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authorJeff Dike <jdike@addtoit.com>2007-10-16 04:26:50 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 12:43:05 -0400
commit42fda66387daa53538ae13a2c858396aaf037158 (patch)
tree77955a91a958fde7be47cb0ff23ac9e1248217db /arch/um/kernel/tt/exec_user.c
parenta1ff5878d2628bbe1e42821c024c96f48318f683 (diff)
uml: throw out CONFIG_MODE_TT
This patchset throws out tt mode, which has been non-functional for a while. This is done in phases, interspersed with code cleanups on the affected files. The removal is done as follows: remove all code, config options, and files which depend on CONFIG_MODE_TT get rid of the CHOOSE_MODE macro, which decided whether to call tt-mode or skas-mode code, and replace invocations with their skas portions replace all now-trivial procedures with their skas equivalents There are now a bunch of now-redundant pieces of data structures, including mode-specific pieces of the thread structure, pt_regs, and mm_context. These are all replaced with their skas-specific contents. As part of the ongoing style compliance project, I made a style pass over all files that were changed. There are three such patches, one for each phase, covering the files affected by that phase but no later ones. I noticed that we weren't freeing the LDT state associated with a process when it exited, so that's fixed in one of the later patches. The last patch is a tidying patch which I've had for a while, but which caused inexplicable crashes under tt mode. Since that is no longer a problem, this can now go in. This patch: Start getting rid of tt mode support. This patch throws out CONFIG_MODE_TT and all config options, code, and files which depend on it. CONFIG_MODE_SKAS is gone and everything that depends on it is included unconditionally. The few changed lines are in re-written Kconfig help, lines which needed something skas-related removed from them, and a few more which weren't strictly deletions. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/kernel/tt/exec_user.c')
-rw-r--r--arch/um/kernel/tt/exec_user.c56
1 files changed, 0 insertions, 56 deletions
diff --git a/arch/um/kernel/tt/exec_user.c b/arch/um/kernel/tt/exec_user.c
deleted file mode 100644
index 7b5f2181cf51..000000000000
--- a/arch/um/kernel/tt/exec_user.c
+++ /dev/null
@@ -1,56 +0,0 @@
1/*
2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#include <stdio.h>
7#include <unistd.h>
8#include <stdlib.h>
9#include <sched.h>
10#include <errno.h>
11#include <sys/wait.h>
12#include <signal.h>
13#include "kern_util.h"
14#include "user.h"
15#include "ptrace_user.h"
16#include "os.h"
17
18void do_exec(int old_pid, int new_pid)
19{
20 unsigned long regs[FRAME_SIZE];
21 int err;
22
23 if((ptrace(PTRACE_ATTACH, new_pid, 0, 0) < 0) ||
24 (ptrace(PTRACE_CONT, new_pid, 0, 0) < 0))
25 tracer_panic("do_exec failed to attach proc - errno = %d",
26 errno);
27
28 CATCH_EINTR(err = waitpid(new_pid, 0, WUNTRACED));
29 if (err < 0)
30 tracer_panic("do_exec failed to attach proc in waitpid - errno = %d",
31 errno);
32
33 if(ptrace_getregs(old_pid, regs) < 0)
34 tracer_panic("do_exec failed to get registers - errno = %d",
35 errno);
36
37 os_kill_ptraced_process(old_pid, 0);
38
39 if (ptrace(PTRACE_OLDSETOPTIONS, new_pid, 0, (void *)PTRACE_O_TRACESYSGOOD) < 0)
40 tracer_panic("do_exec: PTRACE_SETOPTIONS failed, errno = %d", errno);
41
42 if(ptrace_setregs(new_pid, regs) < 0)
43 tracer_panic("do_exec failed to start new proc - errno = %d",
44 errno);
45}
46
47/*
48 * Overrides for Emacs so that we follow Linus's tabbing style.
49 * Emacs will notice this stuff at the end of the file and automatically
50 * adjust the settings for this buffer only. This must remain at the end
51 * of the file.
52 * ---------------------------------------------------------------------------
53 * Local variables:
54 * c-file-style: "linux"
55 * End:
56 */