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perf thread-stack: Switch thread_stack__init() to use e_machine

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The architecture type is used to set the retpoline state.

Rather than use the arch string switch to using the ELF machine that's
readily available within the thread.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shimin Guo <shimin.guo@skydio.com>
Cc: Yujie Liu <yujie.liu@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers
2026-01-26 14:05:50 -08:00
committed by Arnaldo Carvalho de Melo
parent f33e7aa42e
commit 4b870f62c5
1 changed files with 2 additions and 2 deletions
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4
tools/perf/util/thread-stack.c
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@@ -157,10 +157,10 @@ static int thread_stack__init(struct thread_stack *ts, struct thread *thread,
if (thread__maps(thread) && maps__machine(thread__maps(thread))) {
struct machine *machine = maps__machine(thread__maps(thread));
const char *arch = perf_env__arch(machine->env);
uint16_t e_machine = thread__e_machine(thread, machine, /*e_flags=*/NULL);
ts->kernel_start = machine__kernel_start(machine);
if (!strcmp(arch, "x86"))
if (e_machine == EM_X86_64 || e_machine == EM_386)
ts->rstate = X86_RETPOLINE_POSSIBLE;
} else {
ts->kernel_start = 1ULL << 63;