Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-06-06 00:14:22 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

arm/cortex-[a|r]: add performance counter implement

Browse Source 
Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an
2022-05-13 20:28:32 +08:00
committed by Alan Carvalho de Assis
parent 4da48c84ff
commit 701e56d4ae
4 changed files with 176 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm/src/armv7-a/Make.defs
+1
View File
@@ -49,6 +49,7 @@ CMN_CSRCS += arm_doirq.c arm_gicv2.c arm_gicv2_dump.c
CMN_CSRCS += arm_initialstate.c arm_mmu.c arm_prefetchabort.c
CMN_CSRCS += arm_schedulesigaction.c arm_sigdeliver.c
CMN_CSRCS += arm_syscall.c arm_tcbinfo.c arm_undefinedinsn.c
CMN_CSRCS += arm_perf.c
ifeq ($(CONFIG_ARMV7A_L2CC_PL310),y)
CMN_CSRCS += arm_l2cc_pl310.c
arch/arm/src/armv7-a/arm_perf.c
+87
View File
@@ -0,0 +1,87 @@
/****************************************************************************
* arch/arm/src/armv7-a/arm_perf.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/arch.h>
#include <nuttx/clock.h>
#include "arm_internal.h"
#include "sctlr.h"
/****************************************************************************
* Private Data
****************************************************************************/
static uint32_t g_cpu_freq;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_perf_*
*
* Description:
* The first interface simply provides the current time value in unknown
* units. NOTE: This function may be called early before the timer has
* been initialized. In that event, the function should just return a
* start time of zero.
*
* Nothing is assumed about the units of this time value. The following
* are assumed, however: (1) The time is an unsigned integer value, (2)
* the time is monotonically increasing, and (3) the elapsed time (also
* in unknown units) can be obtained by subtracting a start time from
* the current time.
*
* The second interface simple converts an elapsed time into well known
* units.
*
****************************************************************************/
void up_perf_init(void *arg)
{
g_cpu_freq = (uint32_t)(uintptr_t)arg;
cp15_pmu_uer(PMUER_UME);
cp15_pmu_pmcr(PMCR_E);
cp15_pmu_cesr(PMCESR_CCES);
}
uint32_t up_perf_getfreq(void)
{
return g_cpu_freq;
}
uint32_t up_perf_gettime(void)
{
return cp15_pmu_rdccr();
}
void up_perf_convert(uint32_t elapsed, struct timespec *ts)
{
uint32_t left;
ts->tv_sec = elapsed / g_cpu_freq;
left = elapsed - ts->tv_sec * g_cpu_freq;
ts->tv_nsec = NSEC_PER_SEC * (uint64_t)left / g_cpu_freq;
}
arch/arm/src/armv7-r/Make.defs
+1
View File
@@ -33,6 +33,7 @@ CMN_CSRCS += arm_cache.c arm_dataabort.c arm_doirq.c arm_gicv2.c
CMN_CSRCS += arm_initialstate.c arm_prefetchabort.c
CMN_CSRCS += arm_schedulesigaction.c arm_sigdeliver.c
CMN_CSRCS += arm_syscall.c arm_tcbinfo.c arm_undefinedinsn.c
CMN_CSRCS += arm_perf.c
# Common C source files
arch/arm/src/armv7-r/arm_perf.c
+87
View File
@@ -0,0 +1,87 @@
/****************************************************************************
* arch/arm/src/armv7-r/arm_perf.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/arch.h>
#include <nuttx/clock.h>
#include "arm_internal.h"
#include "sctlr.h"
/****************************************************************************
* Private Data
****************************************************************************/
static uint32_t g_cpu_freq;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_perf_*
*
* Description:
* The first interface simply provides the current time value in unknown
* units. NOTE: This function may be called early before the timer has
* been initialized. In that event, the function should just return a
* start time of zero.
*
* Nothing is assumed about the units of this time value. The following
* are assumed, however: (1) The time is an unsigned integer value, (2)
* the time is monotonically increasing, and (3) the elapsed time (also
* in unknown units) can be obtained by subtracting a start time from
* the current time.
*
* The second interface simple converts an elapsed time into well known
* units.
*
****************************************************************************/
void up_perf_init(void *arg)
{
g_cpu_freq = (uint32_t)(uintptr_t)arg;
cp15_pmu_uer(PMUER_UME);
cp15_pmu_pmcr(PMCR_E);
cp15_pmu_cesr(PMCESR_CCES);
}
uint32_t up_perf_getfreq(void)
{
return g_cpu_freq;
}
uint32_t up_perf_gettime(void)
{
return cp15_pmu_rdccr();
}
void up_perf_convert(uint32_t elapsed, struct timespec *ts)
{
uint32_t left;
ts->tv_sec = elapsed / g_cpu_freq;
left = elapsed - ts->tv_sec * g_cpu_freq;
ts->tv_nsec = NSEC_PER_SEC * (uint64_t)left / g_cpu_freq;
}