_timestamp ? ctime(&now) : "");
 
 	if (!sym_change_count)
 		sym_clear_all_valid();
--

Re: [PATCH] kconfig: OVERRIDE: save kernel version in .config file

[Olaf Hering]

 On Fri, Sep 17, Randy.Dunlap wrote:

> On Fri, 17 Sep 2004 17:43:46 +0200 Olaf Hering wrote:
> 
> | Randy,
> | 
> | we need a way to turn the timestamp off when running make oldconfig.
> | Running make oldconfig gives always a delta, even if the .config is
> | unchanged. This is bad for cvs repos, it generates conflicts now if 2
> | people work on the same config file.
> | Please provide a patch to not call ctime if a non-empty enviroment
> | variable of your choice is set.
> 
> How's this?

good, thanks!

-- 
USB is for mice, FireWire is for men!

sUse lINUX ag, nÜRNBERG

[PATCH] kconfig: OVERRIDE: save kernel version in .config file

[Randy.Dunlap]

On Fri, 17 Sep 2004 10:20:24 -0700 Randy.Dunlap wrote:

| On Fri, 17 Sep 2004 17:43:46 +0200 Olaf Hering wrote:
| 
| | Randy,
| | 
| | we need a way to turn the timestamp off when running make oldconfig.
| | Running make oldconfig gives always a delta, even if the .config is
| | unchanged. This is bad for cvs repos, it generates conflicts now if 2
| | people work on the same config file.
| | Please provide a patch to not call ctime if a non-empty enviroment
| | variable of your choice is set.
| 
| How's this?

Let's be a little safer in checking "NOTIMESTAMP".

Omit .config file timestamp in the file if the environment variable
"NOTIMESTAMP" exists and is non-null.

Signed-off-by: Randy Dunlap <rddunlap@osdl.org>


diffstat:=
 scripts/kconfig/confdata.c |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)

diff -Naurp ./scripts/kconfig/confdata.c~nostamp ./scripts/kconfig/confdata.c
--- ./scripts/kconfig/confdata.c~nostamp	2004-09-14 14:21:50.855120560 -0700
+++ ./scripts/kconfig/confdata.c	2004-09-17 09:31:22.655220200 -0700
@@ -270,6 +270,8 @@ int conf_write(const char *name)
 	int type, l;
 	const char *str;
 	time_t now;
+	int use_timestamp = 1;
+	char *env;
 
 	dirname[0] = 0;
 	if (name && name[0]) {
@@ -306,22 +308,28 @@ int conf_write(const char *name)
 	sym = sym_lookup("KERNELRELEASE", 0);
 	sym_calc_value(sym);
 	time(&now);
+	env = getenv("NOTIMESTAMP");
+	if (env && *env)
+		use_timestamp = 0;
+
 	fprintf(out, "#\n"
 		     "# Automatically generated make config: don't edit\n"
 		     "# Linux kernel version: %s\n"
-		     "# %s"
+		     "%s%s"
 		     "#\n",
 		     sym_get_string_value(sym),
-		     ctime(&now));
+		     use_timestamp ? "# " : "",
+		     use_timestamp ? ctime(&now) : "");
 	if (out_h)
 		fprintf(out_h, "/*\n"
 			       " * Automatically generated C config: don't edit\n"
 			       " * Linux kernel version: %s\n"
-			       " * %s"
+			       "%s%s"
 			       " */\n"
 			       "#define AUTOCONF_INCLUDED\n",
 			       sym_get_string_value(sym),
-			       ctime(&now));
+			       use_timestamp ? " * " : "",
+			       use_timestamp ? ctime(&now) : "");
 
 	if (!sym_change_count)
 		sym_clear_all_valid();


--

Re: [PATCH] kconfig: OVERRIDE: save kernel version in .config file

[Roman Zippel]

Hi,

On Sat, 16 Oct 2004, Sam Ravnborg wrote:

> Applied - but I named it KCONFIG_TIMESTAMP so people would not
> think that kbuild suddenly stopped checking timestamps.

That reminds me, I'm not really happy with this patch, it's a hack not a 
real solution, either we save the timestamp always or not at all, making 
it dependent on an environment variable is IMO ugly.
I have a patch which does some tighter checking during config loading, 
which can be used whether it's needed to write the config. Other front 
ends could use this as well (e.g. xconfig right now always ask to save
the config).

bye, Roman

Re: [PATCH] kconfig: OVERRIDE: save kernel version in .config file

[Olaf Hering]

 On Sat, Oct 16, Roman Zippel wrote:

> Hi,
> 
> On Sat, 16 Oct 2004, Sam Ravnborg wrote:
> 
> > Applied - but I named it KCONFIG_TIMESTAMP so people would not
> > think that kbuild suddenly stopped checking timestamps.
> 
> That reminds me, I'm not really happy with this patch, it's a hack not a 
> real solution, either we save the timestamp always or not at all, making 
> it dependent on an environment variable is IMO ugly.

The point is: avoid conflicts when 2 people change different parts of
the .config.
Just drop the whole thing, I doubt the timestamp matters much.

-- 
USB is for mice, FireWire is for men!

sUse lINUX ag, nÜRNBERG

Re: [PATCH] kconfig: OVERRIDE: save kernel version in .config file

[Sam Ravnborg]

On Fri, Sep 17, 2004 at 10:43:34AM -0700, Randy.Dunlap wrote:
> On Fri, 17 Sep 2004 10:20:24 -0700 Randy.Dunlap wrote:
> 
> | On Fri, 17 Sep 2004 17:43:46 +0200 Olaf Hering wrote:
> | 
> | | Randy,
> | | 
> | | we need a way to turn the timestamp off when running make oldconfig.
> | | Running make oldconfig gives always a delta, even if the .config is
> | | unchanged. This is bad for cvs repos, it generates conflicts now if 2
> | | people work on the same config file.
> | | Please provide a patch to not call ctime if a non-empty enviroment
> | | variable of your choice is set.
> | 
> | How's this?
> 
> Let's be a little safer in checking "NOTIMESTAMP".
> 
> Omit .config file timestamp in the file if the environment variable
> "NOTIMESTAMP" exists and is non-null.
> 
> Signed-off-by: Randy Dunlap <rddunlap@osdl.org>

Applied - but I named it KCONFIG_TIMESTAMP so people would not
think that kbuild suddenly stopped checking timestamps.

	Sam

Re: [PATCH] kconfig: OVERRIDE: save kernel version in .config file

[Sam Ravnborg]

On Sat, Oct 16, 2004 at 10:18:35PM +0200, Roman Zippel wrote:
> Hi,
> 
> On Sat, 16 Oct 2004, Sam Ravnborg wrote:
> 
> > Applied - but I named it KCONFIG_TIMESTAMP so people would not
> > think that kbuild suddenly stopped checking timestamps.
> 
> That reminds me, I'm not really happy with this patch, it's a hack not a 
> real solution, either we save the timestamp always or not at all, making 
> it dependent on an environment variable is IMO ugly.
> I have a patch which does some tighter checking during config loading, 
> which can be used whether it's needed to write the config. Other front 
> ends could use this as well (e.g. xconfig right now always ask to save
> the config).

The better approach for sure. When we have this in place I will
delete the KCONFIG_NOTIMESTMAP hack.

	Sam