* Peter Zijlstra <peterz@xxxxxxxxxxxxx> [2012-01-06 11:57:41]: > On Fri, 2012-01-06 at 11:44 +0530, Srikar Dronamraju wrote: > > - consumers for the uprobe is NULL, so mmap_uprobe will not > > insert new breakpoints which correspond to this uprobe until > > or unless another consumer gets added for the same probe. > > > > - If a new consumer gets added for this probe, we reuse the > > uprobe struct. > > Ok, and when we install a new 'first' consumer we'll again try and > install all breakpoints ignoring those that were already there? > Yes, We install breakpoints as if its the first time a probe has been requested to be installed, including setting the UPROBES_RUN_HANDLER flag. We do check if existing breakpoints are around during the actual insertion, in which case install_breakpoint() will return -EEXIST. However register assumes EEXIST to be non-fatal, and continues as if its successful. -- Thanks and Regards Srikar -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>