Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1248755

[PATCH 0/1] perf/x86: Fix time_shift in perf_event_mmap_page

Show all headers | View raw

Hi

There is a problem with my patch:
commit b20112edeadf ("perf/x86: Improve accuracy of perf/sched clock")
which is in tip at the moment.

The problem is that userspace does not expect time_shift in perf_event_mmap_page
to be as much as 32.  Here is a proposed fix.


Adrian Hunter (1):
      perf/x86: Fix time_shift in perf_event_mmap_page

 arch/x86/kernel/tsc.c           | 11 +++++++++++
 include/uapi/linux/perf_event.h |  4 ++--
 2 files changed, 13 insertions(+), 2 deletions(-)


Regards
Adrian
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH 0/1] perf/x86: Fix time_shift in perf_event_mmap_page Adrian Hunter <adrian.hunter@intel.com> - 2015-10-16 15:30 +0200
  [PATCH 1/1] perf/x86: Fix time_shift in perf_event_mmap_page Adrian Hunter <adrian.hunter@intel.com> - 2015-10-16 15:30 +0200

csiph-web