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

use no IRQ disable spinlocks for page_table lock

Browse Source
This commit is contained in:
Balazs Gerofi bgerofi@riken.jp
2013-05-10 13:16:32 +09:00
parent c865f63818
commit 90d3d86c2c
1 changed files with 5 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
kernel/process.c
View File

@@ -96,7 +96,7 @@ void update_process_page_table(struct process *process, struct vm_range *range,
{ {
unsigned long p, pa = range->phys; unsigned long p, pa = range->phys;
unsigned long flags = ihk_mc_spinlock_lock(&process->vm->page_table_lock); ihk_mc_spinlock_lock_noirq(&process->vm->page_table_lock);
p = range->start; p = range->start;
while (p < range->end) { while (p < range->end) {
#ifdef USE_LARGE_PAGES #ifdef USE_LARGE_PAGES
@@ -128,7 +128,7 @@ void update_process_page_table(struct process *process, struct vm_range *range,
} }
#endif #endif
} }
ihk_mc_spinlock_unlock(&process->vm->page_table_lock, flags); ihk_mc_spinlock_unlock_noirq(&process->vm->page_table_lock);
} }
int add_process_large_range(struct process *process, int add_process_large_range(struct process *process,
@@ -360,18 +360,17 @@ unsigned long extend_process_region(struct process *proc,
int remove_process_region(struct process *proc, int remove_process_region(struct process *proc,
unsigned long start, unsigned long end) unsigned long start, unsigned long end)
{ {
unsigned long flags;
if ((start & (PAGE_SIZE - 1)) || (end & (PAGE_SIZE - 1))) { if ((start & (PAGE_SIZE - 1)) || (end & (PAGE_SIZE - 1))) {
return -EINVAL; return -EINVAL;
} }
flags = ihk_mc_spinlock_lock(&proc->vm->page_table_lock); ihk_mc_spinlock_lock_noirq(&proc->vm->page_table_lock);
/* We defer freeing to the time of exit */ /* We defer freeing to the time of exit */
while (start < end) { while (start < end) {
ihk_mc_pt_clear_page(proc->vm->page_table, (void *)start); ihk_mc_pt_clear_page(proc->vm->page_table, (void *)start);
start += PAGE_SIZE; start += PAGE_SIZE;
} }
ihk_mc_spinlock_unlock(&proc->vm->page_table_lock, flags); ihk_mc_spinlock_unlock_noirq(&proc->vm->page_table_lock);
return 0; return 0;
} }
@@ -540,7 +539,7 @@ int sched_wakeup_process(struct process *proc, int valid_states)
irqstate = ihk_mc_spinlock_lock(&(v->runq_lock)); irqstate = ihk_mc_spinlock_lock(&(v->runq_lock));
if (proc->status & valid_states) { if (proc->status & valid_states) {
proc->status = PS_RUNNING; xchg4((int *)(&proc->status), PS_RUNNING);
status = 0; status = 0;
} }
else { else {