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Date:   Mon, 17 Jun 2019 17:49:23 +0200
From:   Oscar Salvador <osalvador@suse.de>
To:     Alastair D'Silva <alastair@d-silva.org>
Cc:     'Michal Hocko' <mhocko@kernel.org>,
        'Alastair D'Silva' <alastair@au1.ibm.com>,
        'Arun KS' <arunks@codeaurora.org>,
        'Mukesh Ojha' <mojha@codeaurora.org>,
        'Logan Gunthorpe' <logang@deltatee.com>,
        'Wei Yang' <richard.weiyang@gmail.com>,
        'Peter Zijlstra' <peterz@infradead.org>,
        'Ingo Molnar' <mingo@kernel.org>, linux-mm@kvack.org,
        'Qian Cai' <cai@lca.pw>,
        'Thomas Gleixner' <tglx@linutronix.de>,
        'Andrew Morton' <akpm@linux-foundation.org>,
        'Mike Rapoport' <rppt@linux.vnet.ibm.com>,
        'Baoquan He' <bhe@redhat.com>,
        'David Hildenbrand' <david@redhat.com>,
        'Josh Poimboeuf' <jpoimboe@redhat.com>,
        'Pavel Tatashin' <pasha.tatashin@soleen.com>,
        'Juergen Gross' <jgross@suse.com>,
        'Oscar Salvador' <osalvador@suse.com>,
        'Jiri Kosina' <jkosina@suse.cz>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/5] mm/hotplug: Avoid RCU stalls when removing large
 amounts of memory
Message-ID: <20190617154923.GB2407@linux>
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On Mon, Jun 17, 2019 at 05:57:16PM +1000, Alastair D'Silva wrote:
> I was getting stalls when removing ~1TB of memory.

Would you mind sharing one of those stalls-splats?
I am bit spectic here because as I Michal pointed out, we do cond_resched
once per section removed.

-- 
Oscar Salvador
SUSE L3