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copy: make io_prio configurable via /proc

This commit is contained in:
Thomas Schoebel-Theuer 2013-07-18 14:42:07 +02:00
parent 08b27c548e
commit 72a2537c6d
3 changed files with 15 additions and 1 deletions
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12
kernel/mars_copy.c
View File

@ -35,6 +35,12 @@
int mars_copy_overlap = 0;
EXPORT_SYMBOL_GPL(mars_copy_overlap);
int mars_copy_read_prio = MARS_PRIO_NORMAL;
EXPORT_SYMBOL_GPL(mars_copy_read_prio);
int mars_copy_write_prio = MARS_PRIO_NORMAL;
EXPORT_SYMBOL_GPL(mars_copy_write_prio);
///////////////////////// own helper functions ////////////////////////
/* TODO:
@ -261,7 +267,11 @@ int _make_mref(struct copy_brick *brick, int index, int queue, void *data, loff_
len = end_pos - pos;
}
mref->ref_len = len;
mref->ref_prio = brick->io_prio;
mref->ref_prio = rw ?
mars_copy_write_prio :
mars_copy_read_prio;
if (mref->ref_prio < MARS_PRIO_HIGH || mref->ref_prio > MARS_PRIO_LOW)
mref->ref_prio = brick->io_prio;
SETUP_CALLBACK(mref, copy_endio, mref_a);

2
kernel/mars_copy.h
View File

@ -11,6 +11,8 @@
#define INPUT_B_COPY 3
extern int mars_copy_overlap;
extern int mars_copy_read_prio;
extern int mars_copy_write_prio;
enum {
COPY_STATE_RESET = -1,

2
kernel/sy_old/mars_proc.c
View File

@ -231,6 +231,8 @@ ctl_table mars_table[] = {
INT_ENTRY("mem_used_raw_kb", brick_global_block_used,0400),
INT_ENTRY("io_flying_count", mars_global_io_flying, 0400),
INT_ENTRY("copy_overlap", mars_copy_overlap, 0600),
INT_ENTRY("copy_read_prio", mars_copy_read_prio, 0600),
INT_ENTRY("copy_write_prio", mars_copy_write_prio, 0600),
INT_ENTRY("statusfiles_rollover_sec", mars_rollover_interval, 0600),
INT_ENTRY("scan_interval_sec", mars_scan_interval, 0600),
INT_ENTRY("propagate_interval_sec", mars_propagate_interval, 0600),