Commit dd6c89f6 authored by Andy Fleming's avatar Andy Fleming Committed by Paul Mackerras
Browse files

[POWERPC] Fix oprofile support for e500 in arch/powerpc 



Fixed a compile error in building the 85xx support with oprofile, and in
the process cleaned up some issues with the fsl_booke performance monitor
code.

* Reorganized FSL Book-E performance monitoring code so that the 7450
  wouldn't be built if the e500 was, and cleaned it up so it was more
  self-contained.

* Added a cpu_setup function for FSL Book-E.  The original
  cpu_setup function prototype had no arguments, assuming that
  the reg_setup function would copy the required information into
  variables which represented the registers.  This was silly for
  e500, since it has 1 register per counter (rather than 3 for
  all counters), so the code has been restructured to have
  cpu_setup take the current counter config array as an argument,
  with op_powerpc_setup() invoking op_powerpc_cpu_setup() through
  on_each_cpu(), and op_powerpc_cpu_setup() invoking the
  model-specific cpu_setup function with an argument.  The
  argument is ignored on all other platforms at present.

* Fixed a confusing line where a trinary operator only had two
  arguments

Signed-off-by: default avatarAndrew Fleming <afleming@freescale.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent e0da0dae

arch/powerpc/kernel/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -38,7 +38,6 @@ obj-$(CONFIG_6xx) += idle_6xx.o l2cr_6xx.o cpu_setup_6xx.o 
obj-$(CONFIG_TAU)		+= tau_6xx.o

obj32-$(CONFIG_SOFTWARE_SUSPEND) += swsusp_32.o

obj32-$(CONFIG_MODULES)		+= module_32.o

obj-$(CONFIG_E500)		+= perfmon_fsl_booke.o



ifeq ($(CONFIG_PPC_MERGE),y)

arch/powerpc/kernel/perfmon_fsl_booke.c

deleted100644 → 0
+0 −221
Original line number Diff line number Diff line 
/* arch/powerpc/kernel/perfmon_fsl_booke.c

 * Freescale Book-E Performance Monitor code

 *

 * Author: Andy Fleming

 * Copyright (c) 2004 Freescale Semiconductor, Inc

 *

 *  This program is free software; you can redistribute it and/or

 *  modify it under the terms of the GNU General Public License

 *  as published by the Free Software Foundation; either version

 *  2 of the License, or (at your option) any later version.

 */



#include <linux/errno.h>

#include <linux/sched.h>

#include <linux/kernel.h>

#include <linux/mm.h>

#include <linux/stddef.h>

#include <linux/unistd.h>

#include <linux/ptrace.h>

#include <linux/slab.h>

#include <linux/user.h>

#include <linux/a.out.h>

#include <linux/interrupt.h>

#include <linux/init.h>

#include <linux/module.h>

#include <linux/prctl.h>



#include <asm/pgtable.h>

#include <asm/uaccess.h>

#include <asm/system.h>

#include <asm/io.h>

#include <asm/reg.h>

#include <asm/xmon.h>

#include <asm/pmc.h>



static inline u32 get_pmlca(int ctr);

static inline void set_pmlca(int ctr, u32 pmlca);



static inline u32 get_pmlca(int ctr)

{

	u32 pmlca;



	switch (ctr) {

		case 0:

			pmlca = mfpmr(PMRN_PMLCA0);

			break;

		case 1:

			pmlca = mfpmr(PMRN_PMLCA1);

			break;

		case 2:

			pmlca = mfpmr(PMRN_PMLCA2);

			break;

		case 3:

			pmlca = mfpmr(PMRN_PMLCA3);

			break;

		default:

			panic("Bad ctr number\n");

	}



	return pmlca;

}



static inline void set_pmlca(int ctr, u32 pmlca)

{

	switch (ctr) {

		case 0:

			mtpmr(PMRN_PMLCA0, pmlca);

			break;

		case 1:

			mtpmr(PMRN_PMLCA1, pmlca);

			break;

		case 2:

			mtpmr(PMRN_PMLCA2, pmlca);

			break;

		case 3:

			mtpmr(PMRN_PMLCA3, pmlca);

			break;

		default:

			panic("Bad ctr number\n");

	}

}



void init_pmc_stop(int ctr)

{

	u32 pmlca = (PMLCA_FC | PMLCA_FCS | PMLCA_FCU |

			PMLCA_FCM1 | PMLCA_FCM0);

	u32 pmlcb = 0;



	switch (ctr) {

		case 0:

			mtpmr(PMRN_PMLCA0, pmlca);

			mtpmr(PMRN_PMLCB0, pmlcb);

			break;

		case 1:

			mtpmr(PMRN_PMLCA1, pmlca);

			mtpmr(PMRN_PMLCB1, pmlcb);

			break;

		case 2:

			mtpmr(PMRN_PMLCA2, pmlca);

			mtpmr(PMRN_PMLCB2, pmlcb);

			break;

		case 3:

			mtpmr(PMRN_PMLCA3, pmlca);

			mtpmr(PMRN_PMLCB3, pmlcb);

			break;

		default:

			panic("Bad ctr number!\n");

	}

}



void set_pmc_event(int ctr, int event)

{

	u32 pmlca;



	pmlca = get_pmlca(ctr);



	pmlca = (pmlca & ~PMLCA_EVENT_MASK) |

		((event << PMLCA_EVENT_SHIFT) &

		 PMLCA_EVENT_MASK);



	set_pmlca(ctr, pmlca);

}



void set_pmc_user_kernel(int ctr, int user, int kernel)

{

	u32 pmlca;



	pmlca = get_pmlca(ctr);



	if(user)

		pmlca &= ~PMLCA_FCU;

	else

		pmlca |= PMLCA_FCU;



	if(kernel)

		pmlca &= ~PMLCA_FCS;

	else

		pmlca |= PMLCA_FCS;



	set_pmlca(ctr, pmlca);

}



void set_pmc_marked(int ctr, int mark0, int mark1)

{

	u32 pmlca = get_pmlca(ctr);



	if(mark0)

		pmlca &= ~PMLCA_FCM0;

	else

		pmlca |= PMLCA_FCM0;



	if(mark1)

		pmlca &= ~PMLCA_FCM1;

	else

		pmlca |= PMLCA_FCM1;



	set_pmlca(ctr, pmlca);

}



void pmc_start_ctr(int ctr, int enable)

{

	u32 pmlca = get_pmlca(ctr);



	pmlca &= ~PMLCA_FC;



	if (enable)

		pmlca |= PMLCA_CE;

	else

		pmlca &= ~PMLCA_CE;



	set_pmlca(ctr, pmlca);

}



void pmc_start_ctrs(int enable)

{

	u32 pmgc0 = mfpmr(PMRN_PMGC0);



	pmgc0 &= ~PMGC0_FAC;

	pmgc0 |= PMGC0_FCECE;



	if (enable)

		pmgc0 |= PMGC0_PMIE;

	else

		pmgc0 &= ~PMGC0_PMIE;



	mtpmr(PMRN_PMGC0, pmgc0);

}



void pmc_stop_ctrs(void)

{

	u32 pmgc0 = mfpmr(PMRN_PMGC0);



	pmgc0 |= PMGC0_FAC;



	pmgc0 &= ~(PMGC0_PMIE | PMGC0_FCECE);



	mtpmr(PMRN_PMGC0, pmgc0);

}



void dump_pmcs(void)

{

	printk("pmgc0: %x\n", mfpmr(PMRN_PMGC0));

	printk("pmc\t\tpmlca\t\tpmlcb\n");

	printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC0),

			mfpmr(PMRN_PMLCA0), mfpmr(PMRN_PMLCB0));

	printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC1),

			mfpmr(PMRN_PMLCA1), mfpmr(PMRN_PMLCB1));

	printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC2),

			mfpmr(PMRN_PMLCA2), mfpmr(PMRN_PMLCB2));

	printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC3),

			mfpmr(PMRN_PMLCA3), mfpmr(PMRN_PMLCB3));

}



EXPORT_SYMBOL(init_pmc_stop);

EXPORT_SYMBOL(set_pmc_event);

EXPORT_SYMBOL(set_pmc_user_kernel);

EXPORT_SYMBOL(set_pmc_marked);

EXPORT_SYMBOL(pmc_start_ctr);

EXPORT_SYMBOL(pmc_start_ctrs);

EXPORT_SYMBOL(pmc_stop_ctrs);

EXPORT_SYMBOL(dump_pmcs);

arch/powerpc/kernel/pmc.c

+1 −1
Original line number Diff line number Diff line
@@ -71,7 +71,7 @@ int reserve_pmc_hardware(perf_irq_t new_perf_irq) 
	}



	pmc_owner_caller = __builtin_return_address(0);

	perf_irq = new_perf_irq ? : dummy_perf;

	perf_irq = new_perf_irq ? new_perf_irq : dummy_perf;



 out:

	spin_unlock(&pmc_owner_lock);

arch/powerpc/oprofile/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -13,4 +13,4 @@ DRIVER_OBJS := $(addprefix ../../../drivers/oprofile/, \ 
oprofile-y := $(DRIVER_OBJS) common.o backtrace.o

oprofile-$(CONFIG_PPC64) += op_model_rs64.o op_model_power4.o

oprofile-$(CONFIG_FSL_BOOKE) += op_model_fsl_booke.o

oprofile-$(CONFIG_PPC32) += op_model_7450.o
 
oprofile-$(CONFIG_6xx) += op_model_7450.o

arch/powerpc/oprofile/common.c

+8 −2
Original line number Diff line number Diff line
@@ -34,6 +34,11 @@ static void op_handle_interrupt(struct pt_regs *regs) 
	model->handle_interrupt(regs, ctr);

}



static void op_powerpc_cpu_setup(void *dummy)

{

	model->cpu_setup(ctr);

}



static int op_powerpc_setup(void)

{

	int err;
@@ -47,7 +52,7 @@ static int op_powerpc_setup(void) 
	model->reg_setup(ctr, &sys, model->num_counters);



	/* Configure the registers on all cpus.  */

	on_each_cpu(model->cpu_setup, NULL, 0, 1);

	on_each_cpu(op_powerpc_cpu_setup, NULL, 0, 1);



	return 0;

}
@@ -142,7 +147,8 @@ int __init oprofile_arch_init(struct oprofile_operations *ops) 
		case PPC_OPROFILE_POWER4:

			model = &op_model_power4;

			break;

#else

#endif

#ifdef CONFIG_6xx

		case PPC_OPROFILE_G4:

			model = &op_model_7450;

			break;

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