From: kbuild test robot <lkp@intel.com>
To: David Hildenbrand <david@redhat.com>
Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org,
linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
David Hildenbrand <david@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Oscar Salvador <osalvador@suse.de>,
Michal Hocko <mhocko@suse.com>,
Pavel Tatashin <pasha.tatashin@soleen.com>,
Dan Williams <dan.j.williams@intel.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Subject: Re: [PATCH v5 04/10] mm/memory_hotplug: Don't access uninitialized memmaps in shrink_zone_span()
Date: Wed, 2 Oct 2019 08:06:58 +0800 [thread overview]
Message-ID: <201910020852.w9neG45x%lkp@intel.com> (raw)
In-Reply-To: <20191001144011.3801-5-david@redhat.com>
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Hi David,
I love your patch! Perhaps something to improve:
[auto build test WARNING on mmotm/master]
url: https://github.com/0day-ci/linux/commits/David-Hildenbrand/mm-memory_hotplug-Shrink-zones-before-removing-memory/20191002-054310
base: git://git.cmpxchg.org/linux-mmotm.git master
config: x86_64-randconfig-b002-201939 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-13) 7.4.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from include/asm-generic/bug.h:5:0,
from arch/x86/include/asm/bug.h:83,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:9,
from mm/memory_hotplug.c:9:
mm/memory_hotplug.c: In function '__remove_zone':
mm/memory_hotplug.c:471:24: error: 'ZONE_DEVICE' undeclared (first use in this function); did you mean 'ZONE_MOVABLE'?
if (zone_idx(zone) == ZONE_DEVICE)
^
include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~
>> mm/memory_hotplug.c:471:2: note: in expansion of macro 'if'
if (zone_idx(zone) == ZONE_DEVICE)
^~
mm/memory_hotplug.c:471:24: note: each undeclared identifier is reported only once for each function it appears in
if (zone_idx(zone) == ZONE_DEVICE)
^
include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~
>> mm/memory_hotplug.c:471:2: note: in expansion of macro 'if'
if (zone_idx(zone) == ZONE_DEVICE)
^~
vim +/if +471 mm/memory_hotplug.c
459
460 static void __remove_zone(struct zone *zone, unsigned long start_pfn,
461 unsigned long nr_pages)
462 {
463 struct pglist_data *pgdat = zone->zone_pgdat;
464 unsigned long flags;
465
466 /*
467 * Zone shrinking code cannot properly deal with ZONE_DEVICE. So
468 * we will not try to shrink the zones - which is okay as
469 * set_zone_contiguous() cannot deal with ZONE_DEVICE either way.
470 */
> 471 if (zone_idx(zone) == ZONE_DEVICE)
472 return;
473
474 pgdat_resize_lock(zone->zone_pgdat, &flags);
475 shrink_zone_span(zone, start_pfn, start_pfn + nr_pages);
476 update_pgdat_span(pgdat);
477 pgdat_resize_unlock(zone->zone_pgdat, &flags);
478 }
479
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2019-10-02 0:08 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-01 14:40 [PATCH v5 00/10] mm/memory_hotplug: Shrink zones before removing memory David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 01/10] mm/memunmap: Use the correct start and end pfn when removing pages from zone David Hildenbrand
2019-10-01 14:57 ` David Hildenbrand
2019-10-01 15:03 ` David Hildenbrand
2019-10-03 16:48 ` Aneesh Kumar K.V
2019-10-04 9:00 ` David Hildenbrand
2019-10-04 9:03 ` David Hildenbrand
2019-10-04 9:33 ` David Hildenbrand
2019-10-05 6:13 ` Aneesh Kumar K.V
2019-10-06 8:13 ` David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 02/10] mm/memmap_init: Update variable name in memmap_init_zone David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 03/10] mm/memory_hotplug: Don't access uninitialized memmaps in shrink_pgdat_span() David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 04/10] mm/memory_hotplug: Don't access uninitialized memmaps in shrink_zone_span() David Hildenbrand
2019-10-01 23:47 ` kbuild test robot
2019-10-02 0:06 ` kbuild test robot [this message]
2019-10-02 7:05 ` David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 05/10] mm/memory_hotplug: Shrink zones when offlining memory David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 06/10] mm/memory_hotplug: Poison memmap in remove_pfn_range_from_zone() David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 07/10] mm/memory_hotplug: We always have a zone in find_(smallest|biggest)_section_pfn David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 08/10] mm/memory_hotplug: Don't check for "all holes" in shrink_zone_span() David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 09/10] mm/memory_hotplug: Drop local variables " David Hildenbrand
2019-10-01 14:40 ` [PATCH v5 10/10] mm/memory_hotplug: Cleanup __remove_pages() David Hildenbrand
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