From a15eea5077506111e4167a2361da0306d23543f3 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Thu, 6 May 2021 15:01:05 +0100 Subject: bitbake: runqueue: Improve multiconfig deferred task issues The previous patches have exposed new issues with this code path, the issues being around what should happen when the hash of a task changes and the task is or is not on the deferred task list. Rather than rebuilding the deferred task list during each rehash event, build it once at the start of a build. This avoids the problem of tasks being added back after they have run and also avoids problems of always ensuring the same task is deferred. It also allows the 'outrightfail' codepath to be handled separately as the conditions are subtly differnt. One significant win for the new approch is the build is not continually printing out lists of deferred tasks, that list remains fairly static from the start of the build. Logic is added in to ensure a rehashed task with a hash matching other deferred tasks is deferred along with them as a small optimization. An interesting test case for this code was reported by Mark Hatle with four multiconfigs, each the same apart from TMPDIR and running a build of: bitbake buildtools-tarball mc:{one,two,three,four}:core-image-minimal which is interesting in that the build of buildtools partially overlaps core-image-minimal and the build has a rehash event for qemuwrapper-cross even without any external hash equivalence server or preexisting data. (Bitbake rev: bb424e0a6d274d398f434f7df63951da9ce305b3) Signed-off-by: Richard Purdie --- bitbake/lib/bb/runqueue.py | 58 +++++++++++++++++++++++++--------------------- 1 file changed, 32 insertions(+), 26 deletions(-) (limited to 'bitbake/lib/bb/runqueue.py') diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py index 6c41fe6d43..25e012125c 100644 --- a/bitbake/lib/bb/runqueue.py +++ b/bitbake/lib/bb/runqueue.py @@ -2443,6 +2443,11 @@ class RunQueueExecute: if update_tasks: self.sqdone = False + for tid in [t[0] for t in update_tasks]: + h = pending_hash_index(tid, self.rqdata) + if h in self.sqdata.hashes and tid != self.sqdata.hashes[h]: + self.sq_deferred[tid] = self.sqdata.hashes[h] + bb.note("Deferring %s after %s" % (tid, self.sqdata.hashes[h])) update_scenequeue_data([t[0] for t in update_tasks], self.sqdata, self.rqdata, self.rq, self.cooker, self.stampcache, self, summary=False) for (tid, harddepfail, origvalid) in update_tasks: @@ -2786,6 +2791,19 @@ def build_scenequeue_data(sqdata, rqdata, rq, cooker, stampcache, sqrq): sqdata.stamppresent = set() sqdata.valid = set() + sqdata.hashes = {} + sqrq.sq_deferred = {} + for mc in sorted(sqdata.multiconfigs): + for tid in sorted(sqdata.sq_revdeps): + if mc_from_tid(tid) != mc: + continue + h = pending_hash_index(tid, rqdata) + if h not in sqdata.hashes: + sqdata.hashes[h] = tid + else: + sqrq.sq_deferred[tid] = sqdata.hashes[h] + bb.note("Deferring %s after %s" % (tid, sqdata.hashes[h])) + update_scenequeue_data(sqdata.sq_revdeps, sqdata, rqdata, rq, cooker, stampcache, sqrq, summary=True) # Compute a list of 'stale' sstate tasks where the current hash does not match the one @@ -2850,32 +2868,20 @@ def update_scenequeue_data(tids, sqdata, rqdata, rq, cooker, stampcache, sqrq, s sqdata.valid |= rq.validate_hashes(tocheck, cooker.data, len(sqdata.stamppresent), False, summary=summary) - sqdata.hashes = {} - sqrq.sq_deferred = {} - for mc in sorted(sqdata.multiconfigs): - for tid in sorted(sqdata.sq_revdeps): - if mc_from_tid(tid) != mc: - continue - if tid in sqdata.stamppresent: - continue - if tid in sqdata.valid: - continue - if tid in sqdata.noexec: - continue - if tid in sqrq.scenequeue_notcovered: - continue - if tid in sqrq.scenequeue_covered: - continue - - h = pending_hash_index(tid, rqdata) - if h not in sqdata.hashes: - if tid in tids: - sqdata.outrightfail.add(tid) - sqdata.hashes[h] = tid - else: - sqrq.sq_deferred[tid] = sqdata.hashes[h] - bb.note("Deferring %s after %s" % (tid, sqdata.hashes[h])) - + for tid in tids: + if tid in sqdata.stamppresent: + continue + if tid in sqdata.valid: + continue + if tid in sqdata.noexec: + continue + if tid in sqrq.scenequeue_covered: + continue + if tid in sqrq.scenequeue_notcovered: + continue + if tid in sqrq.sq_deferred: + continue + sqdata.outrightfail.add(tid) class TaskFailure(Exception): """ -- cgit v1.2.3-54-g00ecf