Hi, Igor!
Thanks for the patch!
LGTM, except for a few nits below.
 
> 
>>Before the patch the all LuaJIT testing jobs were dispatched to the
>Typo: s/the all/, all/
>>runner with the name given via strategy matrix <RUNNER> entry. However,
>Typo: s/via/via the/
>>more convenient way for dispatching is the triplet of the following
>Typo: s/more/a more/
>>labels:
>>* <matrix.ARCH> to specify the host architecture (i.e. x86_64 or ARM64)
>>* <matrix.OS> to specify the OS family name (either Linux or macOS)
>>* 'self-hosted' to make job dispatch only to the runners from Tarantool
>>  ghacts-shared-* pool and never choose GitHub public resources.
>>
>>With the given triplet the proper runner is chosen for the particular
>>testing flavor.
>>
>>Moreover, the new 'lightweight' and 'regular' labels are also used in
>><runs-on> list, since the new "lightweight" runners have been introduced
>>to ghacts-shared-* pool. There are a couple of LuaJIT tests that
>>requires more memory than provided by "lightweight" runners, so only
>Typo: s/requires/require/
>Typo: s/than/than is/
> 
>>"regular" ones need to be chosen for full LuaJIT testing. At the same
>>time there is no need to use "regular" runner for LuaJIT Static analysis
>>workflow, hence 'lightweight' label is added to <runs-on> list in
>>lint.yml workflow file.
>Shall we create the same patch for the gnumake workflow?
>>
>>Signed-off-by: Igor Munkin < imun@tarantool.org >
>>---
>> .github/workflows/gnumake-builds-testing.yml | 20 ++------------------
>> .github/workflows/lint.yml | 2 +-
>> .github/workflows/testing.yml | 20 ++------------------
>> 3 files changed, 5 insertions(+), 37 deletions(-)
>>
>>diff --git a/.github/workflows/gnumake-builds-testing.yml b/.github/workflows/gnumake-builds-testing.yml
>>index ad9d5015..e5f82780 100644
>>--- a/.github/workflows/gnumake-builds-testing.yml
>>+++ b/.github/workflows/gnumake-builds-testing.yml
>>@@ -38,22 +38,6 @@ jobs:
>>         GC64: [ON, OFF]
>>         OS: [Linux, macOS]
>>         include:
>>- - ARCH: ARM64
>>- OS: Linux
>>- NAME: Linux/aarch64
>>- RUNNER: graviton
>>- - ARCH: x86_64
>>- OS: Linux
>>- NAME: Linux/x86_64
>>- RUNNER: ubuntu-20.04-self-hosted
>>- - ARCH: ARM64
>>- OS: macOS
>>- NAME: macOS/M1
>>- RUNNER: macos-11-m1
>>- - ARCH: x86_64
>>- OS: macOS
>>- NAME: macOS/x86_64
>>- RUNNER: macos-11
>>           - BUILDTYPE: Debug
>>             CMAKEFLAGS: -DCMAKE_BUILD_TYPE=Debug -DLUA_USE_ASSERT=ON -DLUA_USE_APICHECK=ON
>>             MAKEBUILDFLAGS: -DLUA_USE_ASSERT -DLUA_USE_APICHECK
>>@@ -70,10 +54,10 @@ jobs:
>>             GC64: OFF
>>           - OS: macOS
>>             GC64: OFF
>>- runs-on: [self-hosted, '${{ matrix.RUNNER }}']
>>+ runs-on: [self-hosted, regular, '${{ matrix.OS }}', '${{ matrix.ARCH }}']
>>     name: >
>>       LuaJIT
>>- (${{ matrix.NAME }})
>>+ (${{ matrix.OS }}/${{ matrix.ARCH }})
>>       ${{ matrix.BUILDTYPE }}
>>       GC64:${{ matrix.GC64 }}
>>     steps:
>>diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
>>index e565144c..02150922 100644
>>--- a/.github/workflows/lint.yml
>>+++ b/.github/workflows/lint.yml
>>@@ -30,7 +30,7 @@ concurrency:
>> 
>> jobs:
>>   test-luacheck:
>>- runs-on: ubuntu-20.04-self-hosted
>>+ runs-on: [self-hosted, lightweight, Linux, x86_64]
>>     name: luacheck
>>     steps:
>>       - uses: actions/checkout@v2.3.4
>>diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
>>index 958f8e27..5558e3ea 100644
>>--- a/.github/workflows/testing.yml
>>+++ b/.github/workflows/testing.yml
>>@@ -38,22 +38,6 @@ jobs:
>>         GC64: [ON, OFF]
>>         OS: [Linux, macOS]
>>         include:
>>- - ARCH: ARM64
>>- OS: Linux
>>- NAME: Linux/aarch64
>>- RUNNER: graviton
>>- - ARCH: x86_64
>>- OS: Linux
>>- NAME: Linux/x86_64
>>- RUNNER: ubuntu-20.04-self-hosted
>>- - ARCH: ARM64
>>- OS: macOS
>>- NAME: macOS/M1
>>- RUNNER: macos-11-m1
>>- - ARCH: x86_64
>>- OS: macOS
>>- NAME: macOS/x86_64
>>- RUNNER: macos-11
>>           - BUILDTYPE: Debug
>>             CMAKEFLAGS: -DCMAKE_BUILD_TYPE=Debug -DLUA_USE_ASSERT=ON -DLUA_USE_APICHECK=ON
>>           - BUILDTYPE: Release
>>@@ -63,10 +47,10 @@ jobs:
>>             GC64: OFF
>>           - OS: macOS
>>             GC64: OFF
>>- runs-on: [self-hosted, '${{ matrix.RUNNER }}']
>>+ runs-on: [self-hosted, regular, '${{ matrix.OS }}', '${{ matrix.ARCH }}']
>>     name: >
>>       LuaJIT
>>- (${{ matrix.NAME }})
>>+ (${{ matrix.OS }}/${{ matrix.ARCH }})
>>       ${{ matrix.BUILDTYPE }}
>>       GC64:${{ matrix.GC64 }}
>>     steps:
>>--
>>2.34.0
>--
>Best regards,
>Maxim Kokryashkin
>