From: Shuai Xue <xueshuai@linux.alibaba.com>
To: alexander.shishkin@linux.intel.com, peterz@infradead.org,
james.clark@arm.com, leo.yan@linaro.org
Cc: mingo@redhat.com, baolin.wang@linux.alibaba.com, acme@kernel.org,
mark.rutland@arm.com, jolsa@kernel.org, namhyung@kernel.org,
irogers@google.com, adrian.hunter@intel.com,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
nathan@kernel.org, bpf@vger.kernel.org
Subject: [PATCH v4 2/2] perf record: Update docs regarding the maximum limitation of AUX area
Date: Fri, 4 Aug 2023 15:29:45 +0800 [thread overview]
Message-ID: <20230804072945.85731-3-xueshuai@linux.alibaba.com> (raw)
In-Reply-To: <20230804072945.85731-1-xueshuai@linux.alibaba.com>
The maximum AUX area is limited by the page size of the system. Update
the documentation to reflect this.
Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
---
tools/perf/Documentation/perf-record.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 680396c56bd1..b0ee7b63da0e 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -292,6 +292,9 @@ OPTIONS
Also, by adding a comma, the number of mmap pages for AUX
area tracing can be specified.
+ The maximum AUX area is limited by the page size of the system. For
+ example with 4K pages configured, the maximum is 2GiB.
+
-g::
Enables call-graph (stack chain/backtrace) recording for both
kernel space and user space.
--
2.39.3
next prev parent reply other threads:[~2023-08-04 7:32 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-04 7:29 [PATCH v4 0/2] perf/core: Bail out early if the request AUX area is out of bound Shuai Xue
2023-08-04 7:29 ` [PATCH v4 1/2] " Shuai Xue
2023-08-04 8:59 ` Leo Yan
2023-08-04 11:24 ` Shuai Xue
2023-09-06 3:27 ` Shuai Xue
2023-09-06 7:02 ` Leo Yan
2023-09-06 7:07 ` Shuai Xue
2023-08-04 7:29 ` Shuai Xue [this message]
2023-08-04 8:46 ` [PATCH v4 2/2] perf record: Update docs regarding the maximum limitation of AUX area Leo Yan
2023-08-04 11:47 ` Shuai Xue
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