aboutsummaryrefslogtreecommitdiff
path: root/crypto
diff options
context:
space:
mode:
authorSuresh Siddha <suresh.b.siddha@intel.com>2012-09-17 10:37:26 -0700
committerHerbert Xu <herbert@gondor.apana.org.au>2012-09-27 13:32:15 +0800
commitb6f3fefe1fa1e8ea8f6b654e7d552253373cd1c0 (patch)
tree756ea912317e9a04fe5a5b4dfeb996e2511f10e9 /crypto
parent35c41db8f9ca76d7ca3cdc9003ac5a53292026be (diff)
downloadvexpress-lsk-b6f3fefe1fa1e8ea8f6b654e7d552253373cd1c0.tar.gz
crypto, tcrypt: remove local_bh_disable/enable() around local_irq_disable/enable()
Ran into this while looking at some new crypto code using FPU hitting a WARN_ON_ONCE(!irq_fpu_usable()) in the kernel_fpu_begin() on a x86 kernel that uses the new eagerfpu model. In short, current eagerfpu changes return 0 for interrupted_kernel_fpu_idle() and the in_interrupt() thinks it is in the interrupt context because of the local_bh_disable(). Thus resulting in the WARN_ON(). Remove the local_bh_disable/enable() calls around the existing local_irq_disable/enable() calls. local_irq_disable/enable() already disables the BH. [ If there are any other legitimate users calling kernel_fpu_begin() from the process context but with BH disabled, then we can look into fixing the irq_fpu_usable() in future. ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/tcrypt.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 871076b1e0a..1ac77b720b2 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -97,7 +97,6 @@ static int test_cipher_cycles(struct blkcipher_desc *desc, int enc,
int ret = 0;
int i;
- local_bh_disable();
local_irq_disable();
/* Warm-up run. */
@@ -130,7 +129,6 @@ static int test_cipher_cycles(struct blkcipher_desc *desc, int enc,
out:
local_irq_enable();
- local_bh_enable();
if (ret == 0)
printk("1 operation in %lu cycles (%d bytes)\n",
@@ -300,7 +298,6 @@ static int test_hash_cycles_digest(struct hash_desc *desc,
int i;
int ret;
- local_bh_disable();
local_irq_disable();
/* Warm-up run. */
@@ -327,7 +324,6 @@ static int test_hash_cycles_digest(struct hash_desc *desc,
out:
local_irq_enable();
- local_bh_enable();
if (ret)
return ret;
@@ -348,7 +344,6 @@ static int test_hash_cycles(struct hash_desc *desc, struct scatterlist *sg,
if (plen == blen)
return test_hash_cycles_digest(desc, sg, blen, out);
- local_bh_disable();
local_irq_disable();
/* Warm-up run. */
@@ -391,7 +386,6 @@ static int test_hash_cycles(struct hash_desc *desc, struct scatterlist *sg,
out:
local_irq_enable();
- local_bh_enable();
if (ret)
return ret;