From: Eugene Loh <eugene.loh@oracle.com>
To: jolsa@kernel.org
Cc: song@kernel.org, ast@kernel.org, rostedt@goodmis.org,
linux-kernel@vger.kernel.org,
Kris Van Hees <kris.van.hees@oracle.com>
Subject: aarch64 missing from Revert "perf/x86: Always store regs->ip in perf_callchain_kernel()"
Date: Mon, 12 Jan 2026 01:17:53 -0500 [thread overview]
Message-ID: <a38fed68-67bc-98ce-8e12-743342121ae3@oracle.com> (raw)
Thanks for reverting that patch:
https://lore.kernel.org/r/20251104215405.168643-2-jolsa@kernel.org
https://github.com/torvalds/linux/commit/6d08340d1e354787d6c65a8c3cdd4d41ffb8a5ed
Revert "perf/x86: Always store regs->ip in perf_callchain_kernel()"
This reverts commit 83f44ae.
But it seems to me that this issue is not specific to x86. For example,
here is aarch64, using a 6.18 kernel:
# bpftrace -e 'tracepoint:sched:sched_process_exec {
print(kstack()); }'
perf_trace_sched_process_exec+16
perf_trace_sched_process_exec+16
__traceiter_sched_process_exec+80
exec_binprm+908
bprm_execve.part.0+464
bprm_execve+68
do_execveat_common.isra.0+456
__arm64_sys_execve+76
invoke_syscall+112
el0_svc_common.constprop.0+264
do_el0_svc+36
el0_svc+56
el0t_64_sync_handler+184
el0t_64_sync+412
The leaf IP is repeated. Are corresponding changes needed for
processors other than just x86?
next reply other threads:[~2026-01-12 6:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-12 6:17 Eugene Loh [this message]
2026-01-13 22:18 ` Jiri Olsa
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