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| author | Keir Fraser <keir.fraser@citrix.com> | 2010-01-22 10:59:03 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2010-01-22 10:59:03 +0000 |
| commit | d6aaa9ee0f8ba5d2d8ff1187b05ed9becee0b40c (patch) | |
| tree | 3b69d194167117b66f08f86321756f58703a44e7 /tools/blktap | |
| parent | 379e63ed3da8f6d874d9bc5d6fa05a85afb60238 (diff) | |
| download | xen-d6aaa9ee0f8ba5d2d8ff1187b05ed9becee0b40c.tar.gz xen-d6aaa9ee0f8ba5d2d8ff1187b05ed9becee0b40c.tar.bz2 xen-d6aaa9ee0f8ba5d2d8ff1187b05ed9becee0b40c.zip | |
libxc: New hcall_buf_{prep,release} pre-mlock interface
Allow certain performance-critical hypercall wrappers to register data
buffers via a new interface which allows them to be 'bounced' into a
pre-mlock'ed page-sized per-thread data area. This saves the cost of
mlock/munlock on every such hypercall, which can be very expensive on
modern kernels.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Diffstat (limited to 'tools/blktap')
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