From: Andi Kleen <andi@firstfloor.org>
To: mingo@kernel.org
Cc: peterz@infradead.org, acme@infradead.org,
linux-kernel@vger.kernel.org, eranian@google.com
Subject: perf, x86: Add last TSX PMU code for Haswell
Date: Fri, 13 Sep 2013 11:08:30 -0700 [thread overview]
Message-ID: <1379095716-4705-1-git-send-email-andi@firstfloor.org> (raw)
[This has kernel and user parts, so will need
review/ack/merges from both perf kernel and user land maintainers]
This is currently the last part of the TSX PMU code,
just adding the left over bits:
This adds some changes to the user interfaces.
I'll send patches for the manpage separately.
- Report the transaction abort flags to user space
using a new field, and add the code to display them.
This is used to classify abort types, also fairly
important for tuning as it guides the tuning process,
together with the abort weight that was added earleir.
[3 patches, generic, x86, user tools]
- Add support for reporting the two new TSX LBR flags: in_tx
and abort_tx. The code to handle the LBRs was already
added earlier, this just adds the code to report,
filter and display them.
- Add a workaround for a Haswell issue that it reports
an extra LBR record for every abort. We just filter
those out in the kernel.
Open perf TSX issues left:
- Revisit automatic enabling of precise for tx/el-abort
- Need to fix the sort handling in the user tools
to actually sort on other fields
- The aggregated LBR display in the user tools is not
very useful for transactions, need a way to report them
in a histogram like backtraces.
- May want some short cut options for
record --transaction --weight / report --sort symbol,transaction,weight
-Andi
next reply other threads:[~2013-09-13 18:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-13 18:08 Andi Kleen [this message]
2013-09-13 18:08 ` [PATCH 1/6] perf, core: Add generic transaction flags v4 Andi Kleen
2013-09-16 10:58 ` Peter Zijlstra
2013-09-16 11:04 ` Peter Zijlstra
2013-09-13 18:08 ` [PATCH 2/6] perf, x86: Add Haswell specific transaction flag reporting v4 Andi Kleen
2013-09-16 11:08 ` Peter Zijlstra
2013-09-16 11:21 ` Peter Zijlstra
2013-09-13 18:08 ` [PATCH 3/6] perf, tools: Support sorting by in_tx, abort branch flags v3 Andi Kleen
2013-09-13 18:08 ` [PATCH 4/6] perf, tools: Add abort_tx,no_tx,in_tx branch filter options to perf record -j v3 Andi Kleen
2013-09-13 18:08 ` [PATCH 5/6] perf, tools: Add support for record transaction flags v4 Andi Kleen
2013-09-13 18:08 ` [PATCH 6/6] perf, x86: Suppress duplicated abort LBR records Andi Kleen
2013-09-16 11:28 ` Peter Zijlstra
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