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authorJeff Dike <jdike@addtoit.com>2007-10-16 01:26:50 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:05 -0700
commit42fda66387daa53538ae13a2c858396aaf037158 (patch)
tree77955a91a958fde7be47cb0ff23ac9e1248217db /include/asm-um
parenta1ff5878d2628bbe1e42821c024c96f48318f683 (diff)
downloadlinux-stericsson-42fda66387daa53538ae13a2c858396aaf037158.tar.gz
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 'include/asm-um')
-rw-r--r--include/asm-um/mmu_context.h6
-rw-r--r--include/asm-um/processor-generic.h14
2 files changed, 0 insertions, 20 deletions
diff --git a/include/asm-um/mmu_context.h b/include/asm-um/mmu_context.h
index 9aa4b44e8cc1..92b0a703fb9e 100644
--- a/include/asm-um/mmu_context.h
+++ b/include/asm-um/mmu_context.h
@@ -56,12 +56,6 @@ static inline void enter_lazy_tlb(struct mm_struct *mm,
extern int init_new_context_skas(struct task_struct *task,
struct mm_struct *mm);
-static inline int init_new_context_tt(struct task_struct *task,
- struct mm_struct *mm)
-{
- return(0);
-}
-
static inline int init_new_context(struct task_struct *task,
struct mm_struct *mm)
{
diff --git a/include/asm-um/processor-generic.h b/include/asm-um/processor-generic.h
index d99bbddffdb9..70c8183d1db0 100644
--- a/include/asm-um/processor-generic.h
+++ b/include/asm-um/processor-generic.h
@@ -34,20 +34,10 @@ struct thread_struct {
void *exec_buf;
struct arch_thread arch;
union {
-#ifdef CONFIG_MODE_TT
- struct {
- int extern_pid;
- int tracing;
- int switch_pipe[2];
- int vm_seq;
- } tt;
-#endif
-#ifdef CONFIG_MODE_SKAS
struct {
jmp_buf switch_buf;
int mm_count;
} skas;
-#endif
} mode;
struct {
int op;
@@ -136,12 +126,8 @@ extern struct cpuinfo_um cpu_data[];
#endif
-#ifdef CONFIG_MODE_SKAS
#define KSTK_REG(tsk, reg) \
get_thread_reg(reg, &tsk->thread.mode.skas.switch_buf)
-#else
-#define KSTK_REG(tsk, reg) (0xbadbabe)
-#endif
#define get_wchan(p) (0)
#endif