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    SubjectRe: [PATCH 01/16] perf: add doc for how to build perf with Asan and UBSan
    On Mon, Mar 18, 2019 at 05:08:14PM -0300, Arnaldo Carvalho de Melo wrote:
    > Em Mon, Mar 18, 2019 at 11:07:58AM +0100, Jiri Olsa escreveu:
    > > On Sat, Mar 16, 2019 at 04:05:41PM +0800, Changbin Du wrote:
    > > > AddressSanitizer (or ASan) and UndefinedBehaviorSanitizer (or UBSan) are
    > > > very useful tools to detect program bugs.
    > > > o AddressSanitizer (or ASan) is a GCC feature that detects memory
    > > > corruption bugs such as buffer overflows or memory leaks.
    > > > o UndefinedBehaviorSanitizer (or UBSan) is a fast undefined behavior
    > > > detector supprted by GCC. UBSan detect undefined behavior of programs
    > > > at runtime.
    > > >
    > > > This patch adds doc for how to use them on perf. Later patches will fix
    > > > some of the issues disclosed by them.
    > > >
    > > > Signed-off-by: Changbin Du <changbin.du@gmail.com>
    > > > ---
    > > > tools/perf/Documentation/Build.txt | 20 ++++++++++++++++++++
    > > > 1 file changed, 20 insertions(+)
    > > >
    > > > diff --git a/tools/perf/Documentation/Build.txt b/tools/perf/Documentation/Build.txt
    > > > index f6fc6507ba55..cae6e1d9b901 100644
    > > > --- a/tools/perf/Documentation/Build.txt
    > > > +++ b/tools/perf/Documentation/Build.txt
    > > > @@ -47,3 +47,23 @@ Those objects are then used in final linking:
    > > >
    > > > NOTE this description is omitting other libraries involved, only
    > > > focusing on build framework outcomes
    > >
    > > thanks for adding doc, one nit:
    > >
    > > > +
    > > > +3) buld and install perf
    > >
    > > there's already:
    > > 2) perf build
    > > =============
    > >
    > > please use something like
    > >
    > > 3) perf build for ASan/UBSan
    > > ============================
    > >
    > > > + $ cd tools/perf
    > > > + $ make DESTDIR=/usr
    > > > + $ make DESTDIR=/usr install
    > > > +
    > > > +4) build with ASan or UBSan
    > >
    > > no need for this label
    >
    > Did this and appart from the evsel->counts one that I fixed up, all
    > applied as-is, I added all the Fixes: tags, please consider doing it
    > next time.
    >
    > Please take a look after I push it to my perf/core branch.
    >
    ok, no problem.

    > Thanks,
    >
    > - Arnaldo

    --
    Cheers,
    Changbin Du

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