mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 03:47:43 +00:00
2c86963b09
Back in January 2008 Nick Piggin implemented "ticket" spinlocks
for X86 (See commit 314cdbefd1).
IA64 implementation has a couple of differences because of the
available atomic operations ... e.g. we have no fetchadd2 instruction
that operates on a 16-bit quantity so we make ticket locks use
a 32-bit word for each of the current ticket and now-serving values.
Performance on uncontended locks is about 8% worse than the previous
implementation, but this seems a good trade for determinism in the
contended case. Performance impact on macro-level benchmarks is in
the noise.
Signed-off-by: Tony Luck <tony.luck@intel.com>
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*
|
|
* Architecture-specific kernel symbols
|
|
*
|
|
* Don't put any exports here unless it's defined in an assembler file.
|
|
* All other exports should be put directly after the definition.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/string.h>
|
|
EXPORT_SYMBOL(memset);
|
|
EXPORT_SYMBOL(memcpy);
|
|
EXPORT_SYMBOL(strlen);
|
|
|
|
#include<asm/pgtable.h>
|
|
EXPORT_SYMBOL_GPL(empty_zero_page);
|
|
|
|
#include <asm/checksum.h>
|
|
EXPORT_SYMBOL(ip_fast_csum); /* hand-coded assembly */
|
|
EXPORT_SYMBOL(csum_ipv6_magic);
|
|
|
|
#include <asm/page.h>
|
|
EXPORT_SYMBOL(clear_page);
|
|
EXPORT_SYMBOL(copy_page);
|
|
|
|
#ifdef CONFIG_VIRTUAL_MEM_MAP
|
|
#include <linux/bootmem.h>
|
|
EXPORT_SYMBOL(min_low_pfn); /* defined by bootmem.c, but not exported by generic code */
|
|
EXPORT_SYMBOL(max_low_pfn); /* defined by bootmem.c, but not exported by generic code */
|
|
#endif
|
|
|
|
#include <asm/processor.h>
|
|
EXPORT_SYMBOL(per_cpu__cpu_info);
|
|
#ifdef CONFIG_SMP
|
|
EXPORT_SYMBOL(per_cpu__local_per_cpu_offset);
|
|
#endif
|
|
|
|
#include <asm/uaccess.h>
|
|
EXPORT_SYMBOL(__copy_user);
|
|
EXPORT_SYMBOL(__do_clear_user);
|
|
EXPORT_SYMBOL(__strlen_user);
|
|
EXPORT_SYMBOL(__strncpy_from_user);
|
|
EXPORT_SYMBOL(__strnlen_user);
|
|
|
|
/* from arch/ia64/lib */
|
|
extern void __divsi3(void);
|
|
extern void __udivsi3(void);
|
|
extern void __modsi3(void);
|
|
extern void __umodsi3(void);
|
|
extern void __divdi3(void);
|
|
extern void __udivdi3(void);
|
|
extern void __moddi3(void);
|
|
extern void __umoddi3(void);
|
|
|
|
EXPORT_SYMBOL(__divsi3);
|
|
EXPORT_SYMBOL(__udivsi3);
|
|
EXPORT_SYMBOL(__modsi3);
|
|
EXPORT_SYMBOL(__umodsi3);
|
|
EXPORT_SYMBOL(__divdi3);
|
|
EXPORT_SYMBOL(__udivdi3);
|
|
EXPORT_SYMBOL(__moddi3);
|
|
EXPORT_SYMBOL(__umoddi3);
|
|
|
|
#if defined(CONFIG_MD_RAID456) || defined(CONFIG_MD_RAID456_MODULE)
|
|
extern void xor_ia64_2(void);
|
|
extern void xor_ia64_3(void);
|
|
extern void xor_ia64_4(void);
|
|
extern void xor_ia64_5(void);
|
|
|
|
EXPORT_SYMBOL(xor_ia64_2);
|
|
EXPORT_SYMBOL(xor_ia64_3);
|
|
EXPORT_SYMBOL(xor_ia64_4);
|
|
EXPORT_SYMBOL(xor_ia64_5);
|
|
#endif
|
|
|
|
#include <asm/pal.h>
|
|
EXPORT_SYMBOL(ia64_pal_call_phys_stacked);
|
|
EXPORT_SYMBOL(ia64_pal_call_phys_static);
|
|
EXPORT_SYMBOL(ia64_pal_call_stacked);
|
|
EXPORT_SYMBOL(ia64_pal_call_static);
|
|
EXPORT_SYMBOL(ia64_load_scratch_fpregs);
|
|
EXPORT_SYMBOL(ia64_save_scratch_fpregs);
|
|
|
|
#include <asm/unwind.h>
|
|
EXPORT_SYMBOL(unw_init_running);
|
|
|
|
#if defined(CONFIG_IA64_ESI) || defined(CONFIG_IA64_ESI_MODULE)
|
|
extern void esi_call_phys (void);
|
|
EXPORT_SYMBOL_GPL(esi_call_phys);
|
|
#endif
|
|
extern char ia64_ivt[];
|
|
EXPORT_SYMBOL(ia64_ivt);
|
|
|
|
#include <asm/ftrace.h>
|
|
#ifdef CONFIG_FUNCTION_TRACER
|
|
/* mcount is defined in assembly */
|
|
EXPORT_SYMBOL(_mcount);
|
|
#endif
|