linux-kernel - Re: [PATCH 2/3] mm/slub: Add Support for free path information of an object.

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Date:   Fri, 19 Mar 2021 16:23:41 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     Maninder Singh <maninder1.s@...sung.com>, linux@...linux.org.uk,
        cl@...ux.com, penberg@...nel.org, rientjes@...gle.com,
        iamjoonsoo.kim@....com, akpm@...ux-foundation.org,
        0x7f454c46@...il.com, viro@...iv.linux.org.uk,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, a.sahrawat@...sung.com,
        Vaneet Narang <v.narang@...sung.com>
Subject: Re: [PATCH 2/3] mm/slub: Add Support for free path information of an
 object.

On Thu, Mar 18, 2021 at 01:35:37PM +0100, Vlastimil Babka wrote:
> On 3/16/21 11:37 AM, Maninder Singh wrote:
> > Adding support for inforamtion of free path along with allocation
> > path of an object:
> > 
> > slab kmalloc-64 start c8ab0140 data offset 64 pointer offset 0 size 64 allocated at meminfo_proc_show+0x40/0x4fc
> > [   20.192078]     meminfo_proc_show+0x40/0x4fc
> > [   20.192263]     seq_read_iter+0x18c/0x4c4
> > [   20.192430]     proc_reg_read_iter+0x84/0xac
> > [   20.192617]     generic_file_splice_read+0xe8/0x17c
> > [   20.192816]     splice_direct_to_actor+0xb8/0x290
> > [   20.193008]     do_splice_direct+0xa0/0xe0
> > [   20.193185]     do_sendfile+0x2d0/0x438
> > [   20.193345]     sys_sendfile64+0x12c/0x140
> > [   20.193523]     ret_fast_syscall+0x0/0x58
> > [   20.193695]     0xbeeacde4
> > [   20.193822]  Free path:
> > [   20.193935]     meminfo_proc_show+0x5c/0x4fc
> > [   20.194115]     seq_read_iter+0x18c/0x4c4
> > [   20.194285]     proc_reg_read_iter+0x84/0xac
> > [   20.194475]     generic_file_splice_read+0xe8/0x17c
> > [   20.194685]     splice_direct_to_actor+0xb8/0x290
> > [   20.194870]     do_splice_direct+0xa0/0xe0
> > [   20.195014]     do_sendfile+0x2d0/0x438
> > [   20.195174]     sys_sendfile64+0x12c/0x140
> > [   20.195336]     ret_fast_syscall+0x0/0x58
> > [   20.195491]     0xbeeacde4
> > 
> > Co-developed-by: Vaneet Narang <v.narang@...sung.com>
> > Signed-off-by: Vaneet Narang <v.narang@...sung.com>
> > Signed-off-by: Maninder Singh <maninder1.s@...sung.com>
> 
> Acked-by: Vlastimil Babka <vbabka@...e.cz>

I have queued 1/3 and 2/3, thank you both!

Would any of the ARM folks be willing to ack 3/3?

							Thanx, Paul