From 1ddc96bd42daeeb58f66c9515e506f245ccb00c6 Mon Sep 17 00:00:00 2001 From: Tiezhu Yang Date: Thu, 4 Feb 2021 11:35:22 +0800 Subject: MIPS: kernel: Support extracting off-line stack traces from user-space with perf Add perf_event_mips_regs/perf_reg_value/perf_reg_validate to support features HAVE_PERF_REGS/HAVE_PERF_USER_STACK_DUMP in kernel. [ayan@wavecomp.com: Repick this patch for unwinding userstack backtrace by perf and libunwind on MIPS based CPU.] [ralf@linux-mips.org: Add perf_get_regs_user() which is required after 'commit 88a7c26af8da ("perf: Move task_pt_regs sampling into arch code")'.] [yangtiezhu@loongson.cn: Fix build error about perf_get_regs_user() after commit 76a4efa80900 ("perf/arch: Remove perf_sample_data::regs_user_copy"), and also separate the original patches into two parts (MIPS kernel and perf tools) to merge easily.] The original patches: https://lore.kernel.org/patchwork/patch/1126521/ https://lore.kernel.org/patchwork/patch/1126520/ Signed-off-by: David Daney Signed-off-by: Ralf Baechle Signed-off-by: Archer Yan Signed-off-by: Tiezhu Yang Signed-off-by: Thomas Bogendoerfer --- arch/mips/kernel/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/mips/kernel/Makefile') diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index 2303a5868c14..a893ea041ef5 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -103,7 +103,7 @@ obj-$(CONFIG_MIPSR2_TO_R6_EMULATOR) += mips-r2-to-r6-emul.o CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -x c /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi) -obj-$(CONFIG_PERF_EVENTS) += perf_event.o +obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_regs.o obj-$(CONFIG_HW_PERF_EVENTS) += perf_event_mipsxx.o obj-$(CONFIG_JUMP_LABEL) += jump_label.o -- cgit v1.2.3