| Message ID | 1553846032-4451-2-git-send-email-joshi.k@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Extend write-hint for in-kernel use | expand |
On Mar 29, 2019, at 1:53 AM, Kanchan Joshi <joshi.k@samsung.com> wrote: > > This patch bumps up stream count to suppor in-kernel hints. It also > adds 'streamid' member in 'request' and declares new API for driver > to register stream-info with block layer. > > Signed-off-by: Kanchan Joshi <joshi.k@samsung.com> > --- > include/linux/blkdev.h | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h > index 338604d..4088e21 100644 > --- a/include/linux/blkdev.h > +++ b/include/linux/blkdev.h > @@ -214,6 +214,7 @@ struct request { > #endif > > unsigned short write_hint; > + unsigned short streamid; > unsigned short ioprio; > > void *special; /* opaque pointer available for LLD use */ > @@ -341,6 +342,8 @@ struct queue_limits { > unsigned char misaligned; > unsigned char discard_misaligned; > unsigned char raid_partial_stripes_expensive; > + > + unsigned short nr_streams; > enum blk_zoned_model zoned; > }; > > @@ -567,8 +570,9 @@ struct request_queue { > size_t cmd_size; > > struct work_struct release_work; > - > -#define BLK_MAX_WRITE_HINTS 5 > +#define BLK_MAX_USER_HINTS (WRITE_LIFE_KERN_MIN - 2) > +#define BLK_MAX_KERN_HINTS 4 > +#define BLK_MAX_WRITE_HINTS (1 + BLK_MAX_USER_HINTS + BLK_MAX_KERN_HINTS) > u64 write_hints[BLK_MAX_WRITE_HINTS]; > }; > > @@ -1071,6 +1075,7 @@ extern void blk_queue_update_dma_alignment(struct request_queue *, int); > extern void blk_queue_rq_timeout(struct request_queue *, unsigned int); > extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable); > extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua); > +extern void blk_queue_stream_limits(struct request_queue *, unsigned short); This declaration should be in the 2/7 patch where the function is added. Cheers, Andreas
On Fri, Mar 29, 2019 at 01:23:46PM +0530, Kanchan Joshi wrote: > This patch bumps up stream count to suppor in-kernel hints. It also > adds 'streamid' member in 'request' and declares new API for driver > to register stream-info with block layer. > > Signed-off-by: Kanchan Joshi <joshi.k@samsung.com> > --- > include/linux/blkdev.h | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h > index 338604d..4088e21 100644 > --- a/include/linux/blkdev.h > +++ b/include/linux/blkdev.h > @@ -214,6 +214,7 @@ struct request { > #endif > > unsigned short write_hint; > + unsigned short streamid; > unsigned short ioprio; > > void *special; /* opaque pointer available for LLD use */ > @@ -341,6 +342,8 @@ struct queue_limits { > unsigned char misaligned; > unsigned char discard_misaligned; > unsigned char raid_partial_stripes_expensive; > + > + unsigned short nr_streams; > enum blk_zoned_model zoned; > }; > > @@ -567,8 +570,9 @@ struct request_queue { > size_t cmd_size; > > struct work_struct release_work; > - > -#define BLK_MAX_WRITE_HINTS 5 > +#define BLK_MAX_USER_HINTS (WRITE_LIFE_KERN_MIN - 2) WRITE_LIFE_KERN_MIN is undefined. -Dave. > +#define BLK_MAX_KERN_HINTS 4 > +#define BLK_MAX_WRITE_HINTS (1 + BLK_MAX_USER_HINTS + BLK_MAX_KERN_HINTS) > u64 write_hints[BLK_MAX_WRITE_HINTS]; > }; > > @@ -1071,6 +1075,7 @@ extern void blk_queue_update_dma_alignment(struct request_queue *, int); > extern void blk_queue_rq_timeout(struct request_queue *, unsigned int); > extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable); > extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua); > +extern void blk_queue_stream_limits(struct request_queue *, unsigned short); > > /* > * Number of physical segments as sent to the device. > -- > 2.7.4 > >
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 338604d..4088e21 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -214,6 +214,7 @@ struct request { #endif unsigned short write_hint; + unsigned short streamid; unsigned short ioprio; void *special; /* opaque pointer available for LLD use */ @@ -341,6 +342,8 @@ struct queue_limits { unsigned char misaligned; unsigned char discard_misaligned; unsigned char raid_partial_stripes_expensive; + + unsigned short nr_streams; enum blk_zoned_model zoned; }; @@ -567,8 +570,9 @@ struct request_queue { size_t cmd_size; struct work_struct release_work; - -#define BLK_MAX_WRITE_HINTS 5 +#define BLK_MAX_USER_HINTS (WRITE_LIFE_KERN_MIN - 2) +#define BLK_MAX_KERN_HINTS 4 +#define BLK_MAX_WRITE_HINTS (1 + BLK_MAX_USER_HINTS + BLK_MAX_KERN_HINTS) u64 write_hints[BLK_MAX_WRITE_HINTS]; }; @@ -1071,6 +1075,7 @@ extern void blk_queue_update_dma_alignment(struct request_queue *, int); extern void blk_queue_rq_timeout(struct request_queue *, unsigned int); extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable); extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua); +extern void blk_queue_stream_limits(struct request_queue *, unsigned short); /* * Number of physical segments as sent to the device.
This patch bumps up stream count to suppor in-kernel hints. It also adds 'streamid' member in 'request' and declares new API for driver to register stream-info with block layer. Signed-off-by: Kanchan Joshi <joshi.k@samsung.com> --- include/linux/blkdev.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)