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e87fc0ec07
Implement FETCH-OP atomic primitives, these are very similar to the existing OP-RETURN primitives we already have, except they return the value of the atomic variable _before_ modification. This is especially useful for irreversible operations -- such as bitops (because it becomes impossible to reconstruct the state prior to modification). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Miao <realmz6@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: adi-buildroot-devel@lists.sourceforge.net Cc: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
/*
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* arch/blackfin/kernel/bfin_ksyms.c - exports for random symbols
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*
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* Copyright 2004-2008 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <linux/module.h>
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#include <linux/uaccess.h>
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#include <asm/cacheflush.h>
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#include <asm/io.h>
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#include <asm/irq_handler.h>
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/* Allow people to have their own Blackfin exception handler in a module */
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EXPORT_SYMBOL(bfin_return_from_exception);
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/* All the Blackfin cache functions: mach-common/cache.S */
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EXPORT_SYMBOL(blackfin_dcache_invalidate_range);
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EXPORT_SYMBOL(blackfin_icache_flush_range);
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EXPORT_SYMBOL(blackfin_dcache_flush_range);
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EXPORT_SYMBOL(blackfin_dflush_page);
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/* The following are special because they're not called
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* explicitly (the C compiler generates them). Fortunately,
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* their interface isn't gonna change any time soon now, so
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* it's OK to leave it out of version control.
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*/
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EXPORT_SYMBOL(memcpy);
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EXPORT_SYMBOL(memset);
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EXPORT_SYMBOL(memcmp);
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EXPORT_SYMBOL(memmove);
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EXPORT_SYMBOL(memchr);
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/*
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* Because string functions are both inline and exported functions and
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* folder arch/blackfin/lib is configured as a library path in Makefile,
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* symbols exported in folder lib is not linked into built-in.o but
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* inlined only. In order to export string symbols to kernel module
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* properly, they should be exported here.
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*/
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EXPORT_SYMBOL(strcpy);
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EXPORT_SYMBOL(strncpy);
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EXPORT_SYMBOL(strcmp);
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EXPORT_SYMBOL(strncmp);
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/*
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* libgcc functions - functions that are used internally by the
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* compiler... (prototypes are not correct though, but that
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* doesn't really matter since they're not versioned).
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*/
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extern void __ashldi3(void);
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extern void __ashrdi3(void);
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extern void __smulsi3_highpart(void);
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extern void __umulsi3_highpart(void);
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extern void __divsi3(void);
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extern void __lshrdi3(void);
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extern void __modsi3(void);
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extern void __muldi3(void);
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extern void __udivsi3(void);
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extern void __umodsi3(void);
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EXPORT_SYMBOL(__ashldi3);
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EXPORT_SYMBOL(__ashrdi3);
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EXPORT_SYMBOL(__umulsi3_highpart);
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EXPORT_SYMBOL(__smulsi3_highpart);
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EXPORT_SYMBOL(__divsi3);
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EXPORT_SYMBOL(__lshrdi3);
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EXPORT_SYMBOL(__modsi3);
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EXPORT_SYMBOL(__muldi3);
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EXPORT_SYMBOL(__udivsi3);
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EXPORT_SYMBOL(__umodsi3);
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/* Input/output symbols: lib/{in,out}s.S */
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EXPORT_SYMBOL(outsb);
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EXPORT_SYMBOL(insb);
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EXPORT_SYMBOL(outsw);
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EXPORT_SYMBOL(outsw_8);
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EXPORT_SYMBOL(insw);
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EXPORT_SYMBOL(insw_8);
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EXPORT_SYMBOL(outsl);
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EXPORT_SYMBOL(insl);
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EXPORT_SYMBOL(insl_16);
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#ifdef CONFIG_SMP
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EXPORT_SYMBOL(__raw_atomic_add_asm);
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EXPORT_SYMBOL(__raw_atomic_xadd_asm);
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EXPORT_SYMBOL(__raw_atomic_and_asm);
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EXPORT_SYMBOL(__raw_atomic_or_asm);
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EXPORT_SYMBOL(__raw_atomic_xor_asm);
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EXPORT_SYMBOL(__raw_atomic_test_asm);
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EXPORT_SYMBOL(__raw_xchg_1_asm);
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EXPORT_SYMBOL(__raw_xchg_2_asm);
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EXPORT_SYMBOL(__raw_xchg_4_asm);
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EXPORT_SYMBOL(__raw_cmpxchg_1_asm);
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EXPORT_SYMBOL(__raw_cmpxchg_2_asm);
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EXPORT_SYMBOL(__raw_cmpxchg_4_asm);
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EXPORT_SYMBOL(__raw_spin_is_locked_asm);
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EXPORT_SYMBOL(__raw_spin_lock_asm);
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EXPORT_SYMBOL(__raw_spin_trylock_asm);
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EXPORT_SYMBOL(__raw_spin_unlock_asm);
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EXPORT_SYMBOL(__raw_read_lock_asm);
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EXPORT_SYMBOL(__raw_read_trylock_asm);
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EXPORT_SYMBOL(__raw_read_unlock_asm);
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EXPORT_SYMBOL(__raw_write_lock_asm);
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EXPORT_SYMBOL(__raw_write_trylock_asm);
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EXPORT_SYMBOL(__raw_write_unlock_asm);
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EXPORT_SYMBOL(__raw_bit_set_asm);
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EXPORT_SYMBOL(__raw_bit_clear_asm);
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EXPORT_SYMBOL(__raw_bit_toggle_asm);
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EXPORT_SYMBOL(__raw_bit_test_asm);
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EXPORT_SYMBOL(__raw_bit_test_set_asm);
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EXPORT_SYMBOL(__raw_bit_test_clear_asm);
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EXPORT_SYMBOL(__raw_bit_test_toggle_asm);
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EXPORT_SYMBOL(__raw_uncached_fetch_asm);
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#ifdef __ARCH_SYNC_CORE_DCACHE
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EXPORT_SYMBOL(__raw_smp_mark_barrier_asm);
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EXPORT_SYMBOL(__raw_smp_check_barrier_asm);
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#endif
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#endif
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#ifdef CONFIG_FUNCTION_TRACER
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extern void _mcount(void);
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EXPORT_SYMBOL(_mcount);
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#endif
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