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Steven Rostedt
62a695f03e
[ Upstream commitdc208c69c0] ARM 64 uses -fpatchable-function-entry=4,2 which adds padding before the function and the addresses in the mcount_loc point there instead of the function entry that is returned by nm. In order to find a function from nm to make sure it's not an unused weak function, the entries in the mcount_loc section needs to match the entries from nm. Since it can be an instruction before the entry, add a before_func variable that ARM 64 can set to 8, and if the mcount_loc entry is within 8 bytes of the nm function entry, then it will be considered a match. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: "Arnd Bergmann" <arnd@arndb.de> Cc: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/20250225182054.815536219@goodmis.org Fixes:ef378c3b82("scripts/sorttable: Zero out weak functions in mcount_loc table") Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@crowdstrike.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>