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Date: Sun, 24 Apr 2022 22:00:32 -0700 From: Joe Perches <joe@...ches.com> To: Kent Overstreet <kent.overstreet@...il.com> Cc: Matthew Wilcox <willy@...radead.org>, linux-kernel@...r.kernel.org, linux-mm@...ck.org, linux-fsdevel@...r.kernel.org, hch@....de, hannes@...xchg.org, akpm@...ux-foundation.org, linux-clk@...r.kernel.org, linux-tegra@...r.kernel.org, linux-input@...r.kernel.org, roman.gushchin@...ux.dev Subject: Re: [PATCH v2 1/8] lib/printbuf: New data structure for heap-allocated strings On Mon, 2022-04-25 at 00:59 -0400, Kent Overstreet wrote: > On Sun, Apr 24, 2022 at 09:48:58PM -0700, Joe Perches wrote: > > On Mon, 2022-04-25 at 00:19 -0400, Kent Overstreet wrote: > > > On Mon, Apr 25, 2022 at 03:44:34AM +0100, Matthew Wilcox wrote: > > > > On Sun, Apr 24, 2022 at 04:46:03PM -0700, Joe Perches wrote: > > > > > > + * pr_human_readable_u64, pr_human_readable_s64: Print an integer with human > > > > > > + * readable units. > > > > > > > > > > Why not extend vsprintf for this using something like %pH[8|16|32|64] > > > > > or %pH[c|s|l|ll|uc|us|ul|ull] ? > > > > > > > > The %pX extension we have is _cute_, but ultimately a bad idea. It > > > > centralises all kinds of unrelated things in vsprintf.c, eg bdev_name() > > > > and clock() and ip_addr_string(). > > > > > > And it's not remotely discoverable. I didn't realize we had bdev_name() > > > available as a format string until just now or I would've been using it! > > > > Documentation/core-api/printk-formats.rst > > Who has time for docs? The same people that have time to reimplement the already implemented?
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