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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-22 12:00:20 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-22 12:00:20 -0800 |
commit | 70756b49be4ea8bf36a664322df6e7e89895fa60 (patch) | |
tree | fdbbf14342cf0124e08665e144678ccbbda6a1dc /Documentation/x86 | |
parent | bc009f9382bd0704273c9a0c1cbf72020bbbe1f7 (diff) | |
parent | cc29eadef921fe52aa58f32536a93d9ea0ca3eb7 (diff) | |
download | lwn-70756b49be4ea8bf36a664322df6e7e89895fa60.tar.gz lwn-70756b49be4ea8bf36a664322df6e7e89895fa60.zip |
Merge tag 'docs-6.3' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a moderately calm cycle for documentation; the significant
changes include:
- Some significant additions to the memory-management documentation
- Some improvements to navigation in the HTML-rendered docs
- More Spanish and Chinese translations
... and the usual set of typo fixes and such"
* tag 'docs-6.3' of git://git.lwn.net/linux: (68 commits)
Documentation/watchdog/hpwdt: Fix Format
Documentation/watchdog/hpwdt: Fix Reference
Documentation: core-api: padata: correct spelling
docs/mm: Physical Memory: correct spelling in reference to CONFIG_PAGE_EXTENSION
docs: Use HTML comments for the kernel-toc SPDX line
docs: Add more information to the HTML sidebar
Documentation: KVM: Update AMD memory encryption link
printk: Document that CONFIG_BOOT_PRINTK_DELAY required for boot_delay=
Documentation: userspace-api: correct spelling
Documentation: sparc: correct spelling
Documentation: driver-api: correct spelling
Documentation: admin-guide: correct spelling
docs: add workload-tracing document to admin-guide
docs/admin-guide/mm: remove useless markup
docs/mm: remove useless markup
docs/mm: Physical Memory: remove useless markup
docs/sp_SP: Add process magic-number translation
docs: ftrace: always use canonical ftrace path
Doc/damon: fix the data path error
dma-buf: Add "dma-buf" to title of documentation
...
Diffstat (limited to 'Documentation/x86')
-rw-r--r-- | Documentation/x86/resctrl.rst | 18 | ||||
-rw-r--r-- | Documentation/x86/x86_64/mm.rst | 2 |
2 files changed, 10 insertions, 10 deletions
diff --git a/Documentation/x86/resctrl.rst b/Documentation/x86/resctrl.rst index 058257dc56c8..387ccbcb558f 100644 --- a/Documentation/x86/resctrl.rst +++ b/Documentation/x86/resctrl.rst @@ -751,12 +751,12 @@ how we can measure the latency in cycles of reading from this region and visualize this data with a histogram that is available if CONFIG_HIST_TRIGGERS is set:: - # :> /sys/kernel/debug/tracing/trace - # echo 'hist:keys=latency' > /sys/kernel/debug/tracing/events/resctrl/pseudo_lock_mem_latency/trigger - # echo 1 > /sys/kernel/debug/tracing/events/resctrl/pseudo_lock_mem_latency/enable + # :> /sys/kernel/tracing/trace + # echo 'hist:keys=latency' > /sys/kernel/tracing/events/resctrl/pseudo_lock_mem_latency/trigger + # echo 1 > /sys/kernel/tracing/events/resctrl/pseudo_lock_mem_latency/enable # echo 1 > /sys/kernel/debug/resctrl/newlock/pseudo_lock_measure - # echo 0 > /sys/kernel/debug/tracing/events/resctrl/pseudo_lock_mem_latency/enable - # cat /sys/kernel/debug/tracing/events/resctrl/pseudo_lock_mem_latency/hist + # echo 0 > /sys/kernel/tracing/events/resctrl/pseudo_lock_mem_latency/enable + # cat /sys/kernel/tracing/events/resctrl/pseudo_lock_mem_latency/hist # event histogram # @@ -785,11 +785,11 @@ cache of a platform. Here is how we can obtain details of the cache hits and misses using the platform's precision counters. :: - # :> /sys/kernel/debug/tracing/trace - # echo 1 > /sys/kernel/debug/tracing/events/resctrl/pseudo_lock_l2/enable + # :> /sys/kernel/tracing/trace + # echo 1 > /sys/kernel/tracing/events/resctrl/pseudo_lock_l2/enable # echo 2 > /sys/kernel/debug/resctrl/newlock/pseudo_lock_measure - # echo 0 > /sys/kernel/debug/tracing/events/resctrl/pseudo_lock_l2/enable - # cat /sys/kernel/debug/tracing/trace + # echo 0 > /sys/kernel/tracing/events/resctrl/pseudo_lock_l2/enable + # cat /sys/kernel/tracing/trace # tracer: nop # diff --git a/Documentation/x86/x86_64/mm.rst b/Documentation/x86/x86_64/mm.rst index 9798676bb0bf..35e5e18c83d0 100644 --- a/Documentation/x86/x86_64/mm.rst +++ b/Documentation/x86/x86_64/mm.rst @@ -140,7 +140,7 @@ The direct mapping covers all memory in the system up to the highest memory address (this means in some cases it can also include PCI memory holes). -We map EFI runtime services in the 'efi_pgd' PGD in a 64Gb large virtual +We map EFI runtime services in the 'efi_pgd' PGD in a 64GB large virtual memory window (this size is arbitrary, it can be raised later if needed). The mappings are not part of any other kernel PGD and are only available during EFI runtime calls. |