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Date:   Tue, 5 May 2020 14:03:20 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Daniel Díaz <daniel.diaz@...aro.org>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        Andreas Gerstmayr <agerstmayr@...hat.com>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        open list <linux-kernel@...r.kernel.org>,
        linux-perf-users@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        He Zhe <zhe.he@...driver.com>, Ian Rogers <irogers@...gle.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Konstantin Kharlamov <hi-angel@...dex.ru>,
        Stephane Eranian <eranian@...gle.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        lkft-triage@...ts.linaro.org
Subject: Re: [GIT PULL] perf/core improvements and fixes

Em Tue, May 05, 2020 at 11:57:18AM -0500, Daniel Díaz escreveu:
> Hello!
> 
> On Tue, 5 May 2020 at 11:37, Arnaldo Carvalho de Melo
> <arnaldo.melo@...il.com> wrote:
> >
> > Em Mon, May 04, 2020 at 02:07:56PM -0500, Daniel Díaz escreveu:
> > > Hello!
> > >
> > > On Fri, 24 Apr 2020 at 09:10, Andreas Gerstmayr <agerstmayr@...hat.com> wrote:
> > > >
> > > > On 24.04.20 15:07, Arnaldo Carvalho de Melo wrote:
> > > > > Em Thu, Apr 23, 2020 at 04:28:46PM -0500, Daniel Díaz escreveu:
> > > > >> On Wed, 22 Apr 2020 at 07:09, Ingo Molnar <mingo@...nel.org> wrote:
> > > > >>>>   85 files changed, 1851 insertions(+), 513 deletions(-)
> > > > >
> > > > >>> Pulled, thanks a lot Arnaldo!
> > > > >
> > > > >> Our OpenEmbedded builds detected an issue with 5287f9269206 ("perf
> > > > >> script: Add flamegraph.py script"):
> > > > >>    ERROR: perf-1.0-r9 do_package_qa: QA Issue:
> > > > >> /usr/libexec/perf-core/scripts/python/bin/flamegraph-report contained
> > > > >> in package perf-python requires /usr/bin/sh, but no providers found in
> > > > >> RDEPENDS_perf-python? [file-rdeps]
> > > > >
> > > > >
> > > > > yeah, the flamegraph scripts are the outliers, there, everything else is
> > > > > using /bin/bash, so I'll switch to that, ok Andreas?
> > > >
> > > > Sure, no problem. Thanks!
> > >
> > > Just a gentle reminder that this can still be fixed in today's
> > > linux-next tree (next-20200504).
> >
> > Thanks for the reminder, I've just added this to my tree:
> >
> > commit c74ab13a30d3bec443c116e25b611255c58f32c0
> > Author: Arnaldo Carvalho de Melo <acme@...hat.com>
> > Date:   Tue May 5 13:33:12 2020 -0300
> >
> >     perf flamegraph: Use /bin/bash for report script
> >
> >     As all the other tools/perf/scripts/python/bin/*-report scripts, fixing
> >     the this problem reported by Daniel Diaz:
> >
> >       Our OpenEmbedded builds detected an issue with 5287f9269206 ("perf
> >       script: Add flamegraph.py script"):
> >         ERROR: perf-1.0-r9 do_package_qa: QA Issue:
> >       /usr/libexec/perf-core/scripts/python/bin/flamegraph-report contained
> >       in package perf-python requires /usr/bin/sh, but no providers found in
> >       RDEPENDS_perf-python? [file-rdeps]
> >
> >       This means that there is a new binary pulled in in the shebang line
> >       which was unaccounted for: `/usr/bin/sh`. I don't see any other usage
> >       of /usr/bin/sh in the kernel tree (does not even exist on my Ubuntu
> >       dev machine) but plenty of /bin/sh. This patch is needed:
> >       -----8<----------8<----------8<-----
> >       diff --git a/tools/perf/scripts/python/bin/flamegraph-record
> >       b/tools/perf/scripts/python/bin/flamegraph-record
> >       index 725d66e71570..a2f3fa25ef81 100755
> >       --- a/tools/perf/scripts/python/bin/flamegraph-record
> >       +++ b/tools/perf/scripts/python/bin/flamegraph-record
> >       @@ -1,2 +1,2 @@
> >       -#!/usr/bin/sh
> >       +#!/bin/sh
> >        perf record -g "$@"
> >       diff --git a/tools/perf/scripts/python/bin/flamegraph-report
> >       b/tools/perf/scripts/python/bin/flamegraph-report
> >       index b1a79afd903b..b0177355619b 100755
> >       --- a/tools/perf/scripts/python/bin/flamegraph-report
> >       +++ b/tools/perf/scripts/python/bin/flamegraph-report
> >       @@ -1,3 +1,3 @@
> >       -#!/usr/bin/sh
> >       +#!/bin/sh
> >        # description: create flame graphs
> >        perf script -s "$PERF_EXEC_PATH"/scripts/python/flamegraph.py -- "$@"
> >       ----->8---------->8---------->8-----
> >
> >     Fixes: 5287f9269206 ("perf script: Add flamegraph.py script")
> >     Reported-by: Daniel Díaz <daniel.diaz@...aro.org>
> >     Cc: Adrian Hunter <adrian.hunter@...el.com>
> >     Cc: Andreas Gerstmayr <agerstmayr@...hat.com>
> >     Cc: Jiri Olsa <jolsa@...nel.org>
> >     Cc: lkft-triage@...ts.linaro.org
> >     Cc: Namhyung Kim <namhyung@...nel.org>
> >     Link: http://lore.kernel.org/lkml/CAEUSe7_wmKS361mKLTB1eYbzYXcKkXdU26BX5BojdKRz8MfPCw@mail.gmail.com
> >     Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> >
> > diff --git a/tools/perf/scripts/python/bin/flamegraph-report b/tools/perf/scripts/python/bin/flamegraph-report
> > index b1a79afd903b..53c5dc90c87e 100755
> > --- a/tools/perf/scripts/python/bin/flamegraph-report
> > +++ b/tools/perf/scripts/python/bin/flamegraph-report
> > @@ -1,3 +1,3 @@
> > -#!/usr/bin/sh
> > +#!/bin/bash
> >  # description: create flame graphs
> >  perf script -s "$PERF_EXEC_PATH"/scripts/python/flamegraph.py -- "$@"
> 
> What about flamegraph-record?

oops, make that this instead:


commit b3a63d0c17e6e1d23a6b44502b55f066adfd8e6a
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
Date:   Tue May 5 13:33:12 2020 -0300

    perf flamegraph: Use /bin/bash for report and record scripts
    
    As all the other tools/perf/scripts/python/bin/*-{report,record}
    scripts, fixing the this problem reported by Daniel Diaz:
    
      Our OpenEmbedded builds detected an issue with 5287f9269206 ("perf
      script: Add flamegraph.py script"):
        ERROR: perf-1.0-r9 do_package_qa: QA Issue:
      /usr/libexec/perf-core/scripts/python/bin/flamegraph-report contained
      in package perf-python requires /usr/bin/sh, but no providers found in
      RDEPENDS_perf-python? [file-rdeps]
    
      This means that there is a new binary pulled in in the shebang line
      which was unaccounted for: `/usr/bin/sh`. I don't see any other usage
      of /usr/bin/sh in the kernel tree (does not even exist on my Ubuntu
      dev machine) but plenty of /bin/sh. This patch is needed:
      -----8<----------8<----------8<-----
      diff --git a/tools/perf/scripts/python/bin/flamegraph-record
      b/tools/perf/scripts/python/bin/flamegraph-record
      index 725d66e71570..a2f3fa25ef81 100755
      --- a/tools/perf/scripts/python/bin/flamegraph-record
      +++ b/tools/perf/scripts/python/bin/flamegraph-record
      @@ -1,2 +1,2 @@
      -#!/usr/bin/sh
      +#!/bin/sh
       perf record -g "$@"
      diff --git a/tools/perf/scripts/python/bin/flamegraph-report
      b/tools/perf/scripts/python/bin/flamegraph-report
      index b1a79afd903b..b0177355619b 100755
      --- a/tools/perf/scripts/python/bin/flamegraph-report
      +++ b/tools/perf/scripts/python/bin/flamegraph-report
      @@ -1,3 +1,3 @@
      -#!/usr/bin/sh
      +#!/bin/sh
       # description: create flame graphs
       perf script -s "$PERF_EXEC_PATH"/scripts/python/flamegraph.py -- "$@"
      ----->8---------->8---------->8-----
    
    Fixes: 5287f9269206 ("perf script: Add flamegraph.py script")
    Reported-by: Daniel Díaz <daniel.diaz@...aro.org>
    Acked-by: Andreas Gerstmayr <agerstmayr@...hat.com>
    Cc: Adrian Hunter <adrian.hunter@...el.com>
    Cc: Jiri Olsa <jolsa@...nel.org>
    Cc: lkft-triage@...ts.linaro.org
    Cc: Namhyung Kim <namhyung@...nel.org>
    Link: http://lore.kernel.org/lkml/CAEUSe7_wmKS361mKLTB1eYbzYXcKkXdU26BX5BojdKRz8MfPCw@mail.gmail.com
    Link: http://lore.kernel.org/lkml/20200505163745.GD3777@redhat.com
    Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>

diff --git a/tools/perf/scripts/python/bin/flamegraph-record b/tools/perf/scripts/python/bin/flamegraph-record
index 725d66e71570..7df5a19c0163 100755
--- a/tools/perf/scripts/python/bin/flamegraph-record
+++ b/tools/perf/scripts/python/bin/flamegraph-record
@@ -1,2 +1,2 @@
-#!/usr/bin/sh
+#!/bin/bash
 perf record -g "$@"
diff --git a/tools/perf/scripts/python/bin/flamegraph-report b/tools/perf/scripts/python/bin/flamegraph-report
index b1a79afd903b..53c5dc90c87e 100755
--- a/tools/perf/scripts/python/bin/flamegraph-report
+++ b/tools/perf/scripts/python/bin/flamegraph-report
@@ -1,3 +1,3 @@
-#!/usr/bin/sh
+#!/bin/bash
 # description: create flame graphs
 perf script -s "$PERF_EXEC_PATH"/scripts/python/flamegraph.py -- "$@"

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