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[ Upstream commit e880a70f8046df0dd9089fa60dcb866a2cc69194 ] When create_perf_stat_counter() failed, it doesn't close workload.cork_fd open in evlist__prepare_workload(). This could make too many open file error while __run_perf_stat() repeats. Introduce evlist__cancel_workload to close workload.cork_fd and wait workload.child_pid until exit to clear child process when create_perf_stat_counter() is failed. Signed-off-by: Levi Yun <yeoreum.yun@arm.com> Reviewed-by: James Clark <james.clark@linaro.org> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: nd@arm.com Cc: howardchu95@gmail.com Link: https://lore.kernel.org/r/20240925132022.2650180-2-yeoreum.yun@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> Stable-dep-of: 7f6ccb70e465 ("perf stat: Fix affinity memory leaks on error path") Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.