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Date: Mon, 2 Jul 2012 17:27:04 -0700 From: Andi Kleen <andi@...stfloor.org> To: jkosina@...e.cz Cc: linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com> Subject: [PATCH] floppy: Run floppy initialization asynchronous From: Andi Kleen <ak@...ux.intel.com> floppy_init is quite slow, 3s on my test system to determine that there is no floppy. Run it asynchronous to the other init calls to improve boot time. Signed-off-by: Andi Kleen <ak@...ux.intel.com> --- drivers/block/floppy.c | 21 ++++++++++++++++++++- 1 files changed, 20 insertions(+), 1 deletions(-) diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index cce7df3..8b5769b 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -191,6 +191,7 @@ static int print_unex = 1; #include <linux/mutex.h> #include <linux/io.h> #include <linux/uaccess.h> +#include <linux/async.h> /* * PS/2 floppies have much slower step rates than regular floppies. @@ -4122,7 +4123,7 @@ static struct kobject *floppy_find(dev_t dev, int *part, void *data) return get_disk(disks[drive]); } -static int __init floppy_init(void) +static int __init do_floppy_init(void) { int i, unit, drive; int err, dr; @@ -4337,6 +4338,24 @@ out_put_disk: return err; } +#ifndef MODULE +static __init void floppy_async_init(void *data, async_cookie_t cookie) +{ + do_floppy_init(); +} +#endif + +static int __init floppy_init(void) +{ +#ifdef MODULE + return do_floppy_init(void); +#else + /* Don't hold up the bootup by the floppy initialization */ + async_schedule(floppy_async_init, NULL); + return 0; +#endif +} + static const struct io_region { int offset; int size; -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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