From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
To: Andi Kleen <ak@linux.intel.com>, Tvrtko Ursulin <tursulin@ursulin.net>
Cc: linux-kernel@vger.kernel.org,
Tvrtko Ursulin <tvrtko.ursulin@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Madhavan Srinivasan <maddy@linux.vnet.ibm.com>,
Alexey Budankov <alexey.budankov@linux.intel.com>,
x86@kernel.org
Subject: Re: [RFC 3/5] perf: Allow per PMU access control
Date: Fri, 28 Sep 2018 09:57:37 +0100 [thread overview]
Message-ID: <38a45f2b-b47a-fccd-2c87-3a46502202a4@linux.intel.com> (raw)
In-Reply-To: <20180927201559.GH28040@tassilo.jf.intel.com>
On 27/09/2018 21:15, Andi Kleen wrote:
>> + mutex_lock(&pmus_lock);
>> + list_for_each_entry(pmu, &pmus, entry)
>> + pmu->perf_event_paranoid = sysctl_perf_event_paranoid;
>> + mutex_unlock(&pmus_lock);
>
> What happens to pmus that got added later?
There is a hunk a bit lower in the patch where in perf_pmu_register the
initial setting is assigned from the global sysctl.
> The rest looks good.
>
> Can you post a non RFC version?
Sure!
Regards,
Tvrtko
next prev parent reply other threads:[~2018-09-28 8:57 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-19 12:27 [RFC 0/5] perf: Per PMU access controls (paranoid setting) Tvrtko Ursulin
2018-09-19 12:27 ` [RFC 1/5] perf: Move some access checks later in perf_event_open Tvrtko Ursulin
2018-09-19 12:27 ` [RFC 2/5] perf: Pass pmu pointer to perf_paranoid_* helpers Tvrtko Ursulin
2018-09-19 12:27 ` [RFC 3/5] perf: Allow per PMU access control Tvrtko Ursulin
2018-09-27 20:15 ` Andi Kleen
2018-09-28 8:57 ` Tvrtko Ursulin [this message]
2018-09-19 12:27 ` [RFC 4/5] perf Documentation: Document the per PMU perf_event_paranoid interface Tvrtko Ursulin
2018-09-19 12:27 ` [RFC 5/5] tools/perf: Add support for per-PMU access control Tvrtko Ursulin
2018-09-28 10:26 ` [RFC 0/5] perf: Per PMU access controls (paranoid setting) Thomas Gleixner
2018-09-28 13:22 ` Tvrtko Ursulin
2018-09-28 14:02 ` Thomas Gleixner
2018-09-28 14:56 ` Tvrtko Ursulin
2018-09-28 15:23 ` Thomas Gleixner
2018-09-28 15:45 ` Alexey Budankov
2018-09-28 18:20 ` Thomas Gleixner
2018-09-28 20:45 ` Andi Kleen
2018-09-29 6:19 ` Thomas Gleixner
2018-10-01 6:25 ` Alexey Budankov
2018-09-28 15:12 ` Jann Horn
2018-09-28 22:02 ` Jann Horn
2018-10-01 6:27 ` Alexey Budankov
2018-09-28 16:41 ` Mark Rutland
2018-09-28 17:23 ` Andi Kleen
2018-09-28 17:40 ` Mark Rutland
2018-09-28 20:49 ` Andi Kleen
2018-09-28 20:54 ` Jann Horn
2018-09-28 20:59 ` Andi Kleen
2018-09-28 21:22 ` Jann Horn
2018-09-28 21:27 ` Andi Kleen
2018-10-01 6:25 ` Alexey Budankov
2018-10-01 16:11 ` Thomas Gleixner
2018-10-01 16:15 ` Jann Horn
2018-10-01 20:51 ` Alexey Budankov
2018-10-02 6:40 ` Thomas Gleixner
2018-10-02 11:44 ` Alexey Budankov
2018-10-03 17:01 ` Jann Horn
2018-10-04 17:11 ` Alexey Budankov
2018-09-29 6:30 ` Thomas Gleixner
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