linux-kernel - Re: mmotm 2020-01-21-13-28 uploaded (convert everything to struct proc

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Date:   Tue, 21 Jan 2020 18:25:34 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     akpm@...ux-foundation.org, broonie@...nel.org, mhocko@...e.cz,
        sfr@...b.auug.org.au, linux-next@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, mm-commits@...r.kernel.org,
        Alexey Dobriyan <adobriyan@...il.com>
Subject: Re: mmotm 2020-01-21-13-28 uploaded (convert everything to struct
 proc_ops)

On 1/21/20 1:29 PM, akpm@...ux-foundation.org wrote:
> The mm-of-the-moment snapshot 2020-01-21-13-28 has been uploaded to
> 
>    http://www.ozlabs.org/~akpm/mmotm/
> 
> mmotm-readme.txt says
> 
> README for mm-of-the-moment:
> 
> http://www.ozlabs.org/~akpm/mmotm/
> 
> This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
> more than once a week.

NULL seems to be misspelled as NUL in the proc-convert-everything-to-struct-proc_ops.patch
patch for kernel/sched/psi.c:

 static int __init psi_proc_init(void)
 {
 	if (psi_enable) {
 		proc_mkdir("pressure", NULL);
-		proc_create("pressure/io", 0, NULL, &psi_io_fops);
-		proc_create("pressure/memory", 0, NULL, &psi_memory_fops);
-		proc_create("pressure/cpu", 0, NULL, &psi_cpu_fops);
+		proc_create("pressure/io", 0, NULL, &psi_io_proc_ops);
+		proc_create("pressure/memory", 0, NUL, &psi_memory_proc_ops); <<<<<<<<<<
+		proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);

also missing a comma above...

 	}
 	return 0;


../kernel/sched/psi.c: In function ‘psi_proc_init’:
../kernel/sched/psi.c:1286:37: error: ‘NUL’ undeclared (first use in this function); did you mean ‘_UL’?
   proc_create("pressure/memory", 0, NUL, &psi_memory_proc_ops);
                                     ^~~
                                     _UL
../kernel/sched/psi.c:1286:37: note: each undeclared identifier is reported only once for each function it appears in
../kernel/sched/psi.c:1287:39: error: invalid operands to binary & (have ‘void *’ and ‘const struct proc_ops’)
   proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);
                                       ^
../kernel/sched/psi.c:1287:3: error: too few arguments to function ‘proc_create’
   proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);
   ^~~~~~~~~~~
In file included from ../kernel/sched/psi.c:133:0:
../include/linux/proc_fs.h:64:24: note: declared here
 struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
                        ^~~~~~~~~~~


-- 
~Randy
Reported-by: Randy Dunlap <rdunlap@...radead.org>