[PATCH v2 0/3] Support register names of all architectures
Arnaldo Carvalho de Melo
acme at kernel.org
Tue Dec 14 05:26:40 PST 2021
Em Tue, Dec 14, 2021 at 02:20:26PM +0530, Athira Rajeev escreveu:
>
>
> > On 07-Dec-2021, at 11:36 PM, German Gomez <german.gomez at arm.com> wrote:
> >
> > The following changeset applies some corrections to the way system
> > registers are processed and presented when reading perf.data files using
> > the various perf tools.
> >
> > The commit message from [3/3] shows how register names aren't correctly
> > presented when performing x-arch analysis of perf.data files (recording
> > in one arch, then reading the file from a different arch).
> >
> > - [PATCH 1/3] Fixes a potential out-of-bounds access when reading the
> > values of the registers in the perf.data file.
> > - [PATCH 2/3] Fixes an issue of ARM and ARM64 registers having the
> > same enum name.
> > - [PATCH 3/3] Refactors the function "perf_reg_name" declared in the
> > "tools/perf/util/perf_regs.h" header, in order to support every arch.
> >
> > Thanks,
> > German
>
> Looks good to me. Tested this patchset in powerpc by capturing regs in powerpc and doing
> perf report to read the data from x86.
>
> Reviewed-and-Tested-by: Athira Rajeev <atrajeev at linux.vnet.ibm.com>
Thanks, added to the commit log message.
- Arnaldo
> > --
> > Changes since v1
> >
> > - Added "Reported-by" tags.
> > - Removed [PATCH 2/4] because it's not needed (suggested by Athira
> > Rajeev).
> > - Removed [PATCH 3/4] which created additional header files with the
> > register names of every arch.
> > - Introduced [PATCH 2/3] to deal with ARM and ARM64 registers having the
> > same enum name across "/tools/perf/".
> > - Reworked the refactor of "perf_reg_name" function (now implemented in
> > perf_regs.c, rather than in the header file) in [PATCH 3/3].
> >
> > German Gomez (3):
> > perf tools: Prevent out-of-bounds access to registers
> > perf tools: Rename perf_event_arm_regs for ARM64 registers
> > perf tools: Support register names from all archs
> >
> > tools/perf/arch/arm/include/perf_regs.h | 42 --
> > tools/perf/arch/arm64/include/perf_regs.h | 78 +-
> > tools/perf/arch/csky/include/perf_regs.h | 82 ---
> > tools/perf/arch/mips/include/perf_regs.h | 69 --
> > tools/perf/arch/powerpc/include/perf_regs.h | 66 --
> > tools/perf/arch/riscv/include/perf_regs.h | 74 --
> > tools/perf/arch/s390/include/perf_regs.h | 78 --
> > tools/perf/arch/x86/include/perf_regs.h | 82 ---
> > tools/perf/builtin-script.c | 18 +-
> > tools/perf/util/event.h | 5 +-
> > tools/perf/util/libunwind/arm64.c | 2 +
> > tools/perf/util/perf_regs.c | 671 +++++++++++++++++-
> > tools/perf/util/perf_regs.h | 10 +-
> > .../scripting-engines/trace-event-python.c | 10 +-
> > tools/perf/util/session.c | 25 +-
> > 15 files changed, 709 insertions(+), 603 deletions(-)
> >
> > --
> > 2.25.1
> >
--
- Arnaldo
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