[PATCH v2] .gitignore: ignore compile_commands.json globally

[Andrii Nakryiko]

compile_commands.json can be used with clangd to enable language server
protocol-based assistance. For kernel itself this can be built with
scripts/gen_compile_commands.py, but other projects (e.g., libbpf, or
BPF selftests) can benefit from their own compilation database file,
which can be generated successfully using external tools, like bear [0].

So, instead of adding compile_commands.json to .gitignore in respective
individual projects, let's just ignore it globally anywhere in Linux repo.

While at it, remove exactly such a local .gitignore rule under
tools/power/cpupower.

  [0] https://github.com/rizsotto/Bear

Reviewed-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Suggested-by: Eduard Zingerman <eddyz87@xxxxxxxxx>
Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
---
v1->v2:
  - clean up tools/power/cpupower's .gitignore (Miguel Ojeda).

 .gitignore                      | 2 +-
 tools/power/cpupower/.gitignore | 3 ---
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/.gitignore b/.gitignore
index bf5ee6e01cd4..451dff66275d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -175,7 +175,7 @@ x509.genkey
 *.kdev4
 
 # Clang's compilation database file
-/compile_commands.json
+compile_commands.json
 
 # Documentation toolchain
 sphinx_*/
diff --git a/tools/power/cpupower/.gitignore b/tools/power/cpupower/.gitignore
index 5113d5a7aee0..7677329c42a6 100644
--- a/tools/power/cpupower/.gitignore
+++ b/tools/power/cpupower/.gitignore
@@ -27,6 +27,3 @@ debug/i386/intel_gsic
 debug/i386/powernow-k8-decode
 debug/x86_64/centrino-decode
 debug/x86_64/powernow-k8-decode
-
-# Clang's compilation database file
-compile_commands.json
-- 
2.47.1