From: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Thomas-Mich Richter <tmricht@linux.vnet.ibm.com>,
Michael Petlan <mpetlan@redhat.com>, Jiri Olsa <jolsa@redhat.com>,
linux-perf-users@vger.kernel.org, linux-s390@vger.kernel.org
Subject: [PATCH 0/5] perf trace: Introduce arch-specific errno code/name mappings
Date: Tue, 16 Jan 2018 10:46:26 +0100 [thread overview]
Message-ID: <1516095991-16337-1-git-send-email-brueckner@linux.vnet.ibm.com> (raw)
Introduce an interface to perf to resolve errno codes to their names.
This is used by perf trace to display the errno name, for example, ENOENT,
for an system call. The previous implementation used the errno_to_name()
function from the audit library.
With this change, a table of errno code and names are created for each
architecture on which perf is supported (others can be easily added if
necessary). The errno_to_name() function from the audit library is
replaced with an arch-specific one, arch_errno_to_name().
The benefit is that perf trace does not longer have a direct dependency
for the audit library and the perf trace output can be displayed across
architectures. For example, collect trace output on s390 and display it
on x86.
The audit library dependency can be further reduced and completely removed
for architectures that support system call tables in perf (see last commit).
See also discussion on
https://www.spinics.net/lists/linux-perf-users/msg04782.html
Please note that this patch set is bases on the perf/core branch.
Hendrik Brueckner (5):
tools include arch: Grab a copy of errno.h for arch's supported by
perf
tools include asm-generic: Grab errno.h and errno-base.h
perf util: Introduce architecture specific errno/name mapping
perf trace: Obtain errno values by using arch_errno_to_name()
perf trace: Remove audit-libs dependency if syscall tables are present
tools/arch/alpha/include/uapi/asm/errno.h | 128 +++++++++++++++++++++++++++
tools/arch/mips/include/asm/errno.h | 17 ++++
tools/arch/mips/include/uapi/asm/errno.h | 130 ++++++++++++++++++++++++++++
tools/arch/parisc/include/uapi/asm/errno.h | 128 +++++++++++++++++++++++++++
tools/arch/powerpc/include/uapi/asm/errno.h | 10 +++
tools/arch/sparc/include/uapi/asm/errno.h | 118 +++++++++++++++++++++++++
tools/arch/x86/include/uapi/asm/errno.h | 1 +
tools/include/uapi/asm-generic/errno-base.h | 40 +++++++++
tools/include/uapi/asm-generic/errno.h | 123 ++++++++++++++++++++++++++
tools/perf/.gitignore | 1 +
tools/perf/Makefile.config | 12 ++-
tools/perf/Makefile.perf | 9 +-
tools/perf/builtin-help.c | 2 +-
tools/perf/builtin-trace.c | 14 ++-
tools/perf/check-headers.sh | 9 ++
tools/perf/perf.c | 4 +-
tools/perf/util/Build | 1 +
tools/perf/util/errno-names.h | 7 ++
tools/perf/util/generate-cmdlist.sh | 2 +-
tools/perf/util/generate-errno-names.sh | 101 +++++++++++++++++++++
20 files changed, 845 insertions(+), 12 deletions(-)
create mode 100644 tools/arch/alpha/include/uapi/asm/errno.h
create mode 100644 tools/arch/mips/include/asm/errno.h
create mode 100644 tools/arch/mips/include/uapi/asm/errno.h
create mode 100644 tools/arch/parisc/include/uapi/asm/errno.h
create mode 100644 tools/arch/powerpc/include/uapi/asm/errno.h
create mode 100644 tools/arch/sparc/include/uapi/asm/errno.h
create mode 100644 tools/arch/x86/include/uapi/asm/errno.h
create mode 100644 tools/include/uapi/asm-generic/errno-base.h
create mode 100644 tools/include/uapi/asm-generic/errno.h
create mode 100644 tools/perf/util/errno-names.h
create mode 100755 tools/perf/util/generate-errno-names.sh
--
1.8.3.1
next reply other threads:[~2018-01-16 9:46 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-16 9:46 Hendrik Brueckner [this message]
2018-01-16 9:46 ` [PATCH 1/5] tools include arch: Grab a copy of errno.h for arch's supported by perf Hendrik Brueckner
2018-01-16 9:46 ` [PATCH 2/5] tools include asm-generic: Grab errno.h and errno-base.h Hendrik Brueckner
2018-01-16 9:46 ` [PATCH 3/5] perf util: Introduce architecture specific errno/name mapping Hendrik Brueckner
2018-01-16 13:58 ` Arnaldo Carvalho de Melo
2018-01-17 8:49 ` Hendrik Brueckner
2018-01-18 10:07 ` Jiri Olsa
2018-01-18 10:49 ` Arnaldo Carvalho de Melo
2018-01-18 11:33 ` Hendrik Brueckner
2018-01-18 14:11 ` Arnaldo Carvalho de Melo
2018-01-18 12:19 ` Jiri Olsa
2018-01-16 9:46 ` [PATCH 4/5] perf trace: Obtain errno values by using arch_errno_to_name() Hendrik Brueckner
2018-01-16 9:46 ` [PATCH 5/5] perf trace: Remove audit-libs dependency if syscall tables are present Hendrik Brueckner
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