diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-05-27 00:31:00 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-27 10:11:35 +0200 |
| commit | 0922abdc3982ae54cbe1b24ac5aa91a260eca1bb (patch) | |
| tree | 3107fc3f1af7e4a1fd6edd78957c40486153990c /drivers/char/hvc_xen.c | |
| parent | xen: add raw console write functions for debug (diff) | |
| download | linux-0922abdc3982ae54cbe1b24ac5aa91a260eca1bb.tar.xz linux-0922abdc3982ae54cbe1b24ac5aa91a260eca1bb.zip | |
xen: make early console also write to debug console
When using "earlyprintk=xen", also write the console output to the raw
debug console. This will appear on dom0's console if the hypervisor
has been compiled to allow it.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/char/hvc_xen.c')
| -rw-r--r-- | drivers/char/hvc_xen.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c index e97d9d168325..2413af342a81 100644 --- a/drivers/char/hvc_xen.c +++ b/drivers/char/hvc_xen.c @@ -134,12 +134,27 @@ module_init(xen_init); module_exit(xen_fini); console_initcall(xen_cons_init); +static void raw_console_write(const char *str, int len) +{ + while(len > 0) { + int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str); + if (rc <= 0) + break; + + str += rc; + len -= rc; + } +} + +#ifdef CONFIG_EARLY_PRINTK static void xenboot_write_console(struct console *console, const char *string, unsigned len) { unsigned int linelen, off = 0; const char *pos; + raw_console_write(string, len); + while (off < len && NULL != (pos = strchr(string+off, '\n'))) { linelen = pos-string+off; if (off + linelen > len) @@ -155,21 +170,13 @@ static void xenboot_write_console(struct console *console, const char *string, struct console xenboot_console = { .name = "xenboot", .write = xenboot_write_console, - .flags = CON_PRINTBUFFER | CON_BOOT, + .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME, }; +#endif /* CONFIG_EARLY_PRINTK */ void xen_raw_console_write(const char *str) { - int len = strlen(str); - - while(len > 0) { - int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str); - if (rc <= 0) - break; - - str += rc; - len -= rc; - } + raw_console_write(str, strlen(str)); } void xen_raw_printk(const char *fmt, ...) |