tracing: Generate undef symbols allowlist for simple_ring_buffer

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Compiler and tooling-generated symbols are difficult to maintain
across all supported architectures. Make the allowlist more robust by
replacing the harcoded list with a mechanism that automatically detects
these symbols.

This mechanism generates a C function designed to trigger common
compiler-inserted symbols.

Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260316092845.3367411-1-vdonnefort@google.com
[maz: added __msan prefix to allowlist as pointed out by Arnd]
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Vincent Donnefort 2026-03-16 09:28:45 +00:00 • committed by Marc Zyngier

parent 9e5dd49de5

commit 1211907ac0

1 changed files with 38 additions and 8 deletions

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kernel/trace/Makefile

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