linux-kernel - Re: [PATCH v5 07/10] powerpc/perf: open access for CAP

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Date:   Wed, 22 Jan 2020 16:32:00 +0530
From:   Anju T Sudhakar <anju@...ux.vnet.ibm.com>
To:     Alexey Budankov <alexey.budankov@...ux.intel.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        "jani.nikula@...ux.intel.com" <jani.nikula@...ux.intel.com>,
        "joonas.lahtinen@...ux.intel.com" <joonas.lahtinen@...ux.intel.com>,
        "rodrigo.vivi@...el.com" <rodrigo.vivi@...el.com>,
        "benh@...nel.crashing.org" <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        "james.bottomley@...senpartnership.com" 
        <james.bottomley@...senpartnership.com>,
        Serge Hallyn <serge@...lyn.com>,
        James Morris <jmorris@...ei.org>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Robert Richter <rric@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Song Liu <songliubraving@...com>,
        Andi Kleen <ak@...ux.intel.com>,
        "linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
        Igor Lubashev <ilubashe@...mai.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Stephane Eranian <eranian@...gle.com>,
        "linux-perf-users@...r.kernel.org" <linux-perf-users@...r.kernel.org>,
        "selinux@...r.kernel.org" <selinux@...r.kernel.org>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>,
        oprofile-list@...ts.sf.net,
        Lionel Landwerlin <lionel.g.landwerlin@...el.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jiri Olsa <jolsa@...hat.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 07/10] powerpc/perf: open access for CAP_PERFMON
 privileged process


On 1/20/20 5:00 PM, Alexey Budankov wrote:
> Open access to monitoring for CAP_PERFMON privileged processes.
> For backward compatibility reasons access to the monitoring remains
> open for CAP_SYS_ADMIN privileged processes but CAP_SYS_ADMIN usage
> for secure monitoring is discouraged with respect to CAP_PERFMON
> capability. Providing the access under CAP_PERFMON capability singly,
> without the rest of CAP_SYS_ADMIN credentials, excludes chances to
> misuse the credentials and makes the operations more secure.
>
> Signed-off-by: Alexey Budankov<alexey.budankov@...ux.intel.com>
> ---

Acked-by: Anju T Sudhakar<anju@...ux.vnet.ibm.com>