| entry-ftrace.S (e4fe196642678565766815d99ab98a3a32d72dd4) | entry-ftrace.S (5c176aff5b5a7027840c37da9d48a8f9cedb08b9) |
|---|---|
| 1/* 2 * arch/arm64/kernel/entry-ftrace.S 3 * 4 * Copyright (C) 2013 Linaro Limited 5 * Author: AKASHI Takahiro <takahiro.akashi@linaro.org> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as --- 193 unchanged lines hidden (view full) --- 202 203 mcount_exit 204ENDPROC(ftrace_graph_caller) 205 206/* 207 * void return_to_handler(void) 208 * 209 * Run ftrace_return_to_handler() before going back to parent. | 1/* 2 * arch/arm64/kernel/entry-ftrace.S 3 * 4 * Copyright (C) 2013 Linaro Limited 5 * Author: AKASHI Takahiro <takahiro.akashi@linaro.org> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as --- 193 unchanged lines hidden (view full) --- 202 203 mcount_exit 204ENDPROC(ftrace_graph_caller) 205 206/* 207 * void return_to_handler(void) 208 * 209 * Run ftrace_return_to_handler() before going back to parent. |
| 210 * @fp is checked against the value passed by ftrace_graph_caller() 211 * only when HAVE_FUNCTION_GRAPH_FP_TEST is enabled. | 210 * @fp is checked against the value passed by ftrace_graph_caller(). |
| 212 */ 213ENTRY(return_to_handler) 214 save_return_regs 215 mov x0, x29 // parent's fp 216 bl ftrace_return_to_handler// addr = ftrace_return_to_hander(fp); 217 mov x30, x0 // restore the original return address 218 restore_return_regs 219 ret 220END(return_to_handler) 221#endif /* CONFIG_FUNCTION_GRAPH_TRACER */ | 211 */ 212ENTRY(return_to_handler) 213 save_return_regs 214 mov x0, x29 // parent's fp 215 bl ftrace_return_to_handler// addr = ftrace_return_to_hander(fp); 216 mov x30, x0 // restore the original return address 217 restore_return_regs 218 ret 219END(return_to_handler) 220#endif /* CONFIG_FUNCTION_GRAPH_TRACER */ |