u-boot.git/tools/proftool.c, branch v2024.01

trace: Fix alignment logic in flyrecord header

2023-09-23T15:00:37+00:00

Current alignment which is using 16 bytes is not correct in connection to
trace_clocks description and it's length.
That's why use start_addr variable and record proper size based on used
entries.

Fixes: be16fc81b2ed ("trace: Update proftool to use new binary format").
Signed-off-by: Michal Simek 
Reviewed-by: Simon Glass

trace: Move trace_clocks description above record offset calculation

2023-09-23T15:00:37+00:00

Flyrecord tracing data are page aligned that's why it is necessary to
calculate alignment properly. Because trace_clocks description is the part
of record length it is necessary to have information about length earlier.

Signed-off-by: Michal Simek 
Reviewed-by: Simon Glass

trace: Use 64bit variable for start and len

2023-09-23T15:00:37+00:00

tputq() requires variables to have 64bit width that's why make them 64bit
to clean alignment requirement.

Signed-off-by: Michal Simek 
Reviewed-by: Simon Glass

proftool: Remove unused variables in make_flame_tree

2023-03-22T19:22:48+00:00

With clang-15 we now get reported that in the make_flame_tree function,
neither the missing_count nor depth variables are used, only
incremenete/decremented. Remove these.

Signed-off-by: Tom Rini 
Reviewed-by: Simon Glass

trace: Provide a flamegraph that uses timing

2023-02-11T17:22:35+00:00

Add a second variant of the flame graph that shows records in terms of the
number of microseconds used by each call stack. This is a useful way of
seeing where time is going within the execution of U-Boot.

This requires a call stack that records the start time of each function,
as well as a way of subtracting all time consumed by child functions, so
that this time is not counted twice by the flamegraph. The time values in
the output are just for the function itself, not for its children.

Signed-off-by: Simon Glass

trace: Support output of a flamegraph

2023-02-11T17:22:35+00:00

It is useful to see how many times each function is called, particularly
in the context of its callers. A flamegraph is a way of showing this.

Support output in this format which can be used by the flamegraph.pl
script, to generate an SVG image for browsing.

Signed-off-by: Simon Glass

trace: Support output of funcgraph records

2023-02-11T17:22:35+00:00

Add support for writing ftrace records in the 'funcgraph' format, which
shows function entry and exit points as well as the time taken by each
function.

Signed-off-by: Simon Glass

trace: Use text_base from the trace header

2023-02-11T17:22:35+00:00

Use the information in the trace header instead of reading it from the
trace records. Add debugging to check that System.map and the trace header
agree on this value.

Signed-off-by: Simon Glass

trace: Drop use of objsection

2023-02-11T17:22:35+00:00

This feature was only partly implemented and serves no current purpose.
Drop it.

Signed-off-by: Simon Glass

trace: Update proftool to use new binary format

2023-02-11T17:22:35+00:00

The old text format is not much used anymore. Instead a new trace-cmd tool
has introduced a binary format for trace records.

Add support for generating this format. This involves removing the old
text format, adding various helpers for the new format and adjusting the
code to use an output file instead of stdout.

Signed-off-by: Simon Glass