#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/slab.h>
-#include <linux/oom.h>
#include <linux/cpu.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
+#include <wrapper/mm.h>
#include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_all() */
#include <wrapper/ringbuffer/config.h>
#include <wrapper/ringbuffer/backend.h>
num_pages = size >> PAGE_SHIFT;
/*
- * Verify that the number of pages requested for that buffer is smaller
- * than the number of available pages on the system. si_mem_available()
- * returns an _estimate_ of the number of available pages.
+ * Verify that there is enough free pages available on the system for
+ * the current allocation request.
+ * wrapper_check_enough_free_pages uses si_mem_available() if available
+ * and returns if there should be enough free pages based on the
+ * current estimate.
*/
- if (num_pages > si_mem_available())
+ if (!wrapper_check_enough_free_pages(num_pages))
goto not_enough_pages;
/*
* end up running out of memory because of this buffer allocation, we
* want to kill the offending app first.
*/
- set_current_oom_origin();
+ wrapper_set_current_oom_origin();
num_pages_per_subbuf = num_pages >> get_count_order(num_subbuf);
subbuf_size = chanb->subbuf_size;
* will not fault.
*/
wrapper_vmalloc_sync_all();
- clear_current_oom_origin();
+ wrapper_clear_current_oom_origin();
vfree(pages);
return 0;
array_error:
vfree(pages);
pages_error:
- clear_current_oom_origin();
+ wrapper_clear_current_oom_origin();
not_enough_pages:
return -ENOMEM;
}