sched: Show PF_flag holes

Put placeholders in PF_flag so we can see how holey it is.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/YxctoffFFPXONESt@hirez.programming.kicks-ass.net

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4c91efd..15e3bd9 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1722,7 +1722,9 @@ extern struct pid *cad_pid;
 #define PF_MEMALLOC            0x00000800      /* Allocating memory */
 #define PF_NPROC_EXCEEDED      0x00001000      /* set_user() noticed that RLIMIT_NPROC was exceeded */
 #define PF_USED_MATH           0x00002000      /* If unset the fpu must be initialized before use */
+#define PF__HOLE__00004000     0x00004000
 #define PF_NOFREEZE            0x00008000      /* This thread should not be frozen */
+#define PF__HOLE__00010000     0x00010000
 #define PF_KSWAPD              0x00020000      /* I am kswapd */
 #define PF_MEMALLOC_NOFS       0x00040000      /* All allocation requests will inherit GFP_NOFS */
 #define PF_MEMALLOC_NOIO       0x00080000      /* All allocation requests will inherit GFP_NOIO */
@@ -1730,9 +1732,14 @@ extern struct pid *cad_pid;
                                                 * I am cleaning dirty pages from some other bdi. */
 #define PF_KTHREAD             0x00200000      /* I am a kernel thread */
 #define PF_RANDOMIZE           0x00400000      /* Randomize virtual address space */
+#define PF__HOLE__00800000     0x00800000
+#define PF__HOLE__01000000     0x01000000
+#define PF__HOLE__02000000     0x02000000
 #define PF_NO_SETAFFINITY      0x04000000      /* Userland is not allowed to meddle with cpus_mask */
 #define PF_MCE_EARLY           0x08000000      /* Early kill for mce process policy */
 #define PF_MEMALLOC_PIN                0x10000000      /* Allocation context constrained to zones which allow long term pinning. */
+#define PF__HOLE__20000000     0x20000000
+#define PF__HOLE__40000000     0x40000000
 #define PF_SUSPEND_TASK                0x80000000      /* This thread called freeze_processes() and should not be frozen */
 
 /*