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authorTheodore Ts'o <tytso@mit.edu>2013-09-12 14:10:25 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-10-10 14:32:16 -0400
commit5910895f0e868d4f70303922ed00ccdc328b3c30 (patch)
treec51b3a58cad1a18e941f1d0ed1c56747944aa3cc /drivers/char
parent30e37ec516ae5a6957596de7661673c615c82ea4 (diff)
random: fix the tracepoint for get_random_bytes(_arch)
Fix a problem where get_random_bytes_arch() was calling the tracepoint get_random_bytes(). So add a new tracepoint for get_random_bytes_arch(), and make get_random_bytes() and get_random_bytes_arch() call their correct tracepoint. Also, add a new tracepoint for add_device_randomness() Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/random.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 867b823e7fea..80b58774e891 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -711,6 +711,7 @@ void add_device_randomness(const void *buf, unsigned int size)
{
unsigned long time = random_get_entropy() ^ jiffies;
+ trace_add_device_randomness(size, _RET_IP_);
mix_pool_bytes(&input_pool, buf, size, NULL);
mix_pool_bytes(&input_pool, &time, sizeof(time), NULL);
mix_pool_bytes(&nonblocking_pool, buf, size, NULL);
@@ -1127,6 +1128,7 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf,
*/
void get_random_bytes(void *buf, int nbytes)
{
+ trace_get_random_bytes(nbytes, _RET_IP_);
extract_entropy(&nonblocking_pool, buf, nbytes, 0, 0);
}
EXPORT_SYMBOL(get_random_bytes);
@@ -1145,7 +1147,7 @@ void get_random_bytes_arch(void *buf, int nbytes)
{
char *p = buf;
- trace_get_random_bytes(nbytes, _RET_IP_);
+ trace_get_random_bytes_arch(nbytes, _RET_IP_);
while (nbytes) {
unsigned long v;
int chunk = min(nbytes, (int)sizeof(unsigned long));