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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 17:24:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 17:24:25 -0700
commitbab2d8c6020e1d7521cb6c4939f72b061ce947bc (patch)
tree6854225ef6027c933bfc7647c55d28c4ad930f20 /arch/openrisc/include
parent0e65ae099ca6a70a7a521e0358c57d43ec95dce5 (diff)
parentfa8d9d74c360726fe743b08af00ee3d0e0eb8bc1 (diff)
downloadlinux-bab2d8c6020e1d7521cb6c4939f72b061ce947bc.tar.gz
Merge tag 'for-3.4' of git://openrisc.net/jonas/linux
Pull OpenRISC changes for 3.4 from Jonas Bonn: "This series for the OpenRISC architecture consists of mostly trivial fixups. The most interesting bits of the series are: * A fix to the timer code whereby the shortest trigger period is set to 100 cycles; previously, it was possible to set this to 1 cycle, but by the time the register was written, that time had already passed and the timer interrupt would not go off until the cycle counter had gone a full cycle. * Allowing a device tree binary to be passed in to the kernel from u-boot. The OpenRISC architecture has been recently merged into upstream u-boot, so this change gets OpenRISC Linux into sync with that project." * tag 'for-3.4' of git://openrisc.net/jonas/linux: OpenRISC: Remove memory_start/end prototypes openrisc: remove semicolon from KSTK_ defs openrisc: sanitize use of orig_gpr11 openrisc: fix virt_addr_valid OpenRISC: Export dump_stack() OpenRISC: Select GENERIC_ATOMIC64 openrisc: Set shortest clock event to 100 ticks openrisc: included linux/thread_info.h twice OpenRISC: Use set_current_blocked() and block_sigmask() OpenRISC: Don't mask signals if we fail to setup signal stack OpenRISC: No need to reset handler if SA_ONESHOT OpenRISC: Don't reimplement force_sigsegv() openrisc: enable passing of flattened device tree pointer arch/openrisc/mm/init.c: trivial: use BUG_ON
Diffstat (limited to 'arch/openrisc/include')
-rw-r--r--arch/openrisc/include/asm/page.h6
-rw-r--r--arch/openrisc/include/asm/processor.h4
-rw-r--r--arch/openrisc/include/asm/ptrace.h6
-rw-r--r--arch/openrisc/include/asm/syscall.h7
-rw-r--r--arch/openrisc/include/asm/uaccess.h1
5 files changed, 10 insertions, 14 deletions
diff --git a/arch/openrisc/include/asm/page.h b/arch/openrisc/include/asm/page.h
index b041b344b22..108906f991d 100644
--- a/arch/openrisc/include/asm/page.h
+++ b/arch/openrisc/include/asm/page.h
@@ -71,9 +71,6 @@ typedef struct page *pgtable_t;
#define __pgd(x) ((pgd_t) { (x) })
#define __pgprot(x) ((pgprot_t) { (x) })
-extern unsigned long memory_start;
-extern unsigned long memory_end;
-
#endif /* !__ASSEMBLY__ */
@@ -94,8 +91,7 @@ extern unsigned long memory_end;
#define pfn_valid(pfn) ((pfn) < max_mapnr)
-#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
- ((void *)(kaddr) < (void *)memory_end))
+#define virt_addr_valid(kaddr) (pfn_valid(virt_to_pfn(kaddr)))
#endif /* __ASSEMBLY__ */
diff --git a/arch/openrisc/include/asm/processor.h b/arch/openrisc/include/asm/processor.h
index bb54c97b978..f7516fa78b5 100644
--- a/arch/openrisc/include/asm/processor.h
+++ b/arch/openrisc/include/asm/processor.h
@@ -81,8 +81,8 @@ extern inline void prepare_to_copy(struct task_struct *tsk)
#define INIT_THREAD { }
-#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc);
-#define KSTK_ESP(tsk) (task_pt_regs(tsk)->sp);
+#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
+#define KSTK_ESP(tsk) (task_pt_regs(tsk)->sp)
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
diff --git a/arch/openrisc/include/asm/ptrace.h b/arch/openrisc/include/asm/ptrace.h
index e612ce4512c..4651a737591 100644
--- a/arch/openrisc/include/asm/ptrace.h
+++ b/arch/openrisc/include/asm/ptrace.h
@@ -73,9 +73,13 @@ struct pt_regs {
};
};
long pc;
+ /* For restarting system calls:
+ * Set to syscall number for syscall exceptions,
+ * -1 for all other exceptions.
+ */
long orig_gpr11; /* For restarting system calls */
- long syscallno; /* Syscall number (used by strace) */
long dummy; /* Cheap alignment fix */
+ long dummy2; /* Cheap alignment fix */
};
/* TODO: Rename this to REDZONE because that's what it is */
diff --git a/arch/openrisc/include/asm/syscall.h b/arch/openrisc/include/asm/syscall.h
index 9f0337055d2..b752bb67891 100644
--- a/arch/openrisc/include/asm/syscall.h
+++ b/arch/openrisc/include/asm/syscall.h
@@ -25,7 +25,7 @@
static inline int
syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
{
- return regs->syscallno ? regs->syscallno : -1;
+ return regs->orig_gpr11;
}
static inline void
@@ -50,10 +50,7 @@ static inline void
syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
int error, long val)
{
- if (error)
- regs->gpr[11] = -error;
- else
- regs->gpr[11] = val;
+ regs->gpr[11] = (long) error ?: val;
}
static inline void
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
index c310e45b538..f5abaa0ffc3 100644
--- a/arch/openrisc/include/asm/uaccess.h
+++ b/arch/openrisc/include/asm/uaccess.h
@@ -26,7 +26,6 @@
#include <linux/thread_info.h>
#include <linux/prefetch.h>
#include <linux/string.h>
-#include <linux/thread_info.h>
#include <asm/page.h>
#define VERIFY_READ 0