linux-kernel - Re: [PATCH V3 0/7] Clean up perf mem

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Message-ID: <8bfadc86-e137-4a9f-a9ce-0bc62464c195@linux.intel.com>
Date: Tue, 2 Jan 2024 15:08:27 -0500
From: "Liang, Kan" <kan.liang@...ux.intel.com>
To: kajoljain <kjain@...ux.ibm.com>, acme@...nel.org, irogers@...gle.com,
 peterz@...radead.org, mingo@...hat.com, namhyung@...nel.org,
 jolsa@...nel.org, adrian.hunter@...el.com, john.g.garry@...cle.com,
 will@...nel.org, james.clark@....com, mike.leach@...aro.org,
 leo.yan@...aro.org, yuhaixin.yhx@...ux.alibaba.com,
 renyu.zj@...ux.alibaba.com, tmricht@...ux.ibm.com, ravi.bangoria@....com,
 atrajeev@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
 linux-perf-users@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V3 0/7] Clean up perf mem

Hi Kajol Jain

On 2023-12-19 9:15 a.m., Liang, Kan wrote:
> 
> 
> On 2023-12-19 4:26 a.m., kajoljain wrote:
>> Hi,
>>   I was trying to test this patchset on powerpc.
>>
>> After applying it on top of acme's perf-tools-next branch, I am getting
>> below error:
>>
>>   INSTALL libsubcmd_headers
>>   INSTALL libperf_headers
>>   INSTALL libsymbol_headers
>>   INSTALL libapi_headers
>>   INSTALL libbpf_headers
>>   CC      arch/powerpc/util/mem-events.o
>> In file included from arch/powerpc/util/mem-events.c:3:
>> arch/powerpc/util/mem-events.h:5:52: error: ‘PERF_MEM_EVENTS__MAX’
>> undeclared here (not in a function)
>>     5 | extern struct perf_mem_event
>> perf_mem_events_power[PERF_MEM_EVENTS__MAX];
>>       |
>> ^~~~~~~~~~~~~~~~~~~~
>> make[6]: *** [/home/kajol/linux/tools/build/Makefile.build:105:
>> arch/powerpc/util/mem-events.o] Error 1
>> make[5]: *** [/home/kajol/linux/tools/build/Makefile.build:158: util]
>> Error 2
>> make[4]: *** [/home/kajol/linux/tools/build/Makefile.build:158: powerpc]
>> Error 2
>> make[3]: *** [/home/kajol/linux/tools/build/Makefile.build:158: arch]
>> Error 2
>> make[3]: *** Waiting for unfinished jobs....
>> make[2]: *** [Makefile.perf:693: perf-in.o] Error 2
>> make[1]: *** [Makefile.perf:251: sub-make] Error 2
>> make: *** [Makefile:70: all] Error 2
>>
>> It seems some headerfiles are missing from arch/powerpc/util/mem-
>> events.c
>>
> 
> Leo updated the headerfiles for ARM. https://termbin.com/0dkn
> 
> I guess powerpc has to do the same thing. Could you please try the below
> patch?


Does the patch work on powerpc?


Thanks,
Kan
> 
> diff --git a/tools/perf/arch/powerpc/util/mem-events.c
> b/tools/perf/arch/powerpc/util/mem-events.c
> index 72a6ac2b52f5..765d4a054b0a 100644
> --- a/tools/perf/arch/powerpc/util/mem-events.c
> +++ b/tools/perf/arch/powerpc/util/mem-events.c
> @@ -1,5 +1,6 @@
>  // SPDX-License-Identifier: GPL-2.0
> -#include "map_symbol.h"
> +#include "util/map_symbol.h"
> +#include "util/mem-events.h"
>  #include "mem-events.h"
> 
>  #define E(t, n, s, l, a) { .tag = t, .name = n, .event_name = s, .ldlat
> = l, .aux_event = a }
> 
> Thanks,
> Kan
> 
>> Thanks,
>> Kajol Jain
>>
>> On 12/14/23 01:21, kan.liang@...ux.intel.com wrote:
>>> From: Kan Liang <kan.liang@...ux.intel.com>
>>>
>>> Changes since V2:
>>> - Fix the Arm64 building error (Leo)
>>> - Add two new patches to clean up perf_mem_events__record_args()
>>>   and perf_pmus__num_mem_pmus() (Leo)
>>>
>>> Changes since V1:
>>> - Fix strcmp of PMU name checking (Ravi)
>>> - Fix "/," typo (Ian)
>>> - Rename several functions with perf_pmu__mem_events prefix. (Ian)
>>> - Fold the header removal patch into the patch where the cleanups made.
>>>   (Arnaldo)
>>> - Add reviewed-by and tested-by from Ian and Ravi
>>>
>>> As discussed in the below thread, the patch set is to clean up perf mem.
>>> https://lore.kernel.org/lkml/afefab15-cffc-4345-9cf4-c6a4128d4d9c@linux.intel.com/
>>>
>>> Introduce generic functions perf_mem_events__ptr(),
>>> perf_mem_events__name() ,and is_mem_loads_aux_event() to replace the
>>> ARCH specific ones.
>>> Simplify the perf_mem_event__supported().
>>>
>>> Only keeps the ARCH-specific perf_mem_events array in the corresponding
>>> mem-events.c for each ARCH.
>>>
>>> There is no functional change.
>>>
>>> The patch set touches almost all the ARCHs, Intel, AMD, ARM, Power and
>>> etc. But I can only test it on two Intel platforms.
>>> Please give it try, if you have machines with other ARCHs.
>>>
>>> Here are the test results:
>>> Intel hybrid machine:
>>>
>>> $perf mem record -e list
>>> ldlat-loads  : available
>>> ldlat-stores : available
>>>
>>> $perf mem record -e ldlat-loads -v --ldlat 50
>>> calling: record -e cpu_atom/mem-loads,ldlat=50/P -e cpu_core/mem-loads,ldlat=50/P
>>>
>>> $perf mem record -v
>>> calling: record -e cpu_atom/mem-loads,ldlat=30/P -e cpu_atom/mem-stores/P -e cpu_core/mem-loads,ldlat=30/P -e cpu_core/mem-stores/P
>>>
>>> $perf mem record -t store -v
>>> calling: record -e cpu_atom/mem-stores/P -e cpu_core/mem-stores/P
>>>
>>>
>>> Intel SPR:
>>> $perf mem record -e list
>>> ldlat-loads  : available
>>> ldlat-stores : available
>>>
>>> $perf mem record -e ldlat-loads -v --ldlat 50
>>> calling: record -e {cpu/mem-loads-aux/,cpu/mem-loads,ldlat=50/}:P
>>>
>>> $perf mem record -v
>>> calling: record -e {cpu/mem-loads-aux/,cpu/mem-loads,ldlat=30/}:P -e cpu/mem-stores/P
>>>
>>> $perf mem record -t store -v
>>> calling: record -e cpu/mem-stores/P
>>>
>>> Kan Liang (7):
>>>   perf mem: Add mem_events into the supported perf_pmu
>>>   perf mem: Clean up perf_mem_events__ptr()
>>>   perf mem: Clean up perf_mem_events__name()
>>>   perf mem: Clean up perf_mem_event__supported()
>>>   perf mem: Clean up is_mem_loads_aux_event()
>>>   perf mem: Clean up perf_mem_events__record_args()
>>>   perf mem: Clean up perf_pmus__num_mem_pmus()
>>>
>>>  tools/perf/arch/arm/util/pmu.c            |   3 +
>>>  tools/perf/arch/arm64/util/mem-events.c   |  39 +---
>>>  tools/perf/arch/arm64/util/mem-events.h   |   7 +
>>>  tools/perf/arch/powerpc/util/mem-events.c |  13 +-
>>>  tools/perf/arch/powerpc/util/mem-events.h |   7 +
>>>  tools/perf/arch/powerpc/util/pmu.c        |  11 ++
>>>  tools/perf/arch/s390/util/pmu.c           |   3 +
>>>  tools/perf/arch/x86/util/mem-events.c     |  99 ++--------
>>>  tools/perf/arch/x86/util/mem-events.h     |  10 +
>>>  tools/perf/arch/x86/util/pmu.c            |  19 +-
>>>  tools/perf/builtin-c2c.c                  |  45 ++---
>>>  tools/perf/builtin-mem.c                  |  48 ++---
>>>  tools/perf/util/mem-events.c              | 217 +++++++++++++---------
>>>  tools/perf/util/mem-events.h              |  19 +-
>>>  tools/perf/util/pmu.c                     |   4 +-
>>>  tools/perf/util/pmu.h                     |   7 +
>>>  tools/perf/util/pmus.c                    |   6 -
>>>  tools/perf/util/pmus.h                    |   1 -
>>>  18 files changed, 278 insertions(+), 280 deletions(-)
>>>  create mode 100644 tools/perf/arch/arm64/util/mem-events.h
>>>  create mode 100644 tools/perf/arch/powerpc/util/mem-events.h
>>>  create mode 100644 tools/perf/arch/powerpc/util/pmu.c
>>>  create mode 100644 tools/perf/arch/x86/util/mem-events.h
>>>
>>
>