Aksal/nuttx-apps
1
0
Fork 1
mirror of https://github.com/apache/nuttx-apps.git synced 2026-08-01 20:29:00 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

smpcall: add nxsched_smp_call_async and nxsched_smp_call_single_async

Browse source 
reason:
The old implementation of the SMP call, even when using the "no wait" parameter,
could still result in waiting, if invoking it within a critical section
may lead to deadlocks. Therefore, in order to implement a truly asynchronous SMP
call strategy, we have added nxsched_smp_call_async.

Signed-off-by: hujun5 <hujun5@xiaomi.com>
This commit is contained in:
hujun5 2024-10-27 16:26:22 +08:00 • committed by Xiang Xiao
parent 5048d6b472
commit a320e6dda5
1 changed files with 17 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

23
testing/ostest/smp_call.c
View file

@ -29,6 +29,12 @@
#include <nuttx/sched.h>
/****************************************************************************
* Private Data
****************************************************************************/
static struct smp_call_data_s g_call_data;
#if defined(CONFIG_SMP) && defined(CONFIG_BUILD_FLAT)
/****************************************************************************
* Private Functions
@ -37,14 +43,17 @@
static int smp_call_func(void *arg)
{
FAR sem_t *psem = arg;
sem_post(psem);
return OK;
}
static void wdg_wdentry(wdparm_t arg)
{
nxsched_smp_call((1 << CONFIG_SMP_NCPUS) - 1, smp_call_func,
(FAR void *)arg, false);
cpu_set_t cpus = (1 << CONFIG_SMP_NCPUS) - 1;
nxsched_smp_call_init(&g_call_data, smp_call_func, (FAR void *)arg);
nxsched_smp_call_async(cpus, &g_call_data);
}
/****************************************************************************
@ -54,6 +63,7 @@ static void wdg_wdentry(wdparm_t arg)
void smp_call_test(void)
{
cpu_set_t cpuset;
struct smp_call_data_s call_data;
sem_t sem;
int cpucnt;
int cpu;
@ -67,12 +77,13 @@ void smp_call_test(void)
printf("smp_call_test: Test start\n");
sem_init(&sem, 0, 0);
nxsched_smp_call_init(&call_data, smp_call_func, &sem);
for (cpu = 0; cpu < CONFIG_SMP_NCPUS; cpu++)
{
printf("smp_call_test: Call cpu %d, nowait\n", cpu);
nxsched_smp_call_single(cpu, smp_call_func, &sem, false);
nxsched_smp_call_single_async(cpu, &call_data);
status = sem_wait(&sem);
if (status != 0)
@ -83,7 +94,7 @@ void smp_call_test(void)
printf("smp_call_test: Call cpu %d, wait\n", cpu);
nxsched_smp_call_single(cpu, smp_call_func, &sem, true);
nxsched_smp_call_single(cpu, smp_call_func, &sem);
sem_getvalue(&sem, &value);
if (value != 1)
@ -100,7 +111,7 @@ void smp_call_test(void)
sched_getaffinity(0, sizeof(cpu_set_t), &cpuset);
cpucnt = CPU_COUNT(&cpuset);
nxsched_smp_call(cpuset, smp_call_func, &sem, false);
nxsched_smp_call_async(cpuset, &call_data);
for (cpu = 0; cpu < cpucnt; cpu++)
{
@ -128,7 +139,7 @@ void smp_call_test(void)
printf("smp_call_test: Call multi cpu, wait\n");
nxsched_smp_call(cpuset, smp_call_func, &sem, true);
nxsched_smp_call(cpuset, smp_call_func, &sem);
sem_getvalue(&sem, &value);
if (value != cpucnt)