From fde212e44f45e491f8e3875084b587c0c2189078 Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Tue, 14 Dec 2021 13:23:14 -0700 Subject: dmaengine: idxd: deprecate token sysfs attributes for read buffers The following sysfs attributes will be obsolete due to the name change of tokens to read buffers: max_tokens token_limit group/tokens_allowed group/tokens_reserved group/use_token_limit Create new entries and have old entry print warning of deprecation. New attributes to replace the token ones: max_read_buffers read_buffer_limit group/read_buffers_allowed group/read_buffers_reserved group/use_read_buffer_limit Signed-off-by: Dave Jiang Link: https://lore.kernel.org/r/163951339488.2988321.2424012059911316373.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul --- drivers/dma/idxd/sysfs.c | 145 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 118 insertions(+), 27 deletions(-) (limited to 'drivers/dma') diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 6f1ebf08878a..7e19ab92b61a 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -112,18 +112,26 @@ static void idxd_set_free_rdbufs(struct idxd_device *idxd) idxd->nr_rdbufs = idxd->max_rdbufs - rdbufs; } -static ssize_t group_tokens_reserved_show(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t group_read_buffers_reserved_show(struct device *dev, + struct device_attribute *attr, + char *buf) { struct idxd_group *group = confdev_to_group(dev); return sysfs_emit(buf, "%u\n", group->rdbufs_reserved); } -static ssize_t group_tokens_reserved_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t group_tokens_reserved_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + dev_warn_once(dev, "attribute deprecated, see read_buffers_reserved.\n"); + return group_read_buffers_reserved_show(dev, attr, buf); +} + +static ssize_t group_read_buffers_reserved_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct idxd_group *group = confdev_to_group(dev); struct idxd_device *idxd = group->idxd; @@ -154,22 +162,42 @@ static ssize_t group_tokens_reserved_store(struct device *dev, return count; } +static ssize_t group_tokens_reserved_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + dev_warn_once(dev, "attribute deprecated, see read_buffers_reserved.\n"); + return group_read_buffers_reserved_store(dev, attr, buf, count); +} + static struct device_attribute dev_attr_group_tokens_reserved = __ATTR(tokens_reserved, 0644, group_tokens_reserved_show, group_tokens_reserved_store); -static ssize_t group_tokens_allowed_show(struct device *dev, - struct device_attribute *attr, - char *buf) +static struct device_attribute dev_attr_group_read_buffers_reserved = + __ATTR(read_buffers_reserved, 0644, group_read_buffers_reserved_show, + group_read_buffers_reserved_store); + +static ssize_t group_read_buffers_allowed_show(struct device *dev, + struct device_attribute *attr, + char *buf) { struct idxd_group *group = confdev_to_group(dev); return sysfs_emit(buf, "%u\n", group->rdbufs_allowed); } -static ssize_t group_tokens_allowed_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t group_tokens_allowed_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + dev_warn_once(dev, "attribute deprecated, see read_buffers_allowed.\n"); + return group_read_buffers_allowed_show(dev, attr, buf); +} + +static ssize_t group_read_buffers_allowed_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct idxd_group *group = confdev_to_group(dev); struct idxd_device *idxd = group->idxd; @@ -197,22 +225,42 @@ static ssize_t group_tokens_allowed_store(struct device *dev, return count; } +static ssize_t group_tokens_allowed_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + dev_warn_once(dev, "attribute deprecated, see read_buffers_allowed.\n"); + return group_read_buffers_allowed_store(dev, attr, buf, count); +} + static struct device_attribute dev_attr_group_tokens_allowed = __ATTR(tokens_allowed, 0644, group_tokens_allowed_show, group_tokens_allowed_store); -static ssize_t group_use_token_limit_show(struct device *dev, - struct device_attribute *attr, - char *buf) +static struct device_attribute dev_attr_group_read_buffers_allowed = + __ATTR(read_buffers_allowed, 0644, group_read_buffers_allowed_show, + group_read_buffers_allowed_store); + +static ssize_t group_use_read_buffer_limit_show(struct device *dev, + struct device_attribute *attr, + char *buf) { struct idxd_group *group = confdev_to_group(dev); return sysfs_emit(buf, "%u\n", group->use_rdbuf_limit); } -static ssize_t group_use_token_limit_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t group_use_token_limit_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + dev_warn_once(dev, "attribute deprecated, see use_read_buffer_limit.\n"); + return group_use_read_buffer_limit_show(dev, attr, buf); +} + +static ssize_t group_use_read_buffer_limit_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct idxd_group *group = confdev_to_group(dev); struct idxd_device *idxd = group->idxd; @@ -239,10 +287,22 @@ static ssize_t group_use_token_limit_store(struct device *dev, return count; } +static ssize_t group_use_token_limit_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + dev_warn_once(dev, "attribute deprecated, see use_read_buffer_limit.\n"); + return group_use_read_buffer_limit_store(dev, attr, buf, count); +} + static struct device_attribute dev_attr_group_use_token_limit = __ATTR(use_token_limit, 0644, group_use_token_limit_show, group_use_token_limit_store); +static struct device_attribute dev_attr_group_use_read_buffer_limit = + __ATTR(use_read_buffer_limit, 0644, group_use_read_buffer_limit_show, + group_use_read_buffer_limit_store); + static ssize_t group_engines_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -387,8 +447,11 @@ static struct attribute *idxd_group_attributes[] = { &dev_attr_group_work_queues.attr, &dev_attr_group_engines.attr, &dev_attr_group_use_token_limit.attr, + &dev_attr_group_use_read_buffer_limit.attr, &dev_attr_group_tokens_allowed.attr, + &dev_attr_group_read_buffers_allowed.attr, &dev_attr_group_tokens_reserved.attr, + &dev_attr_group_read_buffers_reserved.attr, &dev_attr_group_traffic_class_a.attr, &dev_attr_group_traffic_class_b.attr, NULL, @@ -1192,26 +1255,42 @@ static ssize_t errors_show(struct device *dev, } static DEVICE_ATTR_RO(errors); -static ssize_t max_tokens_show(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t max_read_buffers_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct idxd_device *idxd = confdev_to_idxd(dev); return sysfs_emit(buf, "%u\n", idxd->max_rdbufs); } -static DEVICE_ATTR_RO(max_tokens); -static ssize_t token_limit_show(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t max_tokens_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + dev_warn_once(dev, "attribute deprecated, see max_read_buffers.\n"); + return max_read_buffers_show(dev, attr, buf); +} + +static DEVICE_ATTR_RO(max_tokens); /* deprecated */ +static DEVICE_ATTR_RO(max_read_buffers); + +static ssize_t read_buffer_limit_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct idxd_device *idxd = confdev_to_idxd(dev); return sysfs_emit(buf, "%u\n", idxd->rdbuf_limit); } -static ssize_t token_limit_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t token_limit_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + dev_warn_once(dev, "attribute deprecated, see read_buffer_limit.\n"); + return read_buffer_limit_show(dev, attr, buf); +} + +static ssize_t read_buffer_limit_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { struct idxd_device *idxd = confdev_to_idxd(dev); unsigned long val; @@ -1236,7 +1315,17 @@ static ssize_t token_limit_store(struct device *dev, idxd->rdbuf_limit = val; return count; } -static DEVICE_ATTR_RW(token_limit); + +static ssize_t token_limit_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + dev_warn_once(dev, "attribute deprecated, see read_buffer_limit\n"); + return read_buffer_limit_store(dev, attr, buf, count); +} + +static DEVICE_ATTR_RW(token_limit); /* deprecated */ +static DEVICE_ATTR_RW(read_buffer_limit); static ssize_t cdev_major_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -1282,7 +1371,9 @@ static struct attribute *idxd_device_attributes[] = { &dev_attr_state.attr, &dev_attr_errors.attr, &dev_attr_max_tokens.attr, + &dev_attr_max_read_buffers.attr, &dev_attr_token_limit.attr, + &dev_attr_read_buffer_limit.attr, &dev_attr_cdev_major.attr, &dev_attr_cmd_status.attr, NULL, -- cgit v1.2.3