From: Liu Shixin liushixin2@huawei.com
hulk inclusion category: bugfix bugzilla: 46904, https://gitee.com/openeuler/kernel/issues/I4YXOA
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When building with defconfig on arm32, we got a compile error: ./include/linux/page-flags-layout.h:95:2: error: #error "Not enough bits in page flags" 95 | #error "Not enough bits in page flags" | ^~~~~
Limit PG_pool to compile only on X86_64 and ARM64 to resolve this issue.
Signed-off-by: Liu Shixin liushixin2@huawei.com Reviewed-by: Kefeng Wang wangkefeng.wang@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- fs/proc/page.c | 2 ++ include/linux/page-flags.h | 6 ++++++ include/trace/events/mmflags.h | 10 ++++++++-- 3 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/fs/proc/page.c b/fs/proc/page.c index d00c23d543fe..4c5bef99ec10 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -220,7 +220,9 @@ u64 stable_page_flags(struct page *page) #ifdef CONFIG_64BIT u |= kpf_copy_bit(k, KPF_ARCH_2, PG_arch_2); #endif +#if defined(CONFIG_X86_64) || defined(CONFIG_ARM64) u |= kpf_copy_bit(k, KPF_POOL, PG_pool); +#endif
return u; }; diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index eb2fe22bc0e9..e1af0a6c8165 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -139,7 +139,9 @@ enum pageflags { #ifdef CONFIG_64BIT PG_arch_2, #endif +#if defined(CONFIG_X86_64) || defined(CONFIG_ARM64) PG_pool, /* Used to track page allocated from dynamic hugetlb pool */ +#endif #ifdef CONFIG_PIN_MEMORY PG_hotreplace, #endif @@ -474,7 +476,11 @@ __PAGEFLAG(Reported, reported, PF_NO_COMPOUND) /* * PagePool() is used to track page allocated from hpool. */ +#if defined(CONFIG_X86_64) || defined(CONFIG_ARM64) PAGEFLAG(Pool, pool, PF_NO_TAIL) +#else +PAGEFLAG_FALSE(Pool) +#endif
/* * On an anonymous page mapped into a user virtual memory area, diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h index dc1805fbf893..b50012bea1ef 100644 --- a/include/trace/events/mmflags.h +++ b/include/trace/events/mmflags.h @@ -87,6 +87,12 @@ #define IF_HAVE_PG_ARCH_2(flag,string) #endif
+#if defined(CONFIG_X86_64) || defined(CONFIG_ARM64) +#define IF_HAVE_PG_POOL(flag,string) ,{1UL << flag, string} +#else +#define IF_HAVE_PG_POOL(flag,string) +#endif + #ifdef CONFIG_PIN_MEMORY #define IF_HAVE_PG_HOTREPLACE(flag, string) ,{1UL << flag, string} #else @@ -114,14 +120,14 @@ {1UL << PG_mappedtodisk, "mappedtodisk" }, \ {1UL << PG_reclaim, "reclaim" }, \ {1UL << PG_swapbacked, "swapbacked" }, \ - {1UL << PG_unevictable, "unevictable" }, \ - {1UL << PG_pool, "pool" } \ + {1UL << PG_unevictable, "unevictable" } \ IF_HAVE_PG_MLOCK(PG_mlocked, "mlocked" ) \ IF_HAVE_PG_UNCACHED(PG_uncached, "uncached" ) \ IF_HAVE_PG_HWPOISON(PG_hwpoison, "hwpoison" ) \ IF_HAVE_PG_IDLE(PG_young, "young" ) \ IF_HAVE_PG_IDLE(PG_idle, "idle" ) \ IF_HAVE_PG_ARCH_2(PG_arch_2, "arch_2" ) \ +IF_HAVE_PG_POOL(PG_pool, "pool" ) \ IF_HAVE_PG_HOTREPLACE(PG_hotreplace, "hotreplace" ), \ {1UL << PG_reserve_pgflag_0, "reserve_pgflag_0"}, \ {1UL << PG_reserve_pgflag_1, "reserve_pgflag_1"}
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Zheng Zengkai