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Date: Wed, 21 Feb 2007 15:25:19 -0500
From: Jeff Dike <jdike@...toit.com>
To: akpm@...l.org
cc: linux-kernel@...r.kernel.org,
user-mode-linux-devel@...ts.sourceforge.net
Subject: [PATCH 1/4] UML - delete unused code
Get rid of a bunch of unused stuff -
cpu_feature had no users
linux_prog is little-used, so its declaration is moved to the
user for easy deletion when the whole file goes away
a long-unused debugging aid in helper.c is gone
Signed-off-by: Jeff Dike <jdike@...toit.com>
--
arch/um/include/kern_util.h | 1 -
arch/um/include/user_util.h | 1 -
arch/um/kernel/tt/gdb.c | 2 ++
arch/um/os-Linux/helper.c | 11 -----------
arch/um/os-Linux/main.c | 8 +-------
arch/um/sys-i386/bugs.c | 23 -----------------------
arch/um/sys-x86_64/bugs.c | 23 -----------------------
7 files changed, 3 insertions(+), 66 deletions(-)
Index: linux-2.6.17/arch/um/include/user_util.h
===================================================================
--- linux-2.6.17.orig/arch/um/include/user_util.h 2007-02-19 11:39:11.000000000 -0500
+++ linux-2.6.17/arch/um/include/user_util.h 2007-02-19 12:52:22.000000000 -0500
@@ -62,7 +62,6 @@ extern void kill_child_dead(int pid);
extern int cont(int pid);
extern void check_sigio(void);
extern void arch_check_bugs(void);
-extern int cpu_feature(char *what, char *buf, int len);
extern int arch_handle_signal(int sig, union uml_pt_regs *regs);
extern int arch_fixup(unsigned long address, void *sc_ptr);
extern void arch_init_thread(void);
Index: linux-2.6.17/arch/um/sys-i386/bugs.c
===================================================================
--- linux-2.6.17.orig/arch/um/sys-i386/bugs.c 2006-12-02 09:56:56.000000000 -0500
+++ linux-2.6.17/arch/um/sys-i386/bugs.c 2007-02-19 12:52:22.000000000 -0500
@@ -79,29 +79,6 @@ static int find_cpuinfo_line(int fd, cha
return(0);
}
-int cpu_feature(char *what, char *buf, int len)
-{
- int fd, ret = 0;
-
- fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0);
- if(fd < 0){
- printk("Couldn't open /proc/cpuinfo, err = %d\n", -fd);
- return(0);
- }
-
- if(!find_cpuinfo_line(fd, what, buf, len)){
- printk("Couldn't find '%s' line in /proc/cpuinfo\n", what);
- goto out_close;
- }
-
- token(fd, buf, len, '\n');
- ret = 1;
-
- out_close:
- os_close_file(fd);
- return(ret);
-}
-
static int check_cpu_flag(char *feature, int *have_it)
{
char buf[MAXTOKEN], c;
Index: linux-2.6.17/arch/um/sys-x86_64/bugs.c
===================================================================
--- linux-2.6.17.orig/arch/um/sys-x86_64/bugs.c 2006-06-17 21:49:35.000000000 -0400
+++ linux-2.6.17/arch/um/sys-x86_64/bugs.c 2007-02-19 12:52:22.000000000 -0500
@@ -88,29 +88,6 @@ static int find_cpuinfo_line(int fd, cha
return(0);
}
-int cpu_feature(char *what, char *buf, int len)
-{
- int fd, ret = 0;
-
- fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0);
- if(fd < 0){
- printk("Couldn't open /proc/cpuinfo, err = %d\n", -fd);
- return(0);
- }
-
- if(!find_cpuinfo_line(fd, what, buf, len)){
- printk("Couldn't find '%s' line in /proc/cpuinfo\n", what);
- goto out_close;
- }
-
- token(fd, buf, len, '\n');
- ret = 1;
-
- out_close:
- os_close_file(fd);
- return(ret);
-}
-
/* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
Index: linux-2.6.17/arch/um/include/kern_util.h
===================================================================
--- linux-2.6.17.orig/arch/um/include/kern_util.h 2007-02-19 11:39:11.000000000 -0500
+++ linux-2.6.17/arch/um/include/kern_util.h 2007-02-19 12:52:22.000000000 -0500
@@ -23,7 +23,6 @@ struct kern_handlers {
extern const struct kern_handlers handlinfo_kern;
extern int ncpus;
-extern char *linux_prog;
extern char *gdb_init;
extern int kmalloc_ok;
extern int jail;
Index: linux-2.6.17/arch/um/kernel/tt/gdb.c
===================================================================
--- linux-2.6.17.orig/arch/um/kernel/tt/gdb.c 2006-06-17 21:49:35.000000000 -0400
+++ linux-2.6.17/arch/um/kernel/tt/gdb.c 2007-02-19 12:52:22.000000000 -0500
@@ -115,6 +115,8 @@ struct gdb_data {
int err;
};
+extern char *linux_prog;
+
static void config_gdb_cb(void *arg)
{
struct gdb_data *data = arg;
Index: linux-2.6.17/arch/um/os-Linux/main.c
===================================================================
--- linux-2.6.17.orig/arch/um/os-Linux/main.c 2007-02-19 11:39:08.000000000 -0500
+++ linux-2.6.17/arch/um/os-Linux/main.c 2007-02-19 12:52:22.000000000 -0500
@@ -25,12 +25,7 @@
#include "os.h"
#include "um_malloc.h"
-/* Set in set_stklim, which is called from main and __wrap_malloc.
- * __wrap_malloc only calls it if main hasn't started.
- */
-unsigned long stacksizelim;
-
-/* Set in main */
+/* Set in main, unchanged thereafter */
char *linux_prog;
#define PGD_BOUND (4 * 1024 * 1024)
@@ -52,7 +47,6 @@ static void set_stklim(void)
exit(1);
}
}
- stacksizelim = (lim.rlim_cur + PGD_BOUND - 1) & ~(PGD_BOUND - 1);
}
static __init void do_uml_initcalls(void)
Index: linux-2.6.17/arch/um/os-Linux/helper.c
===================================================================
--- linux-2.6.17.orig/arch/um/os-Linux/helper.c 2007-02-19 11:39:05.000000000 -0500
+++ linux-2.6.17/arch/um/os-Linux/helper.c 2007-02-19 12:52:22.000000000 -0500
@@ -25,23 +25,12 @@ struct helper_data {
char *buf;
};
-/* Debugging aid, changed only from gdb */
-int helper_pause = 0;
-
-static void helper_hup(int sig)
-{
-}
-
static int helper_child(void *arg)
{
struct helper_data *data = arg;
char **argv = data->argv;
int errval;
- if (helper_pause){
- signal(SIGHUP, helper_hup);
- pause();
- }
if (data->pre_exec != NULL)
(*data->pre_exec)(data->pre_data);
errval = execvp_noalloc(data->buf, argv[0], argv);
-
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