[linux,next] delayacct: update docs and fix some spelling errors

Commit Message

[e-mail] Dec. 13, 2024, 11:27 a.m. UTC

From: Yaxin Wang <[e-mail]>

Update delay-accounting.rst to include the 'delay max' in the output
of getdelays, and fix some spelling errors before.

Signed-off-by: Yaxin Wang <[e-mail]>
Signed-off-by: Jiang Kun <[e-mail]>
---
Some fixes according to:
https://lore.kernel.org/all/[e-mail]/
1.fix some spelling errors
2.update Documentation/accounting/delay-accounting.rst

 Documentation/accounting/delay-accounting.rst | 42 +++++++++----------
 kernel/delayacct.c                            |  2 +-
 2 files changed, 22 insertions(+), 22 deletions(-)

Patch

diff --git a/Documentation/accounting/delay-accounting.rst b/Documentation/accounting/delay-accounting.rst
index f61c01fc376e..8a0277428ccf 100644
--- a/Documentation/accounting/delay-accounting.rst
+++ b/Documentation/accounting/delay-accounting.rst
@@ -100,29 +100,29 @@  Get delays, since system boot, for pid 10::
 	# ./getdelays -d -p 10
 	(output similar to next case)

-Get sum of delays, since system boot, for all pids with tgid 5::
+Get sum and peak of delays, since system boot, for all pids with tgid 242::

-	# ./getdelays -d -t 5
+	bash-4.4# ./getdelays -d -t 242
 	print delayacct stats ON
-	TGID	5
-
-
-	CPU             count     real total  virtual total    delay total  delay average
-	                    8        7000000        6872122        3382277          0.423ms
-	IO              count    delay total  delay average
-                   0              0          0.000ms
-	SWAP            count    delay total  delay average
-                       0              0          0.000ms
-	RECLAIM         count    delay total  delay average
-                   0              0          0.000ms
-	THRASHING       count    delay total  delay average
-                       0              0          0.000ms
-	COMPACT         count    delay total  delay average
-                       0              0          0.000ms
-	WPCOPY          count    delay total  delay average
-                       0              0          0.000ms
-	IRQ             count    delay total  delay average
-                       0              0          0.000ms
+	TGID    242
+
+
+	CPU         count     real total  virtual total    delay total  delay average      delay max
+	              239      296000000      307724885        1127792          0.005ms     0.238382ms
+	IO          count    delay total  delay average      delay max
+	                0              0          0.000ms     0.000000ms
+	SWAP        count    delay total  delay average      delay max
+	                0              0          0.000ms     0.000000ms
+	RECLAIM     count    delay total  delay average      delay max
+	                0              0          0.000ms     0.000000ms
+	THRASHING   count    delay total  delay average      delay max
+	                0              0          0.000ms     0.000000ms
+	COMPACT     count    delay total  delay average      delay max
+	                0              0          0.000ms     0.000000ms
+	WPCOPY      count    delay total  delay average      delay max
+	              230       19100476          0.083ms     0.383822ms
+	IRQ         count    delay total  delay average      delay max
+	                0              0          0.000ms     0.000000ms

 Get IO accounting for pid 1, it works only with -p::

diff --git a/kernel/delayacct.c b/kernel/delayacct.c
index d64ad2a48b4f..23212a0c88e4 100644
--- a/kernel/delayacct.c
+++ b/kernel/delayacct.c
@@ -93,7 +93,7 @@  void __delayacct_tsk_init(struct task_struct *tsk)

 /*
  * Finish delay accounting for a statistic using its timestamps (@start),
- * accumalator (@total) and @count
+ * accumulator (@total) and @count
  */
 static void delayacct_end(raw_spinlock_t *lock, u64 *start, u64 *total, u32 *count, u64 *max)
 {