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| author | Adrian Hunter <adrian.hunter@intel.com> | 2017-09-22 15:36:51 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-10-30 11:45:49 +0100 |
| commit | 6c0cedd1ef9527ef13e66875746570e76a3188a7 (patch) | |
| tree | 62142b1581211372e8adae97b574979cac6c15a2 /include/linux/mmc | |
| parent | 9ca28c5cd967e07e708a407eec59894e2e643670 (diff) | |
| download | lwn-6c0cedd1ef9527ef13e66875746570e76a3188a7.tar.gz lwn-6c0cedd1ef9527ef13e66875746570e76a3188a7.zip | |
mmc: core: Introduce host claiming by context
Currently the host can be claimed by a task. Change this so that the host
can be claimed by a context that may or may not be a task. This provides
for the host to be claimed by a block driver queue to support blk-mq, while
maintaining compatibility with the existing use of mmc_claim_host().
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/host.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 9a43763a68ad..443f7a8cdfe5 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -255,6 +255,10 @@ struct mmc_supply { struct regulator *vqmmc; /* Optional Vccq supply */ }; +struct mmc_ctx { + struct task_struct *task; +}; + struct mmc_host { struct device *parent; struct device class_dev; @@ -388,8 +392,9 @@ struct mmc_host { struct mmc_card *card; /* device attached to this host */ wait_queue_head_t wq; - struct task_struct *claimer; /* task that has host claimed */ + struct mmc_ctx *claimer; /* context that has host claimed */ int claim_cnt; /* "claim" nesting count */ + struct mmc_ctx default_ctx; /* default context */ struct delayed_work detect; int detect_change; /* card detect flag */ |