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[v6,16/37] mm: percpu: increase PERCPU_MODULE_RESERVE to accommodate allocation tags

Message ID 20240321163705.3067592-17-surenb@google.com (mailing list archive)
State New, archived
Headers show
Series Memory allocation profiling | expand

Commit Message

Suren Baghdasaryan March 21, 2024, 4:36 p.m. UTC 
As each allocation tag generates a per-cpu variable, more space is required
to store them. Increase PERCPU_MODULE_RESERVE to provide enough area. A
better long-term solution would be to allocate this memory dynamically.

Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
---
 include/linux/percpu.h | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 8c677f185901..62b5eb45bd89 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -14,7 +14,11 @@ 
 
 /* enough to cover all DEFINE_PER_CPUs in modules */
 #ifdef CONFIG_MODULES
+#ifdef CONFIG_MEM_ALLOC_PROFILING
+#define PERCPU_MODULE_RESERVE		(8 << 12)
+#else
 #define PERCPU_MODULE_RESERVE		(8 << 10)
+#endif
 #else
 #define PERCPU_MODULE_RESERVE		0
 #endif