From 4da0b66c6e9ea7ba78a19f9f186779826d89f8b0 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Fri, 5 Mar 2010 10:47:37 -0700 Subject: [PATCH] vsprintf: move %pR resource printf_specs off the stack This adds separate I/O and memory specs, so we don't have to change the field width in a shared spec, which then lets us make all the specs const and static, since they never change. Signed-off-by: Bjorn Helgaas Signed-off-by: Linus Torvalds --- lib/vsprintf.c | 45 ++++++++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 21 deletions(-) diff --git a/lib/vsprintf.c b/lib/vsprintf.c index a900d136e643..0d461c7c14db 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -597,22 +597,29 @@ static char *resource_string(char *buf, char *end, struct resource *res, #ifndef MEM_RSRC_PRINTK_SIZE #define MEM_RSRC_PRINTK_SIZE 10 #endif - struct printf_spec hex_spec = { + static const struct printf_spec io_spec = { .base = 16, + .field_width = IO_RSRC_PRINTK_SIZE, .precision = -1, .flags = SPECIAL | SMALL | ZEROPAD, }; - struct printf_spec dec_spec = { + static const struct printf_spec mem_spec = { + .base = 16, + .field_width = MEM_RSRC_PRINTK_SIZE, + .precision = -1, + .flags = SPECIAL | SMALL | ZEROPAD, + }; + static const struct printf_spec dec_spec = { .base = 10, .precision = -1, .flags = 0, }; - struct printf_spec str_spec = { + static const struct printf_spec str_spec = { .field_width = -1, .precision = 10, .flags = LEFT, }; - struct printf_spec flag_spec = { + static const struct printf_spec flag_spec = { .base = 16, .precision = -1, .flags = SPECIAL | SMALL, @@ -628,35 +635,31 @@ static char *resource_string(char *buf, char *end, struct resource *res, 2*RSRC_BUF_SIZE + FLAG_BUF_SIZE + RAW_BUF_SIZE)]; char *p = sym, *pend = sym + sizeof(sym); - int size = -1, addr = 0; int decode = (fmt[0] == 'R') ? 1 : 0; - - if (res->flags & IORESOURCE_IO) { - size = IO_RSRC_PRINTK_SIZE; - addr = 1; - } else if (res->flags & IORESOURCE_MEM) { - size = MEM_RSRC_PRINTK_SIZE; - addr = 1; - } + const struct printf_spec *specp; *p++ = '['; - if (res->flags & IORESOURCE_IO) + if (res->flags & IORESOURCE_IO) { p = string(p, pend, "io ", str_spec); - else if (res->flags & IORESOURCE_MEM) + specp = &io_spec; + } else if (res->flags & IORESOURCE_MEM) { p = string(p, pend, "mem ", str_spec); - else if (res->flags & IORESOURCE_IRQ) + specp = &mem_spec; + } else if (res->flags & IORESOURCE_IRQ) { p = string(p, pend, "irq ", str_spec); - else if (res->flags & IORESOURCE_DMA) + specp = &dec_spec; + } else if (res->flags & IORESOURCE_DMA) { p = string(p, pend, "dma ", str_spec); - else { + specp = &dec_spec; + } else { p = string(p, pend, "??? ", str_spec); + specp = &mem_spec; decode = 0; } - hex_spec.field_width = size; - p = number(p, pend, res->start, addr ? hex_spec : dec_spec); + p = number(p, pend, res->start, *specp); if (res->start != res->end) { *p++ = '-'; - p = number(p, pend, res->end, addr ? hex_spec : dec_spec); + p = number(p, pend, res->end, *specp); } if (decode) { if (res->flags & IORESOURCE_MEM_64) -- 2.20.1