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authorGravatar Denys Vlasenko <vda.linux@googlemail.com>2020-12-14 18:49:23 +0100
committerGravatar Denys Vlasenko <vda.linux@googlemail.com>2020-12-14 18:54:30 +0100
commitc7b858ff8d2e8b2d785f74b2d319bc9c839f4faa (patch)
tree9ad109d5999444dfb3a281678b6b63d2570a76cd /archival/rpm.c
parentfd3c512f88d43e6633bd3c3110cfa0bb321adaa8 (diff)
downloadbusybox-c7b858ff8d2e8b2d785f74b2d319bc9c839f4faa.tar.gz
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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/rpm.c')
-rw-r--r--archival/rpm.c10
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]);