u-boot.git/lib/trace.c, branch master

lib/trace: drop volatile qualifier from "save gd" variables

2025-06-13T22:57:15+00:00

The global gd pointer is no longer volatile-qualified, so drop that
qualifier from these bookkeeping variables.

Signed-off-by: Rasmus Villemoes

Merge patch series "Add 'trace wipe'"

2025-01-01T16:40:33+00:00

Jerome Forissier  says:

This short series adds the 'trace wipe' command which clears the trace
buffer, allowing to re-start a capture from scratch.

Link: https://lore.kernel.org/r/cover.1734093566.git.jerome.forissier@linaro.org

trace: add support for 'trace wipe'

2025-01-01T01:00:46+00:00

Implement a 'trace wipe' command to delete the currently accumulated
trace data. This comes handy when someone needs to trace a particular
command. For example:

  => trace pause; trace wipe
  => trace resume; dhcp; trace pause
  => trace stats
  => trace calls 0x02100000 0x10000000
  => tftpput $profbase $profoffset 192.168.0.16:trace.bin

Signed-off-by: Jerome Forissier 
Reviewed-by: Ilias Apalodimas

lib: Remove inclusion from these files

2023-12-21T13:54:37+00:00

After some header file cleanups to add missing include files, remove
common.h from all files in the lib directory. This primarily means just
dropping the line but in a few cases we need to add in other header
files now.

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

treewide: unify the linker symbol reference format

2023-08-09T13:21:42+00:00

Now all linker symbols are declared as type char[]. Though we can
reference the address via both the array name 'var' and its address
'&var'. It's better to unify them to avoid confusing developers.
This patch converts all '&var' linker symbol refrences to the most
commonly used format 'var'.

Signed-off-by: Shiji Yang 
Reviewed-by: Tom Rini

trace: Detect an infinite loop

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

If something is wrong with a board's timer function such that it calls
functions not marked with notrace, U-Boot will hang.

Detect this, print a message and disable the trace.

Signed-off-by: Simon Glass

trace: Correct the relocation handover with buffer overflow

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

When the early trace buffer overflows it leaves a gap in the trace buffer
between where the actual data finished and where it would have finished if
there were enough buffer space. This results in corrupted output.

Adjust the logic to resolve this and add a message when the buffer
overflows.

Signed-off-by: Simon Glass

trace: Show a few more stats about tracing

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

Add a few more useful items into the output. Update the buffers to use hex
consistently.

Signed-off-by: Simon Glass

trace: Track the minimum stack depth

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

The trace does not necessarily start at the top level, so we can see it
go negative. Track this so that we can show an accurate value for the
stack depth.

Signed-off-by: Simon Glass

trace: Reduce the number of function sites

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

Given that the compiler adds two function calls into each function, the
current spacing is overkill. Drop it down to 16 bytes per function, which
is still plenty. This saves some space in the trace buffer.

Also move the calculation into a function, so it is common code. Add a
check for gd->mon_len being unset, which breaks tracing.

Signed-off-by: Simon Glass