SUNRPC: receive buffer size estimation values almost never change

Avoid unnecessary cache sloshing by placing the buffer size
estimation update logic behind an atomic bit flag.

The size of GSS info

SUNRPC: receive buffer size estimation values almost never change

Avoid unnecessary cache sloshing by placing the buffer size
estimation update logic behind an atomic bit flag.

The size of GSS information included in each wrapped Reply does
not change during the lifetime of a GSS context. Therefore, the
au_rslack and au_ralign fields need to be updated only once after
establishing a fresh GSS credential.

Thus a slack size update must occur after a cred is created,
duplicated, renewed, or expires. I'm not sure I have this exactly
right. A trace point is introduced to track updates to these
variables to enable troubleshooting the problem if I missed a spot.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

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Merge branches 'for-5.7/upstream-fixes', 'for-5.8/apple', 'for-5.8/asus', 'for-5.8/core', 'for-5.8/intel-ish', 'for-5.8/logitech', 'for-5.8/mcp2221' and 'for-5.8/multitouch' into for-linus

Merge branch 'for-5.8' into for-linus

Merge branch 'timers/drivers/timer-ti' into timers/drivers/next

Merge branch 'kvm-amd-fixes' into HEAD

Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

Pull RCU updates from Paul McKenney:

1. Miscellaneous fixes.
2. kfree_rcu() updates.

Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

Pull RCU updates from Paul McKenney:

1. Miscellaneous fixes.
2. kfree_rcu() updates.
3. Remove scheduler locking restriction
4. RCU-tasks update, including addition of RCU Tasks Trace for
BPF use and RCU Tasks Rude. (This branch is on top of #3 due
to overlap of changed code.)
5. RCU CPU stall warning updates.
6. Torture-test updates.

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Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/core

Pull EFI changes for v5.8 from Ard Biesheuvel:

"- preliminary changes for RISC-V
- add support for setti

Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/core

Pull EFI changes for v5.8 from Ard Biesheuvel:

"- preliminary changes for RISC-V
- add support for setting the resolution on the EFI framebuffer
- simplify kernel image loading for arm64
- Move .bss into .data via the linker script instead of relying on symbol
annotations.
- Get rid of __pure getters to access global variables
- Clean up the config table matching arrays"

Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Merge branch 'topic/nhlt' into for-next

Merge NHLT init cleanup.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

Merge tag 'tegra-for-5.7-asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into asoc-5.7

ASoC: tegra: Fixes for v5.7-rc3

This contains a couple of fixes that are needed to properly

Merge tag 'tegra-for-5.7-asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into asoc-5.7

ASoC: tegra: Fixes for v5.7-rc3

This contains a couple of fixes that are needed to properly reconfigure
the audio clocks on older Tegra devices.

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Merge branch 'fixes-v5.7' into fixes

Merge tag 'kvm-s390-master-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-master

KVM: s390: Fix for 5.7 and maintainer update

- Silence false positive lockdep warnin

Merge tag 'kvm-s390-master-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-master

KVM: s390: Fix for 5.7 and maintainer update

- Silence false positive lockdep warning
- add Claudio as reviewer

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Merge drm/drm-next into drm-misc-next

Backmerging required to pull topic/phy-compliance.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-next into drm-intel-next-queued

Backmerging in order to pull "topic/phy-compliance".

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Merge v5.7-rc1 into drm-misc-fixes

Start the new drm-misc-fixes cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge tag 'v5.7-rc1' into locking/kcsan, to resolve conflicts and refresh

Resolve these conflicts:

arch/x86/Kconfig
arch/x86/kernel/Makefile

Do a minor "evil merge" to move the KCSAN entry up a

Merge tag 'v5.7-rc1' into locking/kcsan, to resolve conflicts and refresh

Resolve these conflicts:

arch/x86/Kconfig
arch/x86/kernel/Makefile

Do a minor "evil merge" to move the KCSAN entry up a bit by a few lines
in the Kconfig to reduce the probability of future conflicts.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Merge tag 'nfsd-5.7' of git://git.linux-nfs.org/projects/cel/cel-2.6

Pull nfsd updates from Chuck Lever:

- Fix EXCHANGE_ID response when NFSD runs in a container

- A battery of new static trace

Merge tag 'nfsd-5.7' of git://git.linux-nfs.org/projects/cel/cel-2.6

Pull nfsd updates from Chuck Lever:

- Fix EXCHANGE_ID response when NFSD runs in a container

- A battery of new static trace points

- Socket transports now use bio_vec to send Replies

- NFS/RDMA now supports filesystems with no .splice_read method

- Favor memcpy() over DMA mapping for small RPC/RDMA Replies

- Add pre-requisites for supporting multiple Write chunks

- Numerous minor fixes and clean-ups

[ Chuck is filling in for Bruce this time while he and his family settle
into a new house ]

* tag 'nfsd-5.7' of git://git.linux-nfs.org/projects/cel/cel-2.6: (39 commits)
svcrdma: Fix leak of transport addresses
SUNRPC: Fix a potential buffer overflow in 'svc_print_xprts()'
SUNRPC/cache: don't allow invalid entries to be flushed
nfsd: fsnotify on rmdir under nfsd/clients/
nfsd4: kill warnings on testing stateids with mismatched clientids
nfsd: remove read permission bit for ctl sysctl
NFSD: Fix NFS server build errors
sunrpc: Add tracing for cache events
SUNRPC/cache: Allow garbage collection of invalid cache entries
nfsd: export upcalls must not return ESTALE when mountd is down
nfsd: Add tracepoints for update of the expkey and export cache entries
nfsd: Add tracepoints for exp_find_key() and exp_get_by_name()
nfsd: Add tracing to nfsd_set_fh_dentry()
nfsd: Don't add locks to closed or closing open stateids
SUNRPC: Teach server to use xprt_sock_sendmsg for socket sends
SUNRPC: Refactor xs_sendpages()
svcrdma: Avoid DMA mapping small RPC Replies
svcrdma: Fix double sync of transport header buffer
svcrdma: Refactor chunk list encoders
SUNRPC: Add encoders for list item discriminators
...

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SUNRPC: Clean up: Replace dprintk and BUG_ON call sites in svcauth_gss.c

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

Merge drm-intel-next-queued into gvt-next

Backmerge to pull in
https://patchwork.freedesktop.org/patch/353621/?series=73544&rev=1

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

Merge tag 'v5.5-rc4' into locking/kcsan, to resolve conflicts

Conflicts:
init/main.c
lib/Kconfig.debug

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge branch 'next' into for-linus

Prepare input updates for 5.6 merge window.

Merge tag 'v5.5-rc5' into next

Sync up with mainline to get SPI "delay" API changes.

Merge drm/drm-next into drm-misc-next

Requested, and we need v5.5-rc1 backported as our current branch is still based on v5.4.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Merge tag 'v5.5-rc3' into sched/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'perf-urgent-for-mingo-5.5-20191216' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes:

perf top:

Arnaldo Carvalho de Melo:

- Do not

Merge tag 'perf-urgent-for-mingo-5.5-20191216' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes:

perf top:

Arnaldo Carvalho de Melo:

- Do not bail out when perf_env__read_cpuid() returns ENOSYS, which
has been reported happening on aarch64.

perf metricgroup:

Kajol Jain:

- Fix printing event names of metric group with multiple events

vendor events:

x86:

Ravi Bangoria:

- Fix Kernel_Utilization metric.

s390:

Ed Maste:

- Fix counter long description for DTLB1_GPAGE_WRITES and L1D_RO_EXCL_WRITES.

perf header:

Michael Petlan:

- Fix false warning when there are no duplicate cache entries

libtraceevent:

Sudip Mukherjee:

- Allow custom libdir path

API headers:

Arnaldo Carvalho de Melo:

- Sync linux/kvm.h with the kernel sources.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Merge remote-tracking branch 'torvalds/master' into perf/urgent

To pick up BPF fixes to allow a clean 'make -C tools/perf build-test':

7c3977d1e804 libbpf: Fix sym->st_value print on 32-bit arche

Merge remote-tracking branch 'torvalds/master' into perf/urgent

To pick up BPF fixes to allow a clean 'make -C tools/perf build-test':

7c3977d1e804 libbpf: Fix sym->st_value print on 32-bit arches
1fd450f99272 libbpf: Fix up generation of bpf_helper_defs.h

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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