From: suzuki.poulose@arm.com (Suzuki K Poulose)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/6] coresight: perf: Support for tmc-etr backed buffers
Date: Wed, 11 Jul 2018 15:16:33 +0100 [thread overview]
Message-ID: <1531318599-8840-1-git-send-email-suzuki.poulose@arm.com> (raw)
This series adds the support for using the tmc-etr in perf mode for
storing the trace to system RAM. The ETR uses a separate buffer (double
buffering) for storing the trace. This is copied back to the ring buffer
when the event is stopped. We try to match the ETR buffer to the larger
of perf ring buffer or the size configured for the ETR via sysfs. This
allows tuning the buffer size to prevent overflows and loosing trace
data, as we don't have overflow interrupt support (yet).
Applies on coresight/next
Changes since [0] :
- Drop buffer rotation logic for etr-buf
- Do not use perf ring buffer. (Add support later)
- Fix handling of sink, preventing mixed modes of operation.
[0] - TMC ETR perf support
- http://lists.infradead.org/pipermail/linux-arm-kernel/2018-May/574875.html
Suzuki K Poulose (6):
coresight: Fix handling of sinks
coresight: tmc-etr: Handle driver mode specific ETR buffers
coresight: tmc-etr: Relax collection of trace from sysfs mode
coresight: Convert driver messages to dev_dbg
coresight: perf: Remove reset_buffer call back for sinks
coresight: etm-perf: Add support for ETR backend
.../coresight/coresight-dynamic-replicator.c | 4 +-
drivers/hwtracing/coresight/coresight-etb10.c | 62 +---
drivers/hwtracing/coresight/coresight-etm-perf.c | 9 +-
drivers/hwtracing/coresight/coresight-etm3x.c | 4 +-
drivers/hwtracing/coresight/coresight-etm4x.c | 4 +-
drivers/hwtracing/coresight/coresight-funnel.c | 4 +-
drivers/hwtracing/coresight/coresight-replicator.c | 4 +-
drivers/hwtracing/coresight/coresight-stm.c | 4 +-
drivers/hwtracing/coresight/coresight-tmc-etf.c | 66 +---
drivers/hwtracing/coresight/coresight-tmc-etr.c | 337 +++++++++++++++++++--
drivers/hwtracing/coresight/coresight-tmc.c | 4 +-
drivers/hwtracing/coresight/coresight-tmc.h | 4 +
drivers/hwtracing/coresight/coresight-tpiu.c | 4 +-
drivers/hwtracing/coresight/coresight.c | 22 +-
include/linux/coresight.h | 5 +-
15 files changed, 375 insertions(+), 162 deletions(-)
--
2.7.4
next reply other threads:[~2018-07-11 14:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-11 14:16 Suzuki K Poulose [this message]
2018-07-11 14:16 ` [PATCH 1/6] coresight: Fix handling of sinks Suzuki K Poulose
2018-07-11 14:16 ` [PATCH 2/6] coresight: tmc-etr: Handle driver mode specific ETR buffers Suzuki K Poulose
2018-07-11 14:16 ` [PATCH 3/6] coresight: tmc-etr: Relax collection of trace from sysfs mode Suzuki K Poulose
2018-07-11 14:16 ` [PATCH 4/6] coresight: Convert driver messages to dev_dbg Suzuki K Poulose
2018-07-11 14:16 ` [PATCH 5/6] coresight: perf: Remove reset_buffer call back for sinks Suzuki K Poulose
2018-07-11 14:16 ` [PATCH 6/6] coresight: etm-perf: Add support for ETR backend Suzuki K Poulose
2018-07-12 20:57 ` Mathieu Poirier
2018-07-13 11:23 ` Suzuki K Poulose
2018-07-16 15:05 ` Mathieu Poirier
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