linux-kernel - [PATCH 03/19] coresight: trbe: Remove buffer disabling in trbe_handle

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Message-Id: <20251201-trbe_buffer_refactor_v1-1-v1-3-7da32b076b28@arm.com>
Date: Mon, 01 Dec 2025 11:21:53 +0000
From: Leo Yan <leo.yan@....com>
To: Suzuki K Poulose <suzuki.poulose@....com>, 
 Mike Leach <mike.leach@...aro.org>, James Clark <james.clark@...aro.org>, 
 Anshuman Khandual <anshuman.khandual@....com>, 
 Yeoreum Yun <yeoreum.yun@....com>, Will Deacon <will@...nel.org>, 
 Mark Rutland <mark.rutland@....com>, Tamas Petz <tamas.petz@....com>, 
 Tamas Zsoldos <tamas.zsoldos@....com>, 
 Arnaldo Carvalho de Melo <acme@...nel.org>, 
 Namhyung Kim <namhyung@...nel.org>, Jiri Olsa <jolsa@...nel.org>, 
 Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>
Cc: coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org, 
 Leo Yan <leo.yan@....com>
Subject: [PATCH 03/19] coresight: trbe: Remove buffer disabling in
 trbe_handle_overflow()

When trbe_handle_overflow() runs, the buffer has already been disabled
and drained, so the duplicate operation is unnecessary.  Remove it.

Signed-off-by: Leo Yan <leo.yan@....com>
---
 drivers/hwtracing/coresight/coresight-trbe.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
index 2f44e4a65e0ee2b2c8fdd06a51ab01fc57f44a4e..f5597bd9b5fba9a8f5053d5823b03380fd468b5c 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.c
+++ b/drivers/hwtracing/coresight/coresight-trbe.c
@@ -1077,7 +1077,6 @@ static int trbe_handle_overflow(struct perf_output_handle *handle)
 		 * is able to detect this with a disconnected handle
 		 * (handle->event = NULL).
 		 */
-		trbe_drain_and_disable_local(buf->cpudata);
 		*this_cpu_ptr(buf->cpudata->drvdata->handle) = NULL;
 		return -EINVAL;
 	}

-- 
2.34.1