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Date: Wed, 6 Feb 2013 17:11:23 -0500 From: Sasha Levin <sasha.levin@...cle.com> To: mingo@...nel.org, peterz@...radead.org Cc: jamie.iles@...cle.com, penberg@...nel.org, acme@...stprotocols.net, paulus@...ba.org, linux-kernel@...r.kernel.org, Sasha Levin <sasha.levin@...cle.com> Subject: [PATCH 00/11] lockdep: LD_PRELOAD support This patch series adds in LD_PRELOAD support for liblockdep. We store lockdep_map in an rb-tree and hook the pthread_mutex/ pthread_rwlock calls, allowing us to add lockdep testing on any program without touching it's source code. The first couple of patches remove the need for lockdep_init and lockdep_set_thread, as well as some fixes for several tests. The other patches add rbtree and LD_PRELOAD support, along with testing for that. The last patch adds a small script that wraps all of it, making testing really simple: liblockdep perf [perf command line] There is a case where it won't work well: some programs, such as firefox, hook malloc() and add a pthread_mutex lock in the allocation path, which recurses back into our liblockdep code. To solve that I'm planning to add a local cache to allocate from when liblockdep detects recursion onto itself, but that's outside of the scope of this patch. Instead of taking the perf in this series another option would be to just revert the existing perf patch from me in core/locking, which would mean perf would just work with the new LD_PRELOAD feature. Sasha Levin (11): liblockdep: remove the need for liblockdep_init liblockdep: remove the need for liblockdep_set_thread perf: stop using liblockdep_init and liblockdep_set_thread liblockdep: fix AA test liblockdep: correct the ABCDBCDA test liblockdep: rbtree support liblockdep: prevent multiple declarations of CALLER_ADDR0 liblockdep: keep headers declarations even if lib is disabled liblockdep: support using LD_PRELOAD liblockdep: add tests for the LD_PRELOAD feature liblockdep: preload helper tools/lib/lockdep/Makefile | 16 +- tools/lib/lockdep/common.c | 10 +- tools/lib/lockdep/include/liblockdep/common.h | 5 +- tools/lib/lockdep/include/liblockdep/mutex.h | 4 +- tools/lib/lockdep/include/liblockdep/rwlock.h | 4 +- tools/lib/lockdep/lockdep | 3 + tools/lib/lockdep/preload.c | 184 +++++++++++++++++++++ tools/lib/lockdep/rbtree.c | 1 + tools/lib/lockdep/run_tests.sh | 12 ++ tools/lib/lockdep/tests/AA.c | 5 +- tools/lib/lockdep/tests/ABBA.c | 3 - tools/lib/lockdep/tests/ABBCCA.c | 3 - tools/lib/lockdep/tests/ABBCCDDA.c | 3 - tools/lib/lockdep/tests/ABCABC.c | 3 - tools/lib/lockdep/tests/ABCDBCDA.c | 13 +- tools/lib/lockdep/tests/ABCDBDDA.c | 3 - tools/lib/lockdep/tests/WW.c | 3 - tools/lib/lockdep/tests/unlock_balance.c | 3 - tools/lib/lockdep/uinclude/linux/kernel.h | 2 + tools/lib/lockdep/uinclude/linux/lockdep.h | 5 +- tools/lib/lockdep/uinclude/linux/rbtree.h | 1 + .../lib/lockdep/uinclude/linux/rbtree_augmented.h | 2 + tools/perf/builtin-sched.c | 2 - tools/perf/builtin-top.c | 4 - tools/perf/config/feature-tests.mak | 1 - tools/perf/perf.c | 3 - tools/perf/util/liblockdep.h | 2 - 27 files changed, 236 insertions(+), 64 deletions(-) create mode 100755 tools/lib/lockdep/lockdep create mode 100644 tools/lib/lockdep/preload.c create mode 100644 tools/lib/lockdep/rbtree.c create mode 100644 tools/lib/lockdep/uinclude/linux/rbtree.h create mode 100644 tools/lib/lockdep/uinclude/linux/rbtree_augmented.h -- 1.8.1.2 -- 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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