Re: [PATCH v3 11/12] perf disasm: Refactor arch__find and initialization of arch structs

[Arnaldo Carvalho de Melo <acme@kernel.org>]

On Thu, Jan 22, 2026 at 01:35:15PM -0800, Ian Rogers wrote:
> Switch arch__find to using an ELF machine number rather than a
> string. Rather than an array of fixed size arch structs turn the init
> functions into new functions indexed by the ELF machine they
> correspond to. This allows data to be stored with a struct arch with
> the container_of trick, so the priv variable can be removed. Switch to
> using the thread to find the arch rather than the evsel as the evsel
> only has limited notions of the running thread upon which disassembly
> is performed. Factor out the e_machine and e_flags into their own
> struct to make them easier to pass around.

Added:

⬢ [acme@toolbx perf-tools-next]$ git diff
diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c
index 46740d1e58580004..4f60726247d62764 100644
--- a/tools/perf/util/disasm.c
+++ b/tools/perf/util/disasm.c
@@ -1,5 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0-only
 #include <ctype.h>
+#include <elf.h>
+#ifndef EF_CSKY_ABIMASK
+#define EF_CSKY_ABIMASK        0XF0000000
+#endif
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>


With:

    [ Include elf.h for EM_CSKY and friends and also conditionally define EM_CSKY_ABIMASK for old distros ]