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2020-01-28Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-3/+3
Pull scheduler updates from Ingo Molnar: "These were the main changes in this cycle: - More -rt motivated separation of CONFIG_PREEMPT and CONFIG_PREEMPTION. - Add more low level scheduling topology sanity checks and warnings to filter out nonsensical topologies that break scheduling. - Extend uclamp constraints to influence wakeup CPU placement - Make the RT scheduler more aware of asymmetric topologies and CPU capacities, via uclamp metrics, if CONFIG_UCLAMP_TASK=y - Make idle CPU selection more consistent - Various fixes, smaller cleanups, updates and enhancements - please see the git log for details" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (58 commits) sched/fair: Define sched_idle_cpu() only for SMP configurations sched/topology: Assert non-NUMA topology masks don't (partially) overlap idle: fix spelling mistake "iterrupts" -> "interrupts" sched/fair: Remove redundant call to cpufreq_update_util() sched/psi: create /proc/pressure and /proc/pressure/{io|memory|cpu} only when psi enabled sched/fair: Fix sgc->{min,max}_capacity calculation for SD_OVERLAP sched/fair: calculate delta runnable load only when it's needed sched/cputime: move rq parameter in irqtime_account_process_tick stop_machine: Make stop_cpus() static sched/debug: Reset watchdog on all CPUs while processing sysrq-t sched/core: Fix size of rq::uclamp initialization sched/uclamp: Fix a bug in propagating uclamp value in new cgroups sched/fair: Load balance aggressively for SCHED_IDLE CPUs sched/fair : Improve update_sd_pick_busiest for spare capacity case watchdog: Remove soft_lockup_hrtimer_cnt and related code sched/rt: Make RT capacity-aware sched/fair: Make EAS wakeup placement consider uclamp restrictions sched/fair: Make task_fits_capacity() consider uclamp restrictions sched/uclamp: Rename uclamp_util_with() into uclamp_rq_util_with() sched/uclamp: Make uclamp util helpers use and return UL values ...
2020-01-04hexagon: parenthesize registers in asm predicatesNick Desaulniers1-1/+1
Hexagon requires that register predicates in assembly be parenthesized. Link: https://github.com/ClangBuiltLinux/linux/issues/754 Link: http://lkml.kernel.org/r/20191209222956.239798-3-ndesaulniers@google.com Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Suggested-by: Sid Manning <sidneym@codeaurora.org> Acked-by: Brian Cain <bcain@codeaurora.org> Cc: Lee Jones <lee.jones@linaro.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Tuowen Zhao <ztuowen@gmail.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Alexios Zavras <alexios.zavras@intel.com> Cc: Allison Randal <allison@lohutok.net> Cc: Will Deacon <will@kernel.org> Cc: Richard Fontana <rfontana@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-12-08sched/rt, hexagon: Use CONFIG_PREEMPTIONThomas Gleixner1-3/+3
CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by CONFIG_PREEMPT_RT. Both PREEMPT and PREEMPT_RT require the same functionality which today depends on CONFIG_PREEMPT. Switch the entry code over to use CONFIG_PREEMPTION. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-hexagon@vger.kernel.org Link: https://lore.kernel.org/r/20191015191821.11479-9-bigeasy@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267Thomas Gleixner1-14/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 and only version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 94 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141334.043630402@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-07Hexagon: fix register used to call do_work_pendingRichard Kuo1-6/+6
ABI v2 callee saves start at R24. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: update copyright datesRichard Kuo1-1/+1
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: fix up int enable/disable at ret_from_forkRichard Kuo1-2/+11
Check return coming out of check_work_pending, and if copy_thread passed us a function in r24, call it. Based on feedback from Al Viro. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add support for single-stepping (v4+)Richard Kuo1-0/+3
Hardware single-step is only available on v4 and later architectures. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: Signal and return path fixesRichard Kuo1-52/+35
This fixes the return value of sigreturn and moves the work pending check into a c routine for readability and fixes the loop for multiple pending signals. Based on feedback from Al Viro. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add support for new v4+ registersRichard Kuo1-43/+168
Add support for a couple new v4+ registers, along with newer save/restore pt_regs. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2012-11-16Merge branch 'arch-frv' into no-rebasesAl Viro1-1/+1
2012-10-23hexagon: kernel_thread()/kernel_execve() conversionAl Viro1-0/+4
introduce sane current_pt_regs(), use it in syscalls where needed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-18Hexagon: Copyright marking changesRichard Kuo1-1/+1
Code Aurora Forum (CAF) is becoming a part of Linux Foundation Labs. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2011-11-01Hexagon: Add hypervisor interfaceRichard Kuo1-0/+269
Signed-off-by: Richard Kuo <rkuo@codeaurora.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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