Messages in this thread | | | Subject | Re: [PATCH V4 0/6] Add the page size in the perf record (user tools) | From | "Liang, Kan" <> | Date | Tue, 12 Jan 2021 14:13:44 -0500 |
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On 1/12/2021 12:24 AM, Athira Rajeev wrote: > > >> On 06-Jan-2021, at 1:27 AM, kan.liang@linux.intel.com wrote: >> >> From: Kan Liang <kan.liang@linux.intel.com> >> >> Changes since V3: >> - Rebase on top of acme's perf/core branch >> commit c07b45a355ee ("perf record: Tweak "Lowering..." warning in record_opts__config_freq") >> >> Changes since V2: >> - Rebase on top of acme perf/core branch >> commit eec7b53d5916 ("perf test: Make sample-parsing test aware of PERF_SAMPLE_{CODE,DATA}_PAGE_SIZE") >> - Use unit_number__scnprintf() in get_page_size_name() >> - Emit warning about kernel not supporting the code page size sample_type bit >> >> Changes since V1: >> - Fix the compile warning with GCC 10 >> - Add Acked-by from Namhyung Kim >> >> 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. > > Hi Kan Liang, > > I am trying to check this series on powerpc. > > # perf mem --phys-data --data-page-size record <workload> > > To my observation, some of the samples returned zero size and comes as ’N/A’ in the perf report > > # perf mem --phys-data --data-page-size report > > For fetching the page size, though initially there was a weak function added ( as arch_perf_get_page_size ) here: > > https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/commit/?h=perf/core&id=51b646b2d9f84d6ff6300e3c1d09f2be4329a424 > > later I see it got removed here: > > https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/commit/?h=perf/core&id=8af26be062721e52eba1550caf50b712f774c5fd > > I picked kernel changes from git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git , or I am missing something ?
I believe all the kernel changes have been merged.
According to the commit message of the recent changes, only Power/8xxx is supported for power for now. I guess that may be the reason of some 'N/A's. https://lore.kernel.org/patchwork/cover/1345521/
Thanks, Kan
> > Thanks > Athira > >> >> Kan Liang (3): >> perf mem: Clean up output format >> perf mem: Support data page size >> perf tools: Add support for PERF_SAMPLE_CODE_PAGE_SIZE >> >> Stephane Eranian (3): >> 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 >> >> tools/perf/Documentation/perf-mem.txt | 3 + >> tools/perf/Documentation/perf-record.txt | 3 + >> tools/perf/Documentation/perf-report.txt | 1 + >> tools/perf/Documentation/perf-script.txt | 2 +- >> tools/perf/builtin-mem.c | 111 +++++++++++----------- >> tools/perf/builtin-record.c | 2 + >> tools/perf/builtin-script.c | 13 ++- >> tools/perf/tests/sample-parsing.c | 4 + >> tools/perf/util/event.h | 1 + >> tools/perf/util/evsel.c | 18 +++- >> tools/perf/util/evsel.h | 1 + >> tools/perf/util/hist.c | 2 + >> tools/perf/util/hist.h | 1 + >> tools/perf/util/perf_event_attr_fprintf.c | 2 +- >> tools/perf/util/record.h | 1 + >> tools/perf/util/session.c | 3 + >> tools/perf/util/sort.c | 26 +++++ >> tools/perf/util/sort.h | 2 + >> tools/perf/util/synthetic-events.c | 8 ++ >> 19 files changed, 144 insertions(+), 60 deletions(-) >> >> -- >> 2.25.1 >> >> >> >
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