From: Peter Zijlstra <peterz@infradead.org>
To: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: acme@kernel.org, alexander.shishkin@linux.intel.com,
jolsa@redhat.com, namhyung@kernel.org, songliubraving@fb.com,
eranian@google.com, alexey.budankov@linux.intel.com,
ak@linux.intel.com, mark.rutland@arm.com, megha.dey@intel.com,
frederic@kernel.org, maddy@linux.ibm.com, irogers@google.com,
kim.phillips@amd.com, linux-kernel@vger.kernel.org,
santosh.shukla@amd.com
Subject: Re: [RFC v2] perf: Rewrite core context handling
Date: Mon, 13 Jun 2022 16:55:28 +0200 [thread overview]
Message-ID: <YqdP4NExuwOHdC0G@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <YqdLH+ZU/sf4n0pa@hirez.programming.kicks-ass.net>
On Mon, Jun 13, 2022 at 04:35:11PM +0200, Peter Zijlstra wrote:
> @@ -12125,6 +12232,8 @@ SYSCALL_DEFINE5(perf_event_open,
> goto err_task;
> }
>
> + // XXX premature; what if this is allowed, but we get moved to a PMU
> + // that doesn't have this.
> if (is_sampling_event(event)) {
> if (event->pmu->capabilities & PERF_PMU_CAP_NO_INTERRUPT) {
> err = -EOPNOTSUPP;
No; this really should be against the event's native PMU. If the event
can't natively sample, it can't sample when placed in another group
either.
next prev parent reply other threads:[~2022-06-13 18:36 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-13 13:47 [RFC v2] perf: Rewrite core context handling Ravi Bangoria
2022-01-17 7:18 ` [perf] f7cf7134e4: WARNING:at_kernel/events/core.c:#__pmu_ctx_sched_out kernel test robot
2022-01-31 4:43 ` [RFC v2] perf: Rewrite core context handling Ravi Bangoria
2022-06-13 14:35 ` Peter Zijlstra
2022-06-13 14:36 ` Peter Zijlstra
2022-06-13 14:38 ` Peter Zijlstra
2022-08-02 6:11 ` Ravi Bangoria
2022-08-22 15:29 ` Peter Zijlstra
2022-08-22 15:43 ` Peter Zijlstra
2022-08-22 16:37 ` Ravi Bangoria
2022-08-23 4:20 ` Ravi Bangoria
2022-08-29 3:54 ` Ravi Bangoria
2022-08-23 6:30 ` Peter Zijlstra
2022-08-29 4:00 ` Ravi Bangoria
2022-08-29 11:58 ` Peter Zijlstra
2022-08-22 16:52 ` Peter Zijlstra
2022-08-23 4:57 ` Ravi Bangoria
2022-06-13 14:41 ` Peter Zijlstra
2022-08-22 14:38 ` Ravi Bangoria
2022-06-13 14:43 ` Peter Zijlstra
2022-08-02 6:16 ` Ravi Bangoria
2022-08-23 8:57 ` Peter Zijlstra
2022-08-24 5:07 ` Ravi Bangoria
2022-08-24 7:27 ` Peter Zijlstra
2022-08-24 7:53 ` Ravi Bangoria
2022-06-13 14:55 ` Peter Zijlstra [this message]
2022-08-02 6:10 ` Ravi Bangoria
2022-08-22 16:44 ` Peter Zijlstra
2022-08-23 4:46 ` Ravi Bangoria
2022-06-17 13:36 ` Peter Zijlstra
2022-08-24 10:13 ` Peter Zijlstra
2022-06-27 4:18 ` Ravi Bangoria
2022-08-02 6:06 ` Ravi Bangoria
2022-08-24 12:15 ` Peter Zijlstra
2022-08-24 14:59 ` Peter Zijlstra
2022-08-25 5:39 ` Ravi Bangoria
2022-08-25 9:17 ` Peter Zijlstra
2022-08-25 11:03 ` Ravi Bangoria
2022-08-02 6:13 ` Ravi Bangoria
2022-08-23 7:10 ` Peter Zijlstra
2022-08-02 6:17 ` Ravi Bangoria
2022-08-23 7:26 ` Peter Zijlstra
2022-08-23 15:14 ` Ravi Bangoria
2022-08-22 14:40 ` Ravi Bangoria
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