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(parent: 3dc4f7c) | patch
x86: vdso: pvclock gettime support
authorMarcelo Tosatti <mtosatti@redhat.com>
Wed, 28 Nov 2012 01:28:57 +0000 (23:28 -0200)
committerMarcelo Tosatti <mtosatti@redhat.com>
Wed, 28 Nov 2012 01:29:11 +0000 (23:29 -0200)
commit51c19b4f5927f5a646e93d69f73c7e89ea14e737
treea48486f72dc433fd516684d4441022650429d333tree | snapshot
parent3dc4f7cfb7441e5e0fed3a02fc81cdaabd28300acommit | diff
x86: vdso: pvclock gettime support

Improve performance of time system calls when using Linux pvclock,
by reading time info from fixmap visible copy of pvclock data.

Originally from Jeremy Fitzhardinge.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
arch/x86/include/asm/vsyscall.h diff | blob | history
arch/x86/vdso/vclock_gettime.c diff | blob | history
arch/x86/vdso/vgetcpu.c diff | blob | history
Domain: System / Uncategorized;