Blackfin arch: remove hardware PM code, oprofile not use it

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

arch/blackfin/Kconfig

@@ -1007,12 +1007,6 @@ config EBIU_FCTLVAL
 	hex "Flash Memory Bank Control Register"
 	depends on BF54x
 	default 6
-
-config HARDWARE_PM
-	bool "OProfile use hardware porformance monitor"
-	depends on OPROFILE=y
-	default n
-
 endmenu
 
 #############################################################################

arch/blackfin/mach-common/interrupt.S

@@ -165,16 +165,6 @@ ENTRY(_evt_ivhw)
 	r0 = [p2];
 	[sp + PT_IPEND] = r0;
 
-#ifdef CONFIG_HARDWARE_PM
-	r7 = [sp + PT_SEQSTAT];
-	r7 = r7 >>> 0xe;
-	r6 = 0x1F;
-	r7 = r7 & r6;
-	r5 = 0x12;
-	cc = r7 == r5;
-	if cc jump .Lcall_do_ovf; /* deal with performance counter overflow */
-#endif
-
 	/* set the EXCAUSE to HWERR for trap_c */
 	r0 = [sp + PT_SEQSTAT];
 	R1.L = LO(VEC_HWERR);
@@ -200,18 +190,6 @@ ENTRY(_evt_ivhw)
 .Lcommon_restore_all_sys:
 	RESTORE_ALL_SYS
 	rti;
-
-#ifdef CONFIG_HARDWARE_PM
-.Lcall_do_ovf:
-
-	R0 = SP;
-	SP += -12;
-	call _pm_overflow;
-	SP += 12;
-
-	jump .Lcommon_restore_all_sys;
-#endif
-
 ENDPROC(_evt_ivhw)
 
 /* Interrupt routine for evt2 (NMI).

arch/blackfin/mach-common/irqpanic.c

@@ -33,8 +33,6 @@
 #include <asm/traps.h>
 #include <asm/blackfin.h>
 
-#include "../oprofile/op_blackfin.h"
-
 #ifdef CONFIG_DEBUG_ICACHE_CHECK
 #define L1_ICACHE_START 0xffa10000
 #define L1_ICACHE_END   0xffa13fff
@@ -134,13 +132,3 @@ asmlinkage void irq_panic(int reason, struct pt_regs *regs)
 #endif
 
 }
-
-#ifdef CONFIG_HARDWARE_PM
-/*
- * call the handler of Performance overflow
- */
-asmlinkage void pm_overflow(struct pt_regs *regs)
-{
-	pm_overflow_handler(regs);
-}
-#endif

arch/blackfin/oprofile/Makefile

@@ -11,4 +11,3 @@ DRIVER_OBJS := $(addprefix ../../../drivers/oprofile/, \
 		timer_int.o )
 
 oprofile-y := $(DRIVER_OBJS) common.o
-oprofile-$(CONFIG_HARDWARE_PM) += op_model_bf533.o

arch/blackfin/oprofile/common.c

@@ -30,129 +30,10 @@
 
 #include <linux/oprofile.h>
 #include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/mutex.h>
-#include <linux/ptrace.h>
-#include <linux/irq.h>
-#include <linux/io.h>
 
-#include <asm/system.h>
-#include <asm/blackfin.h>
-
-#include "op_blackfin.h"
-
-#define BFIN_533_ID  0xE5040003
-#define BFIN_537_ID  0xE5040002
-
-static int pfmon_enabled;
-static struct mutex pfmon_lock;
-
-struct op_bfin533_model *model;
-
-struct op_counter_config ctr[OP_MAX_COUNTER];
-
-static int op_bfin_setup(void)
-{
-	int ret;
-
-	/* Pre-compute the values to stuff in the hardware registers.  */
-	spin_lock(&oprofilefs_lock);
-	ret = model->reg_setup(ctr);
-	spin_unlock(&oprofilefs_lock);
-
-	return ret;
-}
-
-static void op_bfin_shutdown(void)
-{
-#if 0
-	/* what is the difference between shutdown and stop? */
-#endif
-}
-
-static int op_bfin_start(void)
-{
-	int ret = -EBUSY;
-
-	printk(KERN_INFO "KSDBG:in %s\n", __func__);
-	mutex_lock(&pfmon_lock);
-	if (!pfmon_enabled) {
-		ret = model->start(ctr);
-		pfmon_enabled = !ret;
-	}
-	mutex_unlock(&pfmon_lock);
-
-	return ret;
-}
-
-static void op_bfin_stop(void)
-{
-	mutex_lock(&pfmon_lock);
-	if (pfmon_enabled) {
-		model->stop();
-		pfmon_enabled = 0;
-	}
-	mutex_unlock(&pfmon_lock);
-}
-
-static int op_bfin_create_files(struct super_block *sb, struct dentry *root)
-{
-	int i;
-
-	for (i = 0; i < model->num_counters; ++i) {
-		struct dentry *dir;
-		char buf[3];
-		printk(KERN_INFO "Oprofile: creating files... \n");
-
-		snprintf(buf, sizeof buf, "%d", i);
-		dir = oprofilefs_mkdir(sb, root, buf);
-
-		oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled);
-		oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event);
-		oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count);
-		/*
-		 * We dont support per counter user/kernel selection, but
-		 * we leave the entries because userspace expects them
-		 */
-		oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel);
-		oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user);
-		oprofilefs_create_ulong(sb, dir, "unit_mask",
-					&ctr[i].unit_mask);
-	}
-
-	return 0;
-}
 int __init oprofile_arch_init(struct oprofile_operations *ops)
 {
-#ifdef CONFIG_HARDWARE_PM
-	mutex_init(&pfmon_lock);
-
-
-	switch (bfin_read_CHIPID() & CHIPID_MANUFACTURE) {
-	case 0xca:
-		printk(KERN_INFO "Oprofile: cpu vendor is Analog Devices.\n");
-		model = &op_model_bfin533;
-		model->num_counters = 2;
-		break;
-	default:
-		return -ENODEV;
-	}
-
-	ops->cpu_type = model->name;
-	ops->create_files = op_bfin_create_files;
-	ops->setup = op_bfin_setup;
-	ops->shutdown = op_bfin_shutdown;
-	ops->start = op_bfin_start;
-	ops->stop = op_bfin_stop;
-
-	printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
-	       ops->cpu_type);
-
-	return 0;
-#else
 	return -1;
-#endif
 }
 
 void oprofile_arch_exit(void)