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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-08 06:44:48 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-08 06:44:48 -0400
commit87d7bcee4f5973a593b0d50134364cfe5652ff33 (patch)
tree677125896b64de2f5acfa204955442f58e74cfa9 /kernel
parent0223f9aaef94a09ffc0b6abcba732e62a483b88c (diff)
parentbe34c4ef693ff5c10f55606dbd656ddf0b4a8340 (diff)
downloadlinux-87d7bcee4f5973a593b0d50134364cfe5652ff33.tar.bz2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu: - add multibuffer infrastructure (single_task_running scheduler helper, OKed by Peter on lkml. - add SHA1 multibuffer implementation for AVX2. - reenable "by8" AVX CTR optimisation after fixing counter overflow. - add APM X-Gene SoC RNG support. - SHA256/SHA512 now handles unaligned input correctly. - set lz4 decompressed length correctly. - fix algif socket buffer allocation failure for 64K page machines. - misc fixes * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (47 commits) crypto: sha - Handle unaligned input data in generic sha256 and sha512. Revert "crypto: aesni - disable "by8" AVX CTR optimization" crypto: aesni - remove unused defines in "by8" variant crypto: aesni - fix counter overflow handling in "by8" variant hwrng: printk replacement crypto: qat - Removed unneeded partial state crypto: qat - Fix typo in name of tasklet_struct crypto: caam - Dynamic allocation of addresses for various memory blocks in CAAM. crypto: mcryptd - Fix typos in CRYPTO_MCRYPTD description crypto: algif - avoid excessive use of socket buffer in skcipher arm64: dts: add random number generator dts node to APM X-Gene platform. Documentation: rng: Add X-Gene SoC RNG driver documentation hwrng: xgene - add support for APM X-Gene SoC RNG support crypto: mv_cesa - Add missing #define crypto: testmgr - add test for lz4 and lz4hc crypto: lz4,lz4hc - fix decompression crypto: qat - Use pci_enable_msix_exact() instead of pci_enable_msix() crypto: drbg - fix maximum value checks on 32 bit systems crypto: drbg - fix sparse warning for cpu_to_be[32|64] crypto: sha-mb - sha1_mb_alg_state can be static ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched/core.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index ec1a286684a5..59965ec0b7de 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2366,6 +2366,18 @@ unsigned long nr_running(void)
return sum;
}
+/*
+ * Check if only the current task is running on the cpu.
+ */
+bool single_task_running(void)
+{
+ if (cpu_rq(smp_processor_id())->nr_running == 1)
+ return true;
+ else
+ return false;
+}
+EXPORT_SYMBOL(single_task_running);
+
unsigned long long nr_context_switches(void)
{
int i;