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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-07-18 13:29:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-07-18 13:29:25 -0700 |
| commit | 2fd4130e53db0958167510eddbca0f09dc858109 (patch) | |
| tree | 4f94446a2d3f86771ddd9176d478f098899d0599 /kernel/trace | |
| parent | db2451e78d5df51b8f926e31e343e74e6aafba9d (diff) | |
| parent | 7dc836187f7c6f70a82b4521503e9f9f96194581 (diff) | |
Merge tag 'trace-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
"Trivial updates for 6.11:
- Set rtla/osnoise default threshold to 1us from 5us
The 5us default was missing noise that people cared about. Changing
it to 1us makes it work as expected.
- Restructure how sched_switch prev_comm and next_comm was being saved
The prev_comm was being saved along with the other next fields, and
the next_comm was being saved along with the other prev fields.
This is just a cosmetic change.
- Have the allocation of pid_list use GFP_NOWAIT instead of GFP_KERNEL
The allocation can happen in irq_work context, but luckily, the
size was by default so large, it was never triggered. But in case
it ever is, use the NOWAIT allocation in the interrupt context.
- Fix some kernel doc errors"
* tag 'trace-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
trace/pid_list: Change gfp flags in pid_list_fill_irq()
tracing/sched: sched_switch: place prev_comm and next_comm in right order
rtla/osnoise: set the default threshold to 1us
tracing: Fix trace_pid_list_free() kernel-doc
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/pid_list.c | 5 | ||||
| -rw-r--r-- | kernel/trace/trace_osnoise.c | 4 |
2 files changed, 5 insertions, 4 deletions
diff --git a/kernel/trace/pid_list.c b/kernel/trace/pid_list.c index 95106d02b32d..4966e6bbdf6f 100644 --- a/kernel/trace/pid_list.c +++ b/kernel/trace/pid_list.c @@ -354,7 +354,7 @@ static void pid_list_refill_irq(struct irq_work *iwork) while (upper_count-- > 0) { union upper_chunk *chunk; - chunk = kzalloc(sizeof(*chunk), GFP_KERNEL); + chunk = kzalloc(sizeof(*chunk), GFP_NOWAIT); if (!chunk) break; *upper_next = chunk; @@ -365,7 +365,7 @@ static void pid_list_refill_irq(struct irq_work *iwork) while (lower_count-- > 0) { union lower_chunk *chunk; - chunk = kzalloc(sizeof(*chunk), GFP_KERNEL); + chunk = kzalloc(sizeof(*chunk), GFP_NOWAIT); if (!chunk) break; *lower_next = chunk; @@ -451,6 +451,7 @@ struct trace_pid_list *trace_pid_list_alloc(void) /** * trace_pid_list_free - Frees an allocated pid_list. + * @pid_list: The pid list to free. * * Frees the memory for a pid_list that was allocated. */ diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c index a8e28f9b9271..66a871553d4a 100644 --- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -1444,9 +1444,9 @@ static int run_osnoise(void) save_osn_sample_stats(osn_var, &s); /* - * if threshold is 0, use the default value of 5 us. + * if threshold is 0, use the default value of 1 us. */ - threshold = tracing_thresh ? : 5000; + threshold = tracing_thresh ? : 1000; /* * Apply PREEMPT and IRQ disabled options. |