diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2020-12-14 18:49:23 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2020-12-14 18:54:30 +0100 |
| commit | c7b858ff8d2e8b2d785f74b2d319bc9c839f4faa (patch) | |
| tree | 9ad109d5999444dfb3a281678b6b63d2570a76cd /archival | |
| parent | fd3c512f88d43e6633bd3c3110cfa0bb321adaa8 (diff) | |
| download | busybox-c7b858ff8d2e8b2d785f74b2d319bc9c839f4faa.tar.gz | |
libbb: add and use infrastructure for fixed page size optimization
function old new delta
procps_scan 1121 1118 -3
getpagesize 6 - -6
rpm_main 1037 1027 -10
rpm2cpio_main 120 110 -10
ptok 38 21 -17
time_main 1282 1261 -21
mkswap_main 317 278 -39
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/6 up/down: 0/-106) Total: -106 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival')
| -rw-r--r-- | archival/rpm.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/archival/rpm.c b/archival/rpm.c index a4d850b46..af8db99a6 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]); |