diff mbox series

[v3,bpf-next] scripts/pahole-flags.sh: Parse DWARF and generate BTF with multithreading.

Message ID 20220217175427.649713-1-kuifeng@fb.com (mailing list archive)
State Accepted
Commit b4f72786429cc57383ff41e02407726313ca178d
Delegated to: BPF
Headers show
Series [v3,bpf-next] scripts/pahole-flags.sh: Parse DWARF and generate BTF with multithreading. | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for bpf-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Single patches do not need cover letters
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 5 maintainers not CCed: kpsingh@kernel.org john.fastabend@gmail.com kafai@fb.com songliubraving@fb.com netdev@vger.kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
bpf/vmtest-bpf-next-PR success PR summary
bpf/vmtest-bpf-next success VM_Test

Commit Message

Kui-Feng Lee Feb. 17, 2022, 5:54 p.m. UTC 
Pass a "-j" argument to pahole if possible to reduce the time of
generating BTF info.

Since v1.22, pahole can parse DWARF and generate BTF with
multithreading to speed up the conversion.  It will reduce the overall
build time of the kernel for seconds.

v3 fixes whitespaces and improves the commit description.
v2 checks the version of pahole to enable multithreading only if possible.

[v2] https://lore.kernel.org/bpf/20220216193431.2691015-1-kuifeng@fb.com/
[v1] https://lore.kernel.org/bpf/20220216004616.2079689-1-kuifeng@fb.com/

Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
---
 scripts/pahole-flags.sh | 3 +++
 1 file changed, 3 insertions(+)

Comments

patchwork-bot+netdevbpf@kernel.org Feb. 22, 2022, 11:20 p.m. UTC | #1 
Hello:

This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@kernel.org>:

On Thu, 17 Feb 2022 09:54:27 -0800 you wrote:
> Pass a "-j" argument to pahole if possible to reduce the time of
> generating BTF info.
> 
> Since v1.22, pahole can parse DWARF and generate BTF with
> multithreading to speed up the conversion.  It will reduce the overall
> build time of the kernel for seconds.
> 
> [...]

Here is the summary with links:
  - [v3,bpf-next] scripts/pahole-flags.sh: Parse DWARF and generate BTF with multithreading.
    https://git.kernel.org/bpf/bpf-next/c/b4f72786429c

You are awesome, thank you!
diff mbox series

Patch

diff --git a/scripts/pahole-flags.sh b/scripts/pahole-flags.sh
index c293941612e7..0d99ef17e4a5 100755
--- a/scripts/pahole-flags.sh
+++ b/scripts/pahole-flags.sh
@@ -16,5 +16,8 @@  fi
 if [ "${pahole_ver}" -ge "121" ]; then
 	extra_paholeopt="${extra_paholeopt} --btf_gen_floats"
 fi
+if [ "${pahole_ver}" -ge "122" ]; then
+	extra_paholeopt="${extra_paholeopt} -j"
+fi
 
 echo ${extra_paholeopt}