sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

arch/sim: All cpu core need conform to CONFIG_SIM_WALLTIME behaviour

Browse Source 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao 2020-04-18 01:04:08 +08:00 committed by patacongo
parent 87dbd7d52d
commit 2a7029dd52
2 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/sim/src/Makefile
View File

@ -94,6 +94,10 @@ ifeq ($(CONFIG_SMP),y)
CSRCS += up_smpsignal.c up_cpuidlestack.c
REQUIREDOBJS += up_smpsignal$(OBJEXT)
HOSTCFLAGS += -DCONFIG_SMP=1 -DCONFIG_SMP_NCPUS=$(CONFIG_SMP_NCPUS)
HOSTCFLAGS += -DCONFIG_USEC_PER_TICK=$(CONFIG_USEC_PER_TICK)
ifeq ($(CONFIG_SIM_WALLTIME),y)
HOSTCFLAGS += -DCONFIG_SIM_WALLTIME=1
endif
HOSTSRCS += up_simsmp.c
STDLIBS += -lpthread
endif

10
arch/sim/src/sim/up_simsmp.c
View File

@ -98,6 +98,7 @@ volatile spinlock_t g_cpu_paused[CONFIG_SMP_NCPUS];
void nx_start(void);
void up_cpu_started(void);
int up_cpu_paused(int cpu);
void host_sleepuntil(uint64_t nsec);
/****************************************************************************
* Private Functions
@ -162,9 +163,18 @@ static void *sim_idle_trampoline(void *arg)
for (; ; )
{
#ifdef CONFIG_SIM_WALLTIME
uint64_t now = 0;
/* Wait a bit so that the timing is close to the correct rate. */
now += 1000 * CONFIG_USEC_PER_TICK;
host_sleepuntil(now);
#else
/* Give other pthreads/CPUs a shot */
pthread_yield();
#endif
}
return NULL;