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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-10 12:02:25 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-10 12:02:25 +0900
commit42859eea96ba6beabfb0369a1eeffa3c7d2bd9cb (patch)
treefa38aeda0d6e7a4c48a882b166b8643594a1ad50 /arch/arm/include/asm
parentf59b51fe3d3092c08d7d554ecb40db24011b2ebc (diff)
parentf322220d6159455da2b5a8a596d802c8695fed30 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull generic execve() changes from Al Viro: "This introduces the generic kernel_thread() and kernel_execve() functions, and switches x86, arm, alpha, um and s390 over to them." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (26 commits) s390: convert to generic kernel_execve() s390: switch to generic kernel_thread() s390: fold kernel_thread_helper() into ret_from_fork() s390: fold execve_tail() into start_thread(), convert to generic sys_execve() um: switch to generic kernel_thread() x86, um/x86: switch to generic sys_execve and kernel_execve x86: split ret_from_fork alpha: introduce ret_from_kernel_execve(), switch to generic kernel_execve() alpha: switch to generic kernel_thread() alpha: switch to generic sys_execve() arm: get rid of execve wrapper, switch to generic execve() implementation arm: optimized current_pt_regs() arm: introduce ret_from_kernel_execve(), switch to generic kernel_execve() arm: split ret_from_fork, simplify kernel_thread() [based on patch by rmk] generic sys_execve() generic kernel_execve() new helper: current_pt_regs() preparation for generic kernel_thread() um: kill thread->forking um: let signal_delivered() do SIGTRAP on singlestepping into handler ...
Diffstat (limited to 'arch/arm/include/asm')
-rw-r--r--arch/arm/include/asm/processor.h5
-rw-r--r--arch/arm/include/asm/ptrace.h5
-rw-r--r--arch/arm/include/asm/system.h1
-rw-r--r--arch/arm/include/asm/unistd.h2
4 files changed, 7 insertions, 6 deletions
diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
index 99afa7498260..06e7d509eaac 100644
--- a/arch/arm/include/asm/processor.h
+++ b/arch/arm/include/asm/processor.h
@@ -85,11 +85,6 @@ unsigned long get_wchan(struct task_struct *p);
#define cpu_relax() barrier()
#endif
-/*
- * Create a new kernel thread
- */
-extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
-
#define task_pt_regs(p) \
((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
index 355ece523f41..44fe998269d9 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -254,6 +254,11 @@ static inline unsigned long user_stack_pointer(struct pt_regs *regs)
return regs->ARM_sp;
}
+#define current_pt_regs(void) ({ \
+ register unsigned long sp asm ("sp"); \
+ (struct pt_regs *)((sp | (THREAD_SIZE - 1)) - 7) - 1; \
+})
+
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 74542c52f9be..368165e33c1c 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -2,7 +2,6 @@
#include <asm/barrier.h>
#include <asm/compiler.h>
#include <asm/cmpxchg.h>
-#include <asm/exec.h>
#include <asm/switch_to.h>
#include <asm/system_info.h>
#include <asm/system_misc.h>
diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h
index d9ff5cc3a506..f259921edfe9 100644
--- a/arch/arm/include/asm/unistd.h
+++ b/arch/arm/include/asm/unistd.h
@@ -478,6 +478,8 @@
#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_SYS_SOCKETCALL
#endif
+#define __ARCH_WANT_SYS_EXECVE
+#define __ARCH_WANT_KERNEL_EXECVE
/*
* "Conditional" syscalls