Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Kent Overstreet <kent.overstreet@linux.dev>
To:     linux-kernel@vger.kernel.org, linux-bcache@vger.kernel.org,
        colyli@suse.de
Subject: Time stats library (from bcache/bcachefs) & generic latency instrumentation
Date:   Mon, 29 Aug 2022 12:53:41 -0400
Message-Id: <20220829165344.2958640-1-kent.overstreet@linux.dev>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Hey Coly, this is a fragment from a larger patch series - I wanted to send it
out to you now for review because it changes the bcache sysfs interface for
time_stats.

This series takes the time_stats code from bcachefs (which has some additional
improvements), moves it to lib/ converts bcache to use it (otherwise we get
clashes with the time_stats name) - and uses it for some really cool new latency
instrumentation.

These patches won't apply/build, full patch series for any interested is here:

https://evilpiepirate.org/git/bcachefs.git/log/?h=alloc_tags