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

use per-process wait queues for system call request processing in mcexec so that multiple processes can share the per-core system call channels

Browse Source
This commit is contained in:
Balazs Gerofi bgerofi@riken.jp
2014-03-27 19:31:42 +09:00
parent 11ddbcf3c8
commit ccd770ba24
8 changed files with 138 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
kernel/include/syscall.h
View File

@ -87,6 +87,7 @@ struct user_desc {
struct ikc_scd_packet {
int msg;
int ref;
int pid;
int err;
unsigned long arg;
};

10
kernel/syscall.c
View File

@ -116,6 +116,9 @@ static void send_syscall(struct syscall_request *req, int cpu)
scp = &get_cpu_local_var(0)->scp2;
syscall_channel = get_cpu_local_var(0)->syscall_channel2;
/* XXX: is this really going to work if multiple processes
* exit/receive signals at the same time?? */
cpu = num_processors;
}
else{
@ -144,8 +147,9 @@ static void send_syscall(struct syscall_request *req, int cpu)
#ifdef SYSCALL_BY_IKC
packet.msg = SCD_MSG_SYSCALL_ONESIDE;
packet.ref = cpu;
packet.arg = scp->request_rpa;
packet.pid = cpu_local_var(current)->pid;
packet.arg = scp->request_rpa;
dkprintf("send syscall, nr: %d, pid: %d\n", req->number, packet.pid);
ihk_ikc_send(syscall_channel, &packet, 0);
#endif
}
@ -186,6 +190,8 @@ long do_syscall(struct syscall_request *req, ihk_mc_user_context_t *ctx, int cpu
}
if (res->status == STATUS_PAGE_FAULT) {
dkprintf("STATUS_PAGE_FAULT in syscall, pid: %d\n",
cpu_local_var(current)->pid);
error = page_fault_process(get_cpu_local_var(cpu)->current,
(void *)res->fault_address,
res->fault_reason);