linux-kernel - [tip: perf/urgent] perf/x86/intel/ds: Add PEBS format 6

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Message-ID: <173503360436.399.14871621667134693686.tip-bot2@tip-bot2>
Date: Tue, 24 Dec 2024 09:46:44 -0000
From: "tip-bot2 for Kan Liang" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Kan Liang <kan.liang@...ux.intel.com>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>, stable@...r.kernel.org,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: perf/urgent] perf/x86/intel/ds: Add PEBS format 6

The following commit has been merged into the perf/urgent branch of tip:

Commit-ID:     b8c3a2502a205321fe66c356f4b70cabd8e1a5fc
Gitweb:        https://git.kernel.org/tip/b8c3a2502a205321fe66c356f4b70cabd8e1a5fc
Author:        Kan Liang <kan.liang@...ux.intel.com>
AuthorDate:    Mon, 16 Dec 2024 12:45:02 -08:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Tue, 17 Dec 2024 17:47:23 +01:00

perf/x86/intel/ds: Add PEBS format 6

The only difference between 5 and 6 is the new counters snapshotting
group, without the following counters snapshotting enabling patches,
it's impossible to utilize the feature in a PEBS record. It's safe to
share the same code path with format 5.

Add format 6, so the end user can at least utilize the legacy PEBS
features.

Fixes: a932aa0e868f ("perf/x86: Add Lunar Lake and Arrow Lake support")
Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: stable@...r.kernel.org
Link: https://lore.kernel.org/r/20241216204505.748363-1-kan.liang@linux.intel.com
---
 arch/x86/events/intel/ds.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 1a4b326..6ba6549 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -2517,6 +2517,7 @@ void __init intel_ds_init(void)
 			x86_pmu.large_pebs_flags |= PERF_SAMPLE_TIME;
 			break;
 
+		case 6:
 		case 5:
 			x86_pmu.pebs_ept = 1;
 			fallthrough;