diff options
Diffstat (limited to 'fs/pstore/platform.c')
| -rw-r--r-- | fs/pstore/platform.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 82c585f715e..61461ed9b6c 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -1,6 +1,7 @@ /* * Persistent Storage - platform driver interface parts. * + * Copyright (C) 2007-2008 Google, Inc. * Copyright (C) 2010 Intel Corporation <tony.luck@intel.com> * * This program is free software; you can redistribute it and/or modify @@ -22,6 +23,7 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/kmsg_dump.h> +#include <linux/console.h> #include <linux/module.h> #include <linux/pstore.h> #include <linux/string.h> @@ -156,6 +158,40 @@ static struct kmsg_dumper pstore_dumper = { .dump = pstore_dump, }; +#ifdef CONFIG_PSTORE_CONSOLE +static void pstore_console_write(struct console *con, const char *s, unsigned c) +{ + const char *e = s + c; + + while (s < e) { + unsigned long flags; + + if (c > psinfo->bufsize) + c = psinfo->bufsize; + spin_lock_irqsave(&psinfo->buf_lock, flags); + memcpy(psinfo->buf, s, c); + psinfo->write(PSTORE_TYPE_CONSOLE, 0, NULL, 0, c, psinfo); + spin_unlock_irqrestore(&psinfo->buf_lock, flags); + s += c; + c = e - s; + } +} + +static struct console pstore_console = { + .name = "pstore", + .write = pstore_console_write, + .flags = CON_PRINTBUFFER | CON_ENABLED | CON_ANYTIME, + .index = -1, +}; + +static void pstore_register_console(void) +{ + register_console(&pstore_console); +} +#else +static void pstore_register_console(void) {} +#endif + /* * platform specific persistent storage driver registers with * us here. If pstore is already mounted, call the platform @@ -193,6 +229,7 @@ int pstore_register(struct pstore_info *psi) pstore_get_records(0); kmsg_dump_register(&pstore_dumper); + pstore_register_console(); pstore_timer.expires = jiffies + PSTORE_INTERVAL; add_timer(&pstore_timer); |