Revision 8c89ecf5c13b0504018c5045896a0b78d5d811e6 authored by Alexander Potapenko on 11 January 2023, 10:50:12 UTC, committed by Alexander Potapenko on 07 February 2023, 09:50:25 UTC
When building the kernel with W=1, the compiler reports numerous warnings about the missing prototypes for KMSAN instrumentation hooks. Because these functions are not supposed to be called explicitly by the kernel code (calls to them are emitted by the compiler), they do not have to be declared in the headers. Instead, we add forward declarations right before the definitions to silence the warnings produced by -Wmissing-prototypes. Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/lkml/202301020356.dFruA4I5-lkp@intel.com/T/ Reported-by: Vlastimil Babka <vbabka@suse.cz> Suggested-by: Marco Elver <elver@google.com> Signed-off-by: Alexander Potapenko <glider@google.com>
1 parent 8b0ffea
pcc.h
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* PCC (Platform Communications Channel) methods
*/
#ifndef _PCC_H
#define _PCC_H
#include <linux/mailbox_controller.h>
#include <linux/mailbox_client.h>
struct pcc_mbox_chan {
struct mbox_chan *mchan;
u64 shmem_base_addr;
u64 shmem_size;
u32 latency;
u32 max_access_rate;
u16 min_turnaround_time;
};
#define MAX_PCC_SUBSPACES 256
#ifdef CONFIG_PCC
extern struct pcc_mbox_chan *
pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id);
extern void pcc_mbox_free_channel(struct pcc_mbox_chan *chan);
#else
static inline struct pcc_mbox_chan *
pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id)
{
return ERR_PTR(-ENODEV);
}
static inline void pcc_mbox_free_channel(struct pcc_mbox_chan *chan) { }
#endif
#endif /* _PCC_H */
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