diff options
| -rw-r--r-- | archival/rpm.c | 10 | ||||
| -rw-r--r-- | include/libbb.h | 18 | ||||
| -rw-r--r-- | libbb/procps.c | 4 | ||||
| -rw-r--r-- | miscutils/devmem.c | 2 | ||||
| -rw-r--r-- | miscutils/hexedit.c | 14 | ||||
| -rw-r--r-- | miscutils/time.c | 7 | ||||
| -rw-r--r-- | util-linux/mkswap.c | 2 |
7 files changed, 37 insertions, 20 deletions
diff --git a/archival/rpm.c b/archival/rpm.c index a4d850b..af8db99 100644 --- a/archival/rpm.c +++ b/archival/rpm.c @@ -83,7 +83,9 @@ struct globals { void *map; rpm_index *mytags; int tagcount; - unsigned mapsize, pagesize; + unsigned mapsize; + IF_VARIABLE_ARCH_PAGESIZE(unsigned pagesize;) +#define G_pagesize cached_pagesize(G.pagesize) } FIX_ALIASING; #define G (*(struct globals*)bb_common_bufsiz1) #define INIT_G() do { setup_common_bufsiz(); } while (0) @@ -141,7 +143,7 @@ static int rpm_gettags(const char *filename) G.mytags = tags; /* Map the store */ - storepos = (storepos + G.pagesize) & -(int)G.pagesize; + storepos = (storepos + G_pagesize) & -(int)G_pagesize; /* remember size for munmap */ G.mapsize = storepos; /* some NOMMU systems prefer MAP_PRIVATE over MAP_SHARED */ @@ -356,7 +358,7 @@ int rpm_main(int argc, char **argv) int opt, func = 0; INIT_G(); - G.pagesize = getpagesize(); + INIT_PAGESIZE(G.pagesize); while ((opt = getopt(argc, argv, "iqpldc")) != -1) { switch (opt) { @@ -523,7 +525,7 @@ int rpm2cpio_main(int argc UNUSED_PARAM, char **argv) int rpm_fd; INIT_G(); - G.pagesize = getpagesize(); + INIT_PAGESIZE(G.pagesize); rpm_fd = rpm_gettags(argv[1]); diff --git a/include/libbb.h b/include/libbb.h index a74b311..db5bf7a 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -391,6 +391,24 @@ void *mmap_read(int fd, size_t size) FAST_FUNC; void *mmap_anon(size_t size) FAST_FUNC; void *xmmap_anon(size_t size) FAST_FUNC; +#if defined(__x86_64__) || defined(i386) +# define BB_ARCH_FIXED_PAGESIZE 4096 +#else /* if defined(ARCH) */ +/* add you favorite arch today! */ +#endif + +#if defined BB_ARCH_FIXED_PAGESIZE +# define IF_VARIABLE_ARCH_PAGESIZE(...) /*nothing*/ +# define bb_getpagesize() BB_ARCH_FIXED_PAGESIZE +# define INIT_PAGESIZE(var) ((void)0) +# define cached_pagesize(var) BB_ARCH_FIXED_PAGESIZE +#else +# define IF_VARIABLE_ARCH_PAGESIZE(...) __VA_ARGS__ +# define bb_getpagesize() getpagesize() +# define INIT_PAGESIZE(var) ((var) = getpagesize()) +# define cached_pagesize(var) (var) +#endif + //TODO: supply a pointer to char[11] buffer (avoid statics)? extern const char *bb_mode_string(mode_t mode) FAST_FUNC; diff --git a/libbb/procps.c b/libbb/procps.c index 4cc3cb2..975e0d4 100644 --- a/libbb/procps.c +++ b/libbb/procps.c @@ -94,15 +94,15 @@ static int read_to_buf(const char *filename, void *buf) static procps_status_t* FAST_FUNC alloc_procps_scan(void) { - unsigned n = getpagesize(); procps_status_t* sp = xzalloc(sizeof(procps_status_t)); - sp->dir = xopendir("/proc"); + unsigned n = bb_getpagesize(); while (1) { n >>= 1; if (!n) break; sp->shift_pages_to_bytes++; } sp->shift_pages_to_kb = sp->shift_pages_to_bytes - 10; + sp->dir = xopendir("/proc"); return sp; } diff --git a/miscutils/devmem.c b/miscutils/devmem.c index e8dce52..f9f0276 100644 --- a/miscutils/devmem.c +++ b/miscutils/devmem.c @@ -75,7 +75,7 @@ int devmem_main(int argc UNUSED_PARAM, char **argv) bb_show_usage(); /* one of bb_strtouXX failed */ fd = xopen("/dev/mem", argv[3] ? (O_RDWR | O_SYNC) : (O_RDONLY | O_SYNC)); - mapped_size = page_size = getpagesize(); + mapped_size = page_size = bb_getpagesize(); offset_in_page = (unsigned)target & (page_size - 1); if (offset_in_page + width > page_size) { /* This access spans pages. diff --git a/miscutils/hexedit.c b/miscutils/hexedit.c index 898d773..f8ff9b6 100644 --- a/miscutils/hexedit.c +++ b/miscutils/hexedit.c @@ -31,7 +31,8 @@ struct globals { int fd; unsigned height; unsigned row; - unsigned pagesize; + IF_VARIABLE_ARCH_PAGESIZE(unsigned pagesize;) +#define G_pagesize cached_pagesize(G.pagesize) uint8_t *baseaddr; uint8_t *current_byte; uint8_t *eof_byte; @@ -46,15 +47,6 @@ struct globals { SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ } while (0) -//TODO: move to libbb -#if defined(__x86_64__) || defined(i386) -# define G_pagesize 4096 -# define INIT_PAGESIZE() ((void)0) -#else -# define G_pagesize (G.pagesize) -# define INIT_PAGESIZE() ((void)(G.pagesize = getpagesize())) -#endif - /* hopefully there aren't arches with PAGE_SIZE > 64k */ #define G_mapsize (64*1024) @@ -262,7 +254,7 @@ int hexedit_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int hexedit_main(int argc UNUSED_PARAM, char **argv) { INIT_G(); - INIT_PAGESIZE(); + INIT_PAGESIZE(G.pagesize); get_terminal_width_height(-1, NULL, &G.height); if (1) { diff --git a/miscutils/time.c b/miscutils/time.c index d15d363..0006c59 100644 --- a/miscutils/time.c +++ b/miscutils/time.c @@ -111,6 +111,10 @@ static void printargv(char *const *argv) This is funky since the pagesize could be less than 1K. Note: Some machines express getrusage statistics in terms of K, others in terms of pages. */ +#ifdef BB_ARCH_FIXED_PAGESIZE +# define pagesize BB_ARCH_FIXED_PAGESIZE +# define ptok(pagesize, pages) ptok(pages) +#endif static unsigned long ptok(const unsigned pagesize, const unsigned long pages) { unsigned long tmp; @@ -124,6 +128,7 @@ static unsigned long ptok(const unsigned pagesize, const unsigned long pages) tmp = pages * pagesize; /* Larger first, */ return tmp / 1024; /* then smaller. */ } +#undef pagesize /* summarize: Report on the system use of a command. @@ -177,7 +182,7 @@ static void summarize(const char *fmt, char **command, resource_t *resp) { unsigned vv_ms; /* Elapsed virtual (CPU) milliseconds */ unsigned cpu_ticks; /* Same, in "CPU ticks" */ - unsigned pagesize = getpagesize(); + unsigned pagesize = bb_getpagesize(); /* Impossible: we do not use WUNTRACED flag in wait()... if (WIFSTOPPED(resp->waitstatus)) diff --git a/util-linux/mkswap.c b/util-linux/mkswap.c index 9e51a1d..8fe5d02 100644 --- a/util-linux/mkswap.c +++ b/util-linux/mkswap.c @@ -128,7 +128,7 @@ int mkswap_main(int argc UNUSED_PARAM, char **argv) /* Figure out how big the device is */ len = get_volume_size_in_bytes(fd, argv[1], 1024, /*extend:*/ 1); - pagesize = getpagesize(); + pagesize = bb_getpagesize(); len -= pagesize; /* Announce our intentions */ |