* [PATCH v2 0/4] drivers: hv: mark some sysfs attribute as const
@ 2026-04-03 8:29 Thomas Weißschuh
2026-04-03 8:29 ` [PATCH v2 1/4] drivers: hv: mark chan_attr_ring_buffer " Thomas Weißschuh
` (3 more replies)
0 siblings, 4 replies; 8+ messages in thread
From: Thomas Weißschuh @ 2026-04-03 8:29 UTC (permalink / raw)
To: K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li
Cc: Michael Kelley, linux-hyperv, linux-kernel, Thomas Weißschuh
The sysfs attribute structures are never modified.
Mark them as const where possible.
This excludes the device attributes for now, as these will have their
own migration.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
Changes in v2:
- Mark missed four channels attributes as const (Michael Kelley)
- Link to v1: https://patch.msgid.link/20260402-sysfs-const-hv-v1-0-a467d6f7726e@weissschuh.net
---
Thomas Weißschuh (4):
drivers: hv: mark chan_attr_ring_buffer as const
drivers: hv: use ATTRIBUTE_GROUPS helper
drivers: hv: mark bus attributes as const
drivers: hv: mark channel attributes as const
drivers/hv/vmbus_drv.c | 51 ++++++++++++++++++++++++--------------------------
1 file changed, 24 insertions(+), 27 deletions(-)
---
base-commit: 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f
change-id: 20260331-sysfs-const-hv-cad05718c68a
Best regards,
--
Thomas Weißschuh <linux@weissschuh.net>
^ permalink raw reply [flat|nested] 8+ messages in thread* [PATCH v2 1/4] drivers: hv: mark chan_attr_ring_buffer as const 2026-04-03 8:29 [PATCH v2 0/4] drivers: hv: mark some sysfs attribute as const Thomas Weißschuh @ 2026-04-03 8:29 ` Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 2/4] drivers: hv: use ATTRIBUTE_GROUPS helper Thomas Weißschuh ` (2 subsequent siblings) 3 siblings, 0 replies; 8+ messages in thread From: Thomas Weißschuh @ 2026-04-03 8:29 UTC (permalink / raw) To: K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li Cc: Michael Kelley, linux-hyperv, linux-kernel, Thomas Weißschuh The structure is never modified, mark it as const. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Tested-by: Michael Kelley <mhklinux@outlook.com> --- drivers/hv/vmbus_drv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index bc4fc1951ae1..5f9b7cc9080c 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1959,7 +1959,7 @@ static int hv_mmap_ring_buffer_wrapper(struct file *filp, struct kobject *kobj, return channel->mmap_ring_buffer(channel, vma); } -static struct bin_attribute chan_attr_ring_buffer = { +static const struct bin_attribute chan_attr_ring_buffer = { .attr = { .name = "ring", .mode = 0600, @@ -1985,7 +1985,7 @@ static struct attribute *vmbus_chan_attrs[] = { NULL }; -static const struct bin_attribute *vmbus_chan_bin_attrs[] = { +static const struct bin_attribute *const vmbus_chan_bin_attrs[] = { &chan_attr_ring_buffer, NULL }; -- 2.53.0 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 2/4] drivers: hv: use ATTRIBUTE_GROUPS helper 2026-04-03 8:29 [PATCH v2 0/4] drivers: hv: mark some sysfs attribute as const Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 1/4] drivers: hv: mark chan_attr_ring_buffer " Thomas Weißschuh @ 2026-04-03 8:29 ` Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 3/4] drivers: hv: mark bus attributes as const Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 4/4] drivers: hv: mark channel " Thomas Weißschuh 3 siblings, 0 replies; 8+ messages in thread From: Thomas Weißschuh @ 2026-04-03 8:29 UTC (permalink / raw) To: K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li Cc: Michael Kelley, linux-hyperv, linux-kernel, Thomas Weißschuh The current logic is equivalent to the helper. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Tested-by: Michael Kelley <mhklinux@outlook.com> --- drivers/hv/vmbus_drv.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 5f9b7cc9080c..d41b39ab628d 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -645,10 +645,7 @@ static struct attribute *vmbus_bus_attrs[] = { &bus_attr_hibernation.attr, NULL, }; -static const struct attribute_group vmbus_bus_group = { - .attrs = vmbus_bus_attrs, -}; -__ATTRIBUTE_GROUPS(vmbus_bus); +ATTRIBUTE_GROUPS(vmbus_bus); /* * vmbus_uevent - add uevent for our device -- 2.53.0 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 3/4] drivers: hv: mark bus attributes as const 2026-04-03 8:29 [PATCH v2 0/4] drivers: hv: mark some sysfs attribute as const Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 1/4] drivers: hv: mark chan_attr_ring_buffer " Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 2/4] drivers: hv: use ATTRIBUTE_GROUPS helper Thomas Weißschuh @ 2026-04-03 8:29 ` Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 4/4] drivers: hv: mark channel " Thomas Weißschuh 3 siblings, 0 replies; 8+ messages in thread From: Thomas Weißschuh @ 2026-04-03 8:29 UTC (permalink / raw) To: K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li Cc: Michael Kelley, linux-hyperv, linux-kernel, Thomas Weißschuh This attribute is never modified, mark it as const. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Tested-by: Michael Kelley <mhklinux@outlook.com> --- drivers/hv/vmbus_drv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index d41b39ab628d..ecce6b72a2a2 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -639,9 +639,9 @@ static ssize_t hibernation_show(const struct bus_type *bus, char *buf) return sprintf(buf, "%d\n", !!hv_is_hibernation_supported()); } -static BUS_ATTR_RO(hibernation); +static const BUS_ATTR_RO(hibernation); -static struct attribute *vmbus_bus_attrs[] = { +static const struct attribute *const vmbus_bus_attrs[] = { &bus_attr_hibernation.attr, NULL, }; -- 2.53.0 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 4/4] drivers: hv: mark channel attributes as const 2026-04-03 8:29 [PATCH v2 0/4] drivers: hv: mark some sysfs attribute as const Thomas Weißschuh ` (2 preceding siblings ...) 2026-04-03 8:29 ` [PATCH v2 3/4] drivers: hv: mark bus attributes as const Thomas Weißschuh @ 2026-04-03 8:29 ` Thomas Weißschuh 2026-04-03 15:56 ` Michael Kelley 3 siblings, 1 reply; 8+ messages in thread From: Thomas Weißschuh @ 2026-04-03 8:29 UTC (permalink / raw) To: K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li Cc: Michael Kelley, linux-hyperv, linux-kernel, Thomas Weißschuh These attributes are never modified, mark them as const. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Tested-by: Michael Kelley <mhklinux@outlook.com> --- drivers/hv/vmbus_drv.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index ecce6b72a2a2..b33b85764c19 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1695,7 +1695,7 @@ static ssize_t out_mask_show(struct vmbus_channel *channel, char *buf) mutex_unlock(&rbi->ring_buffer_mutex); return ret; } -static VMBUS_CHAN_ATTR_RO(out_mask); +static const VMBUS_CHAN_ATTR_RO(out_mask); static ssize_t in_mask_show(struct vmbus_channel *channel, char *buf) { @@ -1712,7 +1712,7 @@ static ssize_t in_mask_show(struct vmbus_channel *channel, char *buf) mutex_unlock(&rbi->ring_buffer_mutex); return ret; } -static VMBUS_CHAN_ATTR_RO(in_mask); +static const VMBUS_CHAN_ATTR_RO(in_mask); static ssize_t read_avail_show(struct vmbus_channel *channel, char *buf) { @@ -1729,7 +1729,7 @@ static ssize_t read_avail_show(struct vmbus_channel *channel, char *buf) mutex_unlock(&rbi->ring_buffer_mutex); return ret; } -static VMBUS_CHAN_ATTR_RO(read_avail); +static const VMBUS_CHAN_ATTR_RO(read_avail); static ssize_t write_avail_show(struct vmbus_channel *channel, char *buf) { @@ -1746,7 +1746,7 @@ static ssize_t write_avail_show(struct vmbus_channel *channel, char *buf) mutex_unlock(&rbi->ring_buffer_mutex); return ret; } -static VMBUS_CHAN_ATTR_RO(write_avail); +static const VMBUS_CHAN_ATTR_RO(write_avail); static ssize_t target_cpu_show(struct vmbus_channel *channel, char *buf) { @@ -1864,7 +1864,7 @@ static ssize_t target_cpu_store(struct vmbus_channel *channel, return ret ?: count; } -static VMBUS_CHAN_ATTR(cpu, 0644, target_cpu_show, target_cpu_store); +static const VMBUS_CHAN_ATTR(cpu, 0644, target_cpu_show, target_cpu_store); static ssize_t channel_pending_show(struct vmbus_channel *channel, char *buf) @@ -1873,7 +1873,7 @@ static ssize_t channel_pending_show(struct vmbus_channel *channel, channel_pending(channel, vmbus_connection.monitor_pages[1])); } -static VMBUS_CHAN_ATTR(pending, 0444, channel_pending_show, NULL); +static const VMBUS_CHAN_ATTR(pending, 0444, channel_pending_show, NULL); static ssize_t channel_latency_show(struct vmbus_channel *channel, char *buf) @@ -1882,19 +1882,19 @@ static ssize_t channel_latency_show(struct vmbus_channel *channel, channel_latency(channel, vmbus_connection.monitor_pages[1])); } -static VMBUS_CHAN_ATTR(latency, 0444, channel_latency_show, NULL); +static const VMBUS_CHAN_ATTR(latency, 0444, channel_latency_show, NULL); static ssize_t channel_interrupts_show(struct vmbus_channel *channel, char *buf) { return sprintf(buf, "%llu\n", channel->interrupts); } -static VMBUS_CHAN_ATTR(interrupts, 0444, channel_interrupts_show, NULL); +static const VMBUS_CHAN_ATTR(interrupts, 0444, channel_interrupts_show, NULL); static ssize_t channel_events_show(struct vmbus_channel *channel, char *buf) { return sprintf(buf, "%llu\n", channel->sig_events); } -static VMBUS_CHAN_ATTR(events, 0444, channel_events_show, NULL); +static const VMBUS_CHAN_ATTR(events, 0444, channel_events_show, NULL); static ssize_t channel_intr_in_full_show(struct vmbus_channel *channel, char *buf) @@ -1902,7 +1902,7 @@ static ssize_t channel_intr_in_full_show(struct vmbus_channel *channel, return sprintf(buf, "%llu\n", (unsigned long long)channel->intr_in_full); } -static VMBUS_CHAN_ATTR(intr_in_full, 0444, channel_intr_in_full_show, NULL); +static const VMBUS_CHAN_ATTR(intr_in_full, 0444, channel_intr_in_full_show, NULL); static ssize_t channel_intr_out_empty_show(struct vmbus_channel *channel, char *buf) @@ -1910,7 +1910,7 @@ static ssize_t channel_intr_out_empty_show(struct vmbus_channel *channel, return sprintf(buf, "%llu\n", (unsigned long long)channel->intr_out_empty); } -static VMBUS_CHAN_ATTR(intr_out_empty, 0444, channel_intr_out_empty_show, NULL); +static const VMBUS_CHAN_ATTR(intr_out_empty, 0444, channel_intr_out_empty_show, NULL); static ssize_t channel_out_full_first_show(struct vmbus_channel *channel, char *buf) @@ -1918,7 +1918,7 @@ static ssize_t channel_out_full_first_show(struct vmbus_channel *channel, return sprintf(buf, "%llu\n", (unsigned long long)channel->out_full_first); } -static VMBUS_CHAN_ATTR(out_full_first, 0444, channel_out_full_first_show, NULL); +static const VMBUS_CHAN_ATTR(out_full_first, 0444, channel_out_full_first_show, NULL); static ssize_t channel_out_full_total_show(struct vmbus_channel *channel, char *buf) @@ -1926,14 +1926,14 @@ static ssize_t channel_out_full_total_show(struct vmbus_channel *channel, return sprintf(buf, "%llu\n", (unsigned long long)channel->out_full_total); } -static VMBUS_CHAN_ATTR(out_full_total, 0444, channel_out_full_total_show, NULL); +static const VMBUS_CHAN_ATTR(out_full_total, 0444, channel_out_full_total_show, NULL); static ssize_t subchannel_monitor_id_show(struct vmbus_channel *channel, char *buf) { return sprintf(buf, "%u\n", channel->offermsg.monitorid); } -static VMBUS_CHAN_ATTR(monitor_id, 0444, subchannel_monitor_id_show, NULL); +static const VMBUS_CHAN_ATTR(monitor_id, 0444, subchannel_monitor_id_show, NULL); static ssize_t subchannel_id_show(struct vmbus_channel *channel, char *buf) @@ -1941,7 +1941,7 @@ static ssize_t subchannel_id_show(struct vmbus_channel *channel, return sprintf(buf, "%u\n", channel->offermsg.offer.sub_channel_index); } -static VMBUS_CHAN_ATTR_RO(subchannel_id); +static const VMBUS_CHAN_ATTR_RO(subchannel_id); static int hv_mmap_ring_buffer_wrapper(struct file *filp, struct kobject *kobj, const struct bin_attribute *attr, @@ -1963,7 +1963,7 @@ static const struct bin_attribute chan_attr_ring_buffer = { }, .mmap = hv_mmap_ring_buffer_wrapper, }; -static struct attribute *vmbus_chan_attrs[] = { +static const struct attribute *const vmbus_chan_attrs[] = { &chan_attr_out_mask.attr, &chan_attr_in_mask.attr, &chan_attr_read_avail.attr, @@ -1992,7 +1992,7 @@ static const struct bin_attribute *const vmbus_chan_bin_attrs[] = { * each attribute, and returns 0 if an attribute is not visible. */ static umode_t vmbus_chan_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int idx) + const struct attribute *attr, int idx) { const struct vmbus_channel *channel = container_of(kobj, struct vmbus_channel, kobj); @@ -2030,9 +2030,9 @@ static size_t vmbus_chan_bin_size(struct kobject *kobj, } static const struct attribute_group vmbus_chan_group = { - .attrs = vmbus_chan_attrs, + .attrs_const = vmbus_chan_attrs, .bin_attrs = vmbus_chan_bin_attrs, - .is_visible = vmbus_chan_attr_is_visible, + .is_visible_const = vmbus_chan_attr_is_visible, .is_bin_visible = vmbus_chan_bin_attr_is_visible, .bin_size = vmbus_chan_bin_size, }; -- 2.53.0 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* RE: [PATCH v2 4/4] drivers: hv: mark channel attributes as const 2026-04-03 8:29 ` [PATCH v2 4/4] drivers: hv: mark channel " Thomas Weißschuh @ 2026-04-03 15:56 ` Michael Kelley 2026-04-03 16:15 ` Thomas Weißschuh 0 siblings, 1 reply; 8+ messages in thread From: Michael Kelley @ 2026-04-03 15:56 UTC (permalink / raw) To: Thomas Weißschuh, K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org From: Thomas Weißschuh <linux@weissschuh.net> Sent: Friday, April 3, 2026 1:29 AM > > These attributes are never modified, mark them as const. > > Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> > Tested-by: Michael Kelley <mhklinux@outlook.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> But take a look at this analysis from Sashiko AI: https://sashiko.dev/#/patchset/20260403-sysfs-const-hv-v2-0-8932ab8d41db%40weissschuh.net This seems to be a valid concern with your earlier commit 7dd9fdb4939b9 "sysfs: attribute_group: enable const variants of is_visible()". > --- > drivers/hv/vmbus_drv.c | 38 +++++++++++++++++++------------------- > 1 file changed, 19 insertions(+), 19 deletions(-) > > diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c > index ecce6b72a2a2..b33b85764c19 100644 > --- a/drivers/hv/vmbus_drv.c > +++ b/drivers/hv/vmbus_drv.c > @@ -1695,7 +1695,7 @@ static ssize_t out_mask_show(struct vmbus_channel > *channel, char *buf) > mutex_unlock(&rbi->ring_buffer_mutex); > return ret; > } > -static VMBUS_CHAN_ATTR_RO(out_mask); > +static const VMBUS_CHAN_ATTR_RO(out_mask); > > static ssize_t in_mask_show(struct vmbus_channel *channel, char *buf) > { > @@ -1712,7 +1712,7 @@ static ssize_t in_mask_show(struct vmbus_channel > *channel, char *buf) > mutex_unlock(&rbi->ring_buffer_mutex); > return ret; > } > -static VMBUS_CHAN_ATTR_RO(in_mask); > +static const VMBUS_CHAN_ATTR_RO(in_mask); > > static ssize_t read_avail_show(struct vmbus_channel *channel, char *buf) > { > @@ -1729,7 +1729,7 @@ static ssize_t read_avail_show(struct vmbus_channel > *channel, char *buf) > mutex_unlock(&rbi->ring_buffer_mutex); > return ret; > } > -static VMBUS_CHAN_ATTR_RO(read_avail); > +static const VMBUS_CHAN_ATTR_RO(read_avail); > > static ssize_t write_avail_show(struct vmbus_channel *channel, char *buf) > { > @@ -1746,7 +1746,7 @@ static ssize_t write_avail_show(struct vmbus_channel > *channel, char *buf) > mutex_unlock(&rbi->ring_buffer_mutex); > return ret; > } > -static VMBUS_CHAN_ATTR_RO(write_avail); > +static const VMBUS_CHAN_ATTR_RO(write_avail); > > static ssize_t target_cpu_show(struct vmbus_channel *channel, char *buf) > { > @@ -1864,7 +1864,7 @@ static ssize_t target_cpu_store(struct vmbus_channel > *channel, > > return ret ?: count; > } > -static VMBUS_CHAN_ATTR(cpu, 0644, target_cpu_show, target_cpu_store); > +static const VMBUS_CHAN_ATTR(cpu, 0644, target_cpu_show, target_cpu_store); > > static ssize_t channel_pending_show(struct vmbus_channel *channel, > char *buf) > @@ -1873,7 +1873,7 @@ static ssize_t channel_pending_show(struct vmbus_channel > *channel, > channel_pending(channel, > vmbus_connection.monitor_pages[1])); > } > -static VMBUS_CHAN_ATTR(pending, 0444, channel_pending_show, NULL); > +static const VMBUS_CHAN_ATTR(pending, 0444, channel_pending_show, NULL); > > static ssize_t channel_latency_show(struct vmbus_channel *channel, > char *buf) > @@ -1882,19 +1882,19 @@ static ssize_t channel_latency_show(struct > vmbus_channel *channel, > channel_latency(channel, > vmbus_connection.monitor_pages[1])); > } > -static VMBUS_CHAN_ATTR(latency, 0444, channel_latency_show, NULL); > +static const VMBUS_CHAN_ATTR(latency, 0444, channel_latency_show, NULL); > > static ssize_t channel_interrupts_show(struct vmbus_channel *channel, char *buf) > { > return sprintf(buf, "%llu\n", channel->interrupts); > } > -static VMBUS_CHAN_ATTR(interrupts, 0444, channel_interrupts_show, NULL); > +static const VMBUS_CHAN_ATTR(interrupts, 0444, channel_interrupts_show, NULL); > > static ssize_t channel_events_show(struct vmbus_channel *channel, char *buf) > { > return sprintf(buf, "%llu\n", channel->sig_events); > } > -static VMBUS_CHAN_ATTR(events, 0444, channel_events_show, NULL); > +static const VMBUS_CHAN_ATTR(events, 0444, channel_events_show, NULL); > > static ssize_t channel_intr_in_full_show(struct vmbus_channel *channel, > char *buf) > @@ -1902,7 +1902,7 @@ static ssize_t channel_intr_in_full_show(struct > vmbus_channel *channel, > return sprintf(buf, "%llu\n", > (unsigned long long)channel->intr_in_full); > } > -static VMBUS_CHAN_ATTR(intr_in_full, 0444, channel_intr_in_full_show, NULL); > +static const VMBUS_CHAN_ATTR(intr_in_full, 0444, channel_intr_in_full_show, NULL); > > static ssize_t channel_intr_out_empty_show(struct vmbus_channel *channel, > char *buf) > @@ -1910,7 +1910,7 @@ static ssize_t channel_intr_out_empty_show(struct > vmbus_channel *channel, > return sprintf(buf, "%llu\n", > (unsigned long long)channel->intr_out_empty); > } > -static VMBUS_CHAN_ATTR(intr_out_empty, 0444, channel_intr_out_empty_show, > NULL); > +static const VMBUS_CHAN_ATTR(intr_out_empty, 0444, > channel_intr_out_empty_show, NULL); > > static ssize_t channel_out_full_first_show(struct vmbus_channel *channel, > char *buf) > @@ -1918,7 +1918,7 @@ static ssize_t channel_out_full_first_show(struct > vmbus_channel *channel, > return sprintf(buf, "%llu\n", > (unsigned long long)channel->out_full_first); > } > -static VMBUS_CHAN_ATTR(out_full_first, 0444, channel_out_full_first_show, NULL); > +static const VMBUS_CHAN_ATTR(out_full_first, 0444, channel_out_full_first_show, > NULL); > > static ssize_t channel_out_full_total_show(struct vmbus_channel *channel, > char *buf) > @@ -1926,14 +1926,14 @@ static ssize_t channel_out_full_total_show(struct > vmbus_channel *channel, > return sprintf(buf, "%llu\n", > (unsigned long long)channel->out_full_total); > } > -static VMBUS_CHAN_ATTR(out_full_total, 0444, channel_out_full_total_show, NULL); > +static const VMBUS_CHAN_ATTR(out_full_total, 0444, channel_out_full_total_show, > NULL); > > static ssize_t subchannel_monitor_id_show(struct vmbus_channel *channel, > char *buf) > { > return sprintf(buf, "%u\n", channel->offermsg.monitorid); > } > -static VMBUS_CHAN_ATTR(monitor_id, 0444, subchannel_monitor_id_show, NULL); > +static const VMBUS_CHAN_ATTR(monitor_id, 0444, subchannel_monitor_id_show, > NULL); > > static ssize_t subchannel_id_show(struct vmbus_channel *channel, > char *buf) > @@ -1941,7 +1941,7 @@ static ssize_t subchannel_id_show(struct vmbus_channel > *channel, > return sprintf(buf, "%u\n", > channel->offermsg.offer.sub_channel_index); > } > -static VMBUS_CHAN_ATTR_RO(subchannel_id); > +static const VMBUS_CHAN_ATTR_RO(subchannel_id); > > static int hv_mmap_ring_buffer_wrapper(struct file *filp, struct kobject *kobj, > const struct bin_attribute *attr, > @@ -1963,7 +1963,7 @@ static const struct bin_attribute chan_attr_ring_buffer = { > }, > .mmap = hv_mmap_ring_buffer_wrapper, > }; > -static struct attribute *vmbus_chan_attrs[] = { > +static const struct attribute *const vmbus_chan_attrs[] = { > &chan_attr_out_mask.attr, > &chan_attr_in_mask.attr, > &chan_attr_read_avail.attr, > @@ -1992,7 +1992,7 @@ static const struct bin_attribute *const > vmbus_chan_bin_attrs[] = { > * each attribute, and returns 0 if an attribute is not visible. > */ > static umode_t vmbus_chan_attr_is_visible(struct kobject *kobj, > - struct attribute *attr, int idx) > + const struct attribute *attr, int idx) > { > const struct vmbus_channel *channel = > container_of(kobj, struct vmbus_channel, kobj); > @@ -2030,9 +2030,9 @@ static size_t vmbus_chan_bin_size(struct kobject *kobj, > } > > static const struct attribute_group vmbus_chan_group = { > - .attrs = vmbus_chan_attrs, > + .attrs_const = vmbus_chan_attrs, > .bin_attrs = vmbus_chan_bin_attrs, > - .is_visible = vmbus_chan_attr_is_visible, > + .is_visible_const = vmbus_chan_attr_is_visible, > .is_bin_visible = vmbus_chan_bin_attr_is_visible, > .bin_size = vmbus_chan_bin_size, > }; > > -- > 2.53.0 > ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v2 4/4] drivers: hv: mark channel attributes as const 2026-04-03 15:56 ` Michael Kelley @ 2026-04-03 16:15 ` Thomas Weißschuh 2026-04-03 17:46 ` Michael Kelley 0 siblings, 1 reply; 8+ messages in thread From: Thomas Weißschuh @ 2026-04-03 16:15 UTC (permalink / raw) To: Michael Kelley Cc: K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org On 2026-04-03 15:56:54+0000, Michael Kelley wrote: > From: Thomas Weißschuh <linux@weissschuh.net> Sent: Friday, April 3, 2026 1:29 AM > > > > These attributes are never modified, mark them as const. > > > > Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> > > Tested-by: Michael Kelley <mhklinux@outlook.com> > > Reviewed-by: Michael Kelley <mhklinux@outlook.com> Thanks. > But take a look at this analysis from Sashiko AI: > https://sashiko.dev/#/patchset/20260403-sysfs-const-hv-v2-0-8932ab8d41db%40weissschuh.net > > This seems to be a valid concern with your earlier commit 7dd9fdb4939b9 > "sysfs: attribute_group: enable const variants of is_visible()". Indeed, I missed this user of ->is_visible. I'll send a fix for that, but it shouldn't affect this series. Thomas ^ permalink raw reply [flat|nested] 8+ messages in thread
* RE: [PATCH v2 4/4] drivers: hv: mark channel attributes as const 2026-04-03 16:15 ` Thomas Weißschuh @ 2026-04-03 17:46 ` Michael Kelley 0 siblings, 0 replies; 8+ messages in thread From: Michael Kelley @ 2026-04-03 17:46 UTC (permalink / raw) To: Thomas Weißschuh, Michael Kelley Cc: K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org From: Thomas Weißschuh <linux@weissschuh.net> Sent: Friday, April 3, 2026 9:16 AM > > On 2026-04-03 15:56:54+0000, Michael Kelley wrote: > > From: Thomas Weißschuh <linux@weissschuh.net> Sent: Friday, April 3, 2026 1:29 AM > > > > > > These attributes are never modified, mark them as const. > > > > > > Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> > > > Tested-by: Michael Kelley <mhklinux@outlook.com> > > > > Reviewed-by: Michael Kelley <mhklinux@outlook.com> > > Thanks. > > > But take a look at this analysis from Sashiko AI: > > https://sashiko.dev/#/patchset/20260403-sysfs-const-hv-v2-0-8932ab8d41db%40weissschuh.net > > > > This seems to be a valid concern with your earlier commit 7dd9fdb4939b9 > > "sysfs: attribute_group: enable const variants of is_visible()". > > Indeed, I missed this user of ->is_visible. > I'll send a fix for that, but it shouldn't affect this series. > Agreed. ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2026-04-03 17:46 UTC | newest] Thread overview: 8+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2026-04-03 8:29 [PATCH v2 0/4] drivers: hv: mark some sysfs attribute as const Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 1/4] drivers: hv: mark chan_attr_ring_buffer " Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 2/4] drivers: hv: use ATTRIBUTE_GROUPS helper Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 3/4] drivers: hv: mark bus attributes as const Thomas Weißschuh 2026-04-03 8:29 ` [PATCH v2 4/4] drivers: hv: mark channel " Thomas Weißschuh 2026-04-03 15:56 ` Michael Kelley 2026-04-03 16:15 ` Thomas Weißschuh 2026-04-03 17:46 ` Michael Kelley
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