When fixing a locking race and memory leak in: https://lore.kernel.org/linux-perf-users/20211118193714.2293728-1-irogers@xxxxxxxxxx/ It was requested that debug mutex code be separated out into its own files. This was, in part, done by Pavithra Gurushankar in: https://lore.kernel.org/lkml/20220727111954.105118-1-gpavithrasha@xxxxxxxxx/ These patches fix issues with the previous patches, add in the original dso->nsinfo fix and then build on our mutex wrapper with clang's -Wthread-safety analysis. The analysis found missing unlocks in builtin-sched.c which are fixed and -Wthread-safety is enabled by default when building with clang. v4. Adds a comment for the trylock result, fixes the new line (missed in v3) and removes two blank lines as suggested by Adrian Hunter. v3. Adds a missing new line to the error messages and removes the pshared argument to mutex_init by having two functions, mutex_init and mutex_init_pshared. These changes were suggested by Adrian Hunter. v2. Breaks apart changes that s/pthread_mutex/mutex/g and the lock annotations as requested by Arnaldo and Namhyung. A boolean is added to builtin-sched.c to terminate thread funcs rather than leaving them blocked on delted mutexes. Ian Rogers (17): perf bench: Update use of pthread mutex/cond perf tests: Avoid pthread.h inclusion perf hist: Update use of pthread mutex perf bpf: Remove unused pthread.h include perf lock: Remove unused pthread.h include perf record: Update use of pthread mutex perf sched: Update use of pthread mutex perf ui: Update use of pthread mutex perf mmap: Remove unnecessary pthread.h include perf dso: Update use of pthread mutex perf annotate: Update use of pthread mutex perf top: Update use of pthread mutex perf dso: Hold lock when accessing nsinfo perf mutex: Add thread safety annotations perf sched: Fixes for thread safety analysis perf top: Fixes for thread safety analysis perf build: Enable -Wthread-safety with clang Pavithra Gurushankar (1): perf mutex: Wrapped usage of mutex and cond tools/perf/Makefile.config | 5 + tools/perf/bench/epoll-ctl.c | 33 +++--- tools/perf/bench/epoll-wait.c | 33 +++--- tools/perf/bench/futex-hash.c | 33 +++--- tools/perf/bench/futex-lock-pi.c | 33 +++--- tools/perf/bench/futex-requeue.c | 33 +++--- tools/perf/bench/futex-wake-parallel.c | 33 +++--- tools/perf/bench/futex-wake.c | 33 +++--- tools/perf/bench/numa.c | 93 ++++++---------- tools/perf/builtin-inject.c | 4 + tools/perf/builtin-lock.c | 1 - tools/perf/builtin-record.c | 13 ++- tools/perf/builtin-sched.c | 105 +++++++++--------- tools/perf/builtin-top.c | 45 ++++---- tools/perf/tests/mmap-basic.c | 2 - tools/perf/tests/openat-syscall-all-cpus.c | 2 +- tools/perf/tests/perf-record.c | 2 - tools/perf/ui/browser.c | 20 ++-- tools/perf/ui/browsers/annotate.c | 12 +-- tools/perf/ui/setup.c | 5 +- tools/perf/ui/tui/helpline.c | 5 +- tools/perf/ui/tui/progress.c | 8 +- tools/perf/ui/tui/setup.c | 8 +- tools/perf/ui/tui/util.c | 18 ++-- tools/perf/ui/ui.h | 4 +- tools/perf/util/Build | 1 + tools/perf/util/annotate.c | 15 +-- tools/perf/util/annotate.h | 4 +- tools/perf/util/bpf-event.h | 1 - tools/perf/util/build-id.c | 12 ++- tools/perf/util/dso.c | 19 ++-- tools/perf/util/dso.h | 4 +- tools/perf/util/hist.c | 6 +- tools/perf/util/hist.h | 4 +- tools/perf/util/map.c | 3 + tools/perf/util/mmap.h | 1 - tools/perf/util/mutex.c | 119 +++++++++++++++++++++ tools/perf/util/mutex.h | 108 +++++++++++++++++++ tools/perf/util/probe-event.c | 3 + tools/perf/util/symbol.c | 4 +- tools/perf/util/top.h | 5 +- 41 files changed, 569 insertions(+), 323 deletions(-) create mode 100644 tools/perf/util/mutex.c create mode 100644 tools/perf/util/mutex.h -- 2.37.2.672.g94769d06f0-goog
