Re: [PATCH v4 00/18] Mutex wrapper, locking and memory leak fixes

[Arnaldo Carvalho de Melo]

Em Sat, Aug 27, 2022 at 10:04:44AM +0300, Adrian Hunter escreveu:
> On 26/08/22 19:40, Ian Rogers wrote:
> > 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
> 
> For all patches except 9 and 16
> 
> Reviewed-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>

Added it, did the usual round of tests and pushed out perf/core, we can
continue from there.

It also contains Adrian's "multiple recording time ranges" series.

Thanks!

- Arnaldo