linux-kernel - [PATCH 0/2] Fix high-order allocations for AUX space

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Message-Id: <20230612052452.53425-1-xueshuai@linux.alibaba.com>
Date:   Mon, 12 Jun 2023 13:24:50 +0800
From:   Shuai Xue <xueshuai@...ux.alibaba.com>
To:     alexander.shishkin@...ux.intel.com, peterz@...radead.org
Cc:     mingo@...hat.com, acme@...nel.org, mark.rutland@....com,
        jolsa@...nel.org, namhyung@...nel.org, irogers@...gle.com,
        adrian.hunter@...el.com, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: [PATCH 0/2] Fix high-order allocations for AUX space

When perf-record with large AUX area, it reveals WARNINGs with __alloc_pages.
Fix with correct MAX_ORDER limit to request higher order allocations so that
larger contiguous areas is allocated. 

Shuai Xue (2):
  perf/core: Bail out early if the request AUX area is out of bound
  perf/ring_buffer: Fix high-order allocations for AUX space with
    correct MAX_ORDER limit

 kernel/events/core.c                     | 10 ++++++++++
 kernel/events/ring_buffer.c              |  4 ++--
 tools/perf/Documentation/perf-record.txt |  3 ++-
 3 files changed, 14 insertions(+), 3 deletions(-)

-- 
1.8.3.1