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Message-Id: <1244980878-2124-15-git-send-email-vapier@gentoo.org>
Date: Sun, 14 Jun 2009 08:01:15 -0400
From: Mike Frysinger <vapier@...too.org>
To: linux-kernel@...r.kernel.org
Cc: uclinux-dist-devel@...ckfin.uclinux.org
Subject: [PATCH 14/17] Blackfin: convert irq/process to asm-generic
Signed-off-by: Mike Frysinger <vapier@...too.org>
---
arch/blackfin/include/asm/hardirq.h | 36 ++------------------------------
arch/blackfin/include/asm/irq.h | 5 +---
arch/blackfin/include/asm/processor.h | 35 ++-----------------------------
arch/blackfin/kernel/process.c | 23 +++++++++++++++++++++
4 files changed, 30 insertions(+), 69 deletions(-)
diff --git a/arch/blackfin/include/asm/hardirq.h b/arch/blackfin/include/asm/hardirq.h
index 717181a..5a64084 100644
--- a/arch/blackfin/include/asm/hardirq.h
+++ b/arch/blackfin/include/asm/hardirq.h
@@ -1,47 +1,17 @@
#ifndef __BFIN_HARDIRQ_H
#define __BFIN_HARDIRQ_H
-#include <linux/cache.h>
-#include <linux/threads.h>
-#include <asm/irq.h>
-
-typedef struct {
- unsigned int __softirq_pending;
- unsigned int __syscall_count;
- struct task_struct *__ksoftirqd_task;
-} ____cacheline_aligned irq_cpustat_t;
-
-#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
-
-/*
- * We put the hardirq and softirq counter into the preemption
- * counter. The bitmask has the following meaning:
- *
- * - bits 0-7 are the preemption count (max preemption depth: 256)
- * - bits 8-15 are the softirq count (max # of softirqs: 256)
- * - bits 16-23 are the hardirq count (max # of hardirqs: 256)
- *
- * - ( bit 26 is the PREEMPT_ACTIVE flag. )
- *
- * PREEMPT_MASK: 0x000000ff
- * HARDIRQ_MASK: 0x0000ff00
- * SOFTIRQ_MASK: 0x00ff0000
- */
-
#if NR_IRQS > 256
#define HARDIRQ_BITS 9
#else
#define HARDIRQ_BITS 8
#endif
-#ifdef NR_IRQS
-# if (1 << HARDIRQ_BITS) < NR_IRQS
-# error HARDIRQ_BITS is too low!
-# endif
-#endif
-
#define __ARCH_IRQ_EXIT_IRQS_DISABLED 1
extern void ack_bad_irq(unsigned int irq);
+#define ack_bad_irq ack_bad_irq
+
+#include <asm-generic/hardirq.h>
#endif
diff --git a/arch/blackfin/include/asm/irq.h b/arch/blackfin/include/asm/irq.h
index 400bdd5..9a7f63a 100644
--- a/arch/blackfin/include/asm/irq.h
+++ b/arch/blackfin/include/asm/irq.h
@@ -45,9 +45,6 @@
: "d" (bfin_irq_flags) \
)
-static inline int irq_canonicalize(int irq)
-{
- return irq;
-}
+#include <asm-generic/irq.h>
#endif /* _BFIN_IRQ_H_ */
diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h
index 3040415..d0be99b 100644
--- a/arch/blackfin/include/asm/processor.h
+++ b/arch/blackfin/include/asm/processor.h
@@ -7,9 +7,8 @@
*/
#define current_text_addr() ({ __label__ _l; _l: &&_l;})
+#include <asm/ptrace.h>
#include <asm/blackfin.h>
-#include <asm/segment.h>
-#include <linux/compiler.h>
static inline unsigned long rdusp(void)
{
@@ -59,36 +58,8 @@ struct thread_struct {
PS_S, 0, 0 \
}
-/*
- * Do necessary setup to start up a newly executed thread.
- *
- * pass the data segment into user programs if it exists,
- * it can't hurt anything as far as I can tell
- */
-#ifndef CONFIG_SMP
-#define start_thread(_regs, _pc, _usp) \
-do { \
- set_fs(USER_DS); \
- (_regs)->pc = (_pc); \
- if (current->mm) \
- (_regs)->p5 = current->mm->start_data; \
- task_thread_info(current)->l1_task_info.stack_start \
- = (void *)current->mm->context.stack_start; \
- task_thread_info(current)->l1_task_info.lowest_sp = (void *)(_usp); \
- memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info, \
- sizeof(*L1_SCRATCH_TASK_INFO)); \
- wrusp(_usp); \
-} while(0)
-#else
-#define start_thread(_regs, _pc, _usp) \
-do { \
- set_fs(USER_DS); \
- (_regs)->pc = (_pc); \
- if (current->mm) \
- (_regs)->p5 = current->mm->start_data; \
- wrusp(_usp); \
-} while (0)
-#endif
+extern void start_thread(struct pt_regs *regs, unsigned long new_ip,
+ unsigned long new_sp);
/* Forward declaration, a strange C thing */
struct task_struct;
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
index 30d0843..3e1d86e 100644
--- a/arch/blackfin/kernel/process.c
+++ b/arch/blackfin/kernel/process.c
@@ -160,6 +160,29 @@ pid_t kernel_thread(int (*fn) (void *), void *arg, unsigned long flags)
}
EXPORT_SYMBOL(kernel_thread);
+/*
+ * Do necessary setup to start up a newly executed thread.
+ *
+ * pass the data segment into user programs if it exists,
+ * it can't hurt anything as far as I can tell
+ */
+void start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
+{
+ set_fs(USER_DS);
+ regs->pc = new_ip;
+ if (current->mm)
+ regs->p5 = current->mm->start_data;
+#ifdef CONFIG_SMP
+ task_thread_info(current)->l1_task_info.stack_start =
+ (void *)current->mm->context.stack_start;
+ task_thread_info(current)->l1_task_info.lowest_sp = (void *)new_sp;
+ memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info,
+ sizeof(*L1_SCRATCH_TASK_INFO));
+#endif
+ wrusp(new_sp);
+}
+EXPORT_SYMBOL_GPL(start_thread);
+
void flush_thread(void)
{
}
--
1.6.3.1
--
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