tree 4bebd0b9170e125a88465eda371cd5f47dc6a5e8
parent 84318dd957ca0166a5524707052fd5405fc903a2
author Primiano Tucci <primiano@google.com> 1538481071 +0100
committer Primiano Tucci <primiano@google.com> 1538486608 +0000

Ftrace: Add Setup/Start support for fast triggering

Introduce the notion of Setup vs Start in the ftrace
data source. This make it so that ftrace can be in a
state where M configurations are "setup" (buffers are
allocated, categories configured ...) but only N <= M
of these are "started" (tracing is enabled).

E2E latency (incl all IPC) measured on Pixel2: 2-3ms

Bug: 116547201
Change-Id: I1a995f25c30891b53eae902e137b7adf1dbbc61d