On Wed, May 26, 2021 at 10:33:42AM +0200, Michal Such?nek wrote:

quoted

 lib/Kconfig.debug |  3 +++
 mm/page_alloc.c   | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 678c13967580..f88a155b80a9 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug

@@ -313,6 +313,9 @@ config DEBUG_INFO_BTF
 config PAHOLE_HAS_SPLIT_BTF
 	def_bool $(success, test `$(PAHOLE) --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/'` -ge "119")
 
+config PAHOLE_HAS_ZEROSIZE_PERCPU_SUPPORT
+	def_bool $(success, test `$(PAHOLE) --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/'` -ge "122")
+

This does not seem workable with dummy-tools.

Do we even have dummy pahole?

I don't think so but if PAHOLE_HAS_ZEROSIZE_PERCPU_SUPPORT is broken for
you then the same problem should have happened for the PAHOLE_HAS_SPLIT_BTF
check.

-- 
Mel Gorman
SUSE Labs