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uti: Identify uti thread by clone count

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--uti-thread-count <count> is added to mcexec.

Change-Id: Id9ec464412a5bb71e4d9e87d05f79de22d35b067
This commit is contained in:
Masamichi Takagi
2018-09-04 10:27:52 +09:00
parent b0d7f890d0
commit b6ab5911b7
7 changed files with 36 additions and 2 deletions
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2
kernel/host.c
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@@ -505,6 +505,8 @@ static int process_msg_prepare_process(unsigned long rphys)
vm->numa_mem_policy = MPOL_BIND;
}
proc->uti_thread_rank = pn->uti_thread_rank;
#ifdef PROFILE_ENABLE
proc->profile = pn->profile;
thread->profile = pn->profile;

2
kernel/include/process.h
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@@ -556,6 +556,8 @@ struct process {
size_t mpol_threshold;
unsigned long heap_extension;
unsigned long mpol_bind_mask;
int uti_thread_rank; /* Spawn on Linux CPU when clone_count reaches this */
int clone_count;
// perf_event
int perf_status;

1
kernel/include/syscall.h
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@@ -200,6 +200,7 @@ struct program_load_desc {
unsigned long heap_extension;
long stack_premap;
unsigned long mpol_bind_mask;
int uti_thread_rank; /* N-th clone() spawns a thread on Linux CPU */
int nr_processes;
int process_rank;
char shell_path[SHELL_PATH_MAX_LEN];

2
kernel/process.c
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@@ -3455,6 +3455,8 @@ void runq_add_thread(struct thread *thread, int cpu_id)
procfs_create_thread(thread);
__sync_add_and_fetch(&thread->proc->clone_count, 1);
dkprintf("%s: clone_count is %d\n", __FUNCTION__, thread->proc->clone_count);
rusage_num_threads_inc();
#ifdef RUSAGE_DEBUG
if (rusage->num_threads == 1) {

12
kernel/syscall.c
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@@ -2451,6 +2451,18 @@ unsigned long do_fork(int clone_flags, unsigned long newsp,
return -EAGAIN;
}
/* N-th creation put the new on Linux CPU. It's turned off when zero is
set to uti_thread_rank. */
if (oldproc->uti_thread_rank) {
if (oldproc->clone_count + 1 == oldproc->uti_thread_rank) {
old->mod_clone = SPAWN_TO_REMOTE;
kprintf("%s: mod_clone is set to %d\n", __FUNCTION__, old->mod_clone);
} else {
old->mod_clone = SPAWN_TO_LOCAL;
kprintf("%s: mod_clone is set to %d\n", __FUNCTION__, old->mod_clone);
}
}
new = clone_thread(old, curpc,
newsp ? newsp : cursp, clone_flags);