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Subject[PATCH v5 0/6] coresight: syscfg: Extend configfs for config load
Date
This set extends the configfs support to allow loading and unloading of
configurations as binary files via configfs.

Additional attributes - load and unload are provided to in the
/config/cs-syscfg subsytem base group to implement the load functionality.

Routines to generate binary configuration files are supplied in
./tools/coresight.

Example generator and reader applications are provided.

Tools may be cross compiled or built for use on host system.

Documentation is updated to describe feature usage.

Changes since v4:
1) Update coresight/next - 6.1-rc3
2) Update to lockdep fixes to avoid read lock race in configfs.

Changes since v3:
1) Rebase & tested on coresight/next - 5.19-rc3 - which includes the
fix patch for earlier configfs works.
2) Lockdep investigations resulted in re-design of some of the code
accessing configfs.
3) moved load and unload attributes to root of cs-syscfg. (Mathieu)
4) Additional minor fixes suggested by Mathieu.
5) Memory for configfs loaded and unloaded configurations is now
explicitly freed.
6) LOCKDEP nesting fix for configfs base code (fs/configfs/dir.c)

Changes since v2:
1) Rebased & tested on coresight/next - 5.18-rc2
2) Moved coresight config generator and reader programs from samples to
tools/coresight. Docs updated to match. (suggested by Mathieu)
3) userspace builds now use userspace headers from tools/...
4) Other minor fixes from Mathieu's review.

Changes since v1:
1) Rebased to coresight/next - 5.16-rc1 with previous coresight config
set applied.
2) Makefile.host fixed to default to all target.

Mike Leach (6):
coresight: configfs: Update memory allocation / free for configfs
elements
coresight: configfs: Add in functionality for load via configfs
coresight: configfs: Add in binary attributes to load files
coresight: configfs: Modify config files to allow userspace use
coresight: tools: Add config file write and reader tools
Documentation: coresight: docs for config load via configfs

.../trace/coresight/coresight-config.rst | 202 +++++-
MAINTAINERS | 1 +
drivers/hwtracing/coresight/Makefile | 2 +-
.../coresight/coresight-config-file.c | 583 ++++++++++++++++++
.../coresight/coresight-config-file.h | 139 +++++
.../hwtracing/coresight/coresight-config.h | 27 +
.../coresight/coresight-syscfg-configfs.c | 361 +++++++++--
.../coresight/coresight-syscfg-configfs.h | 4 +
.../hwtracing/coresight/coresight-syscfg.c | 137 +++-
.../hwtracing/coresight/coresight-syscfg.h | 6 +-
tools/coresight/Makefile | 52 ++
tools/coresight/coresight-cfg-bufw.c | 309 ++++++++++
tools/coresight/coresight-cfg-bufw.h | 26 +
tools/coresight/coresight-cfg-example1.c | 62 ++
tools/coresight/coresight-cfg-example2.c | 95 +++
tools/coresight/coresight-cfg-examples.h | 22 +
tools/coresight/coresight-cfg-file-gen.c | 61 ++
tools/coresight/coresight-cfg-file-read.c | 227 +++++++
tools/coresight/coresight-config-uapi.h | 76 +++
19 files changed, 2339 insertions(+), 53 deletions(-)
create mode 100644 drivers/hwtracing/coresight/coresight-config-file.c
create mode 100644 drivers/hwtracing/coresight/coresight-config-file.h
create mode 100644 tools/coresight/Makefile
create mode 100644 tools/coresight/coresight-cfg-bufw.c
create mode 100644 tools/coresight/coresight-cfg-bufw.h
create mode 100644 tools/coresight/coresight-cfg-example1.c
create mode 100644 tools/coresight/coresight-cfg-example2.c
create mode 100644 tools/coresight/coresight-cfg-examples.h
create mode 100644 tools/coresight/coresight-cfg-file-gen.c
create mode 100644 tools/coresight/coresight-cfg-file-read.c
create mode 100644 tools/coresight/coresight-config-uapi.h

--
2.17.1

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