linux-kernel - Re: [PATCH] memblock: Neaten logging

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Date:   Fri, 01 Oct 2021 13:34:10 -0700
From:   Joe Perches <joe@...ches.com>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-mm <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] memblock: Neaten logging

On Fri, 2021-10-01 at 09:37 -0700, Mike Rapoport wrote:
> On Thu, Sep 30, 2021 at 06:27:15PM -0700, Joe Perches wrote:
> > On Thu, 2021-09-30 at 14:12 -0700, Mike Rapoport wrote:
> > > Hi Joe,
> > > 
> > > On Wed, Sep 29, 2021 at 09:43:14PM -0700, Joe Perches wrote:
> > > > Use more typical kernel logging styles.
> > > > 
> > > > o Add and use #define pr_fmt KBUILD_MODNAME ": " fmt
> > > 
> > > I don't see it as an improvement. On the contrary, the output becomes
> > > somewhat tautological:
> > 
> > And rather easier to grep as the prefix is constant.
> 
> memblock_ is perfectly greppable

Of course, but only when it's there, 2 instances out of 9.

$ git grep '\bpr_' mm/memblock.c
mm/memblock.c:                  pr_info(fmt, ##__VA_ARGS__);                    \
mm/memblock.c:          pr_warn("Could not allocate %pap bytes of mirrored memory\n",
mm/memblock.c:          pr_err("memblock: Failed to double %s array from %ld to %ld entries !\n",
mm/memblock.c:          pr_warn("Could not allocate %pap bytes of mirrored memory\n",
mm/memblock.c:          pr_warn("%s: No memory registered yet\n", __func__);
mm/memblock.c:  pr_info(" %s.cnt  = 0x%lx\n", type->name, type->cnt);
mm/memblock.c:          pr_info(" %s[%#x]\t[%pa-%pa], %pa bytes%s flags: %#x\n",
mm/memblock.c:  pr_info("MEMBLOCK configuration:\n");
mm/memblock.c:  pr_info(" memory size = %pa reserved size = %pa\n",

cheers, Joe