02 Nov, 2017
1 commit
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Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.By default all files without license information are under the default
license of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
02 Mar, 2017
1 commit
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We are going to split out of , which
will have to be picked up from other headers and a couple of .c files.Create a trivial placeholder file that just
maps to to make this patch obviously correct and
bisectable.Include the new header in the files that are going to need it.
Acked-by: Linus Torvalds
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar
09 Jan, 2015
1 commit
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On x86_64, at least, task_pt_regs may be only partially initialized
in many contexts, so x86_64 should not use it without extra care
from interrupt context, let alone NMI context.This will allow x86_64 to override the logic and will supply some
scratch space to use to make a cleaner copy of user regs.Tested-by: Jiri Olsa
Signed-off-by: Andy Lutomirski
Signed-off-by: Peter Zijlstra (Intel)
Cc: Stephane Eranian
Cc: chenggang.qcg@taobao.com
Cc: Wu Fengguang
Cc: Namhyung Kim
Cc: Mike Galbraith
Cc: Arjan van de Ven
Cc: David Ahern
Cc: Arnaldo Carvalho de Melo
Cc: Catalin Marinas
Cc: Jean Pihet
Cc: Linus Torvalds
Cc: Mark Salter
Cc: Russell King
Cc: Will Deacon
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/e431cd4c18c2e1c44c774f10758527fb2d1025c4.1420396372.git.luto@amacapital.net
Signed-off-by: Ingo Molnar
10 Aug, 2012
2 commits
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Introducing PERF_SAMPLE_REGS_USER sample type bit to trigger the dump of
user level registers on sample. Registers we want to dump are specified
by sample_regs_user bitmask.Only user level registers are dumped at the moment. Meaning the register
values of the user space context as it was before the user entered the
kernel for whatever reason (syscall, irq, exception, or a PMI happening
in userspace).The layout of the sample_regs_user bitmap is described in
asm/perf_regs.h for archs that support register dump.This is going to be useful to bring Dwarf CFI based stack unwinding on
top of samples.Original-patch-by: Frederic Weisbecker
[ Dump registers ABI specification. ]
Signed-off-by: Jiri Olsa
Suggested-by: Stephane Eranian
Cc: "Frank Ch. Eigler"
Cc: Arun Sharma
Cc: Benjamin Redelings
Cc: Corey Ashford
Cc: Cyrill Gorcunov
Cc: Frank Ch. Eigler
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Robert Richter
Cc: Stephane Eranian
Cc: Tom Zanussi
Cc: Ulrich Drepper
Link: http://lkml.kernel.org/r/1344345647-11536-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
This brings a new API to help the selective dump of registers on event
sampling, and its implementation for x86 arch.Added HAVE_PERF_REGS config option to determine if the architecture
provides perf registers ABI.The information about desired registers will be passed in u64 mask.
It's up to the architecture to map the registers into the mask bits.For the x86 arch implementation, both 32 and 64 bit registers bits are
defined within single enum to ensure 64 bit system can provide register
dump for compat task if needed in the future.Original-patch-by: Frederic Weisbecker
[ Added missing linux/errno.h include ]
Signed-off-by: Jiri Olsa
Cc: "Frank Ch. Eigler"
Cc: Arun Sharma
Cc: Benjamin Redelings
Cc: Corey Ashford
Cc: Cyrill Gorcunov
Cc: Frank Ch. Eigler
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Robert Richter
Cc: Stephane Eranian
Cc: Tom Zanussi
Cc: Ulrich Drepper
Link: http://lkml.kernel.org/r/1344345647-11536-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo
