timer: update comments
commit490ab15a4948f9150fae781fc421becce9221b32
authorCao jin <caoj.fnst@cn.fujitsu.com>
Fri, 29 Jul 2016 11:05:36 +0000 (29 19:05 +0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 13 Sep 2016 17:08:44 +0000 (13 19:08 +0200)
tree7624e8ef06393999c5e216605fbc7674cd851a84
parent5b1b6dbd94e2e2e98920f886cb32fcf4a1520b50
timer: update comments

The comments is outdated. The patch has following changes:
1. tense correction.
2. all clock time value is returned in nanoseconds, so, they are same in
precision.
3. virtual clock doesn't use cpu cycles.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Message-Id: <1469790338-28990-2-git-send-email-caoj.fnst@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
include/qemu/timer.h