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uti: Workaround not to share CPU with OpenMP threads

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* Assign uti thread to the last idle CPU so that it's not shared with
  an OpenMP thread

Change-Id: Ia42cae056ce81fde9b6dab6286b39a52f3c9e172
This commit is contained in:
Masamichi Takagi
2018-09-03 18:08:03 +09:00
parent dbba7dea18
commit 5cb8a1f10f
8 changed files with 34 additions and 14 deletions
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3
kernel/host.c
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@@ -506,6 +506,7 @@ static int process_msg_prepare_process(unsigned long rphys)
}
proc->uti_thread_rank = pn->uti_thread_rank;
proc->uti_use_last_cpu = pn->uti_use_last_cpu;
#ifdef PROFILE_ENABLE
proc->profile = pn->profile;
@@ -612,7 +613,7 @@ static int syscall_packet_handler(struct ihk_ikc_channel_desc *c,
case SCD_MSG_SCHEDULE_PROCESS:
thread = (struct thread *)packet->arg;
cpuid = obtain_clone_cpuid(&thread->cpu_set);
cpuid = obtain_clone_cpuid(&thread->cpu_set, 0);
if (cpuid == -1) {
kprintf("No CPU available\n");
ret = -1;