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| author | Breno Leitao <leitao@debian.org> | 2026-08-05 07:52:36 -0700 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-08-10 11:47:20 -1000 |
| commit | a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 (patch) | |
| tree | 39f5b258386e1127d253d293194e9a2991bf3c34 /Documentation/ABI/testing/debugfs-pcie-ptm | |
| download | linux-stable-a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656.tar.gz linux-stable-a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656.zip | |
workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted
apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.
No functional change: only unbound workqueues reach apply_wqattrs_*()
today.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation/ABI/testing/debugfs-pcie-ptm')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-pcie-ptm | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-pcie-ptm b/Documentation/ABI/testing/debugfs-pcie-ptm new file mode 100644 index 000000000..602d41363 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-pcie-ptm @@ -0,0 +1,70 @@ +What: /sys/kernel/debug/pcie_ptm_*/local_clock +Date: May 2025 +Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +Description: + (RO) PTM local clock in nanoseconds. Applicable for both Root + Complex and Endpoint controllers. + +What: /sys/kernel/debug/pcie_ptm_*/master_clock +Date: May 2025 +Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +Description: + (RO) PTM master clock in nanoseconds. Applicable only for + Endpoint controllers. + +What: /sys/kernel/debug/pcie_ptm_*/t1 +Date: May 2025 +Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +Description: + (RO) PTM T1 timestamp in nanoseconds. Applicable only for + Endpoint controllers. + +What: /sys/kernel/debug/pcie_ptm_*/t2 +Date: May 2025 +Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +Description: + (RO) PTM T2 timestamp in nanoseconds. Applicable only for + Root Complex controllers. + +What: /sys/kernel/debug/pcie_ptm_*/t3 +Date: May 2025 +Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +Description: + (RO) PTM T3 timestamp in nanoseconds. Applicable only for + Root Complex controllers. + +What: /sys/kernel/debug/pcie_ptm_*/t4 +Date: May 2025 +Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +Description: + (RO) PTM T4 timestamp in nanoseconds. Applicable only for + Endpoint controllers. + +What: /sys/kernel/debug/pcie_ptm_*/context_update +Date: May 2025 +Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +Description: + (RW) Control the PTM context update mode. Applicable only for + Endpoint controllers. + + Following values are supported: + + * auto = PTM context auto update trigger for every 10ms + + * manual = PTM context manual update. Writing 'manual' to this + file triggers PTM context update (default) + +What: /sys/kernel/debug/pcie_ptm_*/context_valid +Date: May 2025 +Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +Description: + (RW) Control the PTM context validity (local clock timing). + Applicable only for Root Complex controllers. PTM context is + invalidated by hardware if the Root Complex enters low power + mode or changes link frequency. + + Following values are supported: + + * 0 = PTM context invalid (default) + + * 1 = PTM context valid |