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um: kill thread->forking

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we only use that to tell copy_thread() done by syscall from that
done by kernel_thread().  However, it's easier to do simply by
checking PF_KTHREAD in thread flags.

Merge sys_clone() guts for 32bit and 64bit, while we are at it...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-09-20 09:28:25 -04:00
committed by Richard Weinberger
parent f9a38eace4
commit d2ce4e92fa
7 changed files with 29 additions and 66 deletions
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9
arch/um/include/asm/processor-generic.h
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@@ -20,14 +20,6 @@ struct mm_struct;
struct thread_struct {
struct task_struct *saved_task;
/*
* This flag is set to 1 before calling do_fork (and analyzed in
* copy_thread) to mark that we are begin called from userspace (fork /
* vfork / clone), and reset to 0 after. It is left to 0 when called
* from kernelspace (i.e. kernel_thread() or fork_idle(),
* as of 2.6.11).
*/
int forking;
struct pt_regs regs;
int singlestep_syscall;
void *fault_addr;
@@ -58,7 +50,6 @@ struct thread_struct {
#define INIT_THREAD \
{ \
.forking = 0, \
.regs = EMPTY_REGS, \
.fault_addr = NULL, \
.prev_sched = NULL, \