cregit-Linux how code gets into the kernel

Release 4.14 arch/powerpc/include/uapi/asm/auxvec.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _ASM_POWERPC_AUXVEC_H

#define _ASM_POWERPC_AUXVEC_H

/*
 * We need to put in some extra aux table entries to tell glibc what
 * the cache block size is, so it can use the dcbz instruction safely.
 */

#define AT_DCACHEBSIZE		19

#define AT_ICACHEBSIZE		20

#define AT_UCACHEBSIZE		21
/* A special ignored type value for PPC, for glibc compatibility.  */

#define AT_IGNOREPPC		22

/* The vDSO location. We have to use the same value as x86 for glibc's
 * sake :-)
 */

#define AT_SYSINFO_EHDR		33

/*
 * AT_*CACHEBSIZE above represent the cache *block* size which is
 * the size that is affected by the cache management instructions.
 *
 * It doesn't nececssarily matches the cache *line* size which is
 * more of a performance tuning hint. Additionally the latter can
 * be different for the different cache levels.
 *
 * The set of entries below represent more extensive information
 * about the caches, in the form of two entry per cache type,
 * one entry containing the cache size in bytes, and the other
 * containing the cache line size in bytes in the bottom 16 bits
 * and the cache associativity in the next 16 bits.
 *
 * The associativity is such that if N is the 16-bit value, the
 * cache is N way set associative. A value if 0xffff means fully
 * associative, a value of 1 means directly mapped.
 *
 * For all these fields, a value of 0 means that the information
 * is not known.
 */


#define AT_L1I_CACHESIZE	40

#define AT_L1I_CACHEGEOMETRY	41

#define AT_L1D_CACHESIZE	42

#define AT_L1D_CACHEGEOMETRY	43

#define AT_L2_CACHESIZE		44

#define AT_L2_CACHEGEOMETRY	45

#define AT_L3_CACHESIZE		46

#define AT_L3_CACHEGEOMETRY	47


#define AT_VECTOR_SIZE_ARCH	14 
/* entries in ARCH_DLINFO */

#endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Benjamin Herrenschmidt3448.57%120.00%
H. J. Lu2941.43%120.00%
David Howells45.71%120.00%
Kumar Gala22.86%120.00%
Greg Kroah-Hartman11.43%120.00%
Total70100.00%5100.00%
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