Feb. 18, 2015
6:57 p.m.
On Wed, 18 Feb 2015 19:38:01 +0100, Nicholas Mc Guire said:
On Wed, 18 Feb 2015, Greg KH wrote:
interesting - would you have a reference to some talk/paper/data/... ?
Test for yourself :) config PROFILE_ANNOTATED_BRANCHES bool "Trace likely/unlikely profiler" select TRACE_BRANCH_PROFILING help This tracer profiles all likely and unlikely macros in the kernel. It will display the results in: /sys/kernel/debug/tracing/trace_stat/branch_annotated Note: this will add a significant overhead; only turn this on if you need to profile the system's use of these macros.