diff options
author | Jim Harris <jimharris@FreeBSD.org> | 2012-10-10 23:28:58 +0000 |
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committer | Jim Harris <jimharris@FreeBSD.org> | 2012-10-10 23:28:58 +0000 |
commit | 8bed48f25d3df5aa13654651ee5bc4284f10d310 (patch) | |
tree | 051062c33d1a6cb48ff803314f0874ae1d530d6a /sys/dev/nvme/nvme_private.h | |
parent | 72acfaabbf204daea594504588cda2f7ce14f71f (diff) | |
download | src-8bed48f25d3df5aa13654651ee5bc4284f10d310.tar.gz src-8bed48f25d3df5aa13654651ee5bc4284f10d310.zip |
Put the nvme_qpair mutex on its own cacheline.
Sponsored by: Intel
Notes
Notes:
svn path=/head/; revision=241433
Diffstat (limited to 'sys/dev/nvme/nvme_private.h')
-rw-r--r-- | sys/dev/nvme/nvme_private.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/sys/dev/nvme/nvme_private.h b/sys/dev/nvme/nvme_private.h index 667238b0bace..ae7faf92a146 100644 --- a/sys/dev/nvme/nvme_private.h +++ b/sys/dev/nvme/nvme_private.h @@ -88,6 +88,10 @@ MALLOC_DECLARE(M_NVME); #define NVME_TIMEOUT_IN_SEC (30) +#ifndef CACHE_LINE_SIZE +#define CACHE_LINE_SIZE (64) +#endif + struct nvme_prp_list { uint64_t prp[NVME_MAX_PRP_LIST_ENTRIES]; SLIST_ENTRY(nvme_prp_list) slist; @@ -131,8 +135,6 @@ struct nvme_qpair { int64_t num_cmds; - struct mtx lock; - struct nvme_command *cmd; struct nvme_completion *cpl; @@ -152,7 +154,10 @@ struct nvme_qpair { struct nvme_tracker **act_tr; SLIST_HEAD(, nvme_prp_list) free_prp_list; -}; + + struct mtx lock __aligned(CACHE_LINE_SIZE); + +} __aligned(CACHE_LINE_SIZE); struct nvme_namespace { |