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| author | Seiji Aguchi <[email protected]> | 2013-10-30 20:39:03 +0000 |
|---|---|---|
| committer | H. Peter Anvin <[email protected]> | 2013-11-08 22:15:49 +0000 |
| commit | d34603b07c4255b2b00a546d34f297ccd50ae4c6 (patch) | |
| tree | 133e7788eb885d11cecc0590184f8825f4c0836f /drivers/net/xen-netback/interface.c | |
| parent | x86, trace: Delete __trace_alloc_intr_gate() (diff) | |
| download | kernel-d34603b07c4255b2b00a546d34f297ccd50ae4c6.tar.gz kernel-d34603b07c4255b2b00a546d34f297ccd50ae4c6.zip | |
x86, trace: Add page fault tracepoints
This patch introduces page fault tracepoints to x86 architecture
by switching IDT.
Two events, for user and kernel spaces, are introduced at the beginning
of page fault handler for tracing.
- User space event
There is a request of page fault event for user space as below.
https://lkml.kernel.org/r/1368079520-11015-2-git-send-email-fdeslaur+()+gmail+!+com
https://lkml.kernel.org/r/1368079520-11015-1-git-send-email-fdeslaur+()+gmail+!+com
- Kernel space event:
When we measure an overhead in kernel space for investigating performance
issues, we can check if it comes from the page fault events.
Signed-off-by: Seiji Aguchi <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: H. Peter Anvin <[email protected]>
Diffstat (limited to 'drivers/net/xen-netback/interface.c')
0 files changed, 0 insertions, 0 deletions