diff options
author | Patrick McHardy <kaber@trash.net> | 2011-01-14 14:12:37 +0100 |
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committer | Patrick McHardy <kaber@trash.net> | 2011-01-14 14:12:37 +0100 |
commit | 0134e89c7bcc9fde1da962c82a120691e185619f (patch) | |
tree | 3e03335cf001019a2687d161e956de4f73379984 /arch/sparc/prom/printf.c | |
parent | c7066f70d9610df0b9406cc635fc09e86136e714 (diff) | |
parent | 6faee60a4e82075853a437831768cc9e2e563e4e (diff) |
Merge branch 'master' of git://1984.lsi.us.es/net-next-2.6
Conflicts:
net/ipv4/route.c
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'arch/sparc/prom/printf.c')
-rw-r--r-- | arch/sparc/prom/printf.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c index ca869266b9f..d9682f06b3b 100644 --- a/arch/sparc/prom/printf.c +++ b/arch/sparc/prom/printf.c @@ -15,22 +15,45 @@ #include <linux/kernel.h> #include <linux/compiler.h> +#include <linux/spinlock.h> #include <asm/openprom.h> #include <asm/oplib.h> +#define CONSOLE_WRITE_BUF_SIZE 1024 + static char ppbuf[1024]; +static char console_write_buf[CONSOLE_WRITE_BUF_SIZE]; +static DEFINE_RAW_SPINLOCK(console_write_lock); void notrace prom_write(const char *buf, unsigned int n) { - char ch; + unsigned int dest_len; + unsigned long flags; + char *dest; + + dest = console_write_buf; + raw_spin_lock_irqsave(&console_write_lock, flags); - while (n != 0) { - --n; - if ((ch = *buf++) == '\n') - prom_putchar('\r'); - prom_putchar(ch); + dest_len = 0; + while (n-- != 0) { + char ch = *buf++; + if (ch == '\n') { + *dest++ = '\r'; + dest_len++; + } + *dest++ = ch; + dest_len++; + if (dest_len >= CONSOLE_WRITE_BUF_SIZE - 1) { + prom_console_write_buf(console_write_buf, dest_len); + dest = console_write_buf; + dest_len = 0; + } } + if (dest_len) + prom_console_write_buf(console_write_buf, dest_len); + + raw_spin_unlock_irqrestore(&console_write_lock, flags); } void notrace prom_printf(const char *fmt, ...) |