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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-20 18:05:28 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-20 18:05:28 -0800
commit54d46ea993744c5408e39ce0cb4851e13cbea716 (patch)
tree8e38fa92cc2ae72e0353c44e1e68be9bf5a7a058 /arch/xtensa
parentf59dc2bb5a50b26ea751f9eac1c81e4cc7de5257 (diff)
parent50ececcfa7d1acee085b2c518cad495062db6379 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull signal handling cleanups from Al Viro: "sigaltstack infrastructure + conversion for x86, alpha and um, COMPAT_SYSCALL_DEFINE infrastructure. Note that there are several conflicts between "unify SS_ONSTACK/SS_DISABLE definitions" and UAPI patches in mainline; resolution is trivial - just remove definitions of SS_ONSTACK and SS_DISABLED from arch/*/uapi/asm/signal.h; they are all identical and include/uapi/linux/signal.h contains the unified variant." Fixed up conflicts as per Al. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: alpha: switch to generic sigaltstack new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those generic compat_sys_sigaltstack() introduce generic sys_sigaltstack(), switch x86 and um to it new helper: compat_user_stack_pointer() new helper: restore_altstack() unify SS_ONSTACK/SS_DISABLE definitions new helper: current_user_stack_pointer() missing user_stack_pointer() instances Bury the conditionals from kernel_thread/kernel_execve series COMPAT_SYSCALL_DEFINE: infrastructure
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/Kconfig2
-rw-r--r--arch/xtensa/include/asm/ptrace.h2
-rw-r--r--arch/xtensa/include/asm/unistd.h1
-rw-r--r--arch/xtensa/include/uapi/asm/signal.h6
4 files changed, 2 insertions, 9 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 73d34e77c39..5aab1acabf1 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -13,8 +13,6 @@ config XTENSA
select GENERIC_CPU_DEVICES
select MODULES_USE_ELF_RELA
select GENERIC_PCI_IOMAP
- select GENERIC_KERNEL_THREAD
- select GENERIC_KERNEL_EXECVE
select ARCH_WANT_OPTIONAL_GPIOLIB
select CLONE_BACKWARDS
select IRQ_DOMAIN
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
index 58bf6fd3f91..682b1deac1f 100644
--- a/arch/xtensa/include/asm/ptrace.h
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -63,6 +63,8 @@ struct pt_regs {
# define profile_pc(regs) instruction_pointer(regs)
# endif
+#define user_stack_pointer(regs) ((regs)->areg[1])
+
#else /* __ASSEMBLY__ */
# include <asm/asm-offsets.h>
diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
index e002dbcc88b..eb63ea87815 100644
--- a/arch/xtensa/include/asm/unistd.h
+++ b/arch/xtensa/include/asm/unistd.h
@@ -1,7 +1,6 @@
#ifndef _XTENSA_UNISTD_H
#define _XTENSA_UNISTD_H
-#define __ARCH_WANT_SYS_EXECVE
#define __ARCH_WANT_SYS_CLONE
#include <uapi/asm/unistd.h>
diff --git a/arch/xtensa/include/uapi/asm/signal.h b/arch/xtensa/include/uapi/asm/signal.h
index b88ce96f2af..dacf716dd3e 100644
--- a/arch/xtensa/include/uapi/asm/signal.h
+++ b/arch/xtensa/include/uapi/asm/signal.h
@@ -97,12 +97,6 @@ typedef struct {
#define SA_RESTORER 0x04000000
-/*
- * sigaltstack controls
- */
-#define SS_ONSTACK 1
-#define SS_DISABLE 2
-
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192