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Commit d55249d3 authored by Jens Axboe's avatar Jens Axboe Committed by Linus Torvalds
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[PATCH] convert jiffies <-> msecs for io schedulers 

The various io schedulers don't convert to and from jiffies and ms in their
sysfs exported values.  This patch adds that.
Signed-off-by: default avatarJens Axboe <axboe@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent f9887e4a
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Showing with 64 additions and 47 deletions
drivers/block/as-iosched.c
View file @ d55249d3
......@@ -1962,10 +1962,10 @@ static ssize_t as_est_show(struct as_data *ad, char *page)
return pos;
}
#define SHOW_FUNCTION(__FUNC, __VAR) \
#define SHOW_FUNCTION(__FUNC, __VAR) \
static ssize_t __FUNC(struct as_data *ad, char *page) \
{ \
return as_var_show(__VAR, (page)); \
{ \
return as_var_show(jiffies_to_msecs((__VAR)), (page)); \
}
SHOW_FUNCTION(as_readexpire_show, ad->fifo_expire[REQ_SYNC]);
SHOW_FUNCTION(as_writeexpire_show, ad->fifo_expire[REQ_ASYNC]);
......@@ -1982,6 +1982,7 @@ static ssize_t __FUNC(struct as_data *ad, const char *page, size_t count) \
*(__PTR) = (MIN); \
else if (*(__PTR) > (MAX)) \
*(__PTR) = (MAX); \
*(__PTR) = msecs_to_jiffies(*(__PTR)); \
return ret; \
}
STORE_FUNCTION(as_readexpire_store, &ad->fifo_expire[REQ_SYNC], 0, INT_MAX);
......
drivers/block/cfq-iosched.c
View file @ d55249d3
......@@ -1732,39 +1732,47 @@ cfq_status_show(struct cfq_data *cfqd, char *page)
return len;
}
#define SHOW_FUNCTION(__FUNC, __VAR) \
#define SHOW_FUNCTION(__FUNC, __VAR, __CONV) \
static ssize_t __FUNC(struct cfq_data *cfqd, char *page) \
{ \
return cfq_var_show(__VAR, (page)); \
}
SHOW_FUNCTION(cfq_quantum_show, cfqd->cfq_quantum);
SHOW_FUNCTION(cfq_queued_show, cfqd->cfq_queued);
SHOW_FUNCTION(cfq_fifo_expire_r_show, cfqd->cfq_fifo_expire_r);
SHOW_FUNCTION(cfq_fifo_expire_w_show, cfqd->cfq_fifo_expire_w);
SHOW_FUNCTION(cfq_fifo_batch_expire_show, cfqd->cfq_fifo_batch_expire);
SHOW_FUNCTION(cfq_find_best_show, cfqd->find_best_crq);
SHOW_FUNCTION(cfq_back_max_show, cfqd->cfq_back_max);
SHOW_FUNCTION(cfq_back_penalty_show, cfqd->cfq_back_penalty);
unsigned int __data = __VAR; \
if (__CONV) \
__data = jiffies_to_msecs(__data); \
return cfq_var_show(__data, (page)); \
}
SHOW_FUNCTION(cfq_quantum_show, cfqd->cfq_quantum, 0);
SHOW_FUNCTION(cfq_queued_show, cfqd->cfq_queued, 0);
SHOW_FUNCTION(cfq_fifo_expire_r_show, cfqd->cfq_fifo_expire_r, 1);
SHOW_FUNCTION(cfq_fifo_expire_w_show, cfqd->cfq_fifo_expire_w, 1);
SHOW_FUNCTION(cfq_fifo_batch_expire_show, cfqd->cfq_fifo_batch_expire, 1);
SHOW_FUNCTION(cfq_find_best_show, cfqd->find_best_crq, 0);
SHOW_FUNCTION(cfq_back_max_show, cfqd->cfq_back_max, 0);
SHOW_FUNCTION(cfq_back_penalty_show, cfqd->cfq_back_penalty, 0);
#undef SHOW_FUNCTION
#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX) \
#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \
static ssize_t __FUNC(struct cfq_data *cfqd, const char *page, size_t count) \
{ \
int ret = cfq_var_store(__PTR, (page), count); \
if (*(__PTR) < (MIN)) \
*(__PTR) = (MIN); \
else if (*(__PTR) > (MAX)) \
*(__PTR) = (MAX); \
unsigned int __data; \
int ret = cfq_var_store(&__data, (page), count); \
if (__data < (MIN)) \
__data = (MIN); \
else if (__data > (MAX)) \
__data = (MAX); \
if (__CONV) \
*(__PTR) = msecs_to_jiffies(__data); \
else \
*(__PTR) = __data; \
return ret; \
}
STORE_FUNCTION(cfq_quantum_store, &cfqd->cfq_quantum, 1, UINT_MAX);
STORE_FUNCTION(cfq_queued_store, &cfqd->cfq_queued, 1, UINT_MAX);
STORE_FUNCTION(cfq_fifo_expire_r_store, &cfqd->cfq_fifo_expire_r, 1, UINT_MAX);
STORE_FUNCTION(cfq_fifo_expire_w_store, &cfqd->cfq_fifo_expire_w, 1, UINT_MAX);
STORE_FUNCTION(cfq_fifo_batch_expire_store, &cfqd->cfq_fifo_batch_expire, 0, UINT_MAX);
STORE_FUNCTION(cfq_find_best_store, &cfqd->find_best_crq, 0, 1);
STORE_FUNCTION(cfq_back_max_store, &cfqd->cfq_back_max, 0, UINT_MAX);
STORE_FUNCTION(cfq_back_penalty_store, &cfqd->cfq_back_penalty, 1, UINT_MAX);
STORE_FUNCTION(cfq_quantum_store, &cfqd->cfq_quantum, 1, UINT_MAX, 0);
STORE_FUNCTION(cfq_queued_store, &cfqd->cfq_queued, 1, UINT_MAX, 0);
STORE_FUNCTION(cfq_fifo_expire_r_store, &cfqd->cfq_fifo_expire_r, 1, UINT_MAX, 1);
STORE_FUNCTION(cfq_fifo_expire_w_store, &cfqd->cfq_fifo_expire_w, 1, UINT_MAX, 1);
STORE_FUNCTION(cfq_fifo_batch_expire_store, &cfqd->cfq_fifo_batch_expire, 0, UINT_MAX, 1);
STORE_FUNCTION(cfq_find_best_store, &cfqd->find_best_crq, 0, 1, 0);
STORE_FUNCTION(cfq_back_max_store, &cfqd->cfq_back_max, 0, UINT_MAX, 0);
STORE_FUNCTION(cfq_back_penalty_store, &cfqd->cfq_back_penalty, 1, UINT_MAX, 0);
#undef STORE_FUNCTION
static struct cfq_fs_entry cfq_quantum_entry = {
......
drivers/block/deadline-iosched.c
View file @ d55249d3
......@@ -805,33 +805,41 @@ deadline_var_store(unsigned int *var, const char *page, size_t count)
return count;
}
#define SHOW_FUNCTION(__FUNC, __VAR) \
#define SHOW_FUNCTION(__FUNC, __VAR, __CONV) \
static ssize_t __FUNC(struct deadline_data *dd, char *page) \
{ \
return deadline_var_show(__VAR, (page)); \
}
SHOW_FUNCTION(deadline_readexpire_show, dd->fifo_expire[READ]);
SHOW_FUNCTION(deadline_writeexpire_show, dd->fifo_expire[WRITE]);
SHOW_FUNCTION(deadline_writesstarved_show, dd->writes_starved);
SHOW_FUNCTION(deadline_frontmerges_show, dd->front_merges);
SHOW_FUNCTION(deadline_fifobatch_show, dd->fifo_batch);
unsigned int __data = __VAR; \
if (__CONV) \
__data = jiffies_to_msecs(__data); \
return deadline_var_show(__data, (page)); \
}
SHOW_FUNCTION(deadline_readexpire_show, dd->fifo_expire[READ], 1);
SHOW_FUNCTION(deadline_writeexpire_show, dd->fifo_expire[WRITE], 1);
SHOW_FUNCTION(deadline_writesstarved_show, dd->writes_starved, 0);
SHOW_FUNCTION(deadline_frontmerges_show, dd->front_merges, 0);
SHOW_FUNCTION(deadline_fifobatch_show, dd->fifo_batch, 0);
#undef SHOW_FUNCTION
#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX) \
#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \
static ssize_t __FUNC(struct deadline_data *dd, const char *page, size_t count) \
{ \
int ret = deadline_var_store(__PTR, (page), count); \
if (*(__PTR) < (MIN)) \
*(__PTR) = (MIN); \
else if (*(__PTR) > (MAX)) \
*(__PTR) = (MAX); \
unsigned int __data; \
int ret = deadline_var_store(&__data, (page), count); \
if (__data < (MIN)) \
__data = (MIN); \
else if (__data > (MAX)) \
__data = (MAX); \
if (__CONV) \
*(__PTR) = msecs_to_jiffies(__data); \
else \
*(__PTR) = __data; \
return ret; \
}
STORE_FUNCTION(deadline_readexpire_store, &dd->fifo_expire[READ], 0, INT_MAX);
STORE_FUNCTION(deadline_writeexpire_store, &dd->fifo_expire[WRITE], 0, INT_MAX);
STORE_FUNCTION(deadline_writesstarved_store, &dd->writes_starved, INT_MIN, INT_MAX);
STORE_FUNCTION(deadline_frontmerges_store, &dd->front_merges, 0, 1);
STORE_FUNCTION(deadline_fifobatch_store, &dd->fifo_batch, 0, INT_MAX);
STORE_FUNCTION(deadline_readexpire_store, &dd->fifo_expire[READ], 0, INT_MAX, 1);
STORE_FUNCTION(deadline_writeexpire_store, &dd->fifo_expire[WRITE], 0, INT_MAX, 1);
STORE_FUNCTION(deadline_writesstarved_store, &dd->writes_starved, INT_MIN, INT_MAX, 0);
STORE_FUNCTION(deadline_frontmerges_store, &dd->front_merges, 0, 1, 0);
STORE_FUNCTION(deadline_fifobatch_store, &dd->fifo_batch, 0, INT_MAX, 0);
#undef STORE_FUNCTION
static struct deadline_fs_entry deadline_readexpire_entry = {
......
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