On 06/29/20 15:23, Phil Auld wrote: > Add a bare tracepoint trace_sched_update_nr_running_tp which tracks > ->nr_running CPU's rq. This is used to accurately trace this data and > provide a visualization of scheduler imbalances in, for example, the > form of a heat map. The tracepoint is accessed by loading an external > kernel module. An example module (forked from Qais' module and including > the pelt related tracepoints) can be found at: > > https://github.com/auldp/tracepoints-helpers.git > > A script to turn the trace-cmd report output into a heatmap plot can be > found at: > > https://github.com/jirvoz/plot-nr-running > > The tracepoints are added to add_nr_running() and sub_nr_running() which > are in kernel/sched/sched.h. In order to avoid CREATE_TRACE_POINTS in > the header a wrapper call is used and the trace/events/sched.h include > is moved before sched.h in kernel/sched/core. > > Signed-off-by: Phil Auld <[email protected]> > CC: Qais Yousef <[email protected]> > CC: Ingo Molnar <[email protected]> > CC: Peter Zijlstra <[email protected]> > CC: Vincent Guittot <[email protected]> > CC: Steven Rostedt <[email protected]> > CC: [email protected] > ---
LGTM. Reviewed-by: Qais Yousef <[email protected]> Thanks -- Qais Yousef
