From: Matt Wu <wuqiang.matt@bytedance.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: <naveen.n.rao@linux.ibm.com>, <anil.s.keshavamurthy@intel.com>,
<davem@davemloft.net>, <mhiramat@kernel.org>, <mingo@kernel.org>,
<peterz@infradead.org>, <linux-kernel@vger.kernel.org>,
<mattwu@163.com>
Subject: Re: [PATCH] kretprobe scalability improvement
Date: Sun, 04 Jul 2021 18:18:19 +0800 [thread overview]
Message-ID: <C46C9460-7FD6-4F6F-9603-84E2A8BA8D8F@bytedance.com> (raw)
On 2021/7/4, 5:17 PM, "Christoph Hellwig" <hch@infradead.org> wrote:
Would it make sense to just reuse kernel/bpf/percpu_freelist.c for
kretprobes?
Thanks for the info. bpf/percpu_freelist does meet the requirements of kretprobe_instances management and is more compact in memory. But the spinlock usage (through locally) looks a bit heavy since it must disable interrupts on local cpu.
I will perform a test to collect some data for comparison.
Regards,
Matt Wu
next reply other threads:[~2021-07-04 10:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-04 10:18 Matt Wu [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-07-03 10:28 [PATCH] kretprobe scalability improvement wuqiang.matt
2021-07-04 9:16 ` Christoph Hellwig
2021-07-04 23:59 ` Masami Hiramatsu
2021-07-05 2:50 ` Matt Wu
2021-07-05 6:59 ` Masami Hiramatsu
2021-07-06 1:21 ` Matt Wu
2021-07-06 16:25 ` Masami Hiramatsu
2021-07-07 3:10 ` Matt Wu
2021-07-07 11:26 ` Masami Hiramatsu
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