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Support restoring B/C OA counter config in RC6 WA BB #4
Description
So we can aim to leave RC6 enabled while capturing OA metrics, the i915 perf driver needs to support adding the the B/C counter configuration to the RC6 Workaround Batch Buffer.
Note: Gen 9 has an Errata where the RC6 WA BB is not always being executed, whereby the MUX config won't be restored. Userspace may need to be involved in recognising when the metrics configuration isn't correctly restored and request a re-configuration.
Activity
perf tools: tracepoint_error() can receive e=NULL, robustify it
mei: validate request value in client notify request ioctl
Merge branch 'mlx4-fixes'
usb: chipidea: otg: change workqueue ci_otg as freezable
dmaengine: at_xdmac: fix residue computation
net: stmmac: socfpga: Remove re-registration of reset controller
Merge branch 'ovs-notifications'
MIPS: Fix page table corruption on THP permission changes.
ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS
mei: me: disable driver on SPT SPS firmware
usb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase
tty/serial: at91: fix hardware handshake on Atmel platforms
arc: Implement arch-specific dma_map_ops.mmap
ARC: timer: rtc: implement read loop in "C" vs. inline asm
x86/cpu: Deal with broken firmware (VMWare/XEN)
122 remaining items
usbip: usbip_host: fix BUG: sleeping function called from invalid con…
KVM: PPC: Book3S HV: XIVE: Do not clear IRQ data of passthrough inter…
NFSv4.1: Again fix a race where CB_NOTIFY_LOCK fails to wake a waiter
NFSv4.1: Fix bug only first CB_NOTIFY_LOCK is handled
mac80211: mesh: fix RCU warning
Merge branch 'mlxsw-Various-fixes'
drm/msm: Use the correct dma_sync calls harder
net: rmnet: fix suspicious RCU usage
jbd2: fix data races at struct journal_head
usb: dwc3: gadget: Update chain bit correctly when using sg list
rtc/cmos: Protect rtc_lock from interrupts
perf/core: Only copy-to-user after completely unlocking all locks, v3.
rtc: cmos: Disable irq around direct invocation of cmos_interrupt()
powerpc/vdso: Fix incorrect CFI in gettimeofday.S
ice: fix crash when writing timestamp on RX rings