perf record: Add support for arch_sdt_arg_parse_op() on s390

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commit e5e66adfe4 ("perf regs: Remove __weak attributive arch_sdt_arg_parse_op() function")
removes arch_sdt_arg_parse_op() functions and reveals missing s390 support.
The following warning is printed:

  Unknown ELF machine 22, standard arguments parse will be skipped.

ELF machine 22 is the EM_S390 host. This happens with command
  # ./perf record -v -- stress-ng -t 1s --matrix 0
when the event is not specified.

Add s390 specific __perf_sdt_arg_parse_op_s390() function to support
-architecture calls to arch_sdt_arg_parse_op() for s390.
The warning disappears.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Tested-by: Jan Polensky <japo@linux.ibm.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

...

This commit is contained in:

Thomas Richter 2026-03-19 09:47:54 +01:00 • committed by Namhyung Kim

parent 5c980ab238

commit 46a009cf0d

3 changed files with 82 additions and 0 deletions

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78

tools/perf/util/perf-regs-arch/perf_regs_s390.c

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3

tools/perf/util/perf_regs.c

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1

tools/perf/util/perf_regs.h

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