linux-kernel - [PATCH v2] arm64: perf: remove unsupported events for Cortex-A73

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Date:   Wed, 15 Nov 2017 15:39:26 +0800
From:   Xu YiPing <xuyiping@...ilicon.com>
To:     <xuyiping@...ilicon.com>, <catalin.marinas@....com>,
        <mark.rutland@....com>, <will.deacon@....com>,
        <namhyung@...nel.org>, <jolsa@...hat.com>,
        <alexander.shishkin@...ux.intel.com>, <acme@...nel.org>,
        <mingo@...hat.com>, <peterz@...radead.org>,
        <julien.thierry@....com>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v2] arm64: perf: remove unsupported events for Cortex-A73

bus access read/write events are not supported in A73, based on the
Cortex-A73 TRM r0p2, section 11.9 Events (pages 11-457 to 11-460).

Fixes: 5561b6c5e981 "arm64: perf: add support for Cortex-A73"
Signed-off-by: Xu YiPing <xuyiping@...ilicon.com>
---
 arch/arm64/kernel/perf_event.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 9eaef51..3affca3 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -262,12 +262,6 @@ static const unsigned armv8_a73_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
 
 	[C(L1D)][C(OP_READ)][C(RESULT_ACCESS)]	= ARMV8_IMPDEF_PERFCTR_L1D_CACHE_RD,
 	[C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)]	= ARMV8_IMPDEF_PERFCTR_L1D_CACHE_WR,
-
-	[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)]	= ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD,
-	[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
-
-	[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)]	= ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD,
-	[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
 };
 
 static const unsigned armv8_thunder_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
-- 
2.7.4