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Mike Leach 42b2b570b3 perf cs-etm: Update ETM metadata format
The current fixed metadata version format (version 0), means that adding
metadata parameter items renders files from a previous version of perf
unreadable. Per CPU parameters appear in a fixed order, but there is no
field to indicate the number of ETM parameters per CPU.

This patch updates the per CPU parameter blocks to include a NR_PARAMs
value which indicates the number of parameters in the block.

The header version is incremented to 1. Fixed ordering is retained,
new ETM parameters are added to the end of the list.

The reader code is updated to be able to read current version 0 files,
For version 1, the reader will read the number of parameters in the
per CPU block. This allows the reader to process older or newer files
that may have different numbers of parameters than in use at the
time perf was built.

Signed-off-by: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Link: https://lore.kernel.org/r/20210202214040.32349-1-mike.leach@linaro.org
Link: https://lore.kernel.org/r/20210224164835.3497311-2-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-03-02 09:46:28 -03:00
arch powerpc updates for 5.12 2021-02-22 14:34:00 -08:00
block for-5.12/block-ipi-2021-02-21 2021-02-22 10:53:05 -08:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-02-21 17:23:56 -08:00
Documentation This is the bulk of pin control changes for the v5.12 kernel. 2021-02-22 18:39:11 -08:00
drivers This is the bulk of pin control changes for the v5.12 kernel. 2021-02-22 18:39:11 -08:00
fs Fixes around VM_FPNMAP and follow_pfn 2021-02-22 17:45:02 -08:00
include This is the bulk of pin control changes for the v5.12 kernel. 2021-02-22 18:39:11 -08:00
init kconfig for kcmp syscall 2021-02-22 17:15:30 -08:00
ipc Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
kernel Fixes around VM_FPNMAP and follow_pfn 2021-02-22 17:45:02 -08:00
lib \n 2021-02-22 13:25:37 -08:00
LICENSES LICENSES: Add the CC-BY-4.0 license 2020-12-08 10:33:27 -07:00
mm Fixes around VM_FPNMAP and follow_pfn 2021-02-22 17:45:02 -08:00
net Optimization: 2021-02-22 13:29:55 -08:00
samples It has been a relatively quiet cycle in docsland. 2021-02-22 10:57:46 -08:00
scripts It has been a relatively quiet cycle in docsland. 2021-02-22 10:57:46 -08:00
security Merge branch 'userns-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-02-22 17:13:33 -08:00
sound ARM updates for 5.12-rc1: 2021-02-22 14:27:07 -08:00
tools perf cs-etm: Update ETM metadata format 2021-03-02 09:46:28 -03:00
usr arch: ia64: Remove rest of perfmon support 2021-01-22 12:12:20 +05:30
virt KVM/arm64 fixes for 5.11, take #2 2021-02-12 14:07:39 +00:00
.clang-format clang-format: Update with the latest for_each macro list 2021-01-29 15:00:23 +01:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: Add support to build overlays (%.dtbo) 2021-02-04 09:00:04 -06:00
.mailmap Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-02-21 17:23:56 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: dccp: move Gerrit Renker to CREDITS 2021-01-14 10:53:49 -08:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS IOMMU Updates for Linux v5.12 2021-02-22 10:31:29 -08:00
Makefile Devicetree updates for v5.12: 2021-02-22 10:05:12 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.