sp_start 122 arch/xtensa/kernel/stacktrace.c unsigned long sp_start, sp_end; sp_start 126 arch/xtensa/kernel/stacktrace.c sp_start = a1 & ~(THREAD_SIZE - 1); sp_start 127 arch/xtensa/kernel/stacktrace.c sp_end = sp_start + THREAD_SIZE; sp_start 135 arch/xtensa/kernel/stacktrace.c while (a1 > sp_start && a1 < sp_end && depth--) { sp_start 157 arch/xtensa/kernel/stacktrace.c sp_start = a1;