#ifndef TAIA_H #define TAIA_H #include #include #include #include #include "rnd.h" struct tai { uint64_t x; }; struct taia { struct tai sec; uint32_t nano; uint32_t atto; }; static inline void tai_pack(unsigned char *s, struct tai *t) { uint64_t x; x = t->x; s[7] = x & 255; x >>= 8; s[6] = x & 255; x >>= 8; s[5] = x & 255; x >>= 8; s[4] = x & 255; x >>= 8; s[3] = x & 255; x >>= 8; s[2] = x & 255; x >>= 8; s[1] = x & 255; x >>= 8; s[0] = x; } static inline void tai_unpack(unsigned char *s, struct tai *t) { uint64_t x; x = (unsigned char) s[0]; x <<= 8; x += (unsigned char) s[1]; x <<= 8; x += (unsigned char) s[2]; x <<= 8; x += (unsigned char) s[3]; x <<= 8; x += (unsigned char) s[4]; x <<= 8; x += (unsigned char) s[5]; x <<= 8; x += (unsigned char) s[6]; x <<= 8; x += (unsigned char) s[7]; t->x = x; } static inline void taia_pack(unsigned char *s, struct taia *t) { unsigned long x; tai_pack(s, &t->sec); s += 8; x = t->atto; s[7] = x & 255; x >>= 8; s[6] = x & 255; x >>= 8; s[5] = x & 255; x >>= 8; s[4] = x; x = t->nano; s[3] = x & 255; x >>= 8; s[2] = x & 255; x >>= 8; s[1] = x & 255; x >>= 8; s[0] = x; } static inline void taia_unpack(unsigned char *s, struct taia *t) { unsigned long x; tai_unpack(s, &t->sec); s += 8; x = (unsigned char) s[4]; x <<= 8; x += (unsigned char) s[5]; x <<= 8; x += (unsigned char) s[6]; x <<= 8; x += (unsigned char) s[7]; t->atto = x; x = (unsigned char) s[0]; x <<= 8; x += (unsigned char) s[1]; x <<= 8; x += (unsigned char) s[2]; x <<= 8; x += (unsigned char) s[3]; t->nano = x; } #define tai_unix(t, u) \ ((void) ((t)->x = 4611686018427387914ULL + \ (uint64_t) (u))) static inline void taia_now(struct taia *t) { struct timeval now; gettimeofday(&now, NULL); tai_unix(&t->sec, now.tv_sec); t->nano = 1000 * now.tv_usec + 500; /* We don't really have it, but bring some noise in. */ t->atto = secrand(); } static inline void taia_sub(struct taia *res, const struct taia *u, const struct taia *v) { unsigned long unano = u->nano; unsigned long uatto = u->atto; res->sec.x = u->sec.x - v->sec.x; res->nano = unano - v->nano; res->atto = uatto - v->atto; if (res->atto > uatto) { res->atto += 1000000000UL; --res->nano; } if (res->nano > unano) { res->nano += 1000000000UL; --res->sec.x; } } static inline void taia_add(struct taia *res, const struct taia *u, const struct taia *v) { res->sec.x = u->sec.x + v->sec.x; res->nano = u->nano + v->nano; res->atto = u->atto + v->atto; if (res->atto > 999999999UL) { res->atto -= 1000000000UL; ++res->nano; } if (res->nano > 999999999UL) { res->nano -= 1000000000UL; ++res->sec.x; } } static inline int taia_less(const struct taia *t, const struct taia *u) { if (t->sec.x < u->sec.x) return 1; if (t->sec.x > u->sec.x) return 0; if (t->nano < u->nano) return 1; if (t->nano > u->nano) return 0; return t->atto < u->atto; } extern bool taia_looks_good(struct taia *arr_taia, struct taia *pkt_taia); #endif /* TAIA_H */ value='15'>15space:mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
commite7aa8c2eb11ba69b1b69099c3c7bd6be3087b0ba (patch)
treef63906f41699c8e38af9d12b063e2ceab0286ef2 /Documentation/io-mapping.txt
parente34bac726d27056081d0250c0e173e4b155aa340 (diff)
parent868c97a846a73e937d835b09b8c885a69df50ec8 (diff)
Merge tag 'docs-4.10' of git://git.lwn.net/linuxHEADmaster
Pull documentation update from Jonathan Corbet: "These are the documentation changes for 4.10. It's another busy cycle for the docs tree, as the sphinx conversion continues. Highlights include: - Further work on PDF output, which remains a bit of a pain but should be more solid now. - Five more DocBook template files converted to Sphinx. Only 27 to go... Lots of plain-text files have also been converted and integrated. - Images in binary formats have been replaced with more source-friendly versions. - Various bits of organizational work, including the renaming of various files discussed at the kernel summit. - New documentation for the device_link mechanism. ... and, of course, lots of typo fixes and small updates" * tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits) dma-buf: Extract dma-buf.rst Update Documentation/00-INDEX docs: 00-INDEX: document directories/files with no docs docs: 00-INDEX: remove non-existing entries docs: 00-INDEX: add missing entries for documentation files/dirs docs: 00-INDEX: consolidate process/ and admin-guide/ description scripts: add a script to check if Documentation/00-INDEX is sane Docs: change sh -> awk in REPORTING-BUGS Documentation/core-api/device_link: Add initial documentation core-api: remove an unexpected unident ppc/idle: Add documentation for powersave=off Doc: Correct typo, "Introdution" => "Introduction" Documentation/atomic_ops.txt: convert to ReST markup Documentation/local_ops.txt: convert to ReST markup Documentation/assoc_array.txt: convert to ReST markup docs-rst: parse-headers.pl: cleanup the documentation docs-rst: fix media cleandocs target docs-rst: media/Makefile: reorganize the rules docs-rst: media: build SVG from graphviz files docs-rst: replace bayer.png by a SVG image ...
Diffstat (limited to 'Documentation/io-mapping.txt')