Re: PATCH 1/3] blktrace: support per-partition tracing

[Ingo Molnar <mingo@elte.hu>]

* Li Zefan <lizf@cn.fujitsu.com> wrote:

> >> @@ -193,6 +194,7 @@ extern void __trace_note_message(struct blk_trace *, const char *fmt, ...);
> >>  extern void blk_add_driver_data(struct request_queue *q, struct request *rq,
> >>  				void *data, size_t len);
> >>  extern int blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
> >> +			   struct block_device *bdev,
> >>  			   char __user *arg);
> >>  extern int blk_trace_startstop(struct request_queue *q, int start);
> >>  extern int blk_trace_remove(struct request_queue *q);
> > 
> > Small detail: you forgot about the !CONFIG_BLK_DEV_IO_TRACE case 
> > here, the wrapper macros there need to be updated.
> > 
> 
> Ah, sorry..
> 
> > (no need to resend - i fixed this up in the 1/3 and 3/3 patches)
> > 
> 
> and thanks! (But I think only 1/3 patch needs to be fixed)

3/3 had context dependencies - no functionality dependency.

> The 3rd patch can be for 2.6.30, if Ted or somene else wants to 
> use ftrace-plugin blktrace to trace dm devices in 2.6.30.

ok, good point - we can cherry-pick it over into tracing/urgent 
after Ted reports back his experiences with these changes.

	Ingo