gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

modify for PVAS

Browse Source
This commit is contained in:
Tomoki Shirasawa
2015-11-25 14:27:20 +09:00
parent dbddab4356
commit 544971d665
4 changed files with 83 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
kernel/syscall.c
View File

@@ -111,6 +111,7 @@ extern int num_processors;
extern unsigned long ihk_mc_get_ns_per_tsc(void);
extern int ptrace_detach(int pid, int data);
extern void debug_log(unsigned long);
extern void free_all_process_memory_range(struct process_vm *vm);
int prepare_process_ranges_args_envs(struct thread *thread,
struct program_load_desc *pn,
@@ -197,15 +198,17 @@ long do_syscall(struct syscall_request *req, int cpu, int pid)
int islock = 0;
unsigned long irqstate;
struct thread *thread = cpu_local_var(current);
struct process *proc = thread->proc;
dkprintf("SC(%d)[%3d] sending syscall\n",
ihk_mc_get_processor_id(),
req->number);
if(req->number != __NR_exit_group){
if(thread->proc->nohost) // host is down
if(proc->nohost && // host is down
pid == proc->pid) {
return -EPIPE;
}
++thread->in_syscall_offload;
}
@@ -552,6 +555,7 @@ terminate(int rc, int sig)
struct process *child;
struct process *next;
struct process *pid1 = resource_set->pid1;
struct process_vm *vm;
struct mcs_rwlock_node_irqsave lock;
struct mcs_rwlock_node updatelock;
struct mcs_rwlock_node childlock;
@@ -624,10 +628,8 @@ terminate(int rc, int sig)
delete_proc_procfs_files(proc->pid);
release_process_vm(proc->vm);
while (ihk_atomic_read(&proc->vm->refcount) != 0) {
cpu_pause();
}
vm = proc->vm;
free_all_process_memory_range(vm);
if (proc->saved_cmdline) {
kfree(proc->saved_cmdline);
@@ -715,6 +717,7 @@ terminate(int rc, int sig)
request.number = __NR_exit_group;
request.args[0] = proc->exit_status;
do_syscall(&request, ihk_mc_get_processor_id(), proc->pid);
proc->nohost = 1;
}
// Send signal to parent
@@ -749,6 +752,7 @@ terminate(int rc, int sig)
mythread->status = PS_EXITED;
release_thread(mythread);
release_process_vm(vm);
schedule();
// no return
}
@@ -1426,14 +1430,15 @@ SYSCALL_DECLARE(getppid)
void
settid(struct thread *thread, int mode, int newcpuid, int oldcpuid)
{
ihk_mc_user_context_t ctx;
struct syscall_request request IHK_DMA_ALIGN;
unsigned long rc;
ihk_mc_syscall_arg0(&ctx) = mode;
ihk_mc_syscall_arg1(&ctx) = thread->proc->pid;
ihk_mc_syscall_arg2(&ctx) = newcpuid;
ihk_mc_syscall_arg3(&ctx) = oldcpuid;
rc = syscall_generic_forwarding(__NR_gettid, &ctx);
request.number = __NR_gettid;
request.args[0] = mode;
request.args[1] = thread->proc->pid;
request.args[2] = newcpuid;
request.args[3] = oldcpuid;
rc = do_syscall(&request, ihk_mc_get_processor_id(), thread->proc->pid);
if (mode != 2) {
thread->tid = rc;
}
@@ -1833,10 +1838,10 @@ unsigned long do_fork(int clone_flags, unsigned long newsp,
return -ENOMEM;
}
cpu_set(cpuid, &new->vm->cpu_set, &new->vm->cpu_set_lock);
cpu_set(cpuid, &new->vm->address_space->cpu_set,
&new->vm->address_space->cpu_set_lock);
if (clone_flags & CLONE_VM) {
new->proc->pid = cpu_local_var(current)->proc->pid;
settid(new, 1, cpuid, -1);
}
/* fork() a new process on the host */