From: Mao Han <han_mao@c-sky.com>
To: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org,
Mao Han <han_mao@c-sky.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Greentime Hu <green.hu@gmail.com>,
Palmer Dabbelt <palmer@sifive.com>,
Christoph Hellwig <hch@lst.de>, Guo Ren <guoren@kernel.org>
Subject: [PATCH V7 0/2] riscv: Add perf callchain support
Date: Thu, 5 Sep 2019 11:46:34 +0800 [thread overview]
Message-ID: <cover.1567653632.git.han_mao@c-sky.com> (raw)
This patchset adds perf callchain(FP/DWARF) support for RISC-V.
It comes from the csky version callchain support with some
slight modifications. The patchset base on Linux 5.3-rc6.
The patchset has some 'checkpatch.pl --strict' warnings:
WARNING: Use #include <linux/perf_regs.h> instead of <asm/perf_regs.h>
#141: FILE: tools/perf/arch/riscv/include/perf_regs.h:9:
+#include <asm/perf_regs.h>
CHECK: Avoid CamelCase: <Dwfl_Thread>
#329: FILE: tools/perf/arch/riscv/util/unwind-libdw.c:9:
+bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
CHECK: Avoid CamelCase: <Dwarf_Word>
#333: FILE: tools/perf/arch/riscv/util/unwind-libdw.c:13:
+ Dwarf_Word dwarf_regs[32];
As all the other Linux architectures use asm/perf_regs.h directly and
get these camelcases, I didn't try to fix them.
Changes since v6:
- add "WITH Linux-syscall-note" for uapi headers.
Changes since v5:
- use walk_stackframe from stacktrace.c to handle
kernel callchain unwinding(fix invalid mem access)
Changes since v4:
- Add missing PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
verified with extra CFLAGS(-Wall -Werror)
Changes since v3:
- Add more strict check for unwind_frame_kernel
- update for kernel 5.3
Changes since v2:
- fix inconsistent comment
- force to build kernel with -fno-omit-frame-pointer if perf
event is enabled
Changes since v1:
- simplify implementation and code convention
Signed-off-by: Mao Han <han_mao@c-sky.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: linux-riscv <linux-riscv@lists.infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Guo Ren <guoren@kernel.org>
Mao Han (2):
riscv: Add support for perf registers sampling
riscv: Add support for libdw
arch/riscv/Kconfig | 2 +
arch/riscv/include/uapi/asm/perf_regs.h | 42 ++++++++++++
arch/riscv/kernel/Makefile | 1 +
arch/riscv/kernel/perf_regs.c | 44 ++++++++++++
tools/arch/riscv/include/uapi/asm/perf_regs.h | 42 ++++++++++++
tools/perf/Makefile.config | 6 +-
tools/perf/arch/riscv/Build | 1 +
tools/perf/arch/riscv/Makefile | 4 ++
tools/perf/arch/riscv/include/perf_regs.h | 96 +++++++++++++++++++++++++++
tools/perf/arch/riscv/util/Build | 2 +
tools/perf/arch/riscv/util/dwarf-regs.c | 72 ++++++++++++++++++++
tools/perf/arch/riscv/util/unwind-libdw.c | 57 ++++++++++++++++
12 files changed, 368 insertions(+), 1 deletion(-)
create mode 100644 arch/riscv/include/uapi/asm/perf_regs.h
create mode 100644 arch/riscv/kernel/perf_regs.c
create mode 100644 tools/arch/riscv/include/uapi/asm/perf_regs.h
create mode 100644 tools/perf/arch/riscv/Build
create mode 100644 tools/perf/arch/riscv/Makefile
create mode 100644 tools/perf/arch/riscv/include/perf_regs.h
create mode 100644 tools/perf/arch/riscv/util/Build
create mode 100644 tools/perf/arch/riscv/util/dwarf-regs.c
create mode 100644 tools/perf/arch/riscv/util/unwind-libdw.c
--
2.7.4
next reply other threads:[~2019-09-05 3:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 3:46 Mao Han [this message]
2019-09-05 3:46 ` [PATCH V7 1/2] riscv: Add support for perf registers sampling Mao Han
2019-09-05 7:54 ` Paul Walmsley
2019-09-05 3:46 ` [PATCH V7 2/2] riscv: Add support for libdw Mao Han
2019-09-05 7:55 ` Paul Walmsley
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