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* [tip: timers/core] posix-cpu-timers: cpu_clock_sample_group() no longer needs siglock
@ 2020-02-29 20:49 tip-bot2 for Eric W. Biederman
  0 siblings, 0 replies; 2+ messages in thread
From: tip-bot2 for Eric W. Biederman @ 2020-02-29 20:49 UTC (permalink / raw)
  To: linux-tip-commits; +Cc: Eric W. Biederman, Thomas Gleixner, x86, LKML

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     6d022b20c011a75df24d2be90d22769d1d4461d0
Gitweb:        https://git.kernel.org/tip/6d022b20c011a75df24d2be90d22769d1d4461d0
Author:        Eric W. Biederman <ebiederm@xmission.com>
AuthorDate:    Fri, 28 Feb 2020 11:08:45 -06:00
Committer:     Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Sat, 29 Feb 2020 21:44:45 +01:00

posix-cpu-timers: cpu_clock_sample_group() no longer needs siglock

As of e78c3496790e ("time, signal: Protect resource use statistics with
seqlock") cpu_clock_sample_group() no longer needs siglock protection so
remove the stale comment.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

---
 kernel/time/posix-cpu-timers.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index 8ff6da7..46cc188 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -336,9 +336,7 @@ static void __thread_group_cputime(struct task_struct *tsk, u64 *samples)
 /*
  * Sample a process (thread group) clock for the given task clkid. If the
  * group's cputime accounting is already enabled, read the atomic
- * store. Otherwise a full update is required.  Task's sighand lock must be
- * held to protect the task traversal on a full update. clkid is already
- * validated.
+ * store. Otherwise a full update is required.  clkid is already validated.
  */
 static u64 cpu_clock_sample_group(const clockid_t clkid, struct task_struct *p,
 				  bool start)

^ permalink raw reply related	[flat|nested] 2+ messages in thread
* [PATCH 1/5] posix-cpu-timers: cpu_clock_sample_group no longer needs siglock
@ 2020-02-28 17:08 Eric W. Biederman
  2020-03-01 10:27 ` [tip: timers/core] posix-cpu-timers: cpu_clock_sample_group() " tip-bot2 for Eric W. Biederman
  0 siblings, 1 reply; 2+ messages in thread
From: Eric W. Biederman @ 2020-02-28 17:08 UTC (permalink / raw)
  To: linux-kernel; +Cc: Oleg Nesterov, Thomas Gleixner


As of e78c3496790e ("time, signal: Protect resource use statistics
with seqlock") cpu_clock_sample_group no longers needs siglock
protection so remove the stale comment.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
 kernel/time/posix-cpu-timers.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index 8ff6da77a01f..46cc188bf5ab 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -336,9 +336,7 @@ static void __thread_group_cputime(struct task_struct *tsk, u64 *samples)
 /*
  * Sample a process (thread group) clock for the given task clkid. If the
  * group's cputime accounting is already enabled, read the atomic
- * store. Otherwise a full update is required.  Task's sighand lock must be
- * held to protect the task traversal on a full update. clkid is already
- * validated.
+ * store. Otherwise a full update is required.  clkid is already validated.
  */
 static u64 cpu_clock_sample_group(const clockid_t clkid, struct task_struct *p,
 				  bool start)
-- 
2.25.0


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