diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/arch_timer.txt | 5 | ||||
| -rw-r--r-- | Documentation/kbuild/kconfig-language.txt | 29 | ||||
| -rw-r--r-- | Documentation/kernel-parameters.txt | 19 | ||||
| -rw-r--r-- | Documentation/sysctl/kernel.txt | 8 | ||||
| -rw-r--r-- | Documentation/trace/ftrace.txt | 20 | ||||
| -rw-r--r-- | Documentation/x86/x86_64/boot-options.txt | 4 |
6 files changed, 58 insertions, 27 deletions
diff --git a/Documentation/devicetree/bindings/arm/arch_timer.txt b/Documentation/devicetree/bindings/arm/arch_timer.txt index ef5fbe9a77c7..ad440a2b8051 100644 --- a/Documentation/devicetree/bindings/arm/arch_timer.txt +++ b/Documentation/devicetree/bindings/arm/arch_timer.txt @@ -38,6 +38,11 @@ to deliver its interrupts via SPIs. architecturally-defined reset values. Only supported for 32-bit systems which follow the ARMv7 architected reset values. +- arm,no-tick-in-suspend : The main counter does not tick when the system is in + low-power system suspend on some SoCs. This behavior does not match the + Architecture Reference Manual's specification that the system counter "must + be implemented in an always-on power domain." + Example: diff --git a/Documentation/kbuild/kconfig-language.txt b/Documentation/kbuild/kconfig-language.txt index 069fcb3eef6e..262722d8867b 100644 --- a/Documentation/kbuild/kconfig-language.txt +++ b/Documentation/kbuild/kconfig-language.txt @@ -113,6 +113,34 @@ applicable everywhere (see syntax). That will limit the usefulness but on the other hand avoid the illegal configurations all over. +- weak reverse dependencies: "imply" <symbol> ["if" <expr>] + This is similar to "select" as it enforces a lower limit on another + symbol except that the "implied" symbol's value may still be set to n + from a direct dependency or with a visible prompt. + + Given the following example: + + config FOO + tristate + imply BAZ + + config BAZ + tristate + depends on BAR + + The following values are possible: + + FOO BAR BAZ's default choice for BAZ + --- --- ------------- -------------- + n y n N/m/y + m y m M/y/n + y y y Y/n + y n * N + + This is useful e.g. with multiple drivers that want to indicate their + ability to hook into a secondary subsystem while allowing the user to + configure that subsystem out without also having to unset these drivers. + - limiting menu display: "visible if" <expr> This attribute is only applicable to menu blocks, if the condition is false, the menu block is not displayed to the user (the symbols @@ -481,6 +509,7 @@ historical issues resolved through these different solutions. b) Match dependency semantics: b1) Swap all "select FOO" to "depends on FOO" or, b2) Swap all "depends on FOO" to "select FOO" + c) Consider the use of "imply" instead of "select" The resolution to a) can be tested with the sample Kconfig file Documentation/kbuild/Kconfig.recursion-issue-01 through the removal diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 26f0f92206d7..6c6141c76eaa 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1079,12 +1079,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. nopku [X86] Disable Memory Protection Keys CPU feature found in some Intel CPUs. - eagerfpu= [X86] - on enable eager fpu restore - off disable eager fpu restore - auto selects the default scheme, which automatically - enables eagerfpu restore for xsaveopt. - module.async_probe [KNL] Enable asynchronous probe on this module. @@ -1963,9 +1957,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. kmemcheck=2 (one-shot mode) Default: 2 (one-shot mode) - kstack=N [X86] Print N words from the kernel stack - in oops dumps. - kvm.ignore_msrs=[KVM] Ignore guest accesses to unhandled MSRs. Default is 0 (don't ignore, but inject #GP) @@ -2759,6 +2750,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. no-kvmapf [X86,KVM] Disable paravirtualized asynchronous page fault handling. + no-vmw-sched-clock + [X86,PV_OPS] Disable paravirtualized VMware scheduler + clock and use the default one. + no-steal-acc [X86,KVM] Disable paravirtualized steal time accounting. steal time is computed, but won't influence scheduler behaviour @@ -3829,12 +3824,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. shapers= [NET] Maximal number of shapers. - show_msr= [x86] show boot-time MSR settings - Format: { <integer> } - Show boot-time (BIOS-initialized) MSR settings. - The parameter means the number of CPUs to show, - for example 1 means boot CPU only. - simeth= [IA-64] simscsi= diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index ffab8b5caa60..065f18478c1c 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -40,7 +40,6 @@ show up in /proc/sys/kernel: - hung_task_warnings - kexec_load_disabled - kptr_restrict -- kstack_depth_to_print [ X86 only ] - l2cr [ PPC only ] - modprobe ==> Documentation/debugging-modules.txt - modules_disabled @@ -395,13 +394,6 @@ When kptr_restrict is set to (2), kernel pointers printed using ============================================================== -kstack_depth_to_print: (X86 only) - -Controls the number of words to print when dumping the raw -kernel stack. - -============================================================== - l2cr: (PPC only) This flag controls the L2 cache of G3 processor boards. If diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt index 185c39fea2a0..5596e2d71d6d 100644 --- a/Documentation/trace/ftrace.txt +++ b/Documentation/trace/ftrace.txt @@ -362,6 +362,26 @@ of ftrace. Here is a list of some of the key files: to correlate events across hypervisor/guest if tb_offset is known. + mono: This uses the fast monotonic clock (CLOCK_MONOTONIC) + which is monotonic and is subject to NTP rate adjustments. + + mono_raw: + This is the raw monotonic clock (CLOCK_MONOTONIC_RAW) + which is montonic but is not subject to any rate adjustments + and ticks at the same rate as the hardware clocksource. + + boot: This is the boot clock (CLOCK_BOOTTIME) and is based on the + fast monotonic clock, but also accounts for time spent in + suspend. Since the clock access is designed for use in + tracing in the suspend path, some side effects are possible + if clock is accessed after the suspend time is accounted before + the fast mono clock is updated. In this case, the clock update + appears to happen slightly sooner than it normally would have. + Also on 32-bit systems, it's possible that the 64-bit boot offset + sees a partial update. These effects are rare and post + processing should be able to handle them. See comments in the + ktime_get_boot_fast_ns() function for more information. + To set a clock, simply echo the clock name into this file. echo global > trace_clock diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt index 0965a71f9942..61b611e9eeaf 100644 --- a/Documentation/x86/x86_64/boot-options.txt +++ b/Documentation/x86/x86_64/boot-options.txt @@ -277,10 +277,6 @@ IOMMU (input/output memory management unit) space might stop working. Use this option if you have devices that are accessed from userspace directly on some PCI host bridge. -Debugging - - kstack=N Print N words from the kernel stack in oops dumps. - Miscellaneous nogbpages |