[RFC PATCH 09/39] sysctl: store device sysctl bounds by value
From: wen . yang
Date: Wed Oct 28 2026 - 12:40:42 EST
From: Wen Yang <wen.yang@xxxxxxxxx>
Replace device bound pointers with numeric limits.
Suggested-by: Joel Granados <joel.granados@xxxxxxxxxx>
Signed-off-by: Wen Yang <wen.yang@xxxxxxxxx>
---
drivers/base/firmware_loader/fallback_table.c | 8 ++++----
drivers/gpu/drm/xe/xe_observation.c | 4 ++--
drivers/hv/hv_common.c | 4 ++--
drivers/infiniband/core/iwcm.c | 5 +++--
drivers/infiniband/core/ucma.c | 5 +++--
drivers/perf/arm_pmuv3.c | 4 ++--
drivers/perf/riscv_pmu_sbi.c | 4 ++--
drivers/scsi/scsi_sysctl.c | 5 +++--
drivers/tty/tty_io.c | 4 ++--
drivers/xen/balloon.c | 4 ++--
10 files changed, 25 insertions(+), 22 deletions(-)
diff --git a/drivers/base/firmware_loader/fallback_table.c b/drivers/base/firmware_loader/fallback_table.c
index c8afc501a8a4..72a47fcf5f45 100644
--- a/drivers/base/firmware_loader/fallback_table.c
+++ b/drivers/base/firmware_loader/fallback_table.c
@@ -32,8 +32,8 @@ static const struct ctl_table firmware_config_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_douintvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
+ .min = 0,
+ .max = 1,
},
{
.procname = "ignore_sysfs_fallback",
@@ -41,8 +41,8 @@ static const struct ctl_table firmware_config_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_douintvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
+ .min = 0,
+ .max = 1,
},
};
diff --git a/drivers/gpu/drm/xe/xe_observation.c b/drivers/gpu/drm/xe/xe_observation.c
index 39e05b9131a7..cd56d29d77fe 100644
--- a/drivers/gpu/drm/xe/xe_observation.c
+++ b/drivers/gpu/drm/xe/xe_observation.c
@@ -97,8 +97,8 @@ static const struct ctl_table observation_ctl_table[] = {
.maxlen = sizeof(xe_observation_paranoid),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
+ .min = 0,
+ .max = 1,
},
};
diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c
index 27b9b79d4f4c..1018c8a8e6bb 100644
--- a/drivers/hv/hv_common.c
+++ b/drivers/hv/hv_common.c
@@ -147,8 +147,8 @@ static const struct ctl_table hv_ctl_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE
+ .min = 0,
+ .max = 1
},
};
diff --git a/drivers/infiniband/core/iwcm.c b/drivers/infiniband/core/iwcm.c
index 4b05867dad89..0925996aa0fc 100644
--- a/drivers/infiniband/core/iwcm.c
+++ b/drivers/infiniband/core/iwcm.c
@@ -36,6 +36,7 @@
*
*/
#include <linux/dma-mapping.h>
+#include <linux/limits.h>
#include <linux/err.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
@@ -109,8 +110,8 @@ static struct ctl_table iwcm_ctl_table[] = {
.maxlen = sizeof(default_backlog),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_INT_MAX,
+ .min = 0,
+ .max = INT_MAX,
},
};
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index a15182f7a7c5..4c9f15846d18 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -31,6 +31,7 @@
*/
#include <linux/completion.h>
+#include <linux/limits.h>
#include <linux/file.h>
#include <linux/mutex.h>
#include <linux/poll.h>
@@ -70,8 +71,8 @@ static struct ctl_table ucma_ctl_table[] = {
.maxlen = sizeof max_backlog,
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_INT_MAX,
+ .min = 0,
+ .max = INT_MAX,
},
};
diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c
index 03359e078301..ec934ddf2f92 100644
--- a/drivers/perf/arm_pmuv3.c
+++ b/drivers/perf/arm_pmuv3.c
@@ -1462,8 +1462,8 @@ static const struct ctl_table armv8_pmu_sysctl_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = armv8pmu_proc_user_access_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
+ .min = 0,
+ .max = 1,
},
};
diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c
index 21a2078eab98..0e7d733a0fcf 100644
--- a/drivers/perf/riscv_pmu_sbi.c
+++ b/drivers/perf/riscv_pmu_sbi.c
@@ -1462,8 +1462,8 @@ static const struct ctl_table sbi_pmu_sysctl_table[] = {
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = riscv_pmu_proc_user_access_handler,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_TWO,
+ .min = 0,
+ .max = 2,
},
};
diff --git a/drivers/scsi/scsi_sysctl.c b/drivers/scsi/scsi_sysctl.c
index 055a03a83ad6..85aeffda94cd 100644
--- a/drivers/scsi/scsi_sysctl.c
+++ b/drivers/scsi/scsi_sysctl.c
@@ -4,6 +4,7 @@
*/
#include <linux/errno.h>
+#include <linux/limits.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sysctl.h>
@@ -18,8 +19,8 @@ static const struct ctl_table scsi_table[] = {
.maxlen = sizeof(scsi_logging_level),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_INT_MAX },
+ .min = 0,
+ .max = INT_MAX },
};
static struct ctl_table_header *scsi_table_header;
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 1a6c8a1bc764..2898c7bc774f 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -3632,8 +3632,8 @@ static const struct ctl_table tty_table[] = {
.maxlen = sizeof(tty_ldisc_autoload),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
+ .min = 0,
+ .max = 1,
},
};
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 373042fe501b..8883cfa90a8f 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -92,8 +92,8 @@ static const struct ctl_table balloon_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
- .extra1 = SYSCTL_ZERO,
- .extra2 = SYSCTL_ONE,
+ .min = 0,
+ .max = 1,
},
};
--
2.25.1