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Subject: Re: [PATCH v8 00/22] perf arm-spe: Refactor decoding & dumping flow
To:     Leo Yan <leo.yan@linaro.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>
References: <20201111071149.815-1-leo.yan@linaro.org>
From:   =?UTF-8?Q?Andr=c3=a9_Przywara?= <andre.przywara@arm.com>
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Cc:     Dave Martin <Dave.Martin@arm.com>,
        James Clark <james.clark@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Al Grant <Al.Grant@arm.com>, Wei Li <liwei391@huawei.com>,
        John Garry <john.garry@huawei.com>,
        Will Deacon <will@kernel.org>,
        Mathieu Poirier <mathieu.poirier@linaro.org>,
        linux-kernel@vger.kernel.org
Organization: ARM Ltd.
Message-ID: <08024ef8-0407-5eeb-d6ad-86018dace8a4@arm.com>
Date:   Wed, 11 Nov 2020 10:13:52 +0000
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On 11/11/2020 07:11, Leo Yan wrote:

Hi Arnaldo, Ingo, Peter, (whoever feels responsible for taking this)

> This is patch set v8 for refactoring Arm SPE trace decoding and dumping.
I have reviewed every patch of this in anger, and am now fine with this
series. Given the bugs fixed, the improvements it brings in terms of
readability and maintainability, and the low risk it has on breaking
things, I would be happy to see it merged.

Thanks,
Andre.

> This version addresses Andre's comment to pass parameter '&buf_len' at
> the last call arm_spe_pkt_snprintf() in the function arm_spe_pkt_desc().
> 
> This patch set is cleanly applied on the top of perf/core branch
> with commit 644bf4b0f7ac ("perf jevents: Add test for arch std events").
> 
> I retested this patch set on Hisilicon D06 platform with commands
> "perf report -D" and "perf script", compared the decoding results
> between with this patch set and without this patch set, "diff" tool
> shows the result as expected.
> 
> Changes from v7:
> - Changed to pass '&buf_len' for the last call arm_spe_pkt_snprintf() in
>   the patch 07/22 (Andre).
> 
> Changes from v6:
> - Removed the redundant comma from the string in the patch 21/22 "perf
>   arm_spe: Decode memory tagging properties" (Dave);
> - Refined the return value for arm_spe_pkt_desc(): returns 0 for
>   success, otherwise returns non zero for failures; handle error code at
>   the end of function arm_spe_pkt_desc(); this is accomplished in the
>   new patch 07/22 "perf arm-spe: Consolidate arm_spe_pkt_desc()'s
>   return value" (Dave).
> 
> Changes from v5:
> - Directly bail out arm_spe_pkt_snprintf() if any error occurred
>   (Andre).
> 
> Changes from v4:
> - Implemented a cumulative error for arm_spe_pkt_snprintf() and changed
>   to condense code for printing strings (Dave);
> - Changed to check payload bits [55:52] for parse kernel address
>   (Andre).
> 
> Changes from v3:
> - Refined arm_spe_payload_len() and removed macro SPE_HEADER_SZ()
>   (Andre);
> - Refined packet header index macros (Andre);
> - Added patch "perf arm_spe: Fixup top byte for data virtual address" to
>   fixup the data virtual address for 64KB pages and refined comments for
>   the fixup (Andre);
> - Added Andre's review tag (using "b4 am" command);
> - Changed the macros to SPE_PKT_IS_XXX() format to check operation types
>   (Andre).
> 
> 
> Andre Przywara (1):
>   perf arm_spe: Decode memory tagging properties
> 
> Leo Yan (20):
>   perf arm-spe: Include bitops.h for BIT() macro
>   perf arm-spe: Fix a typo in comment
>   perf arm-spe: Refactor payload size calculation
>   perf arm-spe: Refactor arm_spe_get_events()
>   perf arm-spe: Fix packet length handling
>   perf arm-spe: Refactor printing string to buffer
>   perf arm-spe: Consolidate arm_spe_pkt_desc()'s return value
>   perf arm-spe: Refactor packet header parsing
>   perf arm-spe: Add new function arm_spe_pkt_desc_addr()
>   perf arm-spe: Refactor address packet handling
>   perf arm_spe: Fixup top byte for data virtual address
>   perf arm-spe: Refactor context packet handling
>   perf arm-spe: Add new function arm_spe_pkt_desc_counter()
>   perf arm-spe: Refactor counter packet handling
>   perf arm-spe: Add new function arm_spe_pkt_desc_event()
>   perf arm-spe: Refactor event type handling
>   perf arm-spe: Remove size condition checking for events
>   perf arm-spe: Add new function arm_spe_pkt_desc_op_type()
>   perf arm-spe: Refactor operation packet handling
>   perf arm-spe: Add more sub classes for operation packet
> 
> Wei Li (1):
>   perf arm-spe: Add support for ARMv8.3-SPE
> 
>  .../util/arm-spe-decoder/arm-spe-decoder.c    |  59 +-
>  .../util/arm-spe-decoder/arm-spe-decoder.h    |  17 -
>  .../arm-spe-decoder/arm-spe-pkt-decoder.c     | 601 ++++++++++--------
>  .../arm-spe-decoder/arm-spe-pkt-decoder.h     | 122 +++-
>  tools/perf/util/arm-spe.c                     |   2 +-
>  5 files changed, 479 insertions(+), 322 deletions(-)
>