On Wed, Nov 06, 2013 at 11:41:33AM -0700, David Ahern wrote:
> I know Jiri is working on cleanups of the output file, but had this
> sitting around for a couple of weeks now. Might as well push it out
> for the next baseline. The cleanups of perf-record can be taken
> independently.
>
> Ingo: I took a look at leveraging the copy_user_nocache and was not able
> to get it to work. I won't have time to come back to it for a while.
> Given that the mmap output already improves perf-trace a lot I would
> like to get the option into 3.13 and come back to the optimization
> later.
>
> David Ahern (4):
> perf record: Refactor feature handling into a separate function
> perf record: Remove advance_output function
> perf record: Remove post_processing_offset variable
> perf record: mmap output file - v3
>
> tools/perf/Documentation/perf-record.txt | 5 ++
> tools/perf/builtin-record.c | 137
> ++++++++++++++++++++++++++-----
> 2 files changed, 123 insertions(+), 19 deletions(-)
>
hi,
got this on F19:
CC builtin-record.o
builtin-record.c: In function ‘do_mmap_output’:
builtin-record.c:118:13: error: ignoring return value of ‘ftruncate’, declared
with attribute warn_unused_result [-Werror=unused-result]
ftruncate(file->fd, offset);
^
cc1: all warnings being treated as errors
jirka
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
