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procfs_read/write(): rewrite synchronization for scalability and correctness

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This commit is contained in:
Balazs Gerofi
2016-12-28 14:17:17 +09:00
parent 536ce9f927
commit 40978d162e
6 changed files with 162 additions and 152 deletions
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4
kernel/host.c
View File

@@ -532,7 +532,7 @@ static void syscall_channel_send(struct ihk_ikc_channel_desc *c,
}
extern unsigned long do_kill(struct thread *, int, int, int, struct siginfo *, int ptracecont);
extern void process_procfs_request(unsigned long rarg);
extern void process_procfs_request(struct ikc_scd_packet *rpacket);
extern void terminate_host(int pid);
extern void debug_log(long);
@@ -640,7 +640,7 @@ static int syscall_packet_handler(struct ihk_ikc_channel_desc *c,
break;
case SCD_MSG_PROCFS_REQUEST:
process_procfs_request(packet->arg);
process_procfs_request(packet);
ret = 0;
break;

7
kernel/procfs.c
View File

@@ -76,11 +76,11 @@ procfs_delete_thread(struct thread *thread)
*
* \param rarg returned argument
*/
void
process_procfs_request(unsigned long rarg)
void process_procfs_request(struct ikc_scd_packet *rpacket)
{
unsigned long rarg = rpacket->arg;
unsigned long parg, pbuf;
struct thread *thread = NULL;
struct thread *thread = NULL;
struct process *proc = NULL;
struct process_vm *vm = NULL;
struct procfs_read *r;
@@ -633,6 +633,7 @@ dataunavail:
packet.msg = SCD_MSG_PROCFS_ANSWER;
packet.arg = rarg;
packet.pid = rpacket->pid;
ret = ihk_ikc_send(syscall_channel, &packet, 0);
if (ret < 0) {