tracing, slab: Fix no callsite ifndef CONFIG_KMEMTRACE
For slab, if CONFIG_KMEMTRACE and CONFIG_DEBUG_SLAB are not set,
__do_kmalloc() will not track callers:
# ./perf record -f -a -R -e kmem:kmalloc
^C
# ./perf trace
...
perf-2204 [000] 147.376774: kmalloc: call_site=c0529d2d ...
perf-2204 [000] 147.400997: kmalloc: call_site=c0529d2d ...
Xorg-1461 [001] 147.405413: kmalloc: call_site=0 ...
Xorg-1461 [001] 147.405609: kmalloc: call_site=0 ...
konsole-1776 [001] 147.405786: kmalloc: call_site=0 ...
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: linux-mm@kvack.org <linux-mm@kvack.org>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
LKML-Reference: <4B21F8AE.6020804@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 file changed