This patch reduces lib.a code size by 173 bytes on my Core 2 with gcc 4.4.1
even considering that it exports a newly defined function skip_spaces()
to drivers:
text data bss dec hex filename
64867 840 592 66299 102fb (TOTALS-lib.a-before)
64954 584 588 66126 1024e (TOTALS-lib.a-after)
and implements some code tidy up.
Besides reducing lib.a size, it converts many in-tree drivers to use the
newly defined function, which makes another small reduction on kernel size
overall when those drivers are used.
p.s.: Ingo, I hope to have finally fixed my environment by using send-email now.
Please let me know if you have any problem with these and thank you for the
good advice. get_maintainer.pl gave lots of people as output, I hope that's ok.
Changelog:
v4: convert drivers over newly defined skip_spaces() function
v3: improved comments on patch 5/7 and factorize a switch statement on 6/7
as per suggestions from Ingo and Frederic (thanks!)
v2: addressed feedback from Frederic Weisbecker review (thanks!!)
and split into separate patches
v1: original submission
André Goddard Rosa (12):
vsprintf: factorize "(null)" string
vsprintf: pre-calculate final string length for later use
vsprintf: give it some care to please checkpatch.pl
vsprintf: use TOLOWER whenever possible
vsprintf: reduce code size by avoiding extra check
vsprintf: move local vars to block local vars and remove unneeded
ones
vsprintf: factor out skip_space code in a separate function
vsprintf: reuse almost identical simple_strtoulX() functions
ctype: constify read-only _ctype string
string: factorize skip_spaces and export it to be generally available
string: on strstrip(), first remove leading spaces before running
over str
tree-wide: convert open calls to remove spaces to skip_spaces() lib
function
arch/s390/kernel/debug.c | 3 +-
arch/um/drivers/mconsole_kern.c | 16 +-
arch/x86/kernel/cpu/mtrr/if.c | 11 +-
drivers/md/dm-table.c | 6 +-
drivers/md/md.c | 4 +-
drivers/parisc/pdc_stable.c | 9 +-
drivers/platform/x86/thinkpad_acpi.c | 7 +-
drivers/pnp/interface.c | 36 +---
drivers/s390/block/dasd_proc.c | 5 +-
drivers/video/backlight/lcd.c | 4 +-
drivers/video/display/display-sysfs.c | 2 +-
fs/cachefiles/daemon.c | 8 +-
fs/ext4/super.c | 7 +-
include/linux/ctype.h | 2 +-
include/linux/string.h | 1 +
kernel/params.c | 8 +-
lib/argv_split.c | 13 +-
lib/ctype.c | 50 +++---
lib/dynamic_debug.c | 4 +-
lib/string.c | 19 ++-
lib/vsprintf.c | 342 ++++++++++++++++-----------------
net/irda/irnet/irnet.h | 1 +
net/irda/irnet/irnet_ppp.c | 8 +-
net/netfilter/xt_recent.c | 3 +-
sound/pci/hda/hda_hwdep.c | 7 +-
25 files changed, 264 insertions(+), 312 deletions(-)
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