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Message-Id: <20250218-jag-mv_ctltables-v1-7-cd3698ab8d29@kernel.org>
Date: Tue, 18 Feb 2025 10:56:23 +0100
From: joel granados <joel.granados@...nel.org>
To: Kees Cook <kees@...nel.org>, Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>, Mark Rutland <mark.rutland@....com>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
"Liang, Kan" <kan.liang@...ux.intel.com>,
"David S. Miller" <davem@...emloft.net>,
Andreas Larsson <andreas@...sler.com>, Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>, "Rafael J. Wysocki" <rafael@...nel.org>,
Len Brown <lenb@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-trace-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
sparclinux@...r.kernel.org, linux-s390@...r.kernel.org,
linux-acpi@...r.kernel.org, Joel Granados <joel.granados@...nel.org>
Subject: [PATCH 7/8] s390: mv s390 sysctls into their own file under
arch/s390 dir
Move s390 sysctls (spin_retry and userprocess_debug) into their own
files under arch/s390. We create two new sysctl tables
(2390_{fault,spin}_sysctl_table) which will be initialized with
arch_initcall placing them after their original place in proc_root_init.
This is part of a greater effort to move ctl tables into their
respective subsystems which will reduce the merge conflicts in
kerenel/sysctl.c.
Signed-off-by: joel granados <joel.granados@...nel.org>
---
arch/s390/lib/spinlock.c | 23 +++++++++++++++++++++++
arch/s390/mm/fault.c | 17 +++++++++++++++++
kernel/sysctl.c | 18 ------------------
3 files changed, 40 insertions(+), 18 deletions(-)
diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c
index a81a01c44927..4483fdc9d472 100644
--- a/arch/s390/lib/spinlock.c
+++ b/arch/s390/lib/spinlock.c
@@ -17,6 +17,10 @@
#include <asm/alternative.h>
#include <asm/asm.h>
+#if defined(CONFIG_SMP)
+#include <linux/sysctl.h>
+#endif
+
int spin_retry = -1;
static int __init spin_retry_init(void)
@@ -37,6 +41,25 @@ static int __init spin_retry_setup(char *str)
}
__setup("spin_retry=", spin_retry_setup);
+#if defined(CONFIG_SMP)
+static const struct ctl_table s390_spin_sysctl_table[] = {
+ {
+ .procname = "spin_retry",
+ .data = &spin_retry,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+};
+
+static int __init init_s390_spin_sysctls(void)
+{
+ register_sysctl_init("kernel", s390_spin_sysctl_table);
+ return 0;
+}
+arch_initcall(init_s390_spin_sysctls);
+#endif
+
struct spin_wait {
struct spin_wait *next, *prev;
int node_id;
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 9b681f74dccc..507da355bf68 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -175,6 +175,23 @@ static void dump_fault_info(struct pt_regs *regs)
int show_unhandled_signals = 1;
+static const struct ctl_table s390_fault_sysctl_table[] = {
+ {
+ .procname = "userprocess_debug",
+ .data = &show_unhandled_signals,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+};
+
+static int __init init_s390_fault_sysctls(void)
+{
+ register_sysctl_init("kernel", s390_fault_sysctl_table);
+ return 0;
+}
+arch_initcall(init_s390_fault_sysctls);
+
void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault)
{
static DEFINE_RATELIMIT_STATE(rs, DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST);
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b63d53e592d8..7f505f9ace87 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1702,15 +1702,6 @@ static const struct ctl_table kern_table[] = {
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_MAXOLDUID,
},
-#ifdef CONFIG_S390
- {
- .procname = "userprocess_debug",
- .data = &show_unhandled_signals,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
{
.procname = "ngroups_max",
.data = (void *)&ngroups_max,
@@ -1791,15 +1782,6 @@ static const struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec,
},
#endif
-#if defined(CONFIG_S390) && defined(CONFIG_SMP)
- {
- .procname = "spin_retry",
- .data = &spin_retry,
- .maxlen = sizeof (int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
#if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86)
{
.procname = "acpi_video_flags",
--
2.44.2
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