Can a page fault handler be interrupted in Linux?
I am modifying the function like do_anonymous_page in memory.c in the Linux kernel that handles page faults for anonymous memory. I have a data structure that will be updated based on the pages that will be allocated. However, I would need a lock on this data structure so only one process can modify it at a time. I was reading about Linux spinlocks (https://www.kernel.org/doc/Documentation/locking/spinlocks.txt) and they suggest a primitive version to be used in interrupt handlers and a "spin_lock" version that can be used in non-interrupt handlers. My question is whether I can use spin_lock version instead of the primitive version in a page fault handler like do_anonymous_page.
c linux handler page-fault
edited Nov 14 '18 at 4:22
Gunasekar
5201517
asked Nov 14 '18 at 4:13
17291729
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add a comment |
I am modifying the function like do_anonymous_page in memory.c in the Linux kernel that handles page faults for anonymous memory. I have a data structure that will be updated based on the pages that will be allocated. However, I would need a lock on this data structure so only one process can modify it at a time. I was reading about Linux spinlocks (https://www.kernel.org/doc/Documentation/locking/spinlocks.txt) and they suggest a primitive version to be used in interrupt handlers and a "spin_lock" version that can be used in non-interrupt handlers. My question is whether I can use spin_lock version instead of the primitive version in a page fault handler like do_anonymous_page.
c linux handler page-fault
edited Nov 14 '18 at 4:22
Gunasekar
5201517
asked Nov 14 '18 at 4:13
17291729
8012
add a comment |
I am modifying the function like do_anonymous_page in memory.c in the Linux kernel that handles page faults for anonymous memory. I have a data structure that will be updated based on the pages that will be allocated. However, I would need a lock on this data structure so only one process can modify it at a time. I was reading about Linux spinlocks (https://www.kernel.org/doc/Documentation/locking/spinlocks.txt) and they suggest a primitive version to be used in interrupt handlers and a "spin_lock" version that can be used in non-interrupt handlers. My question is whether I can use spin_lock version instead of the primitive version in a page fault handler like do_anonymous_page.
c linux handler page-fault
edited Nov 14 '18 at 4:22
Gunasekar
5201517
asked Nov 14 '18 at 4:13
17291729
8012
I am modifying the function like do_anonymous_page in memory.c in the Linux kernel that handles page faults for anonymous memory. I have a data structure that will be updated based on the pages that will be allocated. However, I would need a lock on this data structure so only one process can modify it at a time. I was reading about Linux spinlocks (https://www.kernel.org/doc/Documentation/locking/spinlocks.txt) and they suggest a primitive version to be used in interrupt handlers and a "spin_lock" version that can be used in non-interrupt handlers. My question is whether I can use spin_lock version instead of the primitive version in a page fault handler like do_anonymous_page.
c linux handler page-fault
c linux handler page-fault
edited Nov 14 '18 at 4:22
Gunasekar
5201517
asked Nov 14 '18 at 4:13
17291729
8012
edited Nov 14 '18 at 4:22
Gunasekar
5201517
asked Nov 14 '18 at 4:13
17291729
8012
edited Nov 14 '18 at 4:22
Gunasekar
5201517
edited Nov 14 '18 at 4:22
Gunasekar
5201517
edited Nov 14 '18 at 4:22
Gunasekar
5201517
5201517
asked Nov 14 '18 at 4:13
17291729
8012
asked Nov 14 '18 at 4:13
17291729
8012
asked Nov 14 '18 at 4:13
17291729
8012
8012
add a comment |
add a comment |
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