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4d6319289e
RISCV ELF use mapping symbols with special names $x, $d to identify regions of RISCV code or code with different ISAs[1]. These symbols don't identify functions, so will confuse the perf output. The patch filters out these symbols at load time, similar to "4886f2ca perf symbols: Ignore mapping symbols on aarch64". [1] https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/ master/riscv-elf.adoc#mapping-symbol Signed-off-by: Haibo Xu <haibo1.xu@intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20250409025202.201046-1-haibo1.xu@intel.com Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>