linux-kernel - [PATCH 01/19] coresight: trbe: Use helpers for checking errata

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Message-Id: <20251201-trbe_buffer_refactor_v1-1-v1-1-7da32b076b28@arm.com>
Date: Mon, 01 Dec 2025 11:21:51 +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 01/19] coresight: trbe: Use helpers for checking errata

Use the existed helpers for checking errata instead of open coded
equivalent.

Signed-off-by: Leo Yan <leo.yan@....com>
---
 drivers/hwtracing/coresight/coresight-trbe.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
index 293715b4ff0eb0abe30f9b477700ca94f81cd4a2..0ddb3db0213cf0014e29decfb79da68b0a351b31 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.c
+++ b/drivers/hwtracing/coresight/coresight-trbe.c
@@ -723,7 +723,7 @@ static unsigned long trbe_get_trace_size(struct perf_output_handle *handle,
 	 * the space we skipped with IGNORE packets. And we are always
 	 * guaranteed to have at least a PAGE_SIZE space in the buffer.
 	 */
-	if (trbe_has_erratum(buf->cpudata, TRBE_WORKAROUND_OVERWRITE_FILL_MODE) &&
+	if (trbe_may_overwrite_in_fill_mode(buf->cpudata) &&
 	    !WARN_ON(size < overwrite_skip))
 		__trbe_pad_buf(buf, start_off, overwrite_skip);
 
@@ -946,7 +946,7 @@ static int trbe_apply_work_around_before_enable(struct trbe_buf *buf)
 	 *  - At trace collection:
 	 *     - Pad the 256bytes skipped above again with IGNORE packets.
 	 */
-	if (trbe_has_erratum(buf->cpudata, TRBE_WORKAROUND_OVERWRITE_FILL_MODE)) {
+	if (trbe_may_overwrite_in_fill_mode(buf->cpudata)) {
 		if (WARN_ON(!IS_ALIGNED(buf->trbe_write, PAGE_SIZE)))
 			return -EINVAL;
 		buf->trbe_hw_base = buf->trbe_write;
@@ -970,7 +970,7 @@ static int trbe_apply_work_around_before_enable(struct trbe_buf *buf)
 	 *     - Adjust the TRBLIMITR.LIMIT to leave the extra PAGE outside
 	 *       the TRBE's range (i.e [TRBBASER, TRBLIMITR.LIMI] ).
 	 */
-	if (trbe_has_erratum(buf->cpudata, TRBE_WORKAROUND_WRITE_OUT_OF_RANGE)) {
+	if (trbe_may_write_out_of_range(buf->cpudata)) {
 		s64 space = buf->trbe_limit - buf->trbe_write;
 		/*
 		 * We must have more than a PAGE_SIZE worth space in the proposed

-- 
2.34.1