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| author | Wei Yang <richard.weiyang@gmail.com> | 2024-07-01 03:34:09 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-10 21:14:54 +0200 |
| commit | 66b4aaf7335c9e7f59ba93a45379ba2bbfe1b913 (patch) | |
| tree | 4a1f71157dfbc6f588fa7a9478ebe318172d461b /kernel/fork.c | |
| parent | mm: remove CONFIG_MEMCG_KMEM (diff) | |
| download | linux-66b4aaf7335c9e7f59ba93a45379ba2bbfe1b913.tar.xz linux-66b4aaf7335c9e7f59ba93a45379ba2bbfe1b913.zip | |
kernel/fork.c: get totalram_pages from memblock to calculate max_threads
Since we plan to move the accounting into __free_pages_core(),
totalram_pages may not represent the total usable pages on system at this
point when defer_init is enabled.
Instead we can get the total usable pages from memblock directly.
Link: https://lkml.kernel.org/r/20240701013410.17260-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | kernel/fork.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 279efadabbf2..60309c6d6074 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -44,6 +44,7 @@ #include <linux/fs.h> #include <linux/mm.h> #include <linux/mm_inline.h> +#include <linux/memblock.h> #include <linux/nsproxy.h> #include <linux/capability.h> #include <linux/cpu.h> @@ -999,7 +1000,7 @@ void __init __weak arch_task_cache_init(void) { } static void set_max_threads(unsigned int max_threads_suggested) { u64 threads; - unsigned long nr_pages = totalram_pages(); + unsigned long nr_pages = PHYS_PFN(memblock_phys_mem_size() - memblock_reserved_size()); /* * The number of threads shall be limited such that the thread |