| Commit message (Collapse) | Author | Age | Files | Lines |
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull infiniband changes from Roland Dreier:
"Second batch of changes for the 3.7 merge window:
- Late-breaking fix for IPoIB on mlx4 SR-IOV VFs.
- Fix for IPoIB build breakage with CONFIG_INFINIBAND_IPOIB_CM=n (new
netlink config changes are to blame).
- Make sure retry count values are in range in RDMA CM.
- A few nes hardware driver fixes and cleanups.
- Have iSER initiator use >1 interrupt vectors if available."
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
RDMA/cma: Check that retry count values are in range
IB/iser: Add more RX CQs to scale out processing of SCSI responses
RDMA/nes: Bump the version number of nes driver
RDMA/nes: Remove unused module parameter "send_first"
RDMA/nes: Remove unnecessary if-else statement
RDMA/nes: Add missing break to switch.
mlx4_core: Adjust flow steering attach wrapper so that IB works on SR-IOV VFs
IPoIB: Fix build with CONFIG_INFINIBAND_IPOIB_CM=n
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Bumpthe version of the nes driver to reflect recent fixes.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Remove unnecessary if-else statement -- we do the same thing either way.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Static code analyzer cppcheck points out a missing break.
Reported-by: David Binderman <dcb314@hotmail.com>
Addresses: <https://bugzilla.kernel.org/show_bug.cgi?id=47671>
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Currently, the InfiniBand stack does not support flow steering at the
verbs level -- the only usage of flow steering in the IB driver is for
L2 multicast attaches. We need to add the IB case to procedure
mlx4_QP_FLOW_STEERING_ATTACH_wrapper() to allow IPoIB to work on VFs
on ConnectX-3 when flow steering is enabled.
Currently, the IB case in mlx4_QP_FLOW_STEERING_ATTACH_wrapper() is missing,
so the procedure returns -EINVAL and IPoIB on VFs breaks.
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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RX/TX CQs will now be selected from a per HCA pool. For the RX flow
this has the effect of using different interrupt vectors when using
low level drivers (such as mlx4) that map the "vector" param provided
by the ULP on CQ creation to a dedicated IRQ/MSI-X vector. This
allows the RX flow processing of IO responses to be distributed across
multiple CPUs.
QPs (--> iSER sessions) are assigned to CQs in round robin order using
the CQ with the minimum number of sessions attached to it.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Alex Tabachnik <alext@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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With the new netlink support in commit 862096a8bbf8 ("IB/ipoib: Add more
rtnl_link_ops callbacks") we need ipoib_set_mode() to be available even
if connected mode isn't built. Move the function from ipoib_cm.c to
ipoib_main.c (and make a few CM-related macros available unconditonally).
This fixes the build error
drivers/built-in.o: In function 'ipoib_changelink':
ipoib_netlink.c:(.text+0x6a5fc9): undefined reference to 'ipoib_set_mode'
ipoib_netlink.c:(.text+0x6a5fe3): undefined reference to 'ipoib_set_mode'
when CONFIG_INFINIBAND_IPOIB_CM isn't set.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Reported-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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The retry_count and rnr_retry_count connection parameters are both
3-bit values. Check that the values are in range and reduce if
they're not.
This fixes a problem reported by Doug Ledford <dledford@redhat.com>
that resulted in the userspace rping test (part of the librdmacm
samples) failing to run over Intel IB HCAs.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
[ Use min_t() to avoid warnings about type mismatch. - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Pull UAPI disintegration fixes from David Howells:
"There are three main parts:
(1) I found I needed some more fixups in the wake of testing Arm64
(some asm/unistd.h files had weird guards that caused problems -
mostly in arches for which I don't have a compiler) and some
__KERNEL__ splitting needed to take place in Arm64.
(2) I found that c6x was missing some __KERNEL__ guards in its
asm/signal.h. Mark Salter pointed me at a tree with a patch to
remove that file entirely and use the asm-generic variant instead.
(3) Lastly, m68k turned out to have a header installation problem due
to it lacking a kvm_para.h file.
The conditional installation bits for linux/kvm_para.h, linux/kvm.h
and linux/a.out.h weren't very well specified - and didn't work if
an arch didn't have the asm/ version of that file, but there *was*
an asm-generic/ version.
It seems the "ifneq $((wildcard ...),)" for each of those three
headers in include/kernel/Kbuild is invoked twice during header
installation, and the second time it matches on the just installed
asm-generic/kvm_para.h file and thus incorrectly installs
linux/kvm_para.h as well.
Most arches actually have an asm/kvm_para.h, so this wasn't
detectable in those."
* 'uapi-prep' of git://git.infradead.org/users/dhowells/linux-headers:
UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
c6x: remove c6x signal.h
UAPI: Split compound conditionals containing __KERNEL__ in Arm64
UAPI: Fix the guards on various asm/unistd.h files
c6x: make dsk6455 the default config
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The m68k arch doesn't have a kvm_para.h (unlike most or maybe all other
arches), but there is one in asm-generic. This means that:
ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
$(srctree)/include/asm-$(SRCARCH)/kvm_para.h \
$(INSTALL_HDR_PATH)/include/asm-*/kvm_para.h),)
header-y += kvm_para.h
endif
gets it wrong because it is invoked twice during the header installation - and
on the second occasion, asm-generic/kvm_para.h has been installed in usr/,
thus triggering a attempt to install asm-m68k/kvm_para.h which will fail.
There are three headers with this sort of conditional logic: a.out.h, kvm.h
and kvm_para.h. For all three of them, change the logic to be something like:
ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
$(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm_para.h),)
which finds the header in only the two places it should be found, and doesn't
get incorrectly triggered by the installation of asm-generic's version.
Signed-off-by: David Howells <dhowells@redhat.com>
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Avoid later problems with c6x's asm/signal.h lacking __KERNEL__ guards.
Signed-off-by: David Howells <dhowells@redhat.com>
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The c6x signal.h includes the asm-generic version and provides
a couple of extern declarations. David Howells pointed out that
the externs needed to be protected by ifdef __KERNEL__. As it
turns out, the externs aren't really needed since the functions
are only called from asm code. So this patch gets rid of the
c6x signal.h and uses just the asm-generic version.
Signed-off-by: Mark Salter <msalter@redhat.com>
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C6X had no defconfig, so DSK6455 is as good as any.
Signed-off-by: Mark Salter <msalter@redhat.com>
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Split compound conditionals containing __KERNEL__ in Arm64 where possible to
make it easier for the UAPI disintegration scripts to handle them.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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asm-generic/unistd.h and a number of asm/unistd.h files have been given
reinclusion guards that allow the guard to be overridden if __SYSCALL is
defined. Unfortunately, these files define __SYSCALL and don't undefine it
when they've finished with it, thus rendering the guard ineffective.
The reason for this override is to allow the file to be #included multiple
times with different settings on __SYSCALL for purposes like generating syscall
tables.
The following guards are problematic:
arch/arm64/include/asm/unistd.h:#if !defined(__ASM_UNISTD_H) || defined(__SYSCALL)
arch/arm64/include/asm/unistd32.h:#if !defined(__ASM_UNISTD32_H) || defined(__SYSCALL)
arch/c6x/include/asm/unistd.h:#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL)
arch/hexagon/include/asm/unistd.h:#if !defined(_ASM_HEXAGON_UNISTD_H) || defined(__SYSCALL)
arch/openrisc/include/asm/unistd.h:#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL)
arch/score/include/asm/unistd.h:#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
arch/tile/include/asm/unistd.h:#if !defined(_ASM_TILE_UNISTD_H) || defined(__SYSCALL)
arch/unicore32/include/asm/unistd.h:#if !defined(__UNICORE_UNISTD_H__) || defined(__SYSCALL)
include/asm-generic/unistd.h:#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL)
On the assumption that the guards' ineffectiveness has passed unnoticed, just
remove these guards entirely.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
Pull SLAB changes from Pekka Enberg:
"New and noteworthy:
* More SLAB allocator unification patches from Christoph Lameter and
others. This paves the way for slab memcg patches that hopefully
will land in v3.8.
* SLAB tracing improvements from Ezequiel Garcia.
* Kernel tainting upon SLAB corruption from Dave Jones.
* Miscellanous SLAB allocator bug fixes and improvements from various
people."
* 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux: (43 commits)
slab: Fix build failure in __kmem_cache_create()
slub: init_kmem_cache_cpus() and put_cpu_partial() can be static
mm/slab: Fix kmem_cache_alloc_node_trace() declaration
Revert "mm/slab: Fix kmem_cache_alloc_node_trace() declaration"
mm, slob: fix build breakage in __kmalloc_node_track_caller
mm/slab: Fix kmem_cache_alloc_node_trace() declaration
mm/slab: Fix typo _RET_IP -> _RET_IP_
mm, slub: Rename slab_alloc() -> slab_alloc_node() to match SLAB
mm, slab: Rename __cache_alloc() -> slab_alloc()
mm, slab: Match SLAB and SLUB kmem_cache_alloc_xxx_trace() prototype
mm, slab: Replace 'caller' type, void* -> unsigned long
mm, slob: Add support for kmalloc_track_caller()
mm, slab: Remove silly function slab_buffer_size()
mm, slob: Use NUMA_NO_NODE instead of -1
mm, sl[au]b: Taint kernel when we detect a corrupted slab
slab: Only define slab_error for DEBUG
slab: fix the DEADLOCK issue on l3 alien lock
slub: Zero initial memory segment for kmem_cache and kmem_cache_node
Revert "mm/sl[aou]b: Move sysfs_slab_add to common"
mm/sl[aou]b: Move kmem_cache refcounting to common code
...
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This bug was introduced in commit 4052147 ("mm, slab: Match SLAB and
SLUB kmem_cache_alloc_xxx_trace() prototype").
Cc: David Rientjes <rientjes@google.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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This reverts commit 1e5965bf1f018cc30a4659fa3f1a40146e4276f6. Ezequiel
Garcia has a better fix.
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On Sat, 8 Sep 2012, Ezequiel Garcia wrote:
> @@ -454,15 +455,35 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node)
> gfp |= __GFP_COMP;
> ret = slob_new_pages(gfp, order, node);
>
> - trace_kmalloc_node(_RET_IP_, ret,
> + trace_kmalloc_node(caller, ret,
> size, PAGE_SIZE << order, gfp, node);
> }
>
> kmemleak_alloc(ret, size, 1, gfp);
> return ret;
> }
> +
> +void *__kmalloc_node(size_t size, gfp_t gfp, int node)
> +{
> + return __do_kmalloc_node(size, gfp, node, _RET_IP_);
> +}
> EXPORT_SYMBOL(__kmalloc_node);
>
> +#ifdef CONFIG_TRACING
> +void *__kmalloc_track_caller(size_t size, gfp_t gfp, unsigned long caller)
> +{
> + return __do_kmalloc_node(size, gfp, NUMA_NO_NODE, caller);
> +}
> +
> +#ifdef CONFIG_NUMA
> +void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
> + int node, unsigned long caller)
> +{
> + return __do_kmalloc_node(size, gfp, node, caller);
> +}
> +#endif
This breaks Pekka's slab/next tree with this:
mm/slob.c: In function '__kmalloc_node_track_caller':
mm/slob.c:488: error: 'gfp' undeclared (first use in this function)
mm/slob.c:488: error: (Each undeclared identifier is reported only once
mm/slob.c:488: error: for each function it appears in.)
mm, slob: fix build breakage in __kmalloc_node_track_caller
"mm, slob: Add support for kmalloc_track_caller()" breaks the build
because gfp is undeclared. Fix it.
Acked-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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The bug was introduced in commit 4052147c0afa ("mm, slab: Match SLAB
and SLUB kmem_cache_alloc_xxx_trace() prototype").
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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The bug was introduced by commit 7c0cb9c64f83 ("mm, slab: Replace
'caller' type, void* -> unsigned long").
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Fix up a trivial conflict with NUMA_NO_NODE cleanups.
Conflicts:
mm/slob.c
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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On Tue, 11 Sep 2012, Stephen Rothwell wrote:
> After merging the final tree, today's linux-next build (sparc64 defconfig)
> produced this warning:
>
> mm/slab.c:808:13: warning: '__slab_error' defined but not used [-Wunused-function]
>
> Introduced by commit 945cf2b6199b ("mm/sl[aou]b: Extract a common
> function for kmem_cache_destroy"). All uses of slab_error() are now
> guarded by DEBUG.
There is no use case left for slab builds without DEBUG.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Tony Luck reported the following problem on IA-64:
Worked fine yesterday on next-20120905, crashes today. First sign of
trouble was an unaligned access, then a NULL dereference. SL*B related
bits of my config:
CONFIG_SLUB_DEBUG=y
# CONFIG_SLAB is not set
CONFIG_SLUB=y
CONFIG_SLABINFO=y
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
And he console log.
PID hash table entries: 4096 (order: 1, 32768 bytes)
Dentry cache hash table entries: 262144 (order: 7, 2097152 bytes)
Inode-cache hash table entries: 131072 (order: 6, 1048576 bytes)
Memory: 2047920k/2086064k available (13992k code, 38144k reserved,
6012k data, 880k init)
kernel unaligned access to 0xca2ffc55fb373e95, ip=0xa0000001001be550
swapper[0]: error during unaligned kernel access
-1 [1]
Modules linked in:
Pid: 0, CPU 0, comm: swapper
psr : 00001010084a2018 ifs : 800000000000060f ip :
[<a0000001001be550>] Not tainted (3.6.0-rc4-zx1-smp-next-20120906)
ip is at new_slab+0x90/0x680
unat: 0000000000000000 pfs : 000000000000060f rsc : 0000000000000003
rnat: 9666960159966a59 bsps: a0000001001441c0 pr : 9666960159965a59
ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c8a70433f
csd : 0000000000000000 ssd : 0000000000000000
b0 : a0000001001be500 b6 : a00000010112cb20 b7 : a0000001011660a0
f6 : 0fff7f0f0f0f0e54f0000 f7 : 0ffe8c5c1000000000000
f8 : 1000d8000000000000000 f9 : 100068800000000000000
f10 : 10005f0f0f0f0e54f0000 f11 : 1003e0000000000000078
r1 : a00000010155eef0 r2 : 0000000000000000 r3 : fffffffffffc1638
r8 : e0000040600081b8 r9 : ca2ffc55fb373e95 r10 : 0000000000000000
r11 : e000004040001646 r12 : a000000101287e20 r13 : a000000101280000
r14 : 0000000000004000 r15 : 0000000000000078 r16 : ca2ffc55fb373e75
r17 : e000004040040000 r18 : fffffffffffc1646 r19 : e000004040001646
r20 : fffffffffffc15f8 r21 : 000000000000004d r22 : a00000010132fa68
r23 : 00000000000000ed r24 : 0000000000000000 r25 : 0000000000000000
r26 : 0000000000000001 r27 : a0000001012b8500 r28 : a00000010135f4a0
r29 : 0000000000000000 r30 : 0000000000000000 r31 : 0000000000000001
Unable to handle kernel NULL pointer dereference (address
0000000000000018)
swapper[0]: Oops 11003706212352 [2]
Modules linked in:
Pid: 0, CPU 0, comm: swapper
psr : 0000121008022018 ifs : 800000000000cc18 ip :
[<a0000001004dc8f1>] Not tainted (3.6.0-rc4-zx1-smp-next-20120906)
ip is at __copy_user+0x891/0x960
unat: 0000000000000000 pfs : 0000000000000813 rsc : 0000000000000003
rnat: 0000000000000000 bsps: 0000000000000000 pr : 9666960159961765
ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c0270033f
csd : 0000000000000000 ssd : 0000000000000000
b0 : a00000010004b550 b6 : a00000010004b740 b7 : a00000010000c750
f6 : 000000000000000000000 f7 : 1003e9e3779b97f4a7c16
f8 : 1003e0a00000010001550 f9 : 100068800000000000000
f10 : 10005f0f0f0f0e54f0000 f11 : 1003e0000000000000078
r1 : a00000010155eef0 r2 : a0000001012870b0 r3 : a0000001012870b8
r8 : 0000000000000298 r9 : 0000000000000013 r10 : 0000000000000000
r11 : 9666960159961a65 r12 : a000000101287010 r13 : a000000101280000
r14 : a000000101287068 r15 : a000000101287080 r16 : 0000000000000298
r17 : 0000000000000010 r18 : 0000000000000018 r19 : a000000101287310
r20 : 0000000000000290 r21 : 0000000000000000 r22 : 0000000000000000
r23 : a000000101386f58 r24 : 0000000000000000 r25 : 000000007fffffff
r26 : a000000101287078 r27 : a0000001013c69b0 r28 : 0000000000000000
r29 : 0000000000000014 r30 : 0000000000000000 r31 : 0000000000000813
Sedat Dilek and Hugh Dickins reported similar problems as well.
Earlier patches in the common set moved the zeroing of the kmem_cache
structure into common code. See "Move allocation of kmem_cache into
common code".
The allocation for the two special structures is still done from SLUB
specific code but no zeroing is done since the cache creation functions
used to zero. This now needs to be updated so that the structures are
zeroed during allocation in kmem_cache_init(). Otherwise random pointer
values may be followed.
Reported-by: Tony Luck <tony.luck@intel.com>
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reported-by: Hugh Dickins <hughd@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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This reverts commit 96d17b7be0a9849d381442030886211dbb2a7061 which
caused the following errors at boot:
[ 1.114885] kobject (ffff88001a802578): tried to init an initialized object, something is seriously wrong.
[ 1.114885] Pid: 1, comm: swapper/0 Tainted: G W 3.6.0-rc1+ #6
[ 1.114885] Call Trace:
[ 1.114885] [<ffffffff81273f37>] kobject_init+0x87/0xa0
[ 1.115555] [<ffffffff8127426a>] kobject_init_and_add+0x2a/0x90
[ 1.115555] [<ffffffff8127c870>] ? sprintf+0x40/0x50
[ 1.115555] [<ffffffff81124c60>] sysfs_slab_add+0x80/0x210
[ 1.115555] [<ffffffff81100175>] kmem_cache_create+0xa5/0x250
[ 1.115555] [<ffffffff81cf24cd>] ? md_init+0x144/0x144
[ 1.115555] [<ffffffff81cf25b6>] local_init+0xa4/0x11b
[ 1.115555] [<ffffffff81cf24e1>] dm_init+0x14/0x45
[ 1.115836] [<ffffffff810001ba>] do_one_initcall+0x3a/0x160
[ 1.116834] [<ffffffff81cc2c90>] kernel_init+0x133/0x1b7
[ 1.117835] [<ffffffff81cc25c4>] ? do_early_param+0x86/0x86
[ 1.117835] [<ffffffff8171aff4>] kernel_thread_helper+0x4/0x10
[ 1.118401] [<ffffffff81cc2b5d>] ? start_kernel+0x33f/0x33f
[ 1.119832] [<ffffffff8171aff0>] ? gs_change+0xb/0xb
[ 1.120325] ------------[ cut here ]------------
[ 1.120835] WARNING: at fs/sysfs/dir.c:536 sysfs_add_one+0xc1/0xf0()
[ 1.121437] sysfs: cannot create duplicate filename '/kernel/slab/:t-0000016'
[ 1.121831] Modules linked in:
[ 1.122138] Pid: 1, comm: swapper/0 Tainted: G W 3.6.0-rc1+ #6
[ 1.122831] Call Trace:
[ 1.123074] [<ffffffff81195ce1>] ? sysfs_add_one+0xc1/0xf0
[ 1.123833] [<ffffffff8103adfa>] warn_slowpath_common+0x7a/0xb0
[ 1.124405] [<ffffffff8103aed1>] warn_slowpath_fmt+0x41/0x50
[ 1.124832] [<ffffffff81195ce1>] sysfs_add_one+0xc1/0xf0
[ 1.125337] [<ffffffff81195eb3>] create_dir+0x73/0xd0
[ 1.125832] [<ffffffff81196221>] sysfs_create_dir+0x81/0xe0
[ 1.126363] [<ffffffff81273d3d>] kobject_add_internal+0x9d/0x210
[ 1.126832] [<ffffffff812742a3>] kobject_init_and_add+0x63/0x90
[ 1.127406] [<ffffffff81124c60>] sysfs_slab_add+0x80/0x210
[ 1.127832] [<ffffffff81100175>] kmem_cache_create+0xa5/0x250
[ 1.128384] [<ffffffff81cf24cd>] ? md_init+0x144/0x144
[ 1.128833] [<ffffffff81cf25b6>] local_init+0xa4/0x11b
[ 1.129831] [<ffffffff81cf24e1>] dm_init+0x14/0x45
[ 1.130305] [<ffffffff810001ba>] do_one_initcall+0x3a/0x160
[ 1.130831] [<ffffffff81cc2c90>] kernel_init+0x133/0x1b7
[ 1.131351] [<ffffffff81cc25c4>] ? do_early_param+0x86/0x86
[ 1.131830] [<ffffffff8171aff4>] kernel_thread_helper+0x4/0x10
[ 1.132392] [<ffffffff81cc2b5d>] ? start_kernel+0x33f/0x33f
[ 1.132830] [<ffffffff8171aff0>] ? gs_change+0xb/0xb
[ 1.133315] ---[ end trace 2703540871c8fab7 ]---
[ 1.133830] ------------[ cut here ]------------
[ 1.134274] WARNING: at lib/kobject.c:196 kobject_add_internal+0x1f5/0x210()
[ 1.134829] kobject_add_internal failed for :t-0000016 with -EEXIST, don't try to register things with the same name in the same directory.
[ 1.135829] Modules linked in:
[ 1.136135] Pid: 1, comm: swapper/0 Tainted: G W 3.6.0-rc1+ #6
[ 1.136828] Call Trace:
[ 1.137071] [<ffffffff81273e95>] ? kobject_add_internal+0x1f5/0x210
[ 1.137830] [<ffffffff8103adfa>] warn_slowpath_common+0x7a/0xb0
[ 1.138402] [<ffffffff8103aed1>] warn_slowpath_fmt+0x41/0x50
[ 1.138830] [<ffffffff811955a3>] ? release_sysfs_dirent+0x73/0xf0
[ 1.139419] [<ffffffff81273e95>] kobject_add_internal+0x1f5/0x210
[ 1.139830] [<ffffffff812742a3>] kobject_init_and_add+0x63/0x90
[ 1.140429] [<ffffffff81124c60>] sysfs_slab_add+0x80/0x210
[ 1.140830] [<ffffffff81100175>] kmem_cache_create+0xa5/0x250
[ 1.141829] [<ffffffff81cf24cd>] ? md_init+0x144/0x144
[ 1.142307] [<ffffffff81cf25b6>] local_init+0xa4/0x11b
[ 1.142829] [<ffffffff81cf24e1>] dm_init+0x14/0x45
[ 1.143307] [<ffffffff810001ba>] do_one_initcall+0x3a/0x160
[ 1.143829] [<ffffffff81cc2c90>] kernel_init+0x133/0x1b7
[ 1.144352] [<ffffffff81cc25c4>] ? do_early_param+0x86/0x86
[ 1.144829] [<ffffffff8171aff4>] kernel_thread_helper+0x4/0x10
[ 1.145405] [<ffffffff81cc2b5d>] ? start_kernel+0x33f/0x33f
[ 1.145828] [<ffffffff8171aff0>] ? gs_change+0xb/0xb
[ 1.146313] ---[ end trace 2703540871c8fab8 ]---
Conflicts:
mm/slub.c
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Get rid of the refcount stuff in the allocators and do that part of
kmem_cache management in the common code.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Do the initial settings of the fields in common code. This will allow us
to push more processing into common code later and improve readability.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Shift the allocations to common code. That way the allocation and
freeing of the kmem_cache structures is handled by common code.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Simplify locking by moving the slab_add_sysfs after all locks have been
dropped. Eases the upcoming move to provide sysfs support for all
allocators.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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The slab aliasing logic causes some strange contortions in slub. So add
a call to deal with aliases to slab_common.c but disable it for other
slab allocators by providng stubs that fail to create aliases.
Full general support for aliases will require additional cleanup passes
and more standardization of fields in kmem_cache.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Duping of the slabname has to be done by each slab. Moving this code to
slab_common avoids duplicate implementations.
With this patch we have common string handling for all slab allocators.
Strings passed to kmem_cache_create() are copied internally. Subsystems
can create temporary strings to create slab caches.
Slabs allocated in early states of bootstrap will never be freed (and
those can never be freed since they are essential to slab allocator
operations). During bootstrap we therefore do not have to worry about
duping names.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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What is done there can be done in __kmem_cache_shutdown.
This affects RCU handling somewhat. On rcu free all slab allocators do
not refer to other management structures than the kmem_cache structure.
Therefore these other structures can be freed before the rcu deferred
free to the page allocator occurs.
Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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The freeing action is basically the same in all slab allocators.
Move to the common kmem_cache_destroy() function.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Make all allocators use the "kmem_cache" slabname for the "kmem_cache"
structure.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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kmem_cache_destroy does basically the same in all allocators.
Extract common code which is easy since we already have common mutex
handling.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Move the code to append the new kmem_cache to the list of slab caches to
the kmem_cache_create code in the shared code.
This is possible now since the acquisition of the mutex was moved into
kmem_cache_create().
Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Instead of using s == NULL use an errorcode. This allows much more
detailed diagnostics as to what went wrong. As we add more functionality
from the slab allocators to the common kmem_cache_create() function we will
also add more error conditions.
Print the error code during the panic as well as in a warning if the module
can handle failure. The API for kmem_cache_create() currently does not allow
the returning of an error code. Return NULL but log the cause of the problem
in the syslog.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Do not use kmalloc() but kmem_cache_alloc() for the allocation
of the kmem_cache structures in slub.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Add additional debugging to check that the objects is actually from the cache
the caller claims. Doing so currently trips up some other debugging code. It
takes a lot to infer from that what was happening.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
[ penberg@kernel.org: Use pr_err() ]
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Fix build failure with CONFIG_DEBUG_SLAB=y && CONFIG_DEBUG_PAGEALLOC=y caused
by commit 8a13a4cc "mm/sl[aou]b: Shrink __kmem_cache_create() parameter lists".
mm/slab.c: In function '__kmem_cache_create':
mm/slab.c:2474: error: 'align' undeclared (first use in this function)
mm/slab.c:2474: error: (Each undeclared identifier is reported only once
mm/slab.c:2474: error: for each function it appears in.)
make[1]: *** [mm/slab.o] Error 1
make: *** [mm] Error 2
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Acked-by: Glauber Costa <glommer@parallels.com>
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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This patch does not fix anything, and its only goal is to enable us
to obtain some common code between SLAB and SLUB.
Neither behavior nor produced code is affected.
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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This patch does not fix anything and its only goal is to
produce common code between SLAB and SLUB.
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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This long (seemingly unnecessary) patch does not fix anything and
its only goal is to produce common code between SLAB and SLUB.
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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This allows to use _RET_IP_ instead of builtin_address(0), thus
achiveing implementation consistency in all three allocators.
Though maybe a nitpick, the real goal behind this patch is
to be able to obtain common code between SLAB and SLUB.
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Currently slob falls back to regular kmalloc for this case.
With this patch kmalloc_track_caller() is correctly implemented,
thus tracing the specified caller.
This is important to trace accurately allocations performed by
krealloc, kstrdup, kmemdup, etc.
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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