diff options
Diffstat (limited to 'meta-toradex-extras/recipes/linux/linux-toradex-fsl/ARM-perf-wire-up-perf_regs-and-unwind-support-for-AR.patch')
| -rw-r--r-- | meta-toradex-extras/recipes/linux/linux-toradex-fsl/ARM-perf-wire-up-perf_regs-and-unwind-support-for-AR.patch | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/meta-toradex-extras/recipes/linux/linux-toradex-fsl/ARM-perf-wire-up-perf_regs-and-unwind-support-for-AR.patch b/meta-toradex-extras/recipes/linux/linux-toradex-fsl/ARM-perf-wire-up-perf_regs-and-unwind-support-for-AR.patch new file mode 100644 index 00000000..1e497c6e --- /dev/null +++ b/meta-toradex-extras/recipes/linux/linux-toradex-fsl/ARM-perf-wire-up-perf_regs-and-unwind-support-for-AR.patch @@ -0,0 +1,172 @@ +From 8abd7519c1fd2b6ae35eddbb41f93f44d3886000 Mon Sep 17 00:00:00 2001 +From: Will Deacon <will.deacon@arm.com> +Date: Thu, 26 Sep 2013 12:36:36 +0100 +Subject: [PATCH] ARM: perf: wire up perf_regs and unwind support for ARM + +This patch hooks in the perf_regs and libunwind code for ARM. + +B2Qt: Backported for 3.10 kernel + +Cc: Jean Pihet <jean.pihet@linaro.org> +Signed-off-by: Will Deacon <will.deacon@arm.com> +--- + tools/perf/Makefile | 6 +++- + tools/perf/arch/arm/Makefile | 3 ++ + tools/perf/arch/arm/include/perf_regs.h | 54 +++++++++++++++++++++++++++++++++ + tools/perf/arch/arm/util/unwind.c | 48 +++++++++++++++++++++++++++++ + 4 files changed, 110 insertions(+), 1 deletion(-) + create mode 100644 tools/perf/arch/arm/include/perf_regs.h + create mode 100644 tools/perf/arch/arm/util/unwind.c + +diff --git a/tools/perf/Makefile b/tools/perf/Makefile +index b0f164b..f8fdad5 100644 +--- a/tools/perf/Makefile ++++ b/tools/perf/Makefile +@@ -87,6 +87,10 @@ ifeq ($(ARCH),x86_64) + NO_PERF_REGS := 0 + LIBUNWIND_LIBS = -lunwind -lunwind-x86_64 + endif ++ifeq ($(ARCH),arm) ++ NO_PERF_REGS := 0 ++ LIBUNWIND_LIBS = -lunwind -lunwind-arm ++endif + + # Treat warnings as errors unless directed not to + ifneq ($(WERROR),0) +@@ -607,7 +611,7 @@ endif # SOURCE_LIBELF + endif # NO_LIBELF + + # There's only x86 (both 32 and 64) support for CFI unwind so far +-ifneq ($(ARCH),x86) ++ifeq ($(LIBUNWIND_LIBS),) + NO_LIBUNWIND := 1 + endif + +diff --git a/tools/perf/arch/arm/Makefile b/tools/perf/arch/arm/Makefile +index 15130b5..fe9b61e 100644 +--- a/tools/perf/arch/arm/Makefile ++++ b/tools/perf/arch/arm/Makefile +@@ -2,3 +2,6 @@ ifndef NO_DWARF + PERF_HAVE_DWARF_REGS := 1 + LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o + endif ++ifndef NO_LIBUNWIND ++LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/unwind.o ++endif +diff --git a/tools/perf/arch/arm/include/perf_regs.h b/tools/perf/arch/arm/include/perf_regs.h +new file mode 100644 +index 0000000..2a1cfde +--- /dev/null ++++ b/tools/perf/arch/arm/include/perf_regs.h +@@ -0,0 +1,54 @@ ++#ifndef ARCH_PERF_REGS_H ++#define ARCH_PERF_REGS_H ++ ++#include <stdlib.h> ++#include "../../util/types.h" ++#include <asm/perf_regs.h> ++ ++#define PERF_REGS_MASK ((1ULL << PERF_REG_ARM_MAX) - 1) ++#define PERF_REG_IP PERF_REG_ARM_PC ++#define PERF_REG_SP PERF_REG_ARM_SP ++ ++static inline const char *perf_reg_name(int id) ++{ ++ switch (id) { ++ case PERF_REG_ARM_R0: ++ return "r0"; ++ case PERF_REG_ARM_R1: ++ return "r1"; ++ case PERF_REG_ARM_R2: ++ return "r2"; ++ case PERF_REG_ARM_R3: ++ return "r3"; ++ case PERF_REG_ARM_R4: ++ return "r4"; ++ case PERF_REG_ARM_R5: ++ return "r5"; ++ case PERF_REG_ARM_R6: ++ return "r6"; ++ case PERF_REG_ARM_R7: ++ return "r7"; ++ case PERF_REG_ARM_R8: ++ return "r8"; ++ case PERF_REG_ARM_R9: ++ return "r9"; ++ case PERF_REG_ARM_R10: ++ return "r10"; ++ case PERF_REG_ARM_FP: ++ return "fp"; ++ case PERF_REG_ARM_IP: ++ return "ip"; ++ case PERF_REG_ARM_SP: ++ return "sp"; ++ case PERF_REG_ARM_LR: ++ return "lr"; ++ case PERF_REG_ARM_PC: ++ return "pc"; ++ default: ++ return NULL; ++ } ++ ++ return NULL; ++} ++ ++#endif /* ARCH_PERF_REGS_H */ +diff --git a/tools/perf/arch/arm/util/unwind.c b/tools/perf/arch/arm/util/unwind.c +new file mode 100644 +index 0000000..da3dc95 +--- /dev/null ++++ b/tools/perf/arch/arm/util/unwind.c +@@ -0,0 +1,48 @@ ++ ++#include <errno.h> ++#include <libunwind.h> ++#include "perf_regs.h" ++#include "../../util/unwind.h" ++ ++int unwind__arch_reg_id(int regnum) ++{ ++ switch (regnum) { ++ case UNW_ARM_R0: ++ return PERF_REG_ARM_R0; ++ case UNW_ARM_R1: ++ return PERF_REG_ARM_R1; ++ case UNW_ARM_R2: ++ return PERF_REG_ARM_R2; ++ case UNW_ARM_R3: ++ return PERF_REG_ARM_R3; ++ case UNW_ARM_R4: ++ return PERF_REG_ARM_R4; ++ case UNW_ARM_R5: ++ return PERF_REG_ARM_R5; ++ case UNW_ARM_R6: ++ return PERF_REG_ARM_R6; ++ case UNW_ARM_R7: ++ return PERF_REG_ARM_R7; ++ case UNW_ARM_R8: ++ return PERF_REG_ARM_R8; ++ case UNW_ARM_R9: ++ return PERF_REG_ARM_R9; ++ case UNW_ARM_R10: ++ return PERF_REG_ARM_R10; ++ case UNW_ARM_R11: ++ return PERF_REG_ARM_FP; ++ case UNW_ARM_R12: ++ return PERF_REG_ARM_IP; ++ case UNW_ARM_R13: ++ return PERF_REG_ARM_SP; ++ case UNW_ARM_R14: ++ return PERF_REG_ARM_LR; ++ case UNW_ARM_R15: ++ return PERF_REG_ARM_PC; ++ default: ++ pr_err("unwind: invalid reg id %d\n", regnum); ++ return -EINVAL; ++ } ++ ++ return -EINVAL; ++} +-- +1.9.1 + |