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authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>2024-11-11 12:16:33 +0100
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2024-11-11 12:16:33 +0100
commit5516200c466f92954551406ea641376963c43a92 (patch)
tree4d9814bad59490d0cde3ce014a8ae08e9a8672db /Documentation/admin-guide
parentmedia: platform: samsung: s5p-jpeg: Remove deadcode (diff)
parentLinux 6.12-rc7 (diff)
downloadlinux-5516200c466f92954551406ea641376963c43a92.tar.xz
linux-5516200c466f92954551406ea641376963c43a92.zip
Merge tag 'v6.12-rc7' into __tmp-hansg-linux-tags_media_atomisp_6_13_1
Linux 6.12-rc7 * tag 'v6.12-rc7': (1909 commits) Linux 6.12-rc7 filemap: Fix bounds checking in filemap_read() i2c: designware: do not hold SCL low when I2C_DYNAMIC_TAR_UPDATE is not set mailmap: add entry for Thorsten Blum ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove() signal: restore the override_rlimit logic fs/proc: fix compile warning about variable 'vmcore_mmap_ops' ucounts: fix counter leak in inc_rlimit_get_ucounts() selftests: hugetlb_dio: check for initial conditions to skip in the start mm: fix docs for the kernel parameter ``thp_anon=`` mm/damon/core: avoid overflow in damon_feed_loop_next_input() mm/damon/core: handle zero schemes apply interval mm/damon/core: handle zero {aggregation,ops_update} intervals mm/mlock: set the correct prev on failure objpool: fix to make percpu slot allocation more robust mm/page_alloc: keep track of free highatomic bcachefs: Fix UAF in __promote_alloc() error path bcachefs: Change OPT_STR max to be 1 less than the size of choices array bcachefs: btree_cache.freeable list fixes bcachefs: check the invalid parameter for perf test ...
Diffstat (limited to 'Documentation/admin-guide')
-rw-r--r--Documentation/admin-guide/LSM/ipe.rst7
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt2
-rw-r--r--Documentation/admin-guide/mm/transhuge.rst2
-rw-r--r--Documentation/admin-guide/pm/cpufreq.rst20
4 files changed, 17 insertions, 14 deletions
diff --git a/Documentation/admin-guide/LSM/ipe.rst b/Documentation/admin-guide/LSM/ipe.rst
index f38e641df0e9..f93a467db628 100644
--- a/Documentation/admin-guide/LSM/ipe.rst
+++ b/Documentation/admin-guide/LSM/ipe.rst
@@ -223,7 +223,10 @@ are signed through the PKCS#7 message format to enforce some level of
authorization of the policies (prohibiting an attacker from gaining
unconstrained root, and deploying an "allow all" policy). These
policies must be signed by a certificate that chains to the
-``SYSTEM_TRUSTED_KEYRING``. With openssl, the policy can be signed by::
+``SYSTEM_TRUSTED_KEYRING``, or to the secondary and/or platform keyrings if
+``CONFIG_IPE_POLICY_SIG_SECONDARY_KEYRING`` and/or
+``CONFIG_IPE_POLICY_SIG_PLATFORM_KEYRING`` are enabled, respectively.
+With openssl, the policy can be signed by::
openssl smime -sign \
-in "$MY_POLICY" \
@@ -266,7 +269,7 @@ in the kernel. This file is write-only and accepts a PKCS#7 signed
policy. Two checks will always be performed on this policy: First, the
``policy_names`` must match with the updated version and the existing
version. Second the updated policy must have a policy version greater than
-or equal to the currently-running version. This is to prevent rollback attacks.
+the currently-running version. This is to prevent rollback attacks.
The ``delete`` file is used to remove a policy that is no longer needed.
This file is write-only and accepts a value of ``1`` to delete the policy.
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 1518343bbe22..1666576acc0e 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -6688,7 +6688,7 @@
0: no polling (default)
thp_anon= [KNL]
- Format: <size>,<size>[KMG]:<state>;<size>-<size>[KMG]:<state>
+ Format: <size>[KMG],<size>[KMG]:<state>;<size>[KMG]-<size>[KMG]:<state>
state is one of "always", "madvise", "never" or "inherit".
Control the default behavior of the system with respect
to anonymous transparent hugepages.
diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst
index cfdd16a52e39..a1bb495eab59 100644
--- a/Documentation/admin-guide/mm/transhuge.rst
+++ b/Documentation/admin-guide/mm/transhuge.rst
@@ -303,7 +303,7 @@ control by passing the parameter ``transparent_hugepage=always`` or
kernel command line.
Alternatively, each supported anonymous THP size can be controlled by
-passing ``thp_anon=<size>,<size>[KMG]:<state>;<size>-<size>[KMG]:<state>``,
+passing ``thp_anon=<size>[KMG],<size>[KMG]:<state>;<size>[KMG]-<size>[KMG]:<state>``,
where ``<size>`` is the THP size (must be a power of 2 of PAGE_SIZE and
supported anonymous THP) and ``<state>`` is one of ``always``, ``madvise``,
``never`` or ``inherit``.
diff --git a/Documentation/admin-guide/pm/cpufreq.rst b/Documentation/admin-guide/pm/cpufreq.rst
index fe1be4ad88cb..a21369eba034 100644
--- a/Documentation/admin-guide/pm/cpufreq.rst
+++ b/Documentation/admin-guide/pm/cpufreq.rst
@@ -425,8 +425,8 @@ This governor exposes only one tunable:
``rate_limit_us``
Minimum time (in microseconds) that has to pass between two consecutive
- runs of governor computations (default: 1000 times the scaling driver's
- transition latency).
+ runs of governor computations (default: 1.5 times the scaling driver's
+ transition latency or the maximum 2ms).
The purpose of this tunable is to reduce the scheduler context overhead
of the governor which might be excessive without it.
@@ -474,17 +474,17 @@ This governor exposes the following tunables:
This is how often the governor's worker routine should run, in
microseconds.
- Typically, it is set to values of the order of 10000 (10 ms). Its
- default value is equal to the value of ``cpuinfo_transition_latency``
- for each policy this governor is attached to (but since the unit here
- is greater by 1000, this means that the time represented by
- ``sampling_rate`` is 1000 times greater than the transition latency by
- default).
+ Typically, it is set to values of the order of 2000 (2 ms). Its
+ default value is to add a 50% breathing room
+ to ``cpuinfo_transition_latency`` on each policy this governor is
+ attached to. The minimum is typically the length of two scheduler
+ ticks.
If this tunable is per-policy, the following shell command sets the time
- represented by it to be 750 times as high as the transition latency::
+ represented by it to be 1.5 times as high as the transition latency
+ (the default)::
- # echo `$(($(cat cpuinfo_transition_latency) * 750 / 1000)) > ondemand/sampling_rate
+ # echo `$(($(cat cpuinfo_transition_latency) * 3 / 2)) > ondemand/sampling_rate
``up_threshold``
If the estimated CPU load is above this value (in percent), the governor