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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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de380b55f9
percpu.h has always been including slab.h to get k[mz]alloc/free() for UP inline implementation. percpu.h being used by very low level headers including module.h and sched.h, this meant that a lot files unintentionally got slab.h inclusion. Lee Schermerhorn was trying to make topology.h use percpu.h and got bitten by this implicit inclusion. The right thing to do is break this ultimately unnecessary dependency. The previous patch added explicit inclusion of either gfp.h or slab.h to the source files using them. This patch updates percpu.h such that slab.h is no longer included from percpu.h. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
31 lines
672 B
C
31 lines
672 B
C
/*
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* mm/percpu_up.c - dummy percpu memory allocator implementation for UP
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*/
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#include <linux/module.h>
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#include <linux/percpu.h>
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#include <linux/slab.h>
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void __percpu *__alloc_percpu(size_t size, size_t align)
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{
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/*
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* Can't easily make larger alignment work with kmalloc. WARN
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* on it. Larger alignment should only be used for module
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* percpu sections on SMP for which this path isn't used.
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*/
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WARN_ON_ONCE(align > SMP_CACHE_BYTES);
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return kzalloc(size, GFP_KERNEL);
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}
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EXPORT_SYMBOL_GPL(__alloc_percpu);
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void free_percpu(void __percpu *p)
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{
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kfree(p);
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}
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EXPORT_SYMBOL_GPL(free_percpu);
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phys_addr_t per_cpu_ptr_to_phys(void *addr)
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{
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return __pa(addr);
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}
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