From: Zane Leung <liangzhen@linux.spacemit.com>
To: gregkh@linuxfoundation.org, palmer@dabbelt.com, pjw@kernel.org,
alexander.shishkin@linux.intel.com, suzuki.poulose@arm.com,
mchitale@gmail.com, anup@brainfault.org, irogers@google.com
Cc: mike.leach@arm.com, james.clark@linaro.org, leo.yan@arm.com,
peterz@infradead.org, mingo@redhat.com, namhyung@kernel.org,
mark.rutland@arm.com, jolsa@kernel.org, adrian.hunter@intel.com,
alex@ghiti.fr, atish.patra@linux.dev,
andrew.jones@oss.qualcomm.com, sunilvl@oss.qualcomm.com,
liangzhen@linux.spacemit.com, zhuangqiubin@linux.spacemit.com,
coresight@lists.linaro.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 07/24] gtrace: Parse RISC-V Trace encoder config from perf event
Date: Fri, 23 Oct 2026 11:14:48 +0800 [thread overview]
Message-ID: <20261023031505.2020925-8-liangzhen@linux.spacemit.com> (raw)
In-Reply-To: <20261023031505.2020925-1-liangzhen@linux.spacemit.com>
Parse the hardware trace encoder configurations (timestamp, context,
syncmode, and syncmax) from perf event attributes when operating
in GTRACE_COMPONENT_MODE_PERF.
Signed-off-by: Zane Leung <liangzhen@linux.spacemit.com>
---
.../hwtracing/gtrace/rvtrace-encoder-core.c | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/hwtracing/gtrace/rvtrace-encoder-core.c b/drivers/hwtracing/gtrace/rvtrace-encoder-core.c
index 01925ebdfbde..817535ff9558 100644
--- a/drivers/hwtracing/gtrace/rvtrace-encoder-core.c
+++ b/drivers/hwtracing/gtrace/rvtrace-encoder-core.c
@@ -140,13 +140,33 @@ static int rvtrace_encoder_probe(struct gtrace_component *comp)
return 0;
}
+static void rvtrace_encoder_parse_event_config(struct rvtrace_encoder_priv *priv,
+ struct perf_event *event)
+{
+ u64 config = event->attr.config;
+ enum rvtrace_encoder_syncmode syncmode;
+
+ if (priv->has_context)
+ priv->context = config & BIT(GTRACE_PMU_ATTR_CFG_CONTEXT_SHIFT);
+
+ syncmode = FIELD_GET(GTRACE_PMU_ATTR_CFG_SYNCMODE_MASK, config);
+ if (priv->syncmode_hw[syncmode]) {
+ priv->syncmode = syncmode;
+ priv->syncmax = FIELD_GET(GTRACE_PMU_ATTR_CFG_SYNCMAX_MASK, config);
+ }
+}
+
static int rvtrace_encoder_start(struct gtrace_component *comp)
{
struct rvtrace_encoder_priv *priv = dev_get_drvdata(&comp->dev);
struct gtrace_platform_data *pdata = comp->pdata;
+ struct gtrace_path *path = comp->path;
int ret;
u32 val;
+ if (path->mode == GTRACE_COMPONENT_MODE_PERF)
+ rvtrace_encoder_parse_event_config(priv, path->event);
+
if (priv->srcbits)
rvtrace_encoder_set_srcid(pdata, priv->srcbits);
--
2.34.1
next prev parent reply other threads:[~2026-10-23 3:16 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-23 3:14 [RFC PATCH 00/24] Add Linux RISC-V trace support via the gtrace framework Zane Leung
2026-10-23 3:14 ` [PATCH 01/24] gtrace: Move connection release into component unregister Zane Leung
2026-10-23 3:14 ` [PATCH 02/24] gtrace: Initial implementation of gtrace sysfs framework Zane Leung
2026-10-23 3:14 ` [PATCH 03/24] gtrace: Drop trace format field and helper function Zane Leung
2026-10-23 3:14 ` [PATCH 04/24] gtrace: Add RISC-V trace encoder sysfs support Zane Leung
2026-10-23 3:14 ` [PATCH 05/24] gtrace: Introduce some PMU format attributes Zane Leung
2026-10-23 3:14 ` [PATCH 06/24] gtrace: Replace owner PID with perf_event pointer in gtrace_path Zane Leung
2026-10-23 3:14 ` Zane Leung [this message]
2026-10-23 3:14 ` [PATCH 08/24] gtrace: add perf symlink support for gtrace components Zane Leung
2026-10-23 3:14 ` [PATCH 09/24] gtrace: Add port-level start/stop driver callbacks Zane Leung
2026-10-23 3:14 ` [PATCH 10/24] gtrace: Add RISC-V trace funnel driver Zane Leung
2026-10-23 3:14 ` [PATCH 11/24] gtrace: Add RISC-V trace timestamp support Zane Leung
2026-10-23 3:14 ` [PATCH 12/24] gtrace: Add RISC-V trace ATB bridge driver Zane Leung
2026-10-23 3:14 ` [PATCH 13/24] gtrace: Add CoreSight platform core APIs Zane Leung
2026-10-23 3:14 ` [PATCH 14/24] gtrace: Add CoreSight funnel driver Zane Leung
2026-10-23 3:14 ` [PATCH 15/24] gtrace: Only copy AUX data from the path sink Zane Leung
2026-10-23 3:14 ` [PATCH 16/24] perf: Flag whether gtrace AUX data carries CoreSight framing Zane Leung
2026-10-23 3:14 ` [PATCH 17/24] gtrace: Unify default sink selection across CPUs in perf setup Zane Leung
2026-10-23 3:14 ` [PATCH 18/24] gtrace: Add sink-specific buffer alloc/free callbacks Zane Leung
2026-10-23 3:15 ` [PATCH 19/24] gtrace: Add setup_sysfs_buf callback to setup sysfs sink buffer Zane Leung
2026-10-23 3:15 ` [PATCH 20/24] gtrace: Add CoreSight TMC driver support Zane Leung
2026-10-23 3:15 ` [PATCH 21/24] perf tools: riscv: making gtrace PMU listable Zane Leung
2026-10-23 3:15 ` [PATCH 22/24] perf tools: Add Nexus RISC-V Trace decoder Zane Leung
2026-10-23 3:15 ` [PATCH 23/24] perf tools: gtrace: Record and parse trace encoder metadata Zane Leung
2026-10-23 3:15 ` [PATCH 24/24] perf tools: gtrace: Add AUX trace decoder and branch sample synthesis Zane Leung
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20261023031505.2020925-8-liangzhen@linux.spacemit.com \
--to=liangzhen@linux.spacemit.com \
--cc=adrian.hunter@intel.com \
--cc=alex@ghiti.fr \
--cc=alexander.shishkin@linux.intel.com \
--cc=andrew.jones@oss.qualcomm.com \
--cc=anup@brainfault.org \
--cc=atish.patra@linux.dev \
--cc=coresight@lists.linaro.org \
--cc=gregkh@linuxfoundation.org \
--cc=irogers@google.com \
--cc=james.clark@linaro.org \
--cc=jolsa@kernel.org \
--cc=leo.yan@arm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=mark.rutland@arm.com \
--cc=mchitale@gmail.com \
--cc=mike.leach@arm.com \
--cc=mingo@redhat.com \
--cc=namhyung@kernel.org \
--cc=palmer@dabbelt.com \
--cc=peterz@infradead.org \
--cc=pjw@kernel.org \
--cc=sunilvl@oss.qualcomm.com \
--cc=suzuki.poulose@arm.com \
--cc=zhuangqiubin@linux.spacemit.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®