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-rw-r--r--lib/Kconfig.debug17
1 files changed, 15 insertions, 2 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 77e0d8b1b7c5..43173c4e0ade 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -340,8 +340,6 @@ config DEBUG_KMEMLEAK
340 bool "Kernel memory leak detector" 340 bool "Kernel memory leak detector"
341 depends on DEBUG_KERNEL && EXPERIMENTAL && (X86 || ARM) && \ 341 depends on DEBUG_KERNEL && EXPERIMENTAL && (X86 || ARM) && \
342 !MEMORY_HOTPLUG 342 !MEMORY_HOTPLUG
343 select DEBUG_SLAB if SLAB
344 select SLUB_DEBUG if SLUB
345 select DEBUG_FS if SYSFS 343 select DEBUG_FS if SYSFS
346 select STACKTRACE if STACKTRACE_SUPPORT 344 select STACKTRACE if STACKTRACE_SUPPORT
347 select KALLSYMS 345 select KALLSYMS
@@ -355,9 +353,24 @@ config DEBUG_KMEMLEAK
355 allocations. See Documentation/kmemleak.txt for more 353 allocations. See Documentation/kmemleak.txt for more
356 details. 354 details.
357 355
356 Enabling DEBUG_SLAB or SLUB_DEBUG may increase the chances
357 of finding leaks due to the slab objects poisoning.
358
358 In order to access the kmemleak file, debugfs needs to be 359 In order to access the kmemleak file, debugfs needs to be
359 mounted (usually at /sys/kernel/debug). 360 mounted (usually at /sys/kernel/debug).
360 361
362config DEBUG_KMEMLEAK_EARLY_LOG_SIZE
363 int "Maximum kmemleak early log entries"
364 depends on DEBUG_KMEMLEAK
365 range 200 2000
366 default 400
367 help
368 Kmemleak must track all the memory allocations to avoid
369 reporting false positives. Since memory may be allocated or
370 freed before kmemleak is initialised, an early log buffer is
371 used to store these actions. If kmemleak reports "early log
372 buffer exceeded", please increase this value.
373
361config DEBUG_KMEMLEAK_TEST 374config DEBUG_KMEMLEAK_TEST
362 tristate "Simple test for the kernel memory leak detector" 375 tristate "Simple test for the kernel memory leak detector"
363 depends on DEBUG_KMEMLEAK 376 depends on DEBUG_KMEMLEAK