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| author | Andrew Morton <akpm@linux-foundation.org> | 2025-09-21 14:19:36 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-09-21 14:19:36 -0700 |
| commit | bc9950b56f16e9cc53879118bfddcc175355a75a (patch) | |
| tree | 484cc703bc50a82af45288fffdf92c8a03debf27 /mm/percpu.c | |
| parent | 103e90626d3a4032d22e8b09ff14600e71cda59c (diff) | |
| parent | ce4be9e4307c5a60701ff6e0cafa74caffdc54ce (diff) | |
Merge branch 'mm-hotfixes-stable' into mm-stable in order to pick up
changes required by mm-stable material: hugetlb and damon.
Diffstat (limited to 'mm/percpu.c')
| -rw-r--r-- | mm/percpu.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index a56f35dcc417..81462ce5866e 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1734,7 +1734,7 @@ void __percpu *pcpu_alloc_noprof(size_t size, size_t align, bool reserved, bool is_atomic; bool do_warn; struct obj_cgroup *objcg = NULL; - static int warn_limit = 10; + static atomic_t warn_limit = ATOMIC_INIT(10); struct pcpu_chunk *chunk, *next; const char *err; int slot, off, cpu, ret; @@ -1904,13 +1904,17 @@ fail_unlock: fail: trace_percpu_alloc_percpu_fail(reserved, is_atomic, size, align); - if (do_warn && warn_limit) { - pr_warn("allocation failed, size=%zu align=%zu atomic=%d, %s\n", - size, align, is_atomic, err); - if (!is_atomic) - dump_stack(); - if (!--warn_limit) - pr_info("limit reached, disable warning\n"); + if (do_warn) { + int remaining = atomic_dec_if_positive(&warn_limit); + + if (remaining >= 0) { + pr_warn("allocation failed, size=%zu align=%zu atomic=%d, %s\n", + size, align, is_atomic, err); + if (!is_atomic) + dump_stack(); + if (remaining == 0) + pr_info("limit reached, disable warning\n"); + } } if (is_atomic) { |