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When freeing an object that was allocated from KFENCE, we do that in the
slowpath __slab_free(), relying on the fact that KFENCE "slab" cannot be
the cpu slab, so the fastpath has to fallback to the slowpath.
This optimization doesn't help much though, because is_kfence_address()
is checked earlier anyway during the free hook processing or detached
freelist building. Thus we can simplify the code by making the
slab_free_hook() free the KFENCE object immediately, similarly to KASAN
quarantine.
In slab_free_hook() we can place kfence_free() above init processing, as
callers have been making sure to set init to false for KFENCE objects.
This simplifies slab_free(). This places it also above kasan_slab_free()
which is ok as that skips KFENCE objects anyway.
While at it also determine the init value in slab_free_freelist_hook()
outside of the loop.
This change will also make introducing per cpu array caches easier.
Tested-by: Marco Elver <elver@google.com>
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Currently we have a single function slab_free() handling both single
object freeing and bulk freeing with necessary hooks, the latter case
requiring slab_free_freelist_hook(). It should be however better to
distinguish the two use cases for the following reasons:
- code simpler to follow for the single object case
- better code generation - although inlining should eliminate the
slab_free_freelist_hook() for single object freeing in case no
debugging options are enabled, it seems it's not perfect. When e.g.
KASAN is enabled, we're imposing additional unnecessary overhead for
single object freeing.
- preparation to add percpu array caches in near future
Therefore, simplify slab_free() for the single object case by dropping
unnecessary parameters and calling only slab_free_hook() instead of
slab_free_freelist_hook(). Rename the bulk variant to slab_free_bulk()
and adjust callers accordingly.
While at it, flip (and document) slab_free_hook() return value so that
it returns true when the freeing can proceed, which matches the logic of
slab_free_freelist_hook() and is not confusingly the opposite.
Additionally we can simplify a bit by changing the tail parameter of
do_slab_free() when freeing a single object - instead of NULL we can set
it equal to head.
bloat-o-meter shows small code reduction with a .config that has KASAN
etc disabled:
add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-118 (-118)
Function old new delta
kmem_cache_alloc_bulk 1203 1196 -7
kmem_cache_free 861 835 -26
__kmem_cache_free 741 704 -37
kmem_cache_free_bulk 911 863 -48
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Currently, when __kmem_cache_alloc_bulk() fails, it frees back the
objects that were allocated before the failure, using
kmem_cache_free_bulk(). Because kmem_cache_free_bulk() calls the free
hooks (KASAN etc.) and those expect objects that were processed by the
post alloc hooks, slab_post_alloc_hook() is called before
kmem_cache_free_bulk().
This is wasteful, although not a big concern in practice for the rare
error path. But in order to efficiently handle percpu array batch refill
and free in the near future, we will also need a variant of
kmem_cache_free_bulk() that avoids the free hooks. So introduce it now
and use it for the failure path.
In case of failure we however still need to perform memcg uncharge so
handle that in a new memcg_slab_alloc_error_hook(). Thanks to Chengming
Zhou for noticing the missing uncharge.
As a consequence, __kmem_cache_alloc_bulk() no longer needs the objcg
parameter, remove it.
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The SLUB sysfs stats enabled CONFIG_SLUB_STATS have two deficiencies
identified wrt bulk alloc/free operations:
- Bulk allocations from cpu freelist are not counted. Add the
ALLOC_FASTPATH counter there.
- Bulk fastpath freeing will count a list of multiple objects with a
single FREE_FASTPATH inc. Add a stat_add() variant to count them all.
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Inspection of kmem_cache_free() disassembly showed we could make the
fast path smaller by providing few more hints to the compiler, and
splitting the memcg_slab_free_hook() into an inline part that only
checks if there's work to do, and an out of line part doing the actual
uncharge.
bloat-o-meter results:
add/remove: 2/0 grow/shrink: 0/3 up/down: 286/-554 (-268)
Function old new delta
__memcg_slab_free_hook - 270 +270
__pfx___memcg_slab_free_hook - 16 +16
kfree 828 665 -163
kmem_cache_free 1116 948 -168
kmem_cache_free_bulk.part 1701 1478 -223
Checking kmem_cache_free() disassembly now shows the non-fastpath
cases are handled out of line, which should reduce instruction cache
usage.
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
With allocation fastpaths no longer divided between two .c files, we
have better inlining, however checking the disassembly of
kmem_cache_alloc() reveals we can do better to make the fastpaths
smaller and move the less common situations out of line or to separate
functions, to reduce instruction cache pressure.
- split memcg pre/post alloc hooks to inlined checks that use likely()
to assume there will be no objcg handling necessary, and non-inline
functions doing the actual handling
- add some more likely/unlikely() to pre/post alloc hooks to indicate
which scenarios should be out of line
- change gfp_allowed_mask handling in slab_post_alloc_hook() so the
code can be optimized away when kasan/kmsan/kmemleak is configured out
bloat-o-meter shows:
add/remove: 4/2 grow/shrink: 1/8 up/down: 521/-2924 (-2403)
Function old new delta
__memcg_slab_post_alloc_hook - 461 +461
kmem_cache_alloc_bulk 775 791 +16
__pfx_should_failslab.constprop - 16 +16
__pfx___memcg_slab_post_alloc_hook - 16 +16
should_failslab.constprop - 12 +12
__pfx_memcg_slab_post_alloc_hook 16 - -16
kmem_cache_alloc_lru 1295 1023 -272
kmem_cache_alloc_node 1118 817 -301
kmem_cache_alloc 1076 772 -304
kmalloc_node_trace 1149 838 -311
kmalloc_trace 1102 789 -313
__kmalloc_node_track_caller 1393 1080 -313
__kmalloc_node 1397 1082 -315
__kmalloc 1374 1059 -315
memcg_slab_post_alloc_hook 464 - -464
Note that gcc still decided to inline __memcg_pre_alloc_hook(), but the
code is out of line. Forcing noinline did not improve the results. As a
result the fastpaths are shorter and overal code size is reduced.
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
slab_alloc() is a thin wrapper around slab_alloc_node() with only one
caller. Replace with direct call of slab_alloc_node().
__kmem_cache_alloc_lru() itself is a thin wrapper with two callers,
so replace it with direct calls of slab_alloc_node() and
trace_kmem_cache_alloc().
This also makes sure _RET_IP_ has always the expected value and not
depending on inlining decisions.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This will eliminate a call between compilation units through
__kmem_cache_alloc_node() and allow better inlining of the allocation
fast path.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
In preparation for the next patch, move the kmalloc_slab() function to
the header, as it will have callers from two files, and make it inline.
To avoid unnecessary bloat, remove all size checks/warnings from
kmalloc_slab() as they just duplicate those in callers, especially after
recent changes to kmalloc_size_roundup(). We just need to adjust handling
of zero size in __do_kmalloc_node(). Also we can stop handling NULL
result from kmalloc_slab() there as that now cannot happen (unless
called too early during boot).
The size_index array becomes visible so rename it to a more specific
kmalloc_size_index.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This should result in better code. Currently kfree() makes a function
call between compilation units to __kmem_cache_free() which does its own
virt_to_slab(), throwing away the struct slab pointer we already had in
kfree(). Now it can be reused. Additionally kfree() can now inline the
whole SLUB freeing fastpath.
Also move over free_large_kmalloc() as the only callsites are now in
slub.c, and make it static.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The declaration and associated helpers are not used anywhere else
anymore.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
We don't share those between SLAB and SLUB anymore, so most memcg
related functions can be moved to slub.c proper.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
We don't share the hooks between two slab implementations anymore so
they can be moved away from the header. As part of the move, also move
should_failslab() from slab_common.c as the pre_alloc hook uses it.
This means slab.h can stop including fault-inject.h and kmemleak.h.
Fix up some files that were depending on the includes transitively.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The #include's are scattered at several places of the file, but it does
not seem this is needed to prevent any include loops (anymore?) so
consolidate them at the top. Also move the misplaced kmem_cache_init()
declaration away from the top.
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
mm/slab.h is the only place to include include/linux/slub_def.h which
has allowed switching between SLAB and SLUB. Now we can simply move the
contents over and remove slub_def.h.
Use this opportunity to fix up some whitespace (alignment) issues.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Nothing outside SLUB itself accesses the struct kmem_cache_cpu fields so
it does not need to be declared in slub_def.h. This allows also to move
enum stat_item.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
CONFIG_DEBUG_SLAB is going away with CONFIG_SLAB, so remove dead ifdefs
in mempool and dmapool code.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
In slab_common.c and slab.h headers, we can now remove all code behind
CONFIG_SLAB and CONFIG_DEBUG_SLAB ifdefs, and remove all CONFIG_SLUB
ifdefs.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The CPUHP_SLAB_PREPARE hooks are only used by SLAB which is removed.
SLUB defines them as NULL, so we can remove those altogether.
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
With SLAB removed, these are never true anymore so we can clean up.
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Some struct slab fields are initialized differently for SLAB and SLUB so
we can simplify with SLUB being the only remaining allocator.
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Marco Elver <elver@google.com>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
With SLAB removed and SLUB the only remaining allocator, we can clean up
some code that was depending on the choice.
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Remove CONFIG_SLAB, CONFIG_DEBUG_SLAB, CONFIG_SLAB_DEPRECATED and
everything in Kconfig files and mm/Makefile that depends on those. Since
SLUB is the only remaining allocator, remove the allocator choice, make
CONFIG_SLUB a "def_bool y" for now and remove all explicit dependencies
on SLUB or SLAB as it's now always enabled. Make every option's verbose
name and description refer to "the slab allocator" without refering to
the specific implementation. Do not rename the CONFIG_ option names yet.
Everything under #ifdef CONFIG_SLAB, and mm/slab.c is now dead code, all
code under #ifdef CONFIG_SLUB is now always compiled.
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The SLAB implementation is going to be removed, and mm-api.rst currently
uses mm/slab.c to obtain kerneldocs for some API functions. Switch it to
mm/slub.c and move the relevant kerneldocs of exported functions from
one to the other. The rest of kerneldocs in slab.c is for static SLAB
implementation-specific functions that don't have counterparts in slub.c
and thus can be simply removed with the implementation.
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The current updated scheme (which this series implemented) is:
- node partial slabs: PG_Workingset && !frozen
- cpu partial slabs: !PG_Workingset && !frozen
- cpu slabs: !PG_Workingset && frozen
- full slabs: !PG_Workingset && !frozen
The most important change is that "frozen" bit is not set for the
cpu partial slabs anymore, __slab_free() will grab node list_lock
then check by !PG_Workingset that it's not on a node partial list.
And the "frozen" bit is still kept for the cpu slabs for performance,
since we don't need to grab node list_lock to check whether the
PG_Workingset is set or not if the "frozen" bit is set in __slab_free().
Update related documentations and comments in the source.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Acked-by: Christoph Lameter (Ampere) <cl@linux.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Since all partial slabs on the CPU partial list are not frozen anymore,
we don't unfreeze when moving cpu partial slabs to node partial list,
it's better to rename these functions.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Since the introduce of unfrozen slabs on cpu partial list, we don't
need to synchronize the slab frozen state under the node list_lock.
The caller of deactivate_slab() and the caller of __slab_free() won't
manipulate the slab list concurrently.
So we can get node list_lock in the last stage if we really need to
manipulate the slab list in this path.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Now we will freeze slabs when moving them out of node partial list to
cpu partial list, this method needs two cmpxchg_double operations:
1. freeze slab (acquire_slab()) under the node list_lock
2. get_freelist() when pick used in ___slab_alloc()
Actually we don't need to freeze when moving slabs out of node partial
list, we can delay freezing to when use slab freelist in ___slab_alloc(),
so we can save one cmpxchg_double().
And there are other good points:
- The moving of slabs between node partial list and cpu partial list
becomes simpler, since we don't need to freeze or unfreeze at all.
- The node list_lock contention would be less, since we don't need to
freeze any slab under the node list_lock.
We can achieve this because there is no concurrent path would manipulate
the partial slab list except the __slab_free() path, which is now
serialized by slab_test_node_partial() under the list_lock.
Since the slab returned by get_partial() interfaces is not frozen anymore
and no freelist is returned in the partial_context, so we need to use the
introduced freeze_slab() to freeze it and get its freelist.
Similarly, the slabs on the CPU partial list are not frozen anymore,
we need to freeze_slab() on it before use.
We can now delete acquire_slab() as it became unused.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
We will have unfrozen slabs out of the node partial list later, so we
need a freeze_slab() function to freeze the partial slab and get its
freelist.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Now the partially empty slub will be frozen when taken out of node partial
list, so the __slab_free() will know from "was_frozen" that the partially
empty slab is not on node partial list and is a cpu or cpu partial slab
of some cpu.
But we will change this, make partial slabs leave the node partial list
with unfrozen state, so we need to change __slab_free() to use the new
slab_test_node_partial() we just introduced.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Now we rely on the "frozen" bit to see if we should manipulate the
slab->slab_list, which will be changed in the following patch.
Instead we introduce another way to keep track of whether slub is on
the per-node partial list, here we reuse the PG_workingset bit.
We have to use the atomic set_bit() and clear_bit() variants and change
slab_unlock() to bit_spin_unlock() because when cmpxchg is not available
and PG_lock is used, there may be concurrent operations on the two bits.
Thanks to Mark Brown for reporting a hang and testing of a previous
version where the non-atomic operations were used.
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
We need all get_partial() related interfaces to return a slab, instead
of returning the freelist (or object).
Use the partial_context.object to return back freelist or object for
now. This patch shouldn't have any functional changes.
Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The get_partial() interface used in ___slab_alloc() may return a single
object in the "kmem_cache_debug(s)" case, in which we will just return
the "freelist" object.
Move this handling up to prepare for later changes.
And the "pfmemalloc_match()" part is not needed for node partial slab,
since we already check this in the get_partial_node().
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The commands should be sorted inside the group definition.
Fix the ordering so we won't get following warning:
WARN_ON(iwl_cmd_groups_verify_sorted(trans_cfg))
Link: https://lore.kernel.org/regressions/2fa930bb-54dd-4942-a88d-05a47c8e9731@gmail.com/
Link: https://lore.kernel.org/linux-wireless/CAHk-=wix6kqQ5vHZXjOPpZBfM7mMm9bBZxi2Jh7XnaKCqVf94w@mail.gmail.com/
Fixes: b6e3d1ba4fcf ("wifi: iwlwifi: mvm: implement new firmware API for statistics")
Tested-by: Niklāvs Koļesņikovs <pinkflames.linux@gmail.com>
Tested-by: Damian Tometzki <damian@riscv-rocks.de>
Acked-by: Kalle Valo <kvalo@kernel.org>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Include upper 5 address bits of physical address in iitlbp
- Prevent booting 64-bit kernels on PA1.x machines
- parport-gsc: mark init function static
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Merge tag 'parisc-for-6.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture fixes from Helge Deller:
- Include the upper 5 address bits when inserting TLB entries on a
64-bit kernel.
On physical machines those are ignored, but in qemu it's nice to have
them included and to be correct.
- Stop the 64-bit kernel and show a warning if someone tries to boot on
a machine with a 32-bit CPU
- Fix a "no previous prototype" warning in parport-gsc
* tag 'parisc-for-6.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Prevent booting 64-bit kernels on PA1.x machines
parport: gsc: mark init function static
parisc/pgtable: Do not drop upper 5 address bits of physical address
1, Support PREEMPT_DYNAMIC with static keys;
2, Relax memory ordering for atomic operations;
3, Support BPF CPU v4 instructions for LoongArch;
4, Some build and runtime warning fixes.
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Merge tag 'loongarch-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- support PREEMPT_DYNAMIC with static keys
- relax memory ordering for atomic operations
- support BPF CPU v4 instructions for LoongArch
- some build and runtime warning fixes
* tag 'loongarch-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
selftests/bpf: Enable cpu v4 tests for LoongArch
LoongArch: BPF: Support signed mod instructions
LoongArch: BPF: Support signed div instructions
LoongArch: BPF: Support 32-bit offset jmp instructions
LoongArch: BPF: Support unconditional bswap instructions
LoongArch: BPF: Support sign-extension mov instructions
LoongArch: BPF: Support sign-extension load instructions
LoongArch: Add more instruction opcodes and emit_* helpers
LoongArch/smp: Call rcutree_report_cpu_starting() earlier
LoongArch: Relax memory ordering for atomic operations
LoongArch: Mark __percpu functions as always inline
LoongArch: Disable module from accessing external data directly
LoongArch: Support PREEMPT_DYNAMIC with static keys
- Finish a refactor of pgprot_framebuffer() which dependend on some changes
that were merged via the drm tree.
- Fix some kernel-doc warnings to quieten the bots.
Thanks to: Nathan Lynch, Thomas Zimmermann.
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Merge tag 'powerpc-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Finish a refactor of pgprot_framebuffer() which dependend
on some changes that were merged via the drm tree
- Fix some kernel-doc warnings to quieten the bots
Thanks to Nathan Lynch and Thomas Zimmermann.
* tag 'powerpc-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/rtas: Fix ppc_rtas_rmo_buf_show() kernel-doc
powerpc/pseries/rtas-work-area: Fix rtas_work_area_reserve_arena() kernel-doc
powerpc/fb: Call internal __phys_mem_access_prot() in fbdev code
powerpc: Remove file parameter from phys_mem_access_prot()
powerpc/machdep: Remove trailing whitespaces
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Merge tag '6.7-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- ctime caching fix (for setxattr)
- encryption fix
- DNS resolver mount fix
- debugging improvements
- multichannel fixes including cases where server stops or starts
supporting multichannel after mount
- reconnect fix
- minor cleanups
* tag '6.7-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module version number for cifs.ko
cifs: handle when server stops supporting multichannel
cifs: handle when server starts supporting multichannel
Missing field not being returned in ioctl CIFS_IOC_GET_MNT_INFO
smb3: allow dumping session and tcon id to improve stats analysis and debugging
smb: client: fix mount when dns_resolver key is not available
smb3: fix caching of ctime on setxattr
smb3: minor cleanup of session handling code
cifs: reconnect work should have reference on server struct
cifs: do not pass cifs_sb when trying to add channels
cifs: account for primary channel in the interface list
cifs: distribute channels across interfaces based on speed
cifs: handle cases where a channel is closed
smb3: more minor cleanups for session handling routines
smb3: minor RDMA cleanup
cifs: Fix encryption of cleared, but unset rq_iter data buffers
- Documentation update: Add a note about argument and return value
fetching is the best effort because it depends on the type.
- objpool: Fix to make internal global variables static in
test_objpool.c.
- kprobes: Unify kprobes_exceptions_nofify() prototypes. There are
the same prototypes in asm/kprobes.h for some architectures, but
some of them are missing the prototype and it causes a warning.
So move the prototype into linux/kprobes.h.
- tracing: Fix to check the tracepoint event and return event at
parsing stage. The tracepoint event doesn't support %return
but if $retval exists, it will be converted to %return silently.
This finds that case and rejects it.
- tracing: Fix the order of the descriptions about the parameters
of __kprobe_event_gen_cmd_start() to be consistent with the
argument list of the function.
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Merge tag 'probes-fixes-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
- Documentation update: Add a note about argument and return value
fetching is the best effort because it depends on the type.
- objpool: Fix to make internal global variables static in
test_objpool.c.
- kprobes: Unify kprobes_exceptions_nofify() prototypes. There are the
same prototypes in asm/kprobes.h for some architectures, but some of
them are missing the prototype and it causes a warning. So move the
prototype into linux/kprobes.h.
- tracing: Fix to check the tracepoint event and return event at
parsing stage. The tracepoint event doesn't support %return but if
$retval exists, it will be converted to %return silently. This finds
that case and rejects it.
- tracing: Fix the order of the descriptions about the parameters of
__kprobe_event_gen_cmd_start() to be consistent with the argument
list of the function.
* tag 'probes-fixes-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/kprobes: Fix the order of argument descriptions
tracing: fprobe-event: Fix to check tracepoint event and return
kprobes: unify kprobes_exceptions_nofify() prototypes
lib: test_objpool: make global variables static
Documentation: tracing: Add a note about argument and retval access
- fix double free and resource leaks in imsttfb
- lots of remove callback cleanups and section mismatch fixes in omapfb,
amifb and atmel_lcdfb
- error code fix and memparse simplification in omapfb
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Merge tag 'fbdev-for-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes and cleanups from Helge Deller:
- fix double free and resource leaks in imsttfb
- lots of remove callback cleanups and section mismatch fixes in
omapfb, amifb and atmel_lcdfb
- error code fix and memparse simplification in omapfb
* tag 'fbdev-for-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (31 commits)
fbdev: fsl-diu-fb: mark wr_reg_wa() static
fbdev: amifb: Convert to platform remove callback returning void
fbdev: amifb: Mark driver struct with __refdata to prevent section mismatch warning
fbdev: hyperv_fb: fix uninitialized local variable use
fbdev: omapfb/tpd12s015: Convert to platform remove callback returning void
fbdev: omapfb/tfp410: Convert to platform remove callback returning void
fbdev: omapfb/sharp-ls037v7dw01: Convert to platform remove callback returning void
fbdev: omapfb/opa362: Convert to platform remove callback returning void
fbdev: omapfb/hdmi: Convert to platform remove callback returning void
fbdev: omapfb/dvi: Convert to platform remove callback returning void
fbdev: omapfb/dsi-cm: Convert to platform remove callback returning void
fbdev: omapfb/dpi: Convert to platform remove callback returning void
fbdev: omapfb/analog-tv: Convert to platform remove callback returning void
fbdev: atmel_lcdfb: Convert to platform remove callback returning void
fbdev: omapfb/tpd12s015: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/tfp410: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/sharp-ls037v7dw01: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/opa362: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/hdmi: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/dvi: Don't put .remove() in .exit.text and drop suppress_bind_attrs
...
The order of descriptions should be consistent with the argument list of
the function, so "kretprobe" should be the second one.
int __kprobe_event_gen_cmd_start(struct dynevent_cmd *cmd, bool kretprobe,
const char *name, const char *loc, ...)
Link: https://lore.kernel.org/all/20231031041305.3363712-1-yujie.liu@intel.com/
Fixes: 2a588dd1d5d6 ("tracing: Add kprobe event command generation functions")
Suggested-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Yujie Liu <yujie.liu@intel.com>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
- big pile of amd fixes, but mostly hw support newly added in 6.7
- i915 fixes, mostly minor things
- qxl memory leak fix
- vc4 uaf fix in mock helpers
- syncobj fix for DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE
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Merge tag 'drm-next-2023-11-10' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Daniel Vetter:
"Dave's VPN to the big machine died, so it's on me to do fixes pr this
and next week while everyone else is at plumbers.
- big pile of amd fixes, but mostly for hw support newly added in 6.7
- i915 fixes, mostly minor things
- qxl memory leak fix
- vc4 uaf fix in mock helpers
- syncobj fix for DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE"
* tag 'drm-next-2023-11-10' of git://anongit.freedesktop.org/drm/drm: (78 commits)
drm/amdgpu: fix error handling in amdgpu_vm_init
drm/amdgpu: Fix possible null pointer dereference
drm/amdgpu: move UVD and VCE sched entity init after sched init
drm/amdgpu: move kfd_resume before the ip late init
drm/amd: Explicitly check for GFXOFF to be enabled for s0ix
drm/amdgpu: Change WREG32_RLC to WREG32_SOC15_RLC where inst != 0 (v2)
drm/amdgpu: Use correct KIQ MEC engine for gfx9.4.3 (v5)
drm/amdgpu: add smu v13.0.6 pcs xgmi ras error query support
drm/amdgpu: fix software pci_unplug on some chips
drm/amd/display: remove duplicated argument
drm/amdgpu: correct mca debugfs dump reg list
drm/amdgpu: correct acclerator check architecutre dump
drm/amdgpu: add pcs xgmi v6.4.0 ras support
drm/amdgpu: Change extended-scope MTYPE on GC 9.4.3
drm/amdgpu: disable smu v13.0.6 mca debug mode by default
drm/amdgpu: Support multiple error query modes
drm/amdgpu: refine smu v13.0.6 mca dump driver
drm/amdgpu: Do not program PF-only regs in hdp_v4_0.c under SRIOV (v2)
drm/amdgpu: Skip PCTL0_MMHUB_DEEPSLEEP_IB write in jpegv4.0.3 under SRIOV
drm: amd: Resolve Sphinx unexpected indentation warning
...
- Move the MediaTek GIC quirk handling from irqchip to core. Before the
merging window commit 44bd78dd2b88 ("irqchip/gic-v3: Disable pseudo
NMIs on MediaTek devices w/ firmware issues") temporarily addressed
this issue. Fixed now at a deeper level in the arch code.
- Reject events meant for other PMUs in the CoreSight PMU driver,
otherwise some of the core PMU events would disappear.
- Fix the Armv8 PMUv3 driver driver to not truncate 64-bit registers,
causing some events to be invisible.
- Remove duplicate declaration of __arm64_sys##name following the patch
to avoid prototype warning for syscalls.
- Typos in the elf_hwcap documentation.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"Mostly PMU fixes and a reworking of the pseudo-NMI disabling on broken
MediaTek firmware:
- Move the MediaTek GIC quirk handling from irqchip to core. Before
the merging window commit 44bd78dd2b88 ("irqchip/gic-v3: Disable
pseudo NMIs on MediaTek devices w/ firmware issues") temporarily
addressed this issue. Fixed now at a deeper level in the arch code
- Reject events meant for other PMUs in the CoreSight PMU driver,
otherwise some of the core PMU events would disappear
- Fix the Armv8 PMUv3 driver driver to not truncate 64-bit registers,
causing some events to be invisible
- Remove duplicate declaration of __arm64_sys##name following the
patch to avoid prototype warning for syscalls
- Typos in the elf_hwcap documentation"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/syscall: Remove duplicate declaration
Revert "arm64: smp: avoid NMI IPIs with broken MediaTek FW"
arm64: Move MediaTek GIC quirk handling from irqchip to core
arm64/arm: arm_pmuv3: perf: Don't truncate 64-bit registers
perf: arm_cspmu: Reject events meant for other PMUs
Documentation/arm64: Fix typos in elf_hwcaps
A collection of fixes for RC1. Majority of changes are various
ASoC driver-specific small fixes and usual HD-audio quirks, while
there are a couple of core changes: a fix in ALSA core procfs code
to avoid deadlocks at disconnection and an ASoC core fix for DAPM
clock widgets.
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Merge tag 'sound-fix-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of fixes for rc1.
The majority of changes are various ASoC driver-specific small fixes
and usual HD-audio quirks, while there are a couple of core changes: a
fix in ALSA core procfs code to avoid deadlocks at disconnection and
an ASoC core fix for DAPM clock widgets"
* tag 'sound-fix-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
OSS: dmasound/paula: Convert to platform remove callback returning void
ALSA: hda: ASUS UM5302LA: Added quirks for cs35L41/10431A83 on i2c bus
ALSA: info: Fix potential deadlock at disconnection
ASoC: nau8540: Add self recovery to improve capture quility
ALSA: hda/realtek: Add support dual speaker for Dell
ALSA: hda: Add ASRock X670E Taichi to denylist
ALSA: hda/realtek: Add quirk for ASUS UX7602ZM
ASoC: SOF: sof-client: trivial: fix comment typo
ASoC: dapm: fix clock get name
ASoC: hdmi-codec: register hpd callback on component probe
ASoC: mediatek: mt8186_mt6366_rt1019_rt5682s: trivial: fix error messages
ASoC: da7219: Improve system suspend and resume handling
ASoC: codecs: Modify macro value error
ASoC: codecs: Modify the wrong judgment of re value
ASoC: codecs: Modify the maximum value of calib
ASoC: amd: acp: fix for i2s mode register field update
ASoC: codecs: aw88399: Fix -Wuninitialized in aw_dev_set_vcalb()
ASoC: rt712-sdca: fix speaker route missing issue
ASoC: rockchip: Fix unused rockchip_i2s_tdm_match warning for !CONFIG_OF
ASoC: ti: omap-mcbsp: Fix runtime PM underflow warnings
A couple of fixes that came in during the merge window, one Kconfig
dependency fix and another fix for a long standing issue where in the
case where a sync transfer races with system suspend.
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Merge tag 'spi-fix-v6.7-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of fixes that came in during the merge window: one Kconfig
dependency fix and another fix for a long standing issue where a sync
transfer races with system suspend"
* tag 'spi-fix-v6.7-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: Fix null dereference on suspend
spi: spi-zynq-qspi: add spi-mem to driver kconfig dependencies
- Fix broken cache-flush support for Micron eMMCs
- Revert "mmc: core: Capture correct oemid-bits for eMMC cards"
MMC host:
- sdhci_am654: Fix TAP value parsing for legacy speed mode
- sdhci-pci-gli: Fix support for ASPM mode for GL9755/GL9750
- vub300: Fix an error path in probe
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Merge tag 'mmc-v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Fix broken cache-flush support for Micron eMMCs
- Revert 'mmc: core: Capture correct oemid-bits for eMMC cards'
MMC host:
- sdhci_am654: Fix TAP value parsing for legacy speed mode
- sdhci-pci-gli: Fix support for ASPM mode for GL9755/GL9750
- vub300: Fix an error path in probe"
* tag 'mmc-v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-pci-gli: GL9750: Mask the replay timer timeout of AER
mmc: sdhci-pci-gli: GL9755: Mask the replay timer timeout of AER
Revert "mmc: core: Capture correct oemid-bits for eMMC cards"
mmc: vub300: fix an error code
mmc: Add quirk MMC_QUIRK_BROKEN_CACHE_FLUSH for Micron eMMC Q2J54A
mmc: sdhci_am654: fix start loop index for TAP value parsing
