diff options
Diffstat (limited to 'package/busybox/config/libbb')
| -rw-r--r-- | package/busybox/config/libbb/Config.in | 62 |
1 files changed, 55 insertions, 7 deletions
diff --git a/package/busybox/config/libbb/Config.in b/package/busybox/config/libbb/Config.in index 8e4fe855e..66c135ec6 100644 --- a/package/busybox/config/libbb/Config.in +++ b/package/busybox/config/libbb/Config.in @@ -98,21 +98,47 @@ config BUSYBOX_MD5_SMALL default 1 # all "fast or small" options default to small range 0 3 help - Trade binary size versus speed for the md5sum algorithm. + Trade binary size versus speed for the md5 algorithm. Approximate values running uClibc and hashing linux-2.4.4.tar.bz2 were: - value user times (sec) text size (386) - 0 (fastest) 1.1 6144 - 1 1.4 5392 - 2 3.0 5088 - 3 (smallest) 5.1 4912 + value user times (sec) text size (386) + 0 (fastest) 1.1 6144 + 1 1.4 5392 + 2 3.0 5088 + 3 (smallest) 5.1 4912 + +config BUSYBOX_SHA1_SMALL + int "SHA1: Trade bytes for speed (0:fast, 3:slow)" + default 3 # all "fast or small" options default to small + range 0 3 + help + Trade binary size versus speed for the sha1 algorithm. + With FEATURE_COPYBUF_KB=64: + throughput MB/s size of sha1_process_block64 + value 486 x86-64 486 x86-64 + 0 440 485 3481 3502 + 1 265 265 641 696 + 2,3 220 210 342 364 + +config BUSYBOX_SHA1_HWACCEL + bool "SHA1: Use hardware accelerated instructions if possible" + default y + help + On x86, this adds ~590 bytes of code. Throughput + is about twice as fast as fully-unrolled generic code. + +config BUSYBOX_SHA256_HWACCEL + bool "SHA256: Use hardware accelerated instructions if possible" + default y + help + On x86, this adds ~1k bytes of code. config BUSYBOX_SHA3_SMALL int "SHA3: Trade bytes for speed (0:fast, 1:slow)" default 1 # all "fast or small" options default to small range 0 1 help - Trade binary size versus speed for the sha3sum algorithm. + Trade binary size versus speed for the sha3 algorithm. SHA3_SMALL=0 compared to SHA3_SMALL=1 (approximate): 64-bit x86: +270 bytes of code, 45% faster 32-bit x86: +450 bytes of code, 75% faster @@ -399,3 +425,25 @@ config BUSYBOX_UNICODE_PRESERVE_BROKEN For example, this means that entering 'l', 's', ' ', 0xff, [Enter] at shell prompt will list file named 0xff (single char name with char value 255), not file named '?'. + +choice + prompt "Use LOOP_CONFIGURE for losetup and loop mounts" + default BUSYBOX_TRY_LOOP_CONFIGURE + help + LOOP_CONFIGURE is added to Linux 5.8 + https://lwn.net/Articles/820408/ + This allows userspace to completely setup a loop device with a single + ioctl, removing the in-between state where the device can be partially + configured - eg the loop device has a backing file associated with it, + but is reading from the wrong offset. + +config BUSYBOX_LOOP_CONFIGURE + bool "use LOOP_CONFIGURE, needs kernel >= 5.8" + +config BUSYBOX_NO_LOOP_CONFIGURE + bool "use LOOP_SET_FD + LOOP_SET_STATUS" + +config BUSYBOX_TRY_LOOP_CONFIGURE + bool "try LOOP_CONFIGURE, fall back to LOOP_SET_FD + LOOP_SET_STATUS" + +endchoice |