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Commit 4083014e authored by Dan Williams's avatar Dan Williams
Browse files

Merge branch 'for-5.1/nfit/ars' into libnvdimm-for-next 

Merge several updates to the ARS implementation. Highlights include:

* Support retrieval of short-ARS results if the ARS state is "requires
  continuation", and even if the "no_init_ars" module parameter is
  specified.
* Allow busy-polling of the kernel ARS state by allowing root to reset
  the exponential back-off timer.
* Filter potentially stale ARS results by tracking query-ARS relative to
  the previous start-ARS.
parents 6fd96ff5 78153dd4

Documentation/ABI/stable/sysfs-driver-mlxreg-io

+3 −3
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/ 
							cpld3_version



Date:		November 2018

KernelVersion:	4.21

KernelVersion:	5.0

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	These files show with which CPLD versions have been burned

		on LED board.
@@ -35,7 +35,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/ 
							jtag_enable



Date:		November 2018

KernelVersion:	4.21

KernelVersion:	5.0

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	These files enable and disable the access to the JTAG domain.

		By default access to the JTAG domain is disabled.
@@ -105,7 +105,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/ 
						reset_voltmon_upgrade_fail



Date:		November 2018

KernelVersion:	4.21

KernelVersion:	5.0

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	These files show the system reset cause, as following: ComEx

		power fail, reset from ComEx, system platform reset, reset

Documentation/admin-guide/kernel-parameters.txt

+3 −4
Original line number Diff line number Diff line
@@ -1696,12 +1696,11 @@ 
			By default, super page will be supported if Intel IOMMU

			has the capability. With this option, super page will

			not be supported.

		sm_off [Default Off]

			By default, scalable mode will be supported if the

		sm_on [Default Off]

			By default, scalable mode will be disabled even if the

			hardware advertises that it has support for the scalable

			mode translation. With this option set, scalable mode

			will not be used even on hardware which claims to support

			it.

			will be used on hardware which claims to support it.

		tboot_noforce [Default Off]

			Do not force the Intel IOMMU enabled under tboot.

			By default, tboot will force Intel IOMMU on, which

Documentation/devicetree/bindings/Makefile

+5 −1
Original line number Diff line number Diff line
@@ -17,7 +17,11 @@ extra-y += $(DT_TMP_SCHEMA) 
quiet_cmd_mk_schema = SCHEMA  $@

      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(filter-out FORCE, $^)



DT_DOCS = $(shell cd $(srctree)/$(src) && find * -name '*.yaml')

DT_DOCS = $(shell \

	cd $(srctree)/$(src) && \

	find * \( -name '*.yaml' ! -name $(DT_TMP_SCHEMA) \) \

	)



DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))



extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))

Documentation/devicetree/bindings/serio/olpc,ap-sp.txt

+0 −4
Original line number Diff line number Diff line
@@ -4,14 +4,10 @@ Required properties: 
- compatible : "olpc,ap-sp"

- reg : base address and length of SoC's WTM registers

- interrupts : SP-AP interrupt

- clocks : phandle + clock-specifier for the clock that drives the WTM

- clock-names:  should be "sp"



Example:

	ap-sp@d4290000 {

		compatible = "olpc,ap-sp";

		reg = <0xd4290000 0x1000>;

		interrupts = <40>;

		clocks = <&soc_clocks MMP2_CLK_SP>;

		clock-names = "sp";

	}

Documentation/sysctl/fs.txt

+16 −10
Original line number Diff line number Diff line
@@ -56,26 +56,32 @@ of any kernel data structures. 


dentry-state:



From linux/fs/dentry.c:

From linux/include/linux/dcache.h:

--------------------------------------------------------------

struct {

struct dentry_stat_t dentry_stat {

        int nr_dentry;

        int nr_unused;

        int age_limit;         /* age in seconds */

        int want_pages;        /* pages requested by system */

        int dummy[2];

} dentry_stat = {0, 0, 45, 0,};

        int nr_negative;       /* # of unused negative dentries */

        int dummy;             /* Reserved for future use */

};

--------------------------------------------------------------



Dentries are dynamically allocated and deallocated, and

nr_dentry seems to be 0 all the time. Hence it's safe to

assume that only nr_unused, age_limit and want_pages are

used. Nr_unused seems to be exactly what its name says.

Dentries are dynamically allocated and deallocated.



nr_dentry shows the total number of dentries allocated (active

+ unused). nr_unused shows the number of dentries that are not

actively used, but are saved in the LRU list for future reuse.



Age_limit is the age in seconds after which dcache entries

can be reclaimed when memory is short and want_pages is

nonzero when shrink_dcache_pages() has been called and the

dcache isn't pruned yet.



nr_negative shows the number of unused dentries that are also

negative dentries which do not mapped to actual files.



==============================================================



dquot-max & dquot-nr: