Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1349537
| From | Stephane Eranian <eranian@google.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 0/3] perf/x86/pebs: various important fixes for PEBS |
| Date | 2016-03-03 21:00 +0100 |
| Message-ID | <r8HzH-3qB-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
This short patch series fixes several issues related to PEBS on Haswell and later processors. - The HT corruption bug (HSD29) is fixed on Broadwell, there is no need to mark events 0xd0-0xd3 as exclusive. This was fixed for non-PEBS mode but not for PEBS mode. - On Haswell and later, there is a bug with the GLOBAL_OVF_STATUS bits reporting counter overflows for PEBS events. SDM says it should not but I ran into cases where bits 0-3 were set, causing double processing of the samples and samples missing the EXACT tag. See changelog Tested on Haswell, Broadwell, SkyLake Patch relative to tip.git Stephane Eranian (3): perf/x86/intel: add definition for PT PMI bit perf/x86/pebs: add workaround for broken OVFL status on HSW perf/x86/pebs: add proper PEBS constraints for Broadwell arch/x86/events/intel/core.c | 12 +++++++++++- arch/x86/events/intel/ds.c | 24 ++++++++++++++++++++++++ arch/x86/include/asm/perf_event.h | 1 + 3 files changed, 36 insertions(+), 1 deletion(-) -- 2.5.0
Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread
[PATCH 0/3] perf/x86/pebs: various important fixes for PEBS Stephane Eranian <eranian@google.com> - 2016-03-03 21:00 +0100
[PATCH 1/3] perf/x86/intel: add definition for PT PMI bit Stephane Eranian <eranian@google.com> - 2016-03-03 21:00 +0100
[tip:perf/core] perf/x86/intel: Add definition for PT PMI bit tip-bot for Stephane Eranian <tipbot@zytor.com> - 2016-03-08 14:20 +0100
csiph-web