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mcctrl: use GFP_ATOMIC in atomic context

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This commit is contained in:
Balazs Gerofi
2016-08-14 14:28:21 +09:00
parent 3fa3920bb3
commit fbbaaf5b54
4 changed files with 9 additions and 7 deletions
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2
executer/kernel/mcctrl/procfs.c
View File

@ -749,7 +749,7 @@ int procfsm_packet_handler(void *os, int msg, int pid, unsigned long arg)
{
struct procfs_work *work = NULL;
work = kzalloc(sizeof(*work), GFP_KERNEL);
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work) {
printk("%s: kzalloc failed\n", __FUNCTION__);
return -1;

8
executer/kernel/mcctrl/syscall.c
View File

@ -281,7 +281,7 @@ static int remote_page_fault(struct mcctrl_usrdata *usrdata, void *fault_addr, u
phys, sizeof(*resp), NULL, 0);
retry_alloc:
wqhln = kmalloc(sizeof(*wqhln), GFP_KERNEL);
wqhln = kmalloc(sizeof(*wqhln), GFP_ATOMIC);
if (!wqhln) {
printk("WARNING: coudln't alloc wait queue head, retrying..\n");
goto retry_alloc;
@ -779,7 +779,7 @@ static int pager_req_create(ihk_os_t os, int fd, uintptr_t result_pa)
up(&pager_sem);
newpager = kzalloc(sizeof(*newpager), GFP_KERNEL);
newpager = kzalloc(sizeof(*newpager), GFP_ATOMIC);
if (!newpager) {
error = -ENOMEM;
printk("pager_req_create(%d,%lx):kzalloc failed. %d\n", fd, (long)result_pa, error);
@ -1035,7 +1035,7 @@ static int pager_req_map(ihk_os_t os, int fd, size_t len, off_t off,
uintptr_t phys;
dprintk("pager_req_map(%p,%d,%lx,%lx,%lx)\n", os, fd, len, off, result_rpa);
pager = kzalloc(sizeof(*pager), GFP_KERNEL);
pager = kzalloc(sizeof(*pager), GFP_ATOMIC);
if (!pager) {
error = -ENOMEM;
printk("pager_req_map(%p,%d,%lx,%lx,%lx):kzalloc failed. %d\n", os, fd, len, off, result_rpa, error);
@ -1514,7 +1514,7 @@ int __do_in_kernel_syscall(ihk_os_t os, struct ikc_scd_packet *packet)
struct mcctrl_per_proc_data *ppd = NULL;
int i;
ppd = kmalloc(sizeof(*ppd), GFP_KERNEL);
ppd = kmalloc(sizeof(*ppd), GFP_ATOMIC);
if (!ppd) {
printk("ERROR: allocating per process data\n");
error = -ENOMEM;

2
executer/kernel/mcctrl/sysfs.c
View File

@ -1888,7 +1888,7 @@ sysfsm_packet_handler(void *os, int msg, int err, long arg1, long arg2)
{
struct sysfs_work *work = NULL;
work = kzalloc(sizeof(*work), GFP_KERNEL);
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work) {
eprintk("mcctrl:sysfsm_packet_handler:kzalloc failed\n");
return;

4
kernel/syscall.c
View File

@ -190,6 +190,9 @@ long do_syscall(struct syscall_request *req, int cpu, int pid)
dkprintf("SC(%d)[%3d] sending syscall\n",
ihk_mc_get_processor_id(),
req->number);
irqstate = 0; /* for avoidance of warning */
barrier();
if(req->number != __NR_exit_group){
if(proc->nohost && // host is down
@ -199,7 +202,6 @@ long do_syscall(struct syscall_request *req, int cpu, int pid)
++thread->in_syscall_offload;
}
irqstate = 0; /* for avoidance of warning */
if(req->number == __NR_exit_group ||
req->number == __NR_gettid ||
req->number == __NR_kill){ // interrupt syscall