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-rw-r--r--arch/mips/oprofile/Makefile2
-rw-r--r--arch/mips/oprofile/common.c5
-rw-r--r--arch/mips/oprofile/op_model_mipsxx.c29
-rw-r--r--arch/mips/oprofile/op_model_rm9000.c138
4 files changed, 31 insertions, 143 deletions
diff --git a/arch/mips/oprofile/Makefile b/arch/mips/oprofile/Makefile
index 1208c280f77d..9c0a6782c091 100644
--- a/arch/mips/oprofile/Makefile
+++ b/arch/mips/oprofile/Makefile
@@ -12,5 +12,5 @@ oprofile-$(CONFIG_CPU_MIPS32) += op_model_mipsxx.o
oprofile-$(CONFIG_CPU_MIPS64) += op_model_mipsxx.o
oprofile-$(CONFIG_CPU_R10000) += op_model_mipsxx.o
oprofile-$(CONFIG_CPU_SB1) += op_model_mipsxx.o
-oprofile-$(CONFIG_CPU_RM9000) += op_model_rm9000.o
+oprofile-$(CONFIG_CPU_XLR) += op_model_mipsxx.o
oprofile-$(CONFIG_CPU_LOONGSON2) += op_model_loongson2.o
diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c
index f80480a5a032..e32db1ff02c7 100644
--- a/arch/mips/oprofile/common.c
+++ b/arch/mips/oprofile/common.c
@@ -16,7 +16,6 @@
#include "op_impl.h"
extern struct op_mips_model op_model_mipsxx_ops __weak;
-extern struct op_mips_model op_model_rm9000_ops __weak;
extern struct op_mips_model op_model_loongson2_ops __weak;
static struct op_mips_model *model;
@@ -91,12 +90,10 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
case CPU_R10000:
case CPU_R12000:
case CPU_R14000:
+ case CPU_XLR:
lmodel = &op_model_mipsxx_ops;
break;
- case CPU_RM9000:
- lmodel = &op_model_rm9000_ops;
- break;
case CPU_LOONGSON2:
lmodel = &op_model_loongson2_ops;
break;
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index 28ea1a4cc576..786254630403 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -31,8 +31,22 @@
#define M_COUNTER_OVERFLOW (1UL << 31)
+/* Netlogic XLR specific, count events in all threads in a core */
+#define M_PERFCTL_COUNT_ALL_THREADS (1UL << 13)
+
static int (*save_perf_irq)(void);
+/*
+ * 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)
+ */
+#ifdef CONFIG_CPU_XLR
+#define oprofile_skip_cpu(c) ((cpu_logical_map(c) & 0x3) != 0)
+#else
+#define oprofile_skip_cpu(c) 0
+#endif
+
#ifdef CONFIG_MIPS_MT_SMP
static int cpu_has_mipsmt_pertccounters;
#define WHAT (M_TC_EN_VPE | \
@@ -152,6 +166,8 @@ static void mipsxx_reg_setup(struct op_counter_config *ctr)
reg.control[i] |= M_PERFCTL_USER;
if (ctr[i].exl)
reg.control[i] |= M_PERFCTL_EXL;
+ if (current_cpu_type() == CPU_XLR)
+ reg.control[i] |= M_PERFCTL_COUNT_ALL_THREADS;
reg.counter[i] = 0x80000000 - ctr[i].count;
}
}
@@ -162,6 +178,9 @@ 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);
@@ -183,6 +202,9 @@ 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]);
@@ -200,6 +222,9 @@ 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);
@@ -372,6 +397,10 @@ static int __init mipsxx_init(void)
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");
diff --git a/arch/mips/oprofile/op_model_rm9000.c b/arch/mips/oprofile/op_model_rm9000.c
deleted file mode 100644
index 3aa81384966d..000000000000
--- a/arch/mips/oprofile/op_model_rm9000.c
+++ /dev/null
@@ -1,138 +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 by Ralf Baechle
- */
-#include <linux/init.h>
-#include <linux/oprofile.h>
-#include <linux/interrupt.h>
-#include <linux/smp.h>
-
-#include "op_impl.h"
-
-#define RM9K_COUNTER1_EVENT(event) ((event) << 0)
-#define RM9K_COUNTER1_SUPERVISOR (1ULL << 7)
-#define RM9K_COUNTER1_KERNEL (1ULL << 8)
-#define RM9K_COUNTER1_USER (1ULL << 9)
-#define RM9K_COUNTER1_ENABLE (1ULL << 10)
-#define RM9K_COUNTER1_OVERFLOW (1ULL << 15)
-
-#define RM9K_COUNTER2_EVENT(event) ((event) << 16)
-#define RM9K_COUNTER2_SUPERVISOR (1ULL << 23)
-#define RM9K_COUNTER2_KERNEL (1ULL << 24)
-#define RM9K_COUNTER2_USER (1ULL << 25)
-#define RM9K_COUNTER2_ENABLE (1ULL << 26)
-#define RM9K_COUNTER2_OVERFLOW (1ULL << 31)
-
-extern unsigned int rm9000_perfcount_irq;
-
-static struct rm9k_register_config {
- unsigned int control;
- unsigned int reset_counter1;
- unsigned int reset_counter2;
-} reg;
-
-/* Compute all of the registers in preparation for enabling profiling. */
-
-static void rm9000_reg_setup(struct op_counter_config *ctr)
-{
- unsigned int control = 0;
-
- /* Compute the performance counter control word. */
- /* For now count kernel and user mode */
- if (ctr[0].enabled)
- control |= RM9K_COUNTER1_EVENT(ctr[0].event) |
- RM9K_COUNTER1_KERNEL |
- RM9K_COUNTER1_USER |
- RM9K_COUNTER1_ENABLE;
- if (ctr[1].enabled)
- control |= RM9K_COUNTER2_EVENT(ctr[1].event) |
- RM9K_COUNTER2_KERNEL |
- RM9K_COUNTER2_USER |
- RM9K_COUNTER2_ENABLE;
- reg.control = control;
-
- reg.reset_counter1 = 0x80000000 - ctr[0].count;
- reg.reset_counter2 = 0x80000000 - ctr[1].count;
-}
-
-/* Program all of the registers in preparation for enabling profiling. */
-
-static void rm9000_cpu_setup(void *args)
-{
- uint64_t perfcount;
-
- perfcount = ((uint64_t) reg.reset_counter2 << 32) | reg.reset_counter1;
- write_c0_perfcount(perfcount);
-}
-
-static void rm9000_cpu_start(void *args)
-{
- /* Start all counters on current CPU */
- write_c0_perfcontrol(reg.control);
-}
-
-static void rm9000_cpu_stop(void *args)
-{
- /* Stop all counters on current CPU */
- write_c0_perfcontrol(0);
-}
-
-static irqreturn_t rm9000_perfcount_handler(int irq, void *dev_id)
-{
- unsigned int control = read_c0_perfcontrol();
- struct pt_regs *regs = get_irq_regs();
- uint32_t counter1, counter2;
- uint64_t counters;
-
- /*
- * RM9000 combines two 32-bit performance counters into a single
- * 64-bit coprocessor zero register. To avoid a race updating the
- * registers we need to stop the counters while we're messing with
- * them ...
- */
- write_c0_perfcontrol(0);
-
- counters = read_c0_perfcount();
- counter1 = counters;
- counter2 = counters >> 32;
-
- if (control & RM9K_COUNTER1_OVERFLOW) {
- oprofile_add_sample(regs, 0);
- counter1 = reg.reset_counter1;
- }
- if (control & RM9K_COUNTER2_OVERFLOW) {
- oprofile_add_sample(regs, 1);
- counter2 = reg.reset_counter2;
- }
-
- counters = ((uint64_t)counter2 << 32) | counter1;
- write_c0_perfcount(counters);
- write_c0_perfcontrol(reg.control);
-
- return IRQ_HANDLED;
-}
-
-static int __init rm9000_init(void)
-{
- return request_irq(rm9000_perfcount_irq, rm9000_perfcount_handler,
- 0, "Perfcounter", NULL);
-}
-
-static void rm9000_exit(void)
-{
- free_irq(rm9000_perfcount_irq, NULL);
-}
-
-struct op_mips_model op_model_rm9000_ops = {
- .reg_setup = rm9000_reg_setup,
- .cpu_setup = rm9000_cpu_setup,
- .init = rm9000_init,
- .exit = rm9000_exit,
- .cpu_start = rm9000_cpu_start,
- .cpu_stop = rm9000_cpu_stop,
- .cpu_type = "mips/rm9000",
- .num_counters = 2
-};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 09:10:06 +0000