perf lock: add "info" subcommand for dumping misc information
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From: Hitoshi Mitake on 6 May 2010 05:40 On 05/06/10 06:10, Frederic Weisbecker wrote: > On Mon, May 03, 2010 at 02:12:00PM +0900, Hitoshi Mitake wrote: >> Hi Frederic, >> >> I added "info" subcommand to perf lock, >> this can be used as dumping metadata like thread or address of lock instances. >> "map" was removed because info should do the work of it. >> >> This will be useful not only for debugging but also for ordinary analyzing. >> >> I made this patch on perf/core of your tree, could you queue this? >> >> v2: adding example of usage >> % sudo ./perf lock info -t >> | Thread ID: comm >> | 0: swapper >> | 1: init >> | 18: migration/5 >> | 29: events/2 >> | 32: events/5 >> | 33: events/6 >> ... >> >> % sudo ./perf lock info -m >> | Address of instance: name of class >> | 0xffff8800b95adae0:&(&sighand->siglock)->rlock >> | 0xffff8800bbb41ae0:&(&sighand->siglock)->rlock >> | 0xffff8800bf165ae0:&(&sighand->siglock)->rlock >> | 0xffff8800b9576a98:&p->cred_guard_mutex >> | 0xffff8800bb890a08:&(&p->alloc_lock)->rlock >> | 0xffff8800b9522a08:&(&p->alloc_lock)->rlock >> | 0xffff8800bb8aaa08:&(&p->alloc_lock)->rlock >> | 0xffff8800bba72a08:&(&p->alloc_lock)->rlock >> | 0xffff8800bf18ea08:&(&p->alloc_lock)->rlock >> | 0xffff8800b8a0d8a0:&(&ip->i_lock)->mr_lock >> | 0xffff88009bf818a0:&(&ip->i_lock)->mr_lock >> | 0xffff88004c66b8a0:&(&ip->i_lock)->mr_lock >> | 0xffff8800bb6478a0:&(shost->host_lock)->rlock >> >> v3: fixed some problems Frederic pointed out >> * better rbtree tracking in dump_threads() >> * removed printf() and used pr_info() and pr_debug() > > > > Applied, thanks Hitoshi! > Thanks Frederic! And I prepared another patch for tracking only specified threads. I'll send the new patch in this thread later. But, the new one is not so big and hardly depends on "info -t" patch. If you think the new patch and previous one should be in single patch, please tell me. I'll merge them. Thanks, Hitoshi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |