diff options
Diffstat (limited to 'drivers/lightnvm/pblk-sysfs.c')
| -rw-r--r-- | drivers/lightnvm/pblk-sysfs.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/lightnvm/pblk-sysfs.c b/drivers/lightnvm/pblk-sysfs.c index 3c1a586c09a2..bf8fc6699299 100644 --- a/drivers/lightnvm/pblk-sysfs.c +++ b/drivers/lightnvm/pblk-sysfs.c @@ -290,6 +290,11 @@ static ssize_t pblk_sysfs_lines_info(struct pblk *pblk, char *page) return sz; } +static ssize_t pblk_sysfs_get_sec_per_write(struct pblk *pblk, char *page) +{ + return snprintf(page, PAGE_SIZE, "%d\n", pblk->sec_per_write); +} + #ifdef CONFIG_NVM_DEBUG static ssize_t pblk_sysfs_stats_debug(struct pblk *pblk, char *page) { @@ -354,6 +359,29 @@ static ssize_t pblk_sysfs_gc_force(struct pblk *pblk, const char *page, return len; } +static ssize_t pblk_sysfs_set_sec_per_write(struct pblk *pblk, + const char *page, size_t len) +{ + size_t c_len; + int sec_per_write; + + c_len = strcspn(page, "\n"); + if (c_len >= len) + return -EINVAL; + + if (kstrtouint(page, 0, &sec_per_write)) + return -EINVAL; + + if (sec_per_write < pblk->min_write_pgs + || sec_per_write > pblk->max_write_pgs + || sec_per_write % pblk->min_write_pgs != 0) + return -EINVAL; + + pblk_set_sec_per_write(pblk, sec_per_write); + + return len; +} + static struct attribute sys_write_luns = { .name = "write_luns", .mode = 0444, @@ -399,6 +427,11 @@ static struct attribute sys_gc_force = { .mode = 0200, }; +static struct attribute sys_max_sec_per_write = { + .name = "max_sec_per_write", + .mode = 0644, +}; + static struct attribute sys_gc_rl_max = { .name = "gc_rl_max", .mode = 0200, @@ -417,6 +450,7 @@ static struct attribute *pblk_attrs[] = { &sys_errors_attr, &sys_gc_state, &sys_gc_force, + &sys_max_sec_per_write, &sys_gc_rl_max, &sys_rb_attr, &sys_stats_ppaf_attr, @@ -449,6 +483,8 @@ static ssize_t pblk_sysfs_show(struct kobject *kobj, struct attribute *attr, return pblk_sysfs_lines(pblk, buf); else if (strcmp(attr->name, "lines_info") == 0) return pblk_sysfs_lines_info(pblk, buf); + else if (strcmp(attr->name, "max_sec_per_write") == 0) + return pblk_sysfs_get_sec_per_write(pblk, buf); #ifdef CONFIG_NVM_DEBUG else if (strcmp(attr->name, "stats") == 0) return pblk_sysfs_stats_debug(pblk, buf); @@ -465,6 +501,8 @@ static ssize_t pblk_sysfs_store(struct kobject *kobj, struct attribute *attr, return pblk_sysfs_rate_store(pblk, buf, len); else if (strcmp(attr->name, "gc_force") == 0) return pblk_sysfs_gc_force(pblk, buf, len); + else if (strcmp(attr->name, "max_sec_per_write") == 0) + return pblk_sysfs_set_sec_per_write(pblk, buf, len); return 0; } |