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From:   Alexandre Ghiti <alexghiti@rivosinc.com>
To:     Jonathan Corbet <corbet@lwn.net>,
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Cc:     Alexandre Ghiti <alexghiti@rivosinc.com>
Subject: [PATCH v2 01/10] perf: Fix wrong comment about default event_idx
Date:   Fri, 12 May 2023 10:53:12 +0200
Message-Id: <20230512085321.13259-2-alexghiti@rivosinc.com>
In-Reply-To: <20230512085321.13259-1-alexghiti@rivosinc.com>
References: <20230512085321.13259-1-alexghiti@rivosinc.com>
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event_idx default implementation returns 0, not idx + 1.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
 include/linux/perf_event.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index d5628a7b5eaa..56fe43b20966 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -442,7 +442,8 @@ struct pmu {
 
 	/*
 	 * Will return the value for perf_event_mmap_page::index for this event,
-	 * if no implementation is provided it will default to: event->hw.idx + 1.
+	 * if no implementation is provided it will default to 0 (see
+	 * perf_event_idx_default).
 	 */
 	int (*event_idx)		(struct perf_event *event); /*optional */
 
-- 
2.37.2