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Message-ID: <168597770779.404.11242027713171629061.tip-bot2@tip-bot2>
Date:   Mon, 05 Jun 2023 15:08:27 -0000
From:   "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Frederic Weisbecker <frederic@...nel.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: timers/core] posix-timers: Document nanosleep() details

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

Commit-ID:     13da885685d6ae339f2924d3c8a1f4fe16a904cc
Gitweb:        https://git.kernel.org/tip/13da885685d6ae339f2924d3c8a1f4fe16a904cc
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Tue, 25 Apr 2023 20:49:17 +02:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Mon, 05 Jun 2023 17:03:38 +02:00

posix-timers: Document nanosleep() details

The descriptions for common_nsleep() is wrong and common_nsleep_timens()
lacks any form of comment.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Frederic Weisbecker <frederic@...nel.org>
Link: https://lore.kernel.org/r/20230425183313.567072835@linutronix.de

---
 kernel/time/posix-timers.c |  9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 9d99d4b..9ce13c9 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1370,7 +1370,7 @@ SYSCALL_DEFINE2(clock_getres_time32, clockid_t, which_clock,
 #endif
 
 /*
- * nanosleep for monotonic and realtime clocks
+ * sys_clock_nanosleep() for CLOCK_REALTIME and CLOCK_TAI
  */
 static int common_nsleep(const clockid_t which_clock, int flags,
 			 const struct timespec64 *rqtp)
@@ -1382,8 +1382,13 @@ static int common_nsleep(const clockid_t which_clock, int flags,
 				 which_clock);
 }
 
+/*
+ * sys_clock_nanosleep() for CLOCK_MONOTONIC and CLOCK_BOOTTIME
+ *
+ * Absolute nanosleeps for these clocks are time-namespace adjusted.
+ */
 static int common_nsleep_timens(const clockid_t which_clock, int flags,
-			 const struct timespec64 *rqtp)
+				const struct timespec64 *rqtp)
 {
 	ktime_t texp = timespec64_to_ktime(*rqtp);
 

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