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From: Robin Murphy <robin.murphy@arm.com>
To: will@kernel.org, mark.rutland@arm.com
Cc: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] perf/arm-cmn: Hide XP PUB events for CMN-600
Date: Thu, 24 Feb 2022 18:41:21 +0000	[thread overview]
Message-ID: <4c108d39a0513def63acccf09ab52b328f242aeb.1645727871.git.robin.murphy@arm.com> (raw)

CMN-600 doesn't have XP events for the PUB channel, but we missed
the appropriate check to avoid exposing them.

Fixes: 60d1504070c2 ("perf/arm-cmn: Support new IP features")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 drivers/perf/arm-cmn.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c
index 93fd2bcfaf05..ba039a2532ad 100644
--- a/drivers/perf/arm-cmn.c
+++ b/drivers/perf/arm-cmn.c
@@ -595,6 +595,9 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
 		if ((intf & 4) && !(cmn->ports_used & BIT(intf & 3)))
 			return 0;
 
+		if (chan == 4 && cmn->model == CMN600)
+			return 0;
+
 		if ((chan == 5 && cmn->rsp_vc_num < 2) ||
 		    (chan == 6 && cmn->dat_vc_num < 2))
 			return 0;
-- 
2.28.0.dirty


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             reply	other threads:[~2022-02-24 18:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-24 18:41 Robin Murphy [this message]
2022-02-24 18:41 ` [PATCH 2/2] perf/arm-cmn: Update watchpoint format Robin Murphy
2022-03-08 14:11 ` [PATCH 1/2] perf/arm-cmn: Hide XP PUB events for CMN-600 Will Deacon

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