linux-kernel - Re: [PATCH v3 0/2] perf tests: Check for ARM [vectors] page

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Message-ID: <20190108132326.GC28965@kernel.org>
Date:   Tue, 8 Jan 2019 10:23:26 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        linux-kernel@...r.kernel.org, cphealy@...il.com,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Kim Phillips <kim.phillips@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        rmk+kernel@...linux.org.uk, l.stach@...gutronix.de
Subject: Re: [PATCH v3 0/2] perf tests: Check for ARM [vectors] page

Em Tue, Jan 01, 2019 at 06:39:26PM +0100, Jiri Olsa escreveu:
> On Thu, Dec 20, 2018 at 07:43:35PM -0800, Florian Fainelli wrote:
> > I just painfully learned that perf would segfault when
> > CONFIG_KUSER_HELPERS is disabled because it unconditionally makes use of
> > it. This patch series adds an ARM test for that by leveraging the
> > existing find_vdso_map() function and making it more generic and capable
> > of location any map within /proc/self/maps.
> > 
> > Changes in v3:
> > 
> > - remove find_vdso_map() call find_map() with VDSO__MAP_NAME
> > 
> > Changes in v2:
> > 
> > - use strlen() instead of sizeof() -1 since we made the page name a
> >   parameter
> > - use TEST_OK/TEST_FAIL in lieu of 0/-1
> > - added an error message indicating CONFIG_KUSER_HELPERS might be
> >   disabled
> > 
> > Florian Fainelli (2):
> >   perf tools: Make find_vdso_map() more modular
> >   perf tests: Add a test for the ARM 32-bit [vectors] page
> 
> Acked-by: Jiri Olsa <jolsa@...nel.org>

Thanks, applied.

- Arnaldo