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-rw-r--r--arch/microblaze/Kconfig1
-rw-r--r--arch/microblaze/include/asm/Kbuild1
-rw-r--r--arch/microblaze/include/asm/delay.h28
-rw-r--r--arch/microblaze/include/asm/processor.h1
-rw-r--r--arch/microblaze/include/asm/scatterlist.h1
-rw-r--r--arch/microblaze/include/uapi/asm/unistd.h1
-rw-r--r--arch/microblaze/kernel/ftrace.c3
-rw-r--r--arch/microblaze/kernel/mcount.S5
-rw-r--r--arch/microblaze/kernel/signal.c55
-rw-r--r--arch/microblaze/kernel/syscall_table.S3
-rw-r--r--arch/microblaze/lib/Makefile14
11 files changed, 52 insertions, 61 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 9ae0854..40e1c1d 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -22,7 +22,6 @@ config MICROBLAZE
select HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_GRAPH_TRACER
- select HAVE_FUNCTION_TRACE_MCOUNT_TEST
select HAVE_FUNCTION_TRACER
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
diff --git a/arch/microblaze/include/asm/Kbuild b/arch/microblaze/include/asm/Kbuild
index 35b3ecaf..27a3acd 100644
--- a/arch/microblaze/include/asm/Kbuild
+++ b/arch/microblaze/include/asm/Kbuild
@@ -7,5 +7,6 @@ generic-y += exec.h
generic-y += hash.h
generic-y += mcs_spinlock.h
generic-y += preempt.h
+generic-y += scatterlist.h
generic-y += syscalls.h
generic-y += trace_clock.h
diff --git a/arch/microblaze/include/asm/delay.h b/arch/microblaze/include/asm/delay.h
index 66fc24c..60cb39d 100644
--- a/arch/microblaze/include/asm/delay.h
+++ b/arch/microblaze/include/asm/delay.h
@@ -61,13 +61,29 @@ extern inline void __udelay(unsigned int x)
extern void __bad_udelay(void); /* deliberately undefined */
extern void __bad_ndelay(void); /* deliberately undefined */
-#define udelay(n) (__builtin_constant_p(n) ? \
- ((n) > __MAX_UDELAY ? __bad_udelay() : __udelay((n) * (19 * HZ))) : \
- __udelay((n) * (19 * HZ)))
+#define udelay(n) \
+ ({ \
+ if (__builtin_constant_p(n)) { \
+ if ((n) / __MAX_UDELAY >= 1) \
+ __bad_udelay(); \
+ else \
+ __udelay((n) * (19 * HZ)); \
+ } else { \
+ __udelay((n) * (19 * HZ)); \
+ } \
+ })
-#define ndelay(n) (__builtin_constant_p(n) ? \
- ((n) > __MAX_NDELAY ? __bad_ndelay() : __udelay((n) * HZ)) : \
- __udelay((n) * HZ))
+#define ndelay(n) \
+ ({ \
+ if (__builtin_constant_p(n)) { \
+ if ((n) / __MAX_NDELAY >= 1) \
+ __bad_ndelay(); \
+ else \
+ __udelay((n) * HZ); \
+ } else { \
+ __udelay((n) * HZ); \
+ } \
+ })
#define muldiv(a, b, c) (((a)*(b))/(c))
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index 9d31b05..497a988 100644
--- a/arch/microblaze/include/asm/processor.h
+++ b/arch/microblaze/include/asm/processor.h
@@ -22,6 +22,7 @@
extern const struct seq_operations cpuinfo_op;
# define cpu_relax() barrier()
+# define cpu_relax_lowlatency() cpu_relax()
#define task_pt_regs(tsk) \
(((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
diff --git a/arch/microblaze/include/asm/scatterlist.h b/arch/microblaze/include/asm/scatterlist.h
deleted file mode 100644
index 35d786f..0000000
--- a/arch/microblaze/include/asm/scatterlist.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-generic/scatterlist.h>
diff --git a/arch/microblaze/include/uapi/asm/unistd.h b/arch/microblaze/include/uapi/asm/unistd.h
index 8d0791b..4e1ddc9 100644
--- a/arch/microblaze/include/uapi/asm/unistd.h
+++ b/arch/microblaze/include/uapi/asm/unistd.h
@@ -398,5 +398,6 @@
#define __NR_finit_module 380
#define __NR_sched_setattr 381
#define __NR_sched_getattr 382
+#define __NR_renameat2 383
#endif /* _UAPI_ASM_MICROBLAZE_UNISTD_H */
diff --git a/arch/microblaze/kernel/ftrace.c b/arch/microblaze/kernel/ftrace.c
index bbcd253..fc7b48a 100644
--- a/arch/microblaze/kernel/ftrace.c
+++ b/arch/microblaze/kernel/ftrace.c
@@ -27,6 +27,9 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
unsigned long return_hooker = (unsigned long)
&return_to_handler;
+ if (unlikely(ftrace_graph_is_dead()))
+ return;
+
if (unlikely(atomic_read(&current->tracing_graph_pause)))
return;
diff --git a/arch/microblaze/kernel/mcount.S b/arch/microblaze/kernel/mcount.S
index fc1e132..fed9da5 100644
--- a/arch/microblaze/kernel/mcount.S
+++ b/arch/microblaze/kernel/mcount.S
@@ -91,11 +91,6 @@ ENTRY(ftrace_caller)
#endif /* CONFIG_DYNAMIC_FTRACE */
SAVE_REGS
swi r15, r1, 0;
- /* MS: HAVE_FUNCTION_TRACE_MCOUNT_TEST begin of checking */
- lwi r5, r0, function_trace_stop;
- bneid r5, end;
- nop;
- /* MS: HAVE_FUNCTION_TRACE_MCOUNT_TEST end of checking */
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
#ifndef CONFIG_DYNAMIC_FTRACE
lwi r5, r0, ftrace_graph_return;
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 49a07a4..8955a38 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -145,22 +145,19 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
* Determine which stack to use..
*/
static inline void __user *
-get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
+get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size)
{
/* Default to using normal stack */
- unsigned long sp = regs->r1;
-
- if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && !on_sig_stack(sp))
- sp = current->sas_ss_sp + current->sas_ss_size;
+ unsigned long sp = sigsp(regs->r1, ksig);
return (void __user *)((sp - frame_size) & -8UL);
}
-static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs *regs)
+static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
+ struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
- int err = 0;
+ int err = 0, sig = ksig->sig;
int signal;
unsigned long address = 0;
#ifdef CONFIG_MMU
@@ -168,10 +165,10 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
pte_t *ptep;
#endif
- frame = get_sigframe(ka, regs, sizeof(*frame));
+ frame = get_sigframe(ksig, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
signal = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
@@ -179,8 +176,8 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
? current_thread_info()->exec_domain->signal_invmap[sig]
: sig;
- if (info)
- err |= copy_siginfo_to_user(&frame->info, info);
+ if (ksig->ka.sa.sa_flags & SA_SIGINFO)
+ err |= copy_siginfo_to_user(&frame->info, &ksig->info);
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
@@ -227,7 +224,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
flush_dcache_range(address, address + 8);
#endif
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
regs->r1 = (unsigned long) frame;
@@ -237,7 +234,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->r6 = (unsigned long) &frame->info; /* arg 1: siginfo */
regs->r7 = (unsigned long) &frame->uc; /* arg2: ucontext */
/* Offset to handle microblaze rtid r14, 0 */
- regs->pc = (unsigned long)ka->sa.sa_handler;
+ regs->pc = (unsigned long)ksig->ka.sa.sa_handler;
set_fs(USER_DS);
@@ -247,10 +244,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
#endif
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
/* Handle restarting system calls */
@@ -283,23 +276,15 @@ do_restart:
*/
static void
-handle_signal(unsigned long sig, struct k_sigaction *ka,
- siginfo_t *info, struct pt_regs *regs)
+handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Set up the stack frame */
- if (ka->sa.sa_flags & SA_SIGINFO)
- ret = setup_rt_frame(sig, ka, info, oldset, regs);
- else
- ret = setup_rt_frame(sig, ka, NULL, oldset, regs);
+ ret = setup_rt_frame(ksig, oldset, regs);
- if (ret)
- return;
-
- signal_delivered(sig, info, ka, regs,
- test_thread_flag(TIF_SINGLESTEP));
+ signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
}
/*
@@ -313,21 +298,19 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
*/
static void do_signal(struct pt_regs *regs, int in_syscall)
{
- siginfo_t info;
- int signr;
- struct k_sigaction ka;
+ struct ksignal ksig;
+
#ifdef DEBUG_SIG
pr_info("do signal: %p %d\n", regs, in_syscall);
pr_info("do signal2: %lx %lx %ld [%lx]\n", regs->pc, regs->r1,
regs->r12, current_thread_info()->flags);
#endif
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
- if (signr > 0) {
+ if (get_signal(&ksig)) {
/* Whee! Actually deliver the signal. */
if (in_syscall)
- handle_restart(regs, &ka, 1);
- handle_signal(signr, &ka, &info, regs);
+ handle_restart(regs, &ksig.ka, 1);
+ handle_signal(&ksig, regs);
return;
}
diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
index 329dfba..1a23d5d 100644
--- a/arch/microblaze/kernel/syscall_table.S
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -380,6 +380,7 @@ ENTRY(sys_call_table)
.long sys_process_vm_readv
.long sys_process_vm_writev
.long sys_kcmp
- .long sys_finit_module
+ .long sys_finit_module /* 380 */
.long sys_sched_setattr
.long sys_sched_getattr
+ .long sys_renameat2
diff --git a/arch/microblaze/lib/Makefile b/arch/microblaze/lib/Makefile
index 844960e..70c7ae6 100644
--- a/arch/microblaze/lib/Makefile
+++ b/arch/microblaze/lib/Makefile
@@ -18,14 +18,6 @@ endif
lib-y += uaccess_old.o
-lib-y += ashldi3.o
-lib-y += ashrdi3.o
-lib-y += cmpdi2.o
-lib-y += divsi3.o
-lib-y += lshrdi3.o
-lib-y += modsi3.o
-lib-y += muldi3.o
-lib-y += mulsi3.o
-lib-y += ucmpdi2.o
-lib-y += udivsi3.o
-lib-y += umodsi3.o
+# libgcc-style stuff needed in the kernel
+obj-y += ashldi3.o ashrdi3.o cmpdi2.o divsi3.o lshrdi3.o modsi3.o
+obj-y += muldi3.o mulsi3.o ucmpdi2.o udivsi3.o umodsi3.o
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