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authorLinus Torvalds <torvalds@linux-foundation.org>2025-05-31 19:12:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2025-05-31 19:12:53 -0700
commit7d4e49a77d9930c69751b9192448fda6ff9100f1 (patch)
treea041784a50f35185c77d235ba28037909c53fbd5 /kernel/delayacct.c
parent00c010e130e58301db2ea0cec1eadc931e1cb8cf (diff)
parent375700bab5b150e876e42d894a9a7470881f8a61 (diff)
downloadlinux-next-7d4e49a77d9930c69751b9192448fda6ff9100f1.tar.gz
linux-next-7d4e49a77d9930c69751b9192448fda6ff9100f1.zip
Merge tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton: - "hung_task: extend blocking task stacktrace dump to semaphore" from Lance Yang enhances the hung task detector. The detector presently dumps the blocking tasks's stack when it is blocked on a mutex. Lance's series extends this to semaphores - "nilfs2: improve sanity checks in dirty state propagation" from Wentao Liang addresses a couple of minor flaws in nilfs2 - "scripts/gdb: Fixes related to lx_per_cpu()" from Illia Ostapyshyn fixes a couple of issues in the gdb scripts - "Support kdump with LUKS encryption by reusing LUKS volume keys" from Coiby Xu addresses a usability problem with kdump. When the dump device is LUKS-encrypted, the kdump kernel may not have the keys to the encrypted filesystem. A full writeup of this is in the series [0/N] cover letter - "sysfs: add counters for lockups and stalls" from Max Kellermann adds /sys/kernel/hardlockup_count and /sys/kernel/hardlockup_count and /sys/kernel/rcu_stall_count - "fork: Page operation cleanups in the fork code" from Pasha Tatashin implements a number of code cleanups in fork.c - "scripts/gdb/symbols: determine KASLR offset on s390 during early boot" from Ilya Leoshkevich fixes some s390 issues in the gdb scripts * tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (67 commits) llist: make llist_add_batch() a static inline delayacct: remove redundant code and adjust indentation squashfs: add optional full compressed block caching crash_dump, nvme: select CONFIGFS_FS as built-in scripts/gdb/symbols: determine KASLR offset on s390 during early boot scripts/gdb/symbols: factor out pagination_off() scripts/gdb/symbols: factor out get_vmlinux() kernel/panic.c: format kernel-doc comments mailmap: update and consolidate Casey Connolly's name and email nilfs2: remove wbc->for_reclaim handling fork: define a local GFP_VMAP_STACK fork: check charging success before zeroing stack fork: clean-up naming of vm_stack/vm_struct variables in vmap stacks code fork: clean-up ifdef logic around stack allocation kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count kernel/watchdog: add /sys/kernel/{hard,soft}lockup_count x86/crash: make the page that stores the dm crypt keys inaccessible x86/crash: pass dm crypt keys to kdump kernel Revert "x86/mm: Remove unused __set_memory_prot()" crash_dump: retrieve dm crypt keys in kdump kernel ...
Diffstat (limited to 'kernel/delayacct.c')
-rw-r--r--kernel/delayacct.c51
1 files changed, 16 insertions, 35 deletions
diff --git a/kernel/delayacct.c b/kernel/delayacct.c
index eb63a021ac04..30e7912ebb0d 100644
--- a/kernel/delayacct.c
+++ b/kernel/delayacct.c
@@ -14,6 +14,15 @@
#include <linux/delayacct.h>
#include <linux/module.h>
+#define UPDATE_DELAY(type) \
+do { \
+ d->type##_delay_max = tsk->delays->type##_delay_max; \
+ d->type##_delay_min = tsk->delays->type##_delay_min; \
+ tmp = d->type##_delay_total + tsk->delays->type##_delay; \
+ d->type##_delay_total = (tmp < d->type##_delay_total) ? 0 : tmp; \
+ d->type##_count += tsk->delays->type##_count; \
+} while (0)
+
DEFINE_STATIC_KEY_FALSE(delayacct_key);
int delayacct_on __read_mostly; /* Delay accounting turned on/off */
struct kmem_cache *delayacct_cache;
@@ -173,41 +182,13 @@ int delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk)
/* zero XXX_total, non-zero XXX_count implies XXX stat overflowed */
raw_spin_lock_irqsave(&tsk->delays->lock, flags);
- d->blkio_delay_max = tsk->delays->blkio_delay_max;
- d->blkio_delay_min = tsk->delays->blkio_delay_min;
- tmp = d->blkio_delay_total + tsk->delays->blkio_delay;
- d->blkio_delay_total = (tmp < d->blkio_delay_total) ? 0 : tmp;
- d->swapin_delay_max = tsk->delays->swapin_delay_max;
- d->swapin_delay_min = tsk->delays->swapin_delay_min;
- tmp = d->swapin_delay_total + tsk->delays->swapin_delay;
- d->swapin_delay_total = (tmp < d->swapin_delay_total) ? 0 : tmp;
- d->freepages_delay_max = tsk->delays->freepages_delay_max;
- d->freepages_delay_min = tsk->delays->freepages_delay_min;
- tmp = d->freepages_delay_total + tsk->delays->freepages_delay;
- d->freepages_delay_total = (tmp < d->freepages_delay_total) ? 0 : tmp;
- d->thrashing_delay_max = tsk->delays->thrashing_delay_max;
- d->thrashing_delay_min = tsk->delays->thrashing_delay_min;
- tmp = d->thrashing_delay_total + tsk->delays->thrashing_delay;
- d->thrashing_delay_total = (tmp < d->thrashing_delay_total) ? 0 : tmp;
- d->compact_delay_max = tsk->delays->compact_delay_max;
- d->compact_delay_min = tsk->delays->compact_delay_min;
- tmp = d->compact_delay_total + tsk->delays->compact_delay;
- d->compact_delay_total = (tmp < d->compact_delay_total) ? 0 : tmp;
- d->wpcopy_delay_max = tsk->delays->wpcopy_delay_max;
- d->wpcopy_delay_min = tsk->delays->wpcopy_delay_min;
- tmp = d->wpcopy_delay_total + tsk->delays->wpcopy_delay;
- d->wpcopy_delay_total = (tmp < d->wpcopy_delay_total) ? 0 : tmp;
- d->irq_delay_max = tsk->delays->irq_delay_max;
- d->irq_delay_min = tsk->delays->irq_delay_min;
- tmp = d->irq_delay_total + tsk->delays->irq_delay;
- d->irq_delay_total = (tmp < d->irq_delay_total) ? 0 : tmp;
- d->blkio_count += tsk->delays->blkio_count;
- d->swapin_count += tsk->delays->swapin_count;
- d->freepages_count += tsk->delays->freepages_count;
- d->thrashing_count += tsk->delays->thrashing_count;
- d->compact_count += tsk->delays->compact_count;
- d->wpcopy_count += tsk->delays->wpcopy_count;
- d->irq_count += tsk->delays->irq_count;
+ UPDATE_DELAY(blkio);
+ UPDATE_DELAY(swapin);
+ UPDATE_DELAY(freepages);
+ UPDATE_DELAY(thrashing);
+ UPDATE_DELAY(compact);
+ UPDATE_DELAY(wpcopy);
+ UPDATE_DELAY(irq);
raw_spin_unlock_irqrestore(&tsk->delays->lock, flags);
return 0;