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sysctl: Add jiffies converter entries to the test module

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lib/test_sysctl.c covers proc_dointvec(), proc_douintvec(),
proc_dostring(), proc_do_large_bitmap() and proc_dou8vec_minmax(), but
none of the jiffies converters.  Their int paths report the sign
separately from the magnitude, which is a shape the existing entries do
not exercise at all.

Add one entry per affected int converter: proc_dointvec_jiffies(),
proc_dointvec_ms_jiffies() and proc_dointvec_userhz_jiffies().  Each is
seeded with HZ jiffies, which is one second in every converter's own
unit, so the three read back as 1, 1000 and 100 respectively.

Signed-off-by: Zhan Xusheng <zhanxusheng@xiaomi.com>
Reviewed-by: Bradley Morgan <brads@mainlining.org>
Tested-by: Bradley Morgan <brads@mainlining.org> # POWER10
Signed-off-by: Joel Granados <joel.granados@kernel.org>
This commit is contained in:
Zhan Xusheng 2026-09-23 22:49:36 +08:00 committed by Joel Granados
parent 6d8dc12317
commit a2c375789a
1 changed files with 31 additions and 0 deletions
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31
lib/test_sysctl.c
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@ -15,6 +15,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/printk.h>
@ -48,6 +49,10 @@ struct test_sysctl_data {
int boot_int;
int int_jiffies;
int int_ms_jiffies;
int int_userhz_jiffies;
unsigned int uint_0001;
char string_0001[65];
@ -67,6 +72,11 @@ static struct test_sysctl_data test_data = {
.boot_int = 0,
/* One second in each converter's unit; all three store HZ jiffies. */
.int_jiffies = HZ,
.int_ms_jiffies = HZ,
.int_userhz_jiffies = HZ,
.uint_0001 = 314,
.string_0001 = "(none)",
@ -113,6 +123,27 @@ static const struct ctl_table test_table[] = {
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
{
.procname = "int_jiffies",
.data = &test_data.int_jiffies,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "int_ms_jiffies",
.data = &test_data.int_ms_jiffies,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_ms_jiffies,
},
{
.procname = "int_userhz_jiffies",
.data = &test_data.int_userhz_jiffies,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_userhz_jiffies,
},
{
.procname = "uint_0001",
.data = &test_data.uint_0001,