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-rw-r--r--arch/hexagon/kernel/Makefile2
-rw-r--r--arch/hexagon/kernel/dma.c2
-rw-r--r--arch/hexagon/kernel/init_task.c54
-rw-r--r--arch/hexagon/kernel/process.c37
-rw-r--r--arch/hexagon/kernel/signal.c54
-rw-r--r--arch/hexagon/kernel/smp.c11
-rw-r--r--arch/hexagon/kernel/time.c6
7 files changed, 18 insertions, 148 deletions
diff --git a/arch/hexagon/kernel/Makefile b/arch/hexagon/kernel/Makefile
index 3689f3754d0..536aec093e6 100644
--- a/arch/hexagon/kernel/Makefile
+++ b/arch/hexagon/kernel/Makefile
@@ -1,4 +1,4 @@
-extra-y := head.o vmlinux.lds init_task.o
+extra-y := head.o vmlinux.lds
obj-$(CONFIG_SMP) += smp.o topology.o
diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c
index 0f2367cc549..2b48751aa5f 100644
--- a/arch/hexagon/kernel/dma.c
+++ b/arch/hexagon/kernel/dma.c
@@ -54,7 +54,7 @@ static struct gen_pool *coherent_pool;
/* Allocates from a pool of uncached memory that was reserved at boot time */
-void *hexagon_dma_alloc_coherent(struct device *dev, size_t size,
+static void *hexagon_dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
struct dma_attrs *attrs)
{
diff --git a/arch/hexagon/kernel/init_task.c b/arch/hexagon/kernel/init_task.c
deleted file mode 100644
index 73283d3edf0..00000000000
--- a/arch/hexagon/kernel/init_task.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Init task definition
- *
- * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init_task.h>
-#include <linux/fs.h>
-#include <linux/mqueue.h>
-#include <asm/thread_info.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-
-/*
- * Initial thread structure.
- *
- * We need to make sure that this is 8192-byte aligned due to the
- * way process stacks are handled. This is done by making sure
- * the linker maps this in the .text segment right after head.S,
- * and making head.S ensure the proper alignment.
- */
-union thread_union init_thread_union
- __attribute__((__section__(".data.init_task"),
- __aligned__(THREAD_SIZE))) = {
- INIT_THREAD_INFO(init_task)
- };
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index ff02821bfb7..af51de63b83 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -234,43 +234,6 @@ unsigned long get_wchan(struct task_struct *p)
}
/*
- * Borrowed from PowerPC -- basically allow smaller kernel stacks if we
- * go crazy with the page sizes.
- */
-#if THREAD_SHIFT < PAGE_SHIFT
-
-static struct kmem_cache *thread_info_cache;
-
-struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node)
-{
- struct thread_info *ti;
-
- ti = kmem_cache_alloc_node(thread_info_cache, GFP_KERNEL, node);
- if (unlikely(ti == NULL))
- return NULL;
-#ifdef CONFIG_DEBUG_STACK_USAGE
- memset(ti, 0, THREAD_SIZE);
-#endif
- return ti;
-}
-
-void free_thread_info(struct thread_info *ti)
-{
- kmem_cache_free(thread_info_cache, ti);
-}
-
-/* Weak symbol; called by init/main.c */
-
-void thread_info_cache_init(void)
-{
- thread_info_cache = kmem_cache_create("thread_info", THREAD_SIZE,
- THREAD_SIZE, 0, NULL);
- BUG_ON(thread_info_cache == NULL);
-}
-
-#endif /* THREAD_SHIFT < PAGE_SHIFT */
-
-/*
* Required placeholder.
*/
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c
index ecbab345760..304b0808d07 100644
--- a/arch/hexagon/kernel/signal.c
+++ b/arch/hexagon/kernel/signal.c
@@ -31,8 +31,6 @@
#include <asm/signal.h>
#include <asm/vdso.h>
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
struct rt_sigframe {
unsigned long tramp[2];
struct siginfo info;
@@ -149,11 +147,9 @@ sigsegv:
/*
* Setup invocation of signal handler
*/
-static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
- sigset_t *oldset, struct pt_regs *regs)
+static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
+ struct pt_regs *regs)
{
- int rc;
-
/*
* If we're handling a signal that aborted a system call,
* set up the error return value before adding the signal
@@ -186,15 +182,12 @@ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka,
* Set up the stack frame; not doing the SA_SIGINFO thing. We
* only set up the rt_frame flavor.
*/
- rc = setup_rt_frame(sig, ka, info, oldset, regs);
-
/* If there was an error on setup, no signal was delivered. */
- if (rc)
- return rc;
-
- block_sigmask(ka, sig);
+ if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0)
+ return;
- return 0;
+ signal_delivered(sig, info, ka, regs,
+ test_thread_flag(TIF_SINGLESTEP));
}
/*
@@ -209,34 +202,13 @@ static void do_signal(struct pt_regs *regs)
if (!user_mode(regs))
return;
- if (try_to_freeze())
- goto no_signal;
-
signo = get_signal_to_deliver(&info, &sigact, regs, NULL);
if (signo > 0) {
- sigset_t *oldset;
-
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- oldset = &current->saved_sigmask;
- else
- oldset = &current->blocked;
-
- if (handle_signal(signo, &info, &sigact, oldset, regs) == 0) {
- /*
- * Successful delivery case. The saved sigmask is
- * stored in the signal frame, and will be restored
- * by sigreturn. We can clear the TIF flag.
- */
- clear_thread_flag(TIF_RESTORE_SIGMASK);
-
- tracehook_signal_handler(signo, &info, &sigact, regs,
- test_thread_flag(TIF_SINGLESTEP));
- }
+ handle_signal(signo, &info, &sigact, regs);
return;
}
-no_signal:
/*
* If we came from a system call, handle the restart.
*/
@@ -259,10 +231,7 @@ no_signal:
no_restart:
/* If there's no signal to deliver, put the saved sigmask back */
- if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
- clear_thread_flag(TIF_RESTORE_SIGMASK);
- sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
- }
+ restore_saved_sigmask();
}
void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
@@ -272,8 +241,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
clear_thread_flag(TIF_NOTIFY_RESUME);
- if (current->replacement_session_keyring)
- key_replace_session_keyring();
+ tracehook_notify_resume(regs);
}
}
@@ -293,13 +261,15 @@ asmlinkage int sys_rt_sigreturn(void)
struct rt_sigframe __user *frame;
sigset_t blocked;
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
frame = (struct rt_sigframe __user *)pt_psp(regs);
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&blocked, &frame->uc.uc_sigmask, sizeof(blocked)))
goto badframe;
- sigdelsetmask(&blocked, ~_BLOCKABLE);
set_current_blocked(&blocked);
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index 1298141874a..f7264621e58 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -196,18 +196,11 @@ void __cpuinit start_secondary(void)
* maintains control until "cpu_online(cpu)" is set.
*/
-int __cpuinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
{
- struct task_struct *idle;
- struct thread_info *thread;
+ struct thread_info *thread = (struct thread_info *)idle->stack;
void *stack_start;
- /* Create new init task for the CPU */
- idle = fork_idle(cpu);
- if (IS_ERR(idle))
- panic(KERN_ERR "fork_idle failed\n");
-
- thread = (struct thread_info *)idle->stack;
thread->cpu = cpu;
/* Boot to the head. */
diff --git a/arch/hexagon/kernel/time.c b/arch/hexagon/kernel/time.c
index 5d9b33b6793..36ba6418571 100644
--- a/arch/hexagon/kernel/time.c
+++ b/arch/hexagon/kernel/time.c
@@ -201,12 +201,10 @@ void __init time_init_deferred(void)
resource = rtos_timer_device.resource;
/* ioremap here means this has to run later, after paging init */
- rtos_timer = ioremap(resource->start, resource->end
- - resource->start + 1);
+ rtos_timer = ioremap(resource->start, resource_size(resource));
if (!rtos_timer) {
- release_mem_region(resource->start, resource->end
- - resource->start + 1);
+ release_mem_region(resource->start, resource_size(resource));
}
clocksource_register_khz(&hexagon_clocksource, pcycle_freq_mhz * 1000);