From: Peter Zijlstra <peterz@infradead.org>
To: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Kan Liang <kan.liang@linux.intel.com>,
Andi Kleen <ak@linux.intel.com>,
Eranian Stephane <eranian@google.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Dapeng Mi <dapeng1.mi@intel.com>
Subject: Re: [Patch v3 12/22] perf/x86/intel: Update dyn_constranit base on PEBS event precise level
Date: Tue, 15 Apr 2025 15:53:23 +0200 [thread overview]
Message-ID: <20250415135323.GC4031@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20250415114428.341182-13-dapeng1.mi@linux.intel.com>
On Tue, Apr 15, 2025 at 11:44:18AM +0000, Dapeng Mi wrote:
> arch-PEBS provides CPUIDs to enumerate which counters support PEBS
> sampling and precise distribution PEBS sampling. Thus PEBS constraints
> should be dynamically configured base on these counter and precise
> distribution bitmap instead of defining them statically.
>
> Update event dyn_constraint base on PEBS event precise level.
What if any constraints are there on this? CPUID is virt host
controlled, right, so these could be the most horrible masks ever.
This can land us in EVENT_CONSTRAINT_OVERLAP territory, no?
next prev parent reply other threads:[~2025-04-15 13:53 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-15 11:44 [Patch v3 00/22] Arch-PEBS and PMU supports for Clearwater Forest and Panther Lake Dapeng Mi
2025-04-15 11:44 ` [Patch v3 01/22] perf/x86/intel: Add Panther Lake support Dapeng Mi
2025-04-17 13:01 ` [tip: perf/core] " tip-bot2 for Kan Liang
2025-04-15 11:44 ` [Patch v3 02/22] perf/x86/intel: Add PMU support for Clearwater Forest Dapeng Mi
2025-04-17 13:01 ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-04-15 11:44 ` [Patch v3 03/22] perf/x86/intel: Parse CPUID archPerfmonExt leaves for non-hybrid CPUs Dapeng Mi
2025-04-17 13:01 ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-04-15 11:44 ` [Patch v3 04/22] perf/x86/intel: Decouple BTS initialization from PEBS initialization Dapeng Mi
2025-04-17 13:01 ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-04-15 11:44 ` [Patch v3 05/22] perf/x86/intel: Rename x86_pmu.pebs to x86_pmu.ds_pebs Dapeng Mi
2025-04-17 13:01 ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-04-15 11:44 ` [Patch v3 06/22] perf/x86/intel: Introduce pairs of PEBS static calls Dapeng Mi
2025-04-17 13:00 ` [tip: perf/core] " tip-bot2 for Dapeng Mi
2025-04-15 11:44 ` [Patch v3 07/22] perf/x86/intel: Initialize architectural PEBS Dapeng Mi
2025-04-15 11:44 ` [Patch v3 08/22] perf/x86/intel/ds: Factor out PEBS record processing code to functions Dapeng Mi
2025-04-15 11:44 ` [Patch v3 09/22] perf/x86/intel/ds: Factor out PEBS group " Dapeng Mi
2025-04-15 11:44 ` [Patch v3 10/22] perf/x86/intel: Process arch-PEBS records or record fragments Dapeng Mi
2025-04-15 13:57 ` Peter Zijlstra
2025-04-15 16:09 ` Liang, Kan
2025-04-15 11:44 ` [Patch v3 11/22] perf/x86/intel: Allocate arch-PEBS buffer and initialize PEBS_BASE MSR Dapeng Mi
2025-04-15 13:45 ` Peter Zijlstra
2025-04-16 0:59 ` Mi, Dapeng
2025-04-15 13:48 ` Peter Zijlstra
2025-04-16 1:03 ` Mi, Dapeng
2025-04-15 11:44 ` [Patch v3 12/22] perf/x86/intel: Update dyn_constranit base on PEBS event precise level Dapeng Mi
2025-04-15 13:53 ` Peter Zijlstra [this message]
2025-04-15 16:31 ` Liang, Kan
2025-04-16 1:46 ` Mi, Dapeng
2025-04-16 13:59 ` Liang, Kan
2025-04-17 1:15 ` Mi, Dapeng
2025-04-16 15:32 ` Peter Zijlstra
2025-04-16 19:45 ` Liang, Kan
2025-04-16 19:56 ` Peter Zijlstra
2025-04-22 22:50 ` Liang, Kan
2025-04-15 11:44 ` [Patch v3 13/22] perf/x86/intel: Setup PEBS data configuration and enable legacy groups Dapeng Mi
2025-04-15 11:44 ` [Patch v3 14/22] perf/x86/intel: Add counter group support for arch-PEBS Dapeng Mi
2025-04-15 11:44 ` [Patch v3 15/22] perf/x86/intel: Support SSP register capturing " Dapeng Mi
2025-04-15 14:07 ` Peter Zijlstra
2025-04-16 5:49 ` Mi, Dapeng
2025-04-15 11:44 ` [Patch v3 16/22] perf/core: Support to capture higher width vector registers Dapeng Mi
2025-04-15 14:36 ` Peter Zijlstra
2025-04-16 6:42 ` Mi, Dapeng
2025-04-16 15:53 ` Peter Zijlstra
2025-04-17 2:00 ` Mi, Dapeng
2025-04-22 3:05 ` Mi, Dapeng
2025-04-15 11:44 ` [Patch v3 17/22] perf/x86/intel: Support arch-PEBS vector registers group capturing Dapeng Mi
2025-04-15 11:44 ` [Patch v3 18/22] perf tools: Support to show SSP register Dapeng Mi
2025-04-15 11:44 ` [Patch v3 19/22] perf tools: Enhance arch__intr/user_reg_mask() helpers Dapeng Mi
2025-04-15 11:44 ` [Patch v3 20/22] perf tools: Enhance sample_regs_user/intr to capture more registers Dapeng Mi
2025-04-15 11:44 ` [Patch v3 21/22] perf tools: Support to capture more vector registers (x86/Intel) Dapeng Mi
2025-04-15 11:44 ` [Patch v3 22/22] perf tools/tests: Add vector registers PEBS sampling test Dapeng Mi
2025-04-15 15:21 ` [Patch v3 00/22] Arch-PEBS and PMU supports for Clearwater Forest and Panther Lake Liang, Kan
2025-04-16 7:42 ` Peter Zijlstra
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