linux-kernel - Re: [PATCH 00/12] Add the page size in the perf record (user tools)

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Date:   Fri, 27 Nov 2020 21:22:34 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     kan.liang@...ux.intel.com
Cc:     acme@...nel.org, mingo@...nel.org, linux-kernel@...r.kernel.org,
        namhyung@...nel.org, eranian@...gle.com, ak@...ux.intel.com,
        mark.rutland@....com, will@...nel.org, mpe@...erman.id.au
Subject: Re: [PATCH 00/12] Add the page size in the perf record (user tools)

On Tue, Nov 17, 2020 at 11:56:25AM -0800, kan.liang@...ux.intel.com wrote:
> From: Kan Liang <kan.liang@...ux.intel.com>
> 
> Current perf can report both virtual addresses and physical addresses,
> but not the page size. Without the page size information of the utilized
> page, users cannot decide whether to promote/demote large pages to
> optimize memory usage.
> 
> The kernel patches have been merged into tip perf/core branch,
> commit 8d97e71811aa ("perf/core: Add PERF_SAMPLE_DATA_PAGE_SIZE")
> commit 76a5433f95f3 ("perf/x86/intel: Support PERF_SAMPLE_DATA_PAGE_SIZE")
> commit 4cb6a42e4c4b ("powerpc/perf: Support PERF_SAMPLE_DATA_PAGE_SIZE")
> commit 995f088efebe ("perf/core: Add support for PERF_SAMPLE_CODE_PAGE_SIZE")
> commit 51b646b2d9f8 ("perf,mm: Handle non-page-table-aligned hugetlbfs")
> 
> and Peter's perf/core branch
> commit 524680ce47a1 ("mm/gup: Provide gup_get_pte() more generic")
> commit 44a35d6937d2 ("mm: Introduce pXX_leaf_size()")
> commit 2f1e2f091ad0 ("perf/core: Fix arch_perf_get_page_size()")
> commit 7649e44aacdd ("arm64/mm: Implement pXX_leaf_size() support")
> commit 1df1ae7e262c ("sparc64/mm: Implement pXX_leaf_size() support")
> 
> This patch set is to enable the page size support in user tools.
> 
> Kan Liang (8):
>   tools headers UAPI: Update tools's copy of linux/perf_event.h
>   perf record: Support new sample type for data page size
>   perf script: Support data page size
>   perf sort: Add sort option for data page size
>   perf mem: Factor out a function to generate sort order
>   perf mem: Clean up output format
>   perf mem: Support data page size
>   perf test: Add test case for PERF_SAMPLE_DATA_PAGE_SIZE
> 
> Stephane Eranian (4):
>   perf tools: Add support for PERF_SAMPLE_CODE_PAGE_SIZE
>   perf script: Add support for PERF_SAMPLE_CODE_PAGE_SIZE
>   perf report: Add support for PERF_SAMPLE_CODE_PAGE_SIZE
>   perf test: Add test case for PERF_SAMPLE_CODE_PAGE_SIZE


hi,
I can't compile this on Fedora 32, check the log below

jirka


---
$ make JOBS=1
  BUILD:   Doing 'make -j1' parallel build
Warning: Kernel ABI header at 'tools/include/uapi/linux/perf_event.h' differs from latest version at 'include/uapi/linux/perf_event.h'
diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h
  CC       util/parse-events.o
  CC       util/session.o
util/session.c: In function ‘machines__deliver_event’:
util/session.c:1278:37: error: ‘%lu’ directive output may be truncated writing between 1 and 20 bytes into a region of size 10 [-Werror=format-truncation=]
 1278 |  snprintf(str, PAGE_SIZE_NAME_LEN, "%lu%c", size, suffixes[i]);
      |                                     ^~~
util/session.c:1278:36: note: directive argument in the range [1, 18446744073709551615]
 1278 |  snprintf(str, PAGE_SIZE_NAME_LEN, "%lu%c", size, suffixes[i]);
      |                                    ^~~~~~~
In file included from /usr/include/stdio.h:867,
                 from /home/jolsa/kernel/linux-perf/tools/lib/perf/include/perf/cpumap.h:6,
                 from util/session.c:13:
/usr/include/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 3 and 22 bytes into a destination of size 10
   67 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   68 |        __bos (__s), __fmt, __va_arg_pack ());
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
util/session.c:1278:37: error: ‘%lu’ directive output may be truncated writing between 1 and 20 bytes into a region of size 10 [-Werror=format-truncation=]
 1278 |  snprintf(str, PAGE_SIZE_NAME_LEN, "%lu%c", size, suffixes[i]);
      |                                     ^~~
util/session.c:1278:36: note: directive argument in the range [1, 18446744073709551615]
 1278 |  snprintf(str, PAGE_SIZE_NAME_LEN, "%lu%c", size, suffixes[i]);
      |                                    ^~~~~~~
In file included from /usr/include/stdio.h:867,
                 from /home/jolsa/kernel/linux-perf/tools/lib/perf/include/perf/cpumap.h:6,
                 from util/session.c:13:
/usr/include/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 3 and 22 bytes into a destination of size 10
   67 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   68 |        __bos (__s), __fmt, __va_arg_pack ());
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
util/session.c: In function ‘get_page_size_name’:
util/session.c:1278:37: error: ‘%lu’ directive output may be truncated writing between 1 and 20 bytes into a region of size 10 [-Werror=format-truncation=]
 1278 |  snprintf(str, PAGE_SIZE_NAME_LEN, "%lu%c", size, suffixes[i]);
      |                                     ^~~
util/session.c:1278:36: note: directive argument in the range [1, 18446744073709551615]
 1278 |  snprintf(str, PAGE_SIZE_NAME_LEN, "%lu%c", size, suffixes[i]);
      |                                    ^~~~~~~
In file included from /usr/include/stdio.h:867,
                 from /home/jolsa/kernel/linux-perf/tools/lib/perf/include/perf/cpumap.h:6,
                 from util/session.c:13:
/usr/include/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 3 and 22 bytes into a destination of size 10
   67 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   68 |        __bos (__s), __fmt, __va_arg_pack ());
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [/home/jolsa/kernel/linux-perf/tools/build/Makefile.build:97: util/session.o] Error 1
make[3]: *** [/home/jolsa/kernel/linux-perf/tools/build/Makefile.build:139: util] Error 2
make[2]: *** [Makefile.perf:647: perf-in.o] Error 2
make[1]: *** [Makefile.perf:233: sub-make] Error 2
make: *** [Makefile:70: all] Error 2