[PATCH V10 0/4] perf/powerpc: Add ability to sample intr machine state in powerpc
This short patch series adds the ability to sample the interrupted machine state for each hardware sample. To test this patchset, Eg: $ perf record -I? # list supported registers output: available registers: gpr0 gpr1 gpr2 gpr3 gpr4 gpr5 gpr6 gpr7 gpr8 gpr9 gpr10 gpr11 gpr12 gpr13 gpr14 gpr15 gpr16 gpr17 gpr18 gpr19 gpr20 gpr21 gpr22 gpr23 gpr24 gpr25 gpr26 gpr27 gpr28 gpr29 gpr30 gpr31 nip msr orig_r3 ctr link xer ccr trap dar dsisr usage: perf record [] [] or: perf record [] -- [] -I, --intr-regs[=] sample selected machine registers on interrupt, use -I ? to list register names $ perf record -I ls # record machine state at interrupt $ perf script -D # read the perf.data file Samplfdoutput obtained for this patchset/ output looks like as follows: 178329381464 0x138 [0x180]: PERF_RECORD_SAMPLE(IP, 0x1): 7803/7803: 0xc000fd9c period: 1 addr: 0 ... intr regs: mask 0x3ff ABI 64-bit gpr0 0xc01a6420 gpr1 0xc01e4df039b0 gpr2 0xc0cdd100 gpr3 0x1 gpr4 0xc01e4a96d000 gpr5 0x29854255ba gpr6 0xc00ffa3050b8 gpr7 0x0 gpr8 0x0 gpr9 0x0 gpr10 0x0 gpr11 0x0 gpr12 0x24022822 gpr13 0xcfe03000 gpr14 0x0 gpr15 0xc0d763f8 gpr16 0x0 gpr17 0xc01e4ddcf000 gpr18 0x0 gpr19 0xc00ffa305000 gpr20 0xc01e4df038c0 gpr21 0xc01e40ed7a00 gpr22 0xc00aa28c gpr23 0xc0cdd100 gpr24 0x0 gpr25 0xc0cdd100 gpr26 0xc01e4df038b0 gpr27 0xfeae gpr28 0xc01e4df03880 gpr29 0xc0dce900 gpr30 0xc01e4df03890 gpr31 0xc01e355c7a30 nip 0xc01a62d8 msr 0x90009032 orig_r3 0xc01a6320 ctr 0xc00a7be0 link 0xc01a6428 xer 0x0 ccr 0x24022888 trap 0xf01 dar 0xc01e40ed7a00 dsisr 0x3000c006004 ... thread: :7803:7803 .. dso: /root/.debug/.build-id/d0/eb47b06c0d294143af13c50616f638c2d88658 :7803 7803 178.329381: 1 cycles: c000fd9c .arch_local_irq_restore (/boot/vmlinux) Changes from V9: - Changed the name displayed for link register from "lnk" to "link" in tools/perf/arch/powerpc/include/perf_regs.h changes from V8: - Corrected the indentation issue in the Makefile mentioned in 3rd patch Changes from V7: - Addressed the new line issue in 3rd patch. Changes from V6: - Corrected the typo in patch tools/perf: Map the ID values with register names. ie #define PERF_REG_SP PERF_REG_POWERPC_R1 should be #define PERF_REG_SP PERF_REG_POWERPC_GPR1 Changes from V5: - Enabled perf_sample_regs_user also in this patch set.Functions added in arch/powerpc/perf/perf_regs.c - Added Maddy's patch to this patchset for enabling -I? option which will list the supported register names. Changes from V4: - Removed the softe and MQ from all patches - Switch case is replaced with an array in the 3rd patch Changes from V3: - Addressed the comments by Sukadev regarding the nits in the descriptions. - Modified the subject of first patch. - Included the sample output in the 3rd patch also. Changes from V2: - tools/perf/config/Makefile is moved to the patch tools/perf. - The patchset is reordered. - perf_regs_load() function is used for the dwarf unwind test.Since it is not required here, it is removed from tools/perf/arch/powerpc/include/perf_regs.h - PERF_REGS_POWERPC_RESULT is removed. Changes from V1: - Solved the name missmatch issue in the from and signed-off field of the patch series. - Added necessary comments in the 3rd patch ie perf/powerpc ,as suggested by Maddy. Anju T (3): perf/powerpc: assign an id to each powerpc register perf/powerpc: add support for sampling intr machine state tools/perf: Map the ID values with register names Madhavan Srinivasan (1): tool/perf: Add sample_reg_mask to include all perf_regs regs arch/powerpc/Kconfig| 1 + arch/powerpc/include/uapi/asm/perf_regs.h | 49 + arch/powerpc/perf/Makefile | 1 + arch/powerpc/perf/perf_regs.c | 85 + tools/perf/arch/powerpc/include/perf_regs.h | 64 ++ tools/perf/arch/powerpc/util/Build | 1 + tools/perf/arch/powerpc/util/perf_regs.c| 48 tools/perf/config/Makefile | 5 ++ 8 files changed, 254 insertions(+) create mode 100644 arch/powerpc/include/uapi/asm/perf_regs.h create mode 100644 arch/powerpc/perf/perf_regs.c create mode 100644 tools/perf/arch/powerpc/include/perf_regs.h create mode 100644 tools/perf/arch/powerpc/util/perf_regs.c -- 2.1.0 ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
[PATCH V10 0/4] perf/powerpc: Add ability to sample intr machine state in powerpc
This short patch series adds the ability to sample the interrupted machine state for each hardware sample. To test this patchset, Eg: $ perf record -I? # list supported registers output: available registers: gpr0 gpr1 gpr2 gpr3 gpr4 gpr5 gpr6 gpr7 gpr8 gpr9 gpr10 gpr11 gpr12 gpr13 gpr14 gpr15 gpr16 gpr17 gpr18 gpr19 gpr20 gpr21 gpr22 gpr23 gpr24 gpr25 gpr26 gpr27 gpr28 gpr29 gpr30 gpr31 nip msr orig_r3 ctr link xer ccr trap dar dsisr usage: perf record [] [] or: perf record [] -- [] -I, --intr-regs[=] sample selected machine registers on interrupt, use -I ? to list register names $ perf record -I ls # record machine state at interrupt $ perf script -D # read the perf.data file Samplfdoutput obtained for this patchset/ output looks like as follows: 178329381464 0x138 [0x180]: PERF_RECORD_SAMPLE(IP, 0x1): 7803/7803: 0xc000fd9c period: 1 addr: 0 ... intr regs: mask 0x3ff ABI 64-bit gpr0 0xc01a6420 gpr1 0xc01e4df039b0 gpr2 0xc0cdd100 gpr3 0x1 gpr4 0xc01e4a96d000 gpr5 0x29854255ba gpr6 0xc00ffa3050b8 gpr7 0x0 gpr8 0x0 gpr9 0x0 gpr10 0x0 gpr11 0x0 gpr12 0x24022822 gpr13 0xcfe03000 gpr14 0x0 gpr15 0xc0d763f8 gpr16 0x0 gpr17 0xc01e4ddcf000 gpr18 0x0 gpr19 0xc00ffa305000 gpr20 0xc01e4df038c0 gpr21 0xc01e40ed7a00 gpr22 0xc00aa28c gpr23 0xc0cdd100 gpr24 0x0 gpr25 0xc0cdd100 gpr26 0xc01e4df038b0 gpr27 0xfeae gpr28 0xc01e4df03880 gpr29 0xc0dce900 gpr30 0xc01e4df03890 gpr31 0xc01e355c7a30 nip 0xc01a62d8 msr 0x90009032 orig_r3 0xc01a6320 ctr 0xc00a7be0 link 0xc01a6428 xer 0x0 ccr 0x24022888 trap 0xf01 dar 0xc01e40ed7a00 dsisr 0x3000c006004 ... thread: :7803:7803 .. dso: /root/.debug/.build-id/d0/eb47b06c0d294143af13c50616f638c2d88658 :7803 7803 178.329381: 1 cycles: c000fd9c .arch_local_irq_restore (/boot/vmlinux) Changes from V9: - Changed the name displayed for link register from "lnk" to "link" in tools/perf/arch/powerpc/include/perf_regs.h changes from V8: - Corrected the indentation issue in the Makefile mentioned in 3rd patch Changes from V7: - Addressed the new line issue in 3rd patch. Changes from V6: - Corrected the typo in patch tools/perf: Map the ID values with register names. ie #define PERF_REG_SP PERF_REG_POWERPC_R1 should be #define PERF_REG_SP PERF_REG_POWERPC_GPR1 Changes from V5: - Enabled perf_sample_regs_user also in this patch set.Functions added in arch/powerpc/perf/perf_regs.c - Added Maddy's patch to this patchset for enabling -I? option which will list the supported register names. Changes from V4: - Removed the softe and MQ from all patches - Switch case is replaced with an array in the 3rd patch Changes from V3: - Addressed the comments by Sukadev regarding the nits in the descriptions. - Modified the subject of first patch. - Included the sample output in the 3rd patch also. Changes from V2: - tools/perf/config/Makefile is moved to the patch tools/perf. - The patchset is reordered. - perf_regs_load() function is used for the dwarf unwind test.Since it is not required here, it is removed from tools/perf/arch/powerpc/include/perf_regs.h - PERF_REGS_POWERPC_RESULT is removed. Changes from V1: - Solved the name missmatch issue in the from and signed-off field of the patch series. - Added necessary comments in the 3rd patch ie perf/powerpc ,as suggested by Maddy. Anju T (3): perf/powerpc: assign an id to each powerpc register perf/powerpc: add support for sampling intr machine state tools/perf: Map the ID values with register names Madhavan Srinivasan (1): tool/perf: Add sample_reg_mask to include all perf_regs regs arch/powerpc/Kconfig| 1 + arch/powerpc/include/uapi/asm/perf_regs.h | 49 + arch/powerpc/perf/Makefile | 1 + arch/powerpc/perf/perf_regs.c | 85 + tools/perf/arch/powerpc/include/perf_regs.h | 64 ++ tools/perf/arch/powerpc/util/Build | 1 + tools/perf/arch/powerpc/util/perf_regs.c| 48 tools/perf/config/Makefile | 5 ++ 8 files changed, 254 insertions(+) create mode 100644 arch/powerpc/include/uapi/asm/perf_regs.h create mode 100644 arch/powerpc/perf/perf_regs.c create mode 100644 tools/perf/arch/powerpc/include/perf_regs.h create mode 100644 tools/perf/arch/powerpc/util/perf_regs.c -- 2.1.0 ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
