Defined in 4 files as a struct:
- arch/arm/kernel/perf_callchain.c, line 23 (as a struct)
- arch/arm/oprofile/common.c, line 80 (as a struct)
- arch/arm64/kernel/perf_callchain.c, line 13 (as a struct)
- arch/nds32/include/asm/stacktrace.h, line 23 (as a struct)