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

[kajoljain <kjain@linux.ibm.com>]

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

Thanks,
Kajol Jain

On 12/14/23 01:21, kan.liang@linux.intel.com wrote:
> From: Kan Liang <kan.liang@linux.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
>