linux-kernel - Re: [PATCH v1 0/6] maps memory improvements and fixes

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Date: Wed, 7 Feb 2024 09:49:52 -0800
From: Ian Rogers <irogers@...gle.com>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Adrian Hunter <adrian.hunter@...el.com>, Song Liu <song@...nel.org>, 
	Miguel Ojeda <ojeda@...nel.org>, Liam Howlett <liam.howlett@...cle.com>, 
	Colin Ian King <colin.i.king@...il.com>, K Prateek Nayak <kprateek.nayak@....com>, 
	Artem Savkov <asavkov@...hat.com>, Changbin Du <changbin.du@...wei.com>, 
	Masami Hiramatsu <mhiramat@...nel.org>, Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, 
	Yang Jihong <yangjihong1@...wei.com>, Tiezhu Yang <yangtiezhu@...ngson.cn>, 
	James Clark <james.clark@....com>, liuwenyu <liuwenyu7@...wei.com>, Leo Yan <leo.yan@...aro.org>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org, 
	bpf@...r.kernel.org
Subject: Re: [PATCH v1 0/6] maps memory improvements and fixes

On Wed, Feb 7, 2024 at 8:54 AM Namhyung Kim <namhyung@...nel.org> wrote:
>
> Hi Ian,
>
> On Mon, Feb 5, 2024 at 7:33 PM Ian Rogers <irogers@...gle.com> wrote:
> >
> > First 6 patches from:
> > https://lore.kernel.org/lkml/20240202061532.1939474-1-irogers@google.com/
> >
> > Ian Rogers (6):
> >   perf maps: Switch from rbtree to lazily sorted array for addresses
> >   perf maps: Get map before returning in maps__find
> >   perf maps: Get map before returning in maps__find_by_name
> >   perf maps: Get map before returning in maps__find_next_entry
> >   perf maps: Hide maps internals
> >   perf maps: Locking tidy up of nr_maps
>
> This fails to build with NO_LIBUNWIND=1
>
> util/unwind-libdw.c: In function ‘unwind__get_entries’:
> util/unwind-libdw.c:266:70: error: invalid use of undefined type ‘struct maps’
>   266 |                 .machine        =
> RC_CHK_ACCESS(thread__maps(thread))->machine,

Thanks Namhyung, will fix in v2.

Ian

> Thanks,
> Namhyung
>
>
> >
> >  tools/perf/arch/x86/tests/dwarf-unwind.c |    1 +
> >  tools/perf/tests/maps.c                  |    3 +
> >  tools/perf/tests/thread-maps-share.c     |    8 +-
> >  tools/perf/tests/vmlinux-kallsyms.c      |   10 +-
> >  tools/perf/util/bpf-event.c              |    1 +
> >  tools/perf/util/callchain.c              |    2 +-
> >  tools/perf/util/event.c                  |    4 +-
> >  tools/perf/util/machine.c                |   34 +-
> >  tools/perf/util/map.c                    |    1 +
> >  tools/perf/util/maps.c                   | 1296 ++++++++++++++--------
> >  tools/perf/util/maps.h                   |   65 +-
> >  tools/perf/util/probe-event.c            |    1 +
> >  tools/perf/util/symbol-elf.c             |    4 +-
> >  tools/perf/util/symbol.c                 |   31 +-
> >  tools/perf/util/thread.c                 |    2 +-
> >  tools/perf/util/unwind-libunwind-local.c |    2 +-
> >  tools/perf/util/unwind-libunwind.c       |    7 +-
> >  17 files changed, 899 insertions(+), 573 deletions(-)
> >
> > --
> > 2.43.0.594.gd9cf4e227d-goog
> >