linux-stable.git/tools/perf/util/scripting-engines, branch linux-5.14.y

perf script python: Fix buffer size to report iregs in perf script

2021-07-07T14:15:44+00:00

Commit 48a1f565261d2ab1 ("perf script python: Add more PMU fields to
event handler dict") added functionality to report fields like weight,
iregs, uregs etc via perf report.  That commit predefined buffer size to
512 bytes to print those fields.

But in PowerPC, since we added extended regs support in:

  068aeea3773a6f4c ("perf powerpc: Support exposing Performance Monitor Counter SPRs as part of extended regs")
  d735599a069f6936 ("powerpc/perf: Add extended regs support for power10 platform")

Now iregs can carry more bytes of data and this predefined buffer size
can result to data loss in perf script output.

This patch resolves this issue by making the buffer size dynamic, based
on the number of registers needed to print. It also changes the
regs_map() return type from int to void, as it is not being used by the
set_regs_in_dict(), its only caller.

Fixes: 068aeea3773a6f4c ("perf powerpc: Support exposing Performance Monitor Counter SPRs as part of extended regs")
Signed-off-by: Kajol Jain 
Tested-by: Nageswara R Sastry 
Cc: Athira Jajeev 
Cc: Jiri Olsa 
Cc: Madhavan Srinivasan 
Cc: Paul Clarke 
Cc: Ravi Bangoria 
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lore.kernel.org/lkml/20210628062341.155839-1-kjain@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting python: Assign perf_script_context

2021-06-01T13:03:33+00:00

The scripting_context pointer itself does not change and nor does it need
to. Put it directly into the script as a variable at the start so it does
not have to be passed on each call into the script.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210530192308.7382-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting: Add perf_session to scripting_context

2021-06-01T13:03:17+00:00

This is preparation for allowing a script to set the itrace options
for the session if they have not already been set.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210530192308.7382-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting: Add scripting_context__update()

2021-06-01T13:03:02+00:00

Move scripting_context update to a separate function and add
the arguments of ->process_event() to it.

This prepares the way for adding more methods to the perf_trace_context
module, by providing the context information that they will need.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210530192308.7382-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting python: Add auxtrace error

2021-05-25T13:07:17+00:00

Add auxtrace_error to general python scripting.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210525095112.1399-10-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting python: Add context switch

2021-05-25T13:07:17+00:00

Add context_switch to general python scripting.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210525095112.1399-9-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting python: Add cpumode

2021-05-25T13:07:17+00:00

Add cpumode to python scripting.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210525095112.1399-8-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting python: Add IPC

2021-05-25T13:07:17+00:00

Add IPC to python scripting.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210525095112.1399-7-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting python: Add sample flags

2021-05-25T13:07:17+00:00

Add sample flags to python scripting.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210525095112.1399-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf scripting python: Add 'addr_location' for 'addr'

2021-05-25T13:07:17+00:00

If sample addr correlates to a symbol, add  "addr_dso", "addr_symbol", and
"addr_symoff" to python scripting.

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: https://lore.kernel.org/r/20210525095112.1399-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo