From: Sasha Levin <levinsasha928@gmail.com>
To: viro@zeniv.linux.org.uk, rostedt@goodmis.org, fweisbec@gmail.com,
mingo@redhat.com, a.p.zijlstra@chello.nl, paulus@samba.org,
acme@ghostprotocols.net, james.l.morris@oracle.com,
ebiederm@xmission.com, akpm@linux-foundation.org,
tglx@linutronix.de
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-security-module@vger.kernel.org,
Sasha Levin <levinsasha928@gmail.com>
Subject: [PATCH 09/14] perf,sysctl: remove proc input checks out of sysctl handlers
Date: Sun, 29 Apr 2012 08:45:32 +0200 [thread overview]
Message-ID: <1335681937-3715-9-git-send-email-levinsasha928@gmail.com> (raw)
In-Reply-To: <1335681937-3715-1-git-send-email-levinsasha928@gmail.com>
Simplify sysctl handler by removing user input checks and using the callback
provided by the sysctl table.
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
---
include/linux/perf_event.h | 4 +---
kernel/events/core.c | 9 +--------
kernel/sysctl.c | 3 ++-
3 files changed, 4 insertions(+), 12 deletions(-)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index ddbb6a9..24c3a54 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1244,9 +1244,7 @@ extern int sysctl_perf_event_paranoid;
extern int sysctl_perf_event_mlock;
extern int sysctl_perf_event_sample_rate;
-extern int perf_proc_update_handler(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos);
+extern int perf_proc_update_handler(void);
static inline bool perf_paranoid_tracepoint_raw(void)
{
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 32cfc76..94d126f 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -167,15 +167,8 @@ int sysctl_perf_event_sample_rate __read_mostly = DEFAULT_MAX_SAMPLE_RATE;
static int max_samples_per_tick __read_mostly =
DIV_ROUND_UP(DEFAULT_MAX_SAMPLE_RATE, HZ);
-int perf_proc_update_handler(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos)
+int perf_proc_update_handler(void)
{
- int ret = proc_dointvec(table, write, buffer, lenp, ppos);
-
- if (ret || !write)
- return ret;
-
max_samples_per_tick = DIV_ROUND_UP(sysctl_perf_event_sample_rate, HZ);
return 0;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 16252c9..eef7508 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -977,7 +977,8 @@ static struct ctl_table kern_table[] = {
.data = &sysctl_perf_event_sample_rate,
.maxlen = sizeof(sysctl_perf_event_sample_rate),
.mode = 0644,
- .proc_handler = perf_proc_update_handler,
+ .proc_handler = proc_dointvec,
+ .callback = perf_proc_update_handler,
},
#endif
#ifdef CONFIG_KMEMCHECK
--
1.7.8.5
next prev parent reply other threads:[~2012-04-29 6:45 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-29 6:45 [PATCH 01/14] sysctl: provide callback for write into ctl_table entry Sasha Levin
2012-04-29 6:45 ` [PATCH 02/14] sched debug,sysctl: remove proc input checks out of sysctl handlers Sasha Levin
2012-04-29 6:45 ` [PATCH 03/14] sched rt,sysctl: " Sasha Levin
2012-04-30 2:32 ` Eric Paris
2012-04-29 6:45 ` [PATCH 04/14] ftrace,sysctl: " Sasha Levin
2012-04-29 6:45 ` [PATCH 05/14] sysrq,sysctl: " Sasha Levin
2012-04-29 6:45 ` [PATCH 06/14] watchdog,sysctl: remove unused external Sasha Levin
2012-04-29 6:45 ` [PATCH 07/14] watchdog,sysctl: remove proc input checks out of sysctl handlers Sasha Levin
2012-04-29 6:45 ` [PATCH 08/14] hung task,sysctl: " Sasha Levin
2012-04-29 6:45 ` Sasha Levin [this message]
2012-04-29 6:45 ` [PATCH 10/14] mm,sysctl: " Sasha Levin
2012-04-29 6:45 ` [PATCH 11/14] hugetlb,sysctl: " Sasha Levin
2012-04-29 6:45 ` [PATCH 12/14] mm compaction,sysctl: " Sasha Levin
2012-04-29 6:45 ` [PATCH 13/14] security,sysctl: " Sasha Levin
2012-04-30 2:28 ` Eric Paris
2012-04-29 6:45 ` [PATCH 14/14] fs,sysctl: " Sasha Levin
2012-04-29 8:22 ` [PATCH 01/14] sysctl: provide callback for write into ctl_table entry Eric W. Biederman
2012-04-29 12:07 ` Sasha Levin
2012-04-29 14:00 ` Steven Rostedt
2012-04-29 14:14 ` Sasha Levin
2012-04-29 19:57 ` Steven Rostedt
2012-04-30 2:52 ` Eric W. Biederman
2012-04-29 12:26 ` Sasha Levin
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