android_kernel_xiaomi_sm8350/mm/failslab.c
Pekka Enberg 255d11bc91 kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c
Impact: cleanup

mm/failslab.c depends on slab.h without including it:

    CC      mm/failslab.o
  mm/failslab.c: In function ‘should_failslab’:
  mm/failslab.c:16: error: ‘__GFP_NOFAIL’ undeclared (first use in this function)
  mm/failslab.c:16: error: (Each undeclared identifier is reported only once
  mm/failslab.c:16: error: for each function it appears in.)
  mm/failslab.c:19: error: ‘__GFP_WAIT’ undeclared (first use in this function)
  make[1]: *** [mm/failslab.o] Error 1
  make: *** [mm] Error 2

It gets included implicitly currently - but this will not be the
case with upcoming kmemtrace changes.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
LKML-Reference: <1237888761.25315.69.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-03 12:23:01 +02:00

61 lines
1.3 KiB
C

#include <linux/fault-inject.h>
#include <linux/gfp.h>
static struct {
struct fault_attr attr;
u32 ignore_gfp_wait;
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
struct dentry *ignore_gfp_wait_file;
#endif
} failslab = {
.attr = FAULT_ATTR_INITIALIZER,
.ignore_gfp_wait = 1,
};
bool should_failslab(size_t size, gfp_t gfpflags)
{
if (gfpflags & __GFP_NOFAIL)
return false;
if (failslab.ignore_gfp_wait && (gfpflags & __GFP_WAIT))
return false;
return should_fail(&failslab.attr, size);
}
static int __init setup_failslab(char *str)
{
return setup_fault_attr(&failslab.attr, str);
}
__setup("failslab=", setup_failslab);
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
static int __init failslab_debugfs_init(void)
{
mode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
struct dentry *dir;
int err;
err = init_fault_attr_dentries(&failslab.attr, "failslab");
if (err)
return err;
dir = failslab.attr.dentries.dir;
failslab.ignore_gfp_wait_file =
debugfs_create_bool("ignore-gfp-wait", mode, dir,
&failslab.ignore_gfp_wait);
if (!failslab.ignore_gfp_wait_file) {
err = -ENOMEM;
debugfs_remove(failslab.ignore_gfp_wait_file);
cleanup_fault_attr_dentries(&failslab.attr);
}
return err;
}
late_initcall(failslab_debugfs_init);
#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */