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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-19 20:23:37 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-19 20:23:37 -0800
commit7005cd39707ba59b5b1d3e70da2c448d3235eb3e (patch)
tree89ed68e2cfd68f038d58f86a0eb5fe7eea279103 /kernel
parent2f0bf92513be58d2d65c0a4cc05c5779a7cd81e1 (diff)
parent6133705494bb02953e1e2cc3018a4373981b3c97 (diff)
downloadlinux-7005cd39707ba59b5b1d3e70da2c448d3235eb3e.tar.gz
Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random updates from Ted Ts'o:
 "A few /dev/random improvements for the v3.8 merge window."

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: Mix cputime from each thread that exits to the pool
  random: prime last_data value per fips requirements
  random: fix debug format strings
  random: make it possible to enable debugging without rebuild
Diffstat (limited to 'kernel')
-rw-r--r--kernel/posix-cpu-timers.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index d73840271dce..a278cad1d5d6 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -9,6 +9,7 @@
 #include <asm/uaccess.h>
 #include <linux/kernel_stat.h>
 #include <trace/events/timer.h>
+#include <linux/random.h>
 
 /*
  * Called after updating RLIMIT_CPU to run cpu timer and update
@@ -470,6 +471,8 @@ static void cleanup_timers(struct list_head *head,
  */
 void posix_cpu_timers_exit(struct task_struct *tsk)
 {
+	add_device_randomness((const void*) &tsk->se.sum_exec_runtime,
+						sizeof(unsigned long long));
 	cleanup_timers(tsk->cpu_timers,
 		       tsk->utime, tsk->stime, tsk->se.sum_exec_runtime);