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

Browse Source 
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: Andrew Fleming <afleming@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Andy Fleming 2006-10-27 15:06:32 -05:00 committed by Paul Mackerras
parent e0da0daee1
commit dd6c89f686
11 changed files with 236 additions and 280 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/powerpc/kernel/Makefile
View File

@ -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)

221
arch/powerpc/kernel/perfmon_fsl_booke.c
View File

@ -1,221 +0,0 @@
/* 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);

2
arch/powerpc/kernel/pmc.c
View File

@ -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);

2
arch/powerpc/oprofile/Makefile
View File

@ -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

10
arch/powerpc/oprofile/common.c
View File

@ -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;

2
arch/powerpc/oprofile/op_model_7450.c
View File

@ -81,7 +81,7 @@ static void pmc_stop_ctrs(void)
/* Configures the counters on this CPU based on the global
* settings */
static void fsl7450_cpu_setup(void *unused)
static void fsl7450_cpu_setup(struct op_counter_config *ctr)
{
/* freeze all counters */
pmc_stop_ctrs();

174
arch/powerpc/oprofile/op_model_fsl_booke.c
View File

@ -32,42 +32,152 @@ static unsigned long reset_value[OP_MAX_COUNTER];
static int num_counters;
static int oprofile_running;
static inline unsigned int ctr_read(unsigned int i)
static void init_pmc_stop(int ctr)
{
switch(i) {
u32 pmlca = (PMLCA_FC | PMLCA_FCS | PMLCA_FCU |
PMLCA_FCM1 | PMLCA_FCM0);
u32 pmlcb = 0;
switch (ctr) {
case 0:
return mfpmr(PMRN_PMC0);
mtpmr(PMRN_PMLCA0, pmlca);
mtpmr(PMRN_PMLCB0, pmlcb);
break;
case 1:
return mfpmr(PMRN_PMC1);
mtpmr(PMRN_PMLCA1, pmlca);
mtpmr(PMRN_PMLCB1, pmlcb);
break;
case 2:
return mfpmr(PMRN_PMC2);
mtpmr(PMRN_PMLCA2, pmlca);
mtpmr(PMRN_PMLCB2, pmlcb);
break;
case 3:
return mfpmr(PMRN_PMC3);
mtpmr(PMRN_PMLCA3, pmlca);
mtpmr(PMRN_PMLCB3, pmlcb);
break;
default:
return 0;
panic("Bad ctr number!\n");
}
}
static inline void ctr_write(unsigned int i, unsigned int val)
static void set_pmc_event(int ctr, int event)
{
switch(i) {
case 0:
mtpmr(PMRN_PMC0, val);
break;
case 1:
mtpmr(PMRN_PMC1, val);
break;
case 2:
mtpmr(PMRN_PMC2, val);
break;
case 3:
mtpmr(PMRN_PMC3, val);
break;
default:
break;
}
u32 pmlca;
pmlca = get_pmlca(ctr);
pmlca = (pmlca & ~PMLCA_EVENT_MASK) |
((event << PMLCA_EVENT_SHIFT) &
PMLCA_EVENT_MASK);
set_pmlca(ctr, pmlca);
}
static 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);
}
static 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);
}
static 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);
}
static 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);
}
static void pmc_stop_ctrs(void)
{
u32 pmgc0 = mfpmr(PMRN_PMGC0);
pmgc0 |= PMGC0_FAC;
pmgc0 &= ~(PMGC0_PMIE | PMGC0_FCECE);
mtpmr(PMRN_PMGC0, pmgc0);
}
static 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));
}
static void fsl_booke_cpu_setup(struct op_counter_config *ctr)
{
int i;
/* freeze all counters */
pmc_stop_ctrs();
for (i = 0;i < num_counters;i++) {
init_pmc_stop(i);
set_pmc_event(i, ctr[i].event);
set_pmc_user_kernel(i, ctr[i].user, ctr[i].kernel);
}
}
static void fsl_booke_reg_setup(struct op_counter_config *ctr,
struct op_system_config *sys,
@ -77,23 +187,14 @@ static void fsl_booke_reg_setup(struct op_counter_config *ctr,
num_counters = num_ctrs;
/* freeze all counters */
pmc_stop_ctrs();
/* Our counters count up, and "count" refers to
* how much before the next interrupt, and we interrupt
* on overflow. So we calculate the starting value
* which will give us "count" until overflow.
* Then we set the events on the enabled counters */
for (i = 0; i < num_counters; ++i) {
for (i = 0; i < num_counters; ++i)
reset_value[i] = 0x80000000UL - ctr[i].count;
init_pmc_stop(i);
set_pmc_event(i, ctr[i].event);
set_pmc_user_kernel(i, ctr[i].user, ctr[i].kernel);
}
}
static void fsl_booke_start(struct op_counter_config *ctr)
@ -105,8 +206,8 @@ static void fsl_booke_start(struct op_counter_config *ctr)
for (i = 0; i < num_counters; ++i) {
if (ctr[i].enabled) {
ctr_write(i, reset_value[i]);
/* Set Each enabled counterd to only
* count when the Mark bit is not set */
/* Set each enabled counter to only
* count when the Mark bit is *not* set */
set_pmc_marked(i, 1, 0);
pmc_start_ctr(i, 1);
} else {
@ -177,6 +278,7 @@ static void fsl_booke_handle_interrupt(struct pt_regs *regs,
struct op_powerpc_model op_model_fsl_booke = {
.reg_setup = fsl_booke_reg_setup,
.cpu_setup = fsl_booke_cpu_setup,
.start = fsl_booke_start,
.stop = fsl_booke_stop,
.handle_interrupt = fsl_booke_handle_interrupt,

2
arch/powerpc/oprofile/op_model_power4.c
View File

@ -82,7 +82,7 @@ static inline int mmcra_must_set_sample(void)
return 0;
}
static void power4_cpu_setup(void *unused)
static void power4_cpu_setup(struct op_counter_config *ctr)
{
unsigned int mmcr0 = mmcr0_val;
unsigned long mmcra = mmcra_val;

2
arch/powerpc/oprofile/op_model_rs64.c
View File

@ -102,7 +102,7 @@ static void rs64_reg_setup(struct op_counter_config *ctr,
/* XXX setup user and kernel profiling */
}
static void rs64_cpu_setup(void *unused)
static void rs64_cpu_setup(struct op_counter_config *ctr)
{
unsigned int mmcr0;

87
include/asm-powerpc/oprofile_impl.h
View File

@ -42,7 +42,7 @@ struct op_powerpc_model {
void (*reg_setup) (struct op_counter_config *,
struct op_system_config *,
int num_counters);
void (*cpu_setup) (void *);
void (*cpu_setup) (struct op_counter_config *);
void (*start) (struct op_counter_config *);
void (*stop) (void);
void (*handle_interrupt) (struct pt_regs *,
@ -121,7 +121,90 @@ static inline void ctr_write(unsigned int i, unsigned int val)
break;
}
}
#endif /* !CONFIG_FSL_BOOKE */
#else /* CONFIG_FSL_BOOKE */
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");
}
}
static inline unsigned int ctr_read(unsigned int i)
{
switch(i) {
case 0:
return mfpmr(PMRN_PMC0);
case 1:
return mfpmr(PMRN_PMC1);
case 2:
return mfpmr(PMRN_PMC2);
case 3:
return mfpmr(PMRN_PMC3);
default:
return 0;
}
}
static inline void ctr_write(unsigned int i, unsigned int val)
{
switch(i) {
case 0:
mtpmr(PMRN_PMC0, val);
break;
case 1:
mtpmr(PMRN_PMC1, val);
break;
case 2:
mtpmr(PMRN_PMC2, val);
break;
case 3:
mtpmr(PMRN_PMC3, val);
break;
default:
break;
}
}
#endif /* CONFIG_FSL_BOOKE */
extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);

13
include/asm-powerpc/pmc.h
View File

@ -32,18 +32,5 @@ void release_pmc_hardware(void);
void power4_enable_pmcs(void);
#endif
#ifdef CONFIG_FSL_BOOKE
void init_pmc_stop(int ctr);
void set_pmc_event(int ctr, int event);
void set_pmc_user_kernel(int ctr, int user, int kernel);
void set_pmc_marked(int ctr, int mark0, int mark1);
void pmc_start_ctr(int ctr, int enable);
void pmc_start_ctrs(int enable);
void pmc_stop_ctrs(void);
void dump_pmcs(void);
extern struct op_powerpc_model op_model_fsl_booke;
#endif
#endif /* __KERNEL__ */
#endif /* _POWERPC_PMC_H */