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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-22 22:34:08 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-22 22:34:08 +0300 |
| commit | cd9b44f90763c3367e8dd0601849ffb028e8ba52 (patch) | |
| tree | d1da0c2d49e3622fe51584a154ab383b3e783c1b /include/linux/compiler.h | |
| parent | df2def49c57b4146520a1f4ca37bc3f494e2cd67 (diff) | |
| parent | 2a9d6481004215da8e93edb588cf448f2af80303 (diff) | |
| download | linux-cd9b44f90763c3367e8dd0601849ffb028e8ba52.tar.xz | |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
- the rest of MM
- procfs updates
- various misc things
- more y2038 fixes
- get_maintainer updates
- lib/ updates
- checkpatch updates
- various epoll updates
- autofs updates
- hfsplus
- some reiserfs work
- fatfs updates
- signal.c cleanups
- ipc/ updates
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (166 commits)
ipc/util.c: update return value of ipc_getref from int to bool
ipc/util.c: further variable name cleanups
ipc: simplify ipc initialization
ipc: get rid of ids->tables_initialized hack
lib/rhashtable: guarantee initial hashtable allocation
lib/rhashtable: simplify bucket_table_alloc()
ipc: drop ipc_lock()
ipc/util.c: correct comment in ipc_obtain_object_check
ipc: rename ipcctl_pre_down_nolock()
ipc/util.c: use ipc_rcu_putref() for failues in ipc_addid()
ipc: reorganize initialization of kern_ipc_perm.seq
ipc: compute kern_ipc_perm.id under the ipc lock
init/Kconfig: remove EXPERT from CHECKPOINT_RESTORE
fs/sysv/inode.c: use ktime_get_real_seconds() for superblock stamp
adfs: use timespec64 for time conversion
kernel/sysctl.c: fix typos in comments
drivers/rapidio/devices/rio_mport_cdev.c: remove redundant pointer md
fork: don't copy inconsistent signal handler state to child
signal: make get_signal() return bool
signal: make sigkill_pending() return bool
...
Diffstat (limited to 'include/linux/compiler.h')
| -rw-r--r-- | include/linux/compiler.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 42506e4d1f53..681d866efb1e 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -280,6 +280,25 @@ unsigned long read_word_at_a_time(const void *addr) #endif /* __KERNEL__ */ +/* + * Force the compiler to emit 'sym' as a symbol, so that we can reference + * it from inline assembler. Necessary in case 'sym' could be inlined + * otherwise, or eliminated entirely due to lack of references that are + * visible to the compiler. + */ +#define __ADDRESSABLE(sym) \ + static void * __attribute__((section(".discard.addressable"), used)) \ + __PASTE(__addressable_##sym, __LINE__) = (void *)&sym; + +/** + * offset_to_ptr - convert a relative memory offset to an absolute pointer + * @off: the address of the 32-bit offset value + */ +static inline void *offset_to_ptr(const int *off) +{ + return (void *)((unsigned long)off + *off); +} + #endif /* __ASSEMBLY__ */ #ifndef __optimize @@ -313,7 +332,7 @@ unsigned long read_word_at_a_time(const void *addr) #ifdef __OPTIMIZE__ # define __compiletime_assert(condition, msg, prefix, suffix) \ do { \ - bool __cond = !(condition); \ + int __cond = !(condition); \ extern void prefix ## suffix(void) __compiletime_error(msg); \ if (__cond) \ prefix ## suffix(); \ |