[PATCH 1/5] mm/vmalloc: query dynamic DEBUG_PAGEALLOC setting
From: Joonsoo Kim <hidden>
Date: 2016-02-04 05:58:14
Also in:
linux-mm, lkml
Subsystem:
memory management, the rest, vmalloc · Maintainers:
Andrew Morton, Linus Torvalds, Uladzislau Rezki
We can disable debug_pagealloc processing even if the code is complied with CONFIG_DEBUG_PAGEALLOC. This patch changes the code to query whether it is enabled or not in runtime. Signed-off-by: Joonsoo Kim <redacted> --- mm/vmalloc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index fb42a5b..e0e51bd 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c@@ -543,10 +543,10 @@ static void vmap_debug_free_range(unsigned long start, unsigned long end) * debugging doesn't do a broadcast TLB flush so it is a lot * faster). */ -#ifdef CONFIG_DEBUG_PAGEALLOC - vunmap_page_range(start, end); - flush_tlb_kernel_range(start, end); -#endif + if (debug_pagealloc_enabled()) { + vunmap_page_range(start, end); + flush_tlb_kernel_range(start, end); + } } /*
--
1.9.1
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