arch: mips: Remove CONFIG_OPROFILE support

The "oprofile" user-space tools don't use the kernel OPROFILE support
any more, and haven't in a long time. User-space has been converted to
the perf interfaces.

Remove the old oprofile's architecture specific support.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Robert Richter <rric@kernel.org>
Acked-by: William Cohen <wcohen@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 479 deletions

diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
deleted file mode 100644
index 55d7b7fd18b6..000000000000
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ /dev/null
@@ -1,479 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004, 05, 06 by Ralf Baechle
- * Copyright (C) 2005 by MIPS Technologies, Inc.
- */
-#include <linux/cpumask.h>
-#include <linux/oprofile.h>
-#include <linux/interrupt.h>
-#include <linux/smp.h>
-#include <asm/irq_regs.h>
-#include <asm/time.h>
-
-#include "op_impl.h"
-
-#define M_PERFCTL_EVENT(event)		(((event) << MIPS_PERFCTRL_EVENT_S) & \
-					 MIPS_PERFCTRL_EVENT)
-#define M_PERFCTL_VPEID(vpe)		((vpe)	  << MIPS_PERFCTRL_VPEID_S)
-
-#define M_COUNTER_OVERFLOW		(1UL	  << 31)
-
-static int (*save_perf_irq)(void);
-static int perfcount_irq;
-
-/*
- * XLR has only one set of counters per core. Designate the
- * first hardware thread in the core for setup and init.
- * Skip CPUs with non-zero hardware thread id (4 hwt per core)
- */
-#if defined(CONFIG_CPU_XLR) && defined(CONFIG_SMP)
-#define oprofile_skip_cpu(c)	((cpu_logical_map(c) & 0x3) != 0)
-#else
-#define oprofile_skip_cpu(c)	0
-#endif
-
-#ifdef CONFIG_MIPS_MT_SMP
-#define WHAT		(MIPS_PERFCTRL_MT_EN_VPE | \
-			 M_PERFCTL_VPEID(cpu_vpe_id(&current_cpu_data)))
-#define vpe_id()	(cpu_has_mipsmt_pertccounters ? \
-			0 : cpu_vpe_id(&current_cpu_data))
-
-/*
- * The number of bits to shift to convert between counters per core and
- * counters per VPE.  There is no reasonable interface atm to obtain the
- * number of VPEs used by Linux and in the 34K this number is fixed to two
- * anyways so we hardcore a few things here for the moment.  The way it's
- * done here will ensure that oprofile VSMP kernel will run right on a lesser
- * core like a 24K also or with maxcpus=1.
- */
-static inline unsigned int vpe_shift(void)
-{
-	if (num_possible_cpus() > 1)
-		return 1;
-
-	return 0;
-}
-
-#else
-
-#define WHAT		0
-#define vpe_id()	0
-
-static inline unsigned int vpe_shift(void)
-{
-	return 0;
-}
-
-#endif
-
-static inline unsigned int counters_total_to_per_cpu(unsigned int counters)
-{
-	return counters >> vpe_shift();
-}
-
-static inline unsigned int counters_per_cpu_to_total(unsigned int counters)
-{
-	return counters << vpe_shift();
-}
-
-#define __define_perf_accessors(r, n, np)				\
-									\
-static inline unsigned int r_c0_ ## r ## n(void)			\
-{									\
-	unsigned int cpu = vpe_id();					\
-									\
-	switch (cpu) {							\
-	case 0:								\
-		return read_c0_ ## r ## n();				\
-	case 1:								\
-		return read_c0_ ## r ## np();				\
-	default:							\
-		BUG();							\
-	}								\
-	return 0;							\
-}									\
-									\
-static inline void w_c0_ ## r ## n(unsigned int value)			\
-{									\
-	unsigned int cpu = vpe_id();					\
-									\
-	switch (cpu) {							\
-	case 0:								\
-		write_c0_ ## r ## n(value);				\
-		return;							\
-	case 1:								\
-		write_c0_ ## r ## np(value);				\
-		return;							\
-	default:							\
-		BUG();							\
-	}								\
-	return;								\
-}									\
-
-__define_perf_accessors(perfcntr, 0, 2)
-__define_perf_accessors(perfcntr, 1, 3)
-__define_perf_accessors(perfcntr, 2, 0)
-__define_perf_accessors(perfcntr, 3, 1)
-
-__define_perf_accessors(perfctrl, 0, 2)
-__define_perf_accessors(perfctrl, 1, 3)
-__define_perf_accessors(perfctrl, 2, 0)
-__define_perf_accessors(perfctrl, 3, 1)
-
-struct op_mips_model op_model_mipsxx_ops;
-
-static struct mipsxx_register_config {
-	unsigned int control[4];
-	unsigned int counter[4];
-} reg;
-
-/* Compute all of the registers in preparation for enabling profiling.	*/
-
-static void mipsxx_reg_setup(struct op_counter_config *ctr)
-{
-	unsigned int counters = op_model_mipsxx_ops.num_counters;
-	int i;
-
-	/* Compute the performance counter control word.  */
-	for (i = 0; i < counters; i++) {
-		reg.control[i] = 0;
-		reg.counter[i] = 0;
-
-		if (!ctr[i].enabled)
-			continue;
-
-		reg.control[i] = M_PERFCTL_EVENT(ctr[i].event) |
-				 MIPS_PERFCTRL_IE;
-		if (ctr[i].kernel)
-			reg.control[i] |= MIPS_PERFCTRL_K;
-		if (ctr[i].user)
-			reg.control[i] |= MIPS_PERFCTRL_U;
-		if (ctr[i].exl)
-			reg.control[i] |= MIPS_PERFCTRL_EXL;
-		if (boot_cpu_type() == CPU_XLR)
-			reg.control[i] |= XLR_PERFCTRL_ALLTHREADS;
-		reg.counter[i] = 0x80000000 - ctr[i].count;
-	}
-}
-
-/* Program all of the registers in preparation for enabling profiling.	*/
-
-static void mipsxx_cpu_setup(void *args)
-{
-	unsigned int counters = op_model_mipsxx_ops.num_counters;
-
-	if (oprofile_skip_cpu(smp_processor_id()))
-		return;
-
-	switch (counters) {
-	case 4:
-		w_c0_perfctrl3(0);
-		w_c0_perfcntr3(reg.counter[3]);
-		fallthrough;
-	case 3:
-		w_c0_perfctrl2(0);
-		w_c0_perfcntr2(reg.counter[2]);
-		fallthrough;
-	case 2:
-		w_c0_perfctrl1(0);
-		w_c0_perfcntr1(reg.counter[1]);
-		fallthrough;
-	case 1:
-		w_c0_perfctrl0(0);
-		w_c0_perfcntr0(reg.counter[0]);
-	}
-}
-
-/* Start all counters on current CPU */
-static void mipsxx_cpu_start(void *args)
-{
-	unsigned int counters = op_model_mipsxx_ops.num_counters;
-
-	if (oprofile_skip_cpu(smp_processor_id()))
-		return;
-
-	switch (counters) {
-	case 4:
-		w_c0_perfctrl3(WHAT | reg.control[3]);
-		fallthrough;
-	case 3:
-		w_c0_perfctrl2(WHAT | reg.control[2]);
-		fallthrough;
-	case 2:
-		w_c0_perfctrl1(WHAT | reg.control[1]);
-		fallthrough;
-	case 1:
-		w_c0_perfctrl0(WHAT | reg.control[0]);
-	}
-}
-
-/* Stop all counters on current CPU */
-static void mipsxx_cpu_stop(void *args)
-{
-	unsigned int counters = op_model_mipsxx_ops.num_counters;
-
-	if (oprofile_skip_cpu(smp_processor_id()))
-		return;
-
-	switch (counters) {
-	case 4:
-		w_c0_perfctrl3(0);
-		fallthrough;
-	case 3:
-		w_c0_perfctrl2(0);
-		fallthrough;
-	case 2:
-		w_c0_perfctrl1(0);
-		fallthrough;
-	case 1:
-		w_c0_perfctrl0(0);
-	}
-}
-
-static int mipsxx_perfcount_handler(void)
-{
-	unsigned int counters = op_model_mipsxx_ops.num_counters;
-	unsigned int control;
-	unsigned int counter;
-	int handled = IRQ_NONE;
-
-	if (cpu_has_mips_r2 && !(read_c0_cause() & CAUSEF_PCI))
-		return handled;
-
-	switch (counters) {
-#define HANDLE_COUNTER(n)						\
-	case n + 1:							\
-		control = r_c0_perfctrl ## n();				\
-		counter = r_c0_perfcntr ## n();				\
-		if ((control & MIPS_PERFCTRL_IE) &&			\
-		    (counter & M_COUNTER_OVERFLOW)) {			\
-			oprofile_add_sample(get_irq_regs(), n);		\
-			w_c0_perfcntr ## n(reg.counter[n]);		\
-			handled = IRQ_HANDLED;				\
-		}
-	HANDLE_COUNTER(3)
-	fallthrough;
-	HANDLE_COUNTER(2)
-	fallthrough;
-	HANDLE_COUNTER(1)
-	fallthrough;
-	HANDLE_COUNTER(0)
-	}
-
-	return handled;
-}
-
-static inline int __n_counters(void)
-{
-	if (!cpu_has_perf)
-		return 0;
-	if (!(read_c0_perfctrl0() & MIPS_PERFCTRL_M))
-		return 1;
-	if (!(read_c0_perfctrl1() & MIPS_PERFCTRL_M))
-		return 2;
-	if (!(read_c0_perfctrl2() & MIPS_PERFCTRL_M))
-		return 3;
-
-	return 4;
-}
-
-static inline int n_counters(void)
-{
-	int counters;
-
-	switch (current_cpu_type()) {
-	case CPU_R10000:
-		counters = 2;
-		break;
-
-	case CPU_R12000:
-	case CPU_R14000:
-	case CPU_R16000:
-		counters = 4;
-		break;
-
-	default:
-		counters = __n_counters();
-	}
-
-	return counters;
-}
-
-static void reset_counters(void *arg)
-{
-	int counters = (int)(long)arg;
-	switch (counters) {
-	case 4:
-		w_c0_perfctrl3(0);
-		w_c0_perfcntr3(0);
-		fallthrough;
-	case 3:
-		w_c0_perfctrl2(0);
-		w_c0_perfcntr2(0);
-		fallthrough;
-	case 2:
-		w_c0_perfctrl1(0);
-		w_c0_perfcntr1(0);
-		fallthrough;
-	case 1:
-		w_c0_perfctrl0(0);
-		w_c0_perfcntr0(0);
-	}
-}
-
-static irqreturn_t mipsxx_perfcount_int(int irq, void *dev_id)
-{
-	return mipsxx_perfcount_handler();
-}
-
-static int __init mipsxx_init(void)
-{
-	int counters;
-
-	counters = n_counters();
-	if (counters == 0) {
-		printk(KERN_ERR "Oprofile: CPU has no performance counters\n");
-		return -ENODEV;
-	}
-
-#ifdef CONFIG_MIPS_MT_SMP
-	if (!cpu_has_mipsmt_pertccounters)
-		counters = counters_total_to_per_cpu(counters);
-#endif
-	on_each_cpu(reset_counters, (void *)(long)counters, 1);
-
-	op_model_mipsxx_ops.num_counters = counters;
-	switch (current_cpu_type()) {
-	case CPU_M14KC:
-		op_model_mipsxx_ops.cpu_type = "mips/M14Kc";
-		break;
-
-	case CPU_M14KEC:
-		op_model_mipsxx_ops.cpu_type = "mips/M14KEc";
-		break;
-
-	case CPU_20KC:
-		op_model_mipsxx_ops.cpu_type = "mips/20K";
-		break;
-
-	case CPU_24K:
-		op_model_mipsxx_ops.cpu_type = "mips/24K";
-		break;
-
-	case CPU_25KF:
-		op_model_mipsxx_ops.cpu_type = "mips/25K";
-		break;
-
-	case CPU_1004K:
-	case CPU_34K:
-		op_model_mipsxx_ops.cpu_type = "mips/34K";
-		break;
-
-	case CPU_1074K:
-	case CPU_74K:
-		op_model_mipsxx_ops.cpu_type = "mips/74K";
-		break;
-
-	case CPU_INTERAPTIV:
-		op_model_mipsxx_ops.cpu_type = "mips/interAptiv";
-		break;
-
-	case CPU_PROAPTIV:
-		op_model_mipsxx_ops.cpu_type = "mips/proAptiv";
-		break;
-
-	case CPU_P5600:
-		op_model_mipsxx_ops.cpu_type = "mips/P5600";
-		break;
-
-	case CPU_I6400:
-		op_model_mipsxx_ops.cpu_type = "mips/I6400";
-		break;
-
-	case CPU_M5150:
-		op_model_mipsxx_ops.cpu_type = "mips/M5150";
-		break;
-
-	case CPU_5KC:
-		op_model_mipsxx_ops.cpu_type = "mips/5K";
-		break;
-
-	case CPU_R10000:
-		if ((current_cpu_data.processor_id & 0xff) == 0x20)
-			op_model_mipsxx_ops.cpu_type = "mips/r10000-v2.x";
-		else
-			op_model_mipsxx_ops.cpu_type = "mips/r10000";
-		break;
-
-	case CPU_R12000:
-	case CPU_R14000:
-		op_model_mipsxx_ops.cpu_type = "mips/r12000";
-		break;
-
-	case CPU_R16000:
-		op_model_mipsxx_ops.cpu_type = "mips/r16000";
-		break;
-
-	case CPU_SB1:
-	case CPU_SB1A:
-		op_model_mipsxx_ops.cpu_type = "mips/sb1";
-		break;
-
-	case CPU_LOONGSON32:
-		op_model_mipsxx_ops.cpu_type = "mips/loongson1";
-		break;
-
-	case CPU_XLR:
-		op_model_mipsxx_ops.cpu_type = "mips/xlr";
-		break;
-
-	default:
-		printk(KERN_ERR "Profiling unsupported for this CPU\n");
-
-		return -ENODEV;
-	}
-
-	save_perf_irq = perf_irq;
-	perf_irq = mipsxx_perfcount_handler;
-
-	if (get_c0_perfcount_int)
-		perfcount_irq = get_c0_perfcount_int();
-	else if (cp0_perfcount_irq >= 0)
-		perfcount_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
-	else
-		perfcount_irq = -1;
-
-	if (perfcount_irq >= 0)
-		return request_irq(perfcount_irq, mipsxx_perfcount_int,
-				   IRQF_PERCPU | IRQF_NOBALANCING |
-				   IRQF_NO_THREAD | IRQF_NO_SUSPEND |
-				   IRQF_SHARED,
-				   "Perfcounter", save_perf_irq);
-
-	return 0;
-}
-
-static void mipsxx_exit(void)
-{
-	int counters = op_model_mipsxx_ops.num_counters;
-
-	if (perfcount_irq >= 0)
-		free_irq(perfcount_irq, save_perf_irq);
-
-	counters = counters_per_cpu_to_total(counters);
-	on_each_cpu(reset_counters, (void *)(long)counters, 1);
-
-	perf_irq = save_perf_irq;
-}
-
-struct op_mips_model op_model_mipsxx_ops = {
-	.reg_setup	= mipsxx_reg_setup,
-	.cpu_setup	= mipsxx_cpu_setup,
-	.init		= mipsxx_init,
-	.exit		= mipsxx_exit,
-	.cpu_start	= mipsxx_cpu_start,
-	.cpu_stop	= mipsxx_cpu_stop,
-};