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uml: throw out CHOOSE_MODE

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The next stage after removing code which depends on CONFIG_MODE_TT is removing
the CHOOSE_MODE abstraction, which provided both compile-time and run-time
branching to either tt-mode or skas-mode code.

This patch removes choose-mode.h and all inclusions of it, and replaces all
CHOOSE_MODE invocations with the skas branch.  This leaves a number of trivial
functions which will be dealt with in a later patch.

There are some changes in the uaccess and tls support which go somewhat beyond
this and eliminate some of the now-redundant functions.

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>
This commit is contained in:
Jeff Dike
2007-10-16 01:26:56 -07:00
committed by Linus Torvalds
parent 4c9e138513
commit 6aa802ce6a
36 changed files with 130 additions and 310 deletions
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19
arch/um/kernel/process.c
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@ -45,7 +45,6 @@
#include "os.h"
#include "mode.h"
#include "mode_kern.h"
#include "choose-mode.h"
/* This is a per-cpu array. A processor only modifies its entry and it only
* cares about its entry, so it's OK if another processor is modifying its
@ -55,7 +54,7 @@ struct cpu_task cpu_tasks[NR_CPUS] = { [0 ... NR_CPUS - 1] = { -1, NULL } };
static inline int external_pid(struct task_struct *task)
{
return CHOOSE_MODE_PROC(external_pid_tt, external_pid_skas, task);
return external_pid_skas(task);
}
int pid_to_processor_id(int pid)
@ -114,8 +113,8 @@ void *_switch_to(void *prev, void *next, void *last)
set_current(to);
do {
current->thread.saved_task = NULL ;
CHOOSE_MODE_PROC(switch_to_tt, switch_to_skas, prev, next);
current->thread.saved_task = NULL;
switch_to_skas(prev, next);
if(current->thread.saved_task)
show_regs(&(current->thread.regs));
next= current->thread.saved_task;
@ -136,7 +135,7 @@ void interrupt_end(void)
void release_thread(struct task_struct *task)
{
CHOOSE_MODE(release_thread_tt(task), release_thread_skas(task));
release_thread_skas(task);
}
void exit_thread(void)
@ -155,8 +154,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
int ret;
p->thread = (struct thread_struct) INIT_THREAD;
ret = CHOOSE_MODE_PROC(copy_thread_tt, copy_thread_skas, nr,
clone_flags, sp, stack_top, p, regs);
ret = copy_thread_skas(nr, clone_flags, sp, stack_top, p, regs);
if (ret || !current->thread.forking)
goto out;
@ -178,15 +176,12 @@ void initial_thread_cb(void (*proc)(void *), void *arg)
int save_kmalloc_ok = kmalloc_ok;
kmalloc_ok = 0;
CHOOSE_MODE_PROC(initial_thread_cb_tt, initial_thread_cb_skas, proc,
arg);
initial_thread_cb_skas(proc, arg);
kmalloc_ok = save_kmalloc_ok;
}
void default_idle(void)
{
CHOOSE_MODE(uml_idle_timer(), (void) 0);
while(1){
/* endless idle loop with no priority at all */
@ -203,7 +198,7 @@ void default_idle(void)
void cpu_idle(void)
{
CHOOSE_MODE(init_idle_tt(), init_idle_skas());
init_idle_skas();
}
void *um_virt_to_phys(struct task_struct *task, unsigned long addr,