[PATCH 05/10] powerpc/pmu/fsl: add additional validation to event_init

From: Andrew Murray <andrew.murray@arm.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Will Deacon <will.deacon@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@alien8.de>,
	x86@kernel.org
Cc: linux-alpha@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 05/10] powerpc/pmu/fsl: add additional validation to event_init
Date: Fri, 16 Nov 2018 10:24:08 +0000	[thread overview]
Message-ID: <1542363853-13849-6-git-send-email-andrew.murray@arm.com> (raw)
In-Reply-To: <1542363853-13849-1-git-send-email-andrew.murray@arm.com>

The fsl PMU driver doesn't support host/guest mode exclusion so
let's report this when event_init is called with these exclusion
flags set.

Signed-off-by: Andrew Murray <andrew.murray@arm.com>
---
 arch/powerpc/perf/core-fsl-emb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/perf/core-fsl-emb.c b/arch/powerpc/perf/core-fsl-emb.c
index ba48584..b1cc9d1 100644
--- a/arch/powerpc/perf/core-fsl-emb.c
+++ b/arch/powerpc/perf/core-fsl-emb.c
@@ -559,6 +559,8 @@ static int fsl_emb_pmu_event_init(struct perf_event *event)
 		event->hw.config_base |= PMLCA_FCS;
 	if (event->attr.exclude_idle)
 		return -ENOTSUPP;
+	if (event->attr.exclude_host || event->attr.exclude_guest)
+		return -ENOTSUPP;
 
 	event->hw.last_period = event->hw.sample_period;
 	local64_set(&event->hw.period_left, event->hw.last_period);
-- 
2.7.4

