llvm-project.git/lldb/source/Plugins/Process/Linux/Perf.cpp, branch main

[lldb][AIX] get host info for AIX (#134354)

2025-04-29T05:53:03+00:00

This PR is in reference to porting LLDB on AIX.

Link to discussions on llvm discourse and github:

1. https://discourse.llvm.org/t/port-lldb-to-ibm-aix/80640
2. https://github.com/llvm/llvm-project/issues/101657
The complete changes for porting are present in this draft PR:
https://github.com/llvm/llvm-project/pull/102601

- Added changes to make the common host support functions under
`Host/posix` for unix-like system.
Also, created the `unittests/Host/posix/` to test the hostInfo & support
functions for unix-like system.
- Added changes to get the host information for AIX. (GetProcessInfo()) 
(Information like : executable path, arch, process status etc.)

[lldb] Fix duplicate word typos; NFC

2023-09-02T04:32:24+00:00

Those fixes were taken from https://reviews.llvm.org/D137338

[trace] Migrate uses of operator<<(raw_ostream &OS, const Optional &O) to std::optional

2022-12-16T19:30:47+00:00

[lldb] Use std::nullopt instead of None (NFC)

2022-12-05T00:51:25+00:00

This patch mechanically replaces None with std::nullopt where the
compiler would warn if None were deprecated.  The intent is to reduce
the amount of manual work required in migrating from Optional to
std::optional.

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

Fix LLDB build on old Linux kernels (pre-4.1)

2022-10-05T08:00:05+00:00

These fields are guarded elsewhere, but were missing here.

Reviewed By: wallace

Differential Revision: https://reviews.llvm.org/D133778

[NFC][lldb][trace] Fix formatting of tracing files

2022-08-11T18:00:26+00:00

Pavel Labath taught me that clang-format sorts headers automatically
using llvm's rules, and it's better not to have spaces between

So in this diff I'm removing those spaces and formatting them as well.

I used `clang-format -i` to format these files.

[lldb] Fix build on older Linux kernel versions

2022-06-28T12:23:33+00:00

PERF_COUNT_SW_DUMMY is introduced in Linux 3.12.

Differential Revision: https://reviews.llvm.org/D128707

[lldb] Use value_or instead of getValueOr (NFC)

2022-06-19T16:12:01+00:00

[trace][intelpt] Support system-wide tracing [22] - Some final touches

2022-06-16T18:42:22+00:00

Having a member variable TraceIntelPT * makes it look as if it was
optional. I'm using instead a weak_ptr to indicate that it's not
optional and the object is under the ownership of TraceIntelPT.

Besides that, I've simplified the Perf aux and data buffers copying by
using vector.insert.

I'm also renaming Lookup2 to Lookup. The 2 in the name is confusing.

Differential Revision: https://reviews.llvm.org/D127881

[trace][intelpt] Support system-wide tracing [21] - Support long numbers in JSON

2022-06-16T18:42:22+00:00

llvm's JSON parser supports 64 bit integers, but other tools like the
ones written in JS don't support numbers that big, so we need to
represent these possibly big numbers as a string. This diff uses that to
represent addresses and tsc zero. The former is printed in hex for and
the latter in decimal string form. The schema was updated mentioning
that.

Besides that, I fixed some remaining issues and now all test pass. Before I wasn't running all tests because for some reason my computer reverted perf_paranoid to 1.

Differential Revision: https://reviews.llvm.org/D127819