mirror of https://gitee.com/openkylin/linux.git
e7d2860b69
Makes use of skip_spaces() defined in lib/string.c for removing leading spaces from strings all over the tree. It decreases lib.a code size by 47 bytes and reuses the function tree-wide: text data bss dec hex filename 64688 584 592 65864 10148 (TOTALS-BEFORE) 64641 584 592 65817 10119 (TOTALS-AFTER) Also, while at it, if we see (*str && isspace(*str)), we can be sure to remove the first condition (*str) as the second one (isspace(*str)) also evaluates to 0 whenever *str == 0, making it redundant. In other words, "a char equals zero is never a space". Julia Lawall tried the semantic patch (http://coccinelle.lip6.fr) below, and found occurrences of this pattern on 3 more files: drivers/leds/led-class.c drivers/leds/ledtrig-timer.c drivers/video/output.c @@ expression str; @@ ( // ignore skip_spaces cases while (*str && isspace(*str)) { \(str++;\|++str;\) } | - *str && isspace(*str) ) Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Cc: Julia Lawall <julia@diku.dk> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Neil Brown <neilb@suse.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: David Howells <dhowells@redhat.com> Cc: <linux-ext4@vger.kernel.org> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Patrick McHardy <kaber@trash.net> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| adp5520_bl.c | ||
| adx_bl.c | ||
| atmel-pwm-bl.c | ||
| backlight.c | ||
| corgi_lcd.c | ||
| cr_bllcd.c | ||
| da903x_bl.c | ||
| generic_bl.c | ||
| hp680_bl.c | ||
| ili9320.c | ||
| ili9320.h | ||
| jornada720_bl.c | ||
| jornada720_lcd.c | ||
| kb3886_bl.c | ||
| lcd.c | ||
| lms283gf05.c | ||
| locomolcd.c | ||
| ltv350qv.c | ||
| ltv350qv.h | ||
| mbp_nvidia_bl.c | ||
| omap1_bl.c | ||
| platform_lcd.c | ||
| progear_bl.c | ||
| pwm_bl.c | ||
| tdo24m.c | ||
| tosa_bl.c | ||
| tosa_lcd.c | ||
| vgg2432a4.c | ||
| wm831x_bl.c | ||