Linux-csky Archive on lore.kernel.org
 help / color / Atom feed
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
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


             reply index

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

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=cover.1567653632.git.han_mao@c-sky.com \
    --to=han_mao@c-sky.com \
    --cc=green.hu@gmail.com \
    --cc=guoren@kernel.org \
    --cc=hch@lst.de \
    --cc=linux-csky@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=palmer@sifive.com \
    --cc=paul.walmsley@sifive.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-csky Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-csky/0 linux-csky/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-csky linux-csky/ https://lore.kernel.org/linux-csky \
		linux-csky@vger.kernel.org linux-csky@archiver.kernel.org
	public-inbox-index linux-csky


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-csky


AGPL code for this site: git clone https://public-inbox.org/ public-inbox