Hi Daniel, On Sun, Sep 16, 2018 at 10:22 PM, Daniel Drake <drake@xxxxxxxxxxxx> wrote: > Hi Suren > > On Fri, Sep 7, 2018 at 11:58 PM, Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote: >> Thanks for the new patchset! Backported to 4.9 and retested on ARMv8 8 >> code system running Android. Signals behave as expected reacting to >> memory pressure, no jumps in "total" counters that would indicate an >> overflow/underflow issues. Nicely done! > > Can you share your Linux v4.9 psi backport somewhere? > Absolutely. Let me figure out what's the best way to do share that and make sure they apply cleanly on official 4.9 (I was using vendor's tree for testing). Will need a day or so to get this done. In case you need them sooner, there were several "prerequisite" patches that I had to backport to make PSI backporting easier/possible. Following is the list as shown by "git log --oneline": PSI patches: ef94c067f360 psi: cgroup support 60081a7aeb0b psi: pressure stall information for CPU, memory, and IO acd2a16497e9 sched: introduce this_rq_lock_irq() f30268c29309 sched: sched.h: make rq locking and clock functions available in stats.h a2fd1c94b743 sched: loadavg: make calc_load_n() public 32a74dec4967 sched: loadavg: consolidate LOAD_INT, LOAD_FRAC, CALC_LOAD 8e3991dd1a73 delayacct: track delays from thrashing cache pages 4ae940e7e6ff mm: workingset: tell cache transitions from workingset thrashing e9ccd63399e0 mm: workingset: don't drop refault information prematurely Prerequisites: b5a58c778c54 workqueue: make workqueue available early during boot ae5f39ee13b5 sched/core: Add wrappers for lockdep_(un)pin_lock() 7276f98a72c1 sched/headers, delayacct: Move the 'struct task_delay_info' definition from <linux/sched.h> to <linux/delayacct.h> 287318d13688 mm: add PageWaiters indicating tasks are waiting for a page bit edfa64560aaa sched/headers: Remove <linux/sched.h> from <linux/sched/loadavg.h> f6b6ba853959 sched/headers: Move loadavg related definitions from <linux/sched.h> to <linux/sched/loadavg.h> 395b0a9f7aae sched/headers: Prepare for new header dependencies before moving code to <linux/sched/loadavg.h> PSI patches needed some adjustments but nothing really major. > Thanks > Daniel Thanks, Suren.
