diff options
author | Jeff Dike <jdike@addtoit.com> | 2007-10-16 04:26:50 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 12:43:05 -0400 |
commit | 42fda66387daa53538ae13a2c858396aaf037158 (patch) | |
tree | 77955a91a958fde7be47cb0ff23ac9e1248217db /arch/um/kernel/tt/exec_user.c | |
parent | a1ff5878d2628bbe1e42821c024c96f48318f683 (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.c | 56 |
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 | |||
18 | void 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 | */ | ||