Josh Hunt 44d3bbb6f5 perf/x86/intel: Restrict period on Nehalem ... We see our Nehalem machines reporting 'perfevents: irq loop stuck!' in some cases when using perf: perfevents: irq loop stuck! WARNING: CPU: 0 PID: 3485 at arch/x86/events/intel/core.c:2282 intel_pmu_handle_irq+0x37b/0x530 ... RIP: 0010:intel_pmu_handle_irq+0x37b/0x530 ... Call Trace: <NMI> ? perf_event_nmi_handler+0x2e/0x50 ? intel_pmu_save_and_restart+0x50/0x50 perf_event_nmi_handler+0x2e/0x50 nmi_handle+0x6e/0x120 default_do_nmi+0x3e/0x100 do_nmi+0x102/0x160 end_repeat_nmi+0x16/0x50 ... ? native_write_msr+0x6/0x20 ? native_write_msr+0x6/0x20 </NMI> intel_pmu_enable_event+0x1ce/0x1f0 x86_pmu_start+0x78/0xa0 x86_pmu_enable+0x252/0x310 __perf_event_task_sched_in+0x181/0x190 ? __switch_to_asm+0x41/0x70 ? __switch_to_asm+0x35/0x70 ? __switch_to_asm+0x41/0x70 ? __switch_to_asm+0x35/0x70 finish_task_switch+0x158/0x260 __schedule+0x2f6/0x840 ? hrtimer_start_range_ns+0x153/0x210 schedule+0x32/0x80 schedule_hrtimeout_range_clock+0x8a/0x100 ? hrtimer_init+0x120/0x120 ep_poll+0x2f7/0x3a0 ? wake_up_q+0x60/0x60 do_epoll_wait+0xa9/0xc0 __x64_sys_epoll_wait+0x1a/0x20 do_syscall_64+0x4e/0x110 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fdeb1e96c03 ... Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: acme@kernel.org Cc: Josh Hunt <johunt@akamai.com> Cc: bpuranda@akamai.com Cc: mingo@redhat.com Cc: jolsa@redhat.com Cc: tglx@linutronix.de Cc: namhyung@kernel.org Cc: alexander.shishkin@linux.intel.com Link: https://lkml.kernel.org/r/1566256411-18820-1-git-send-email-johunt@akamai.com		2019-08-30 14:27:47 +02:00
..
alpha	Merge branch 'akpm' (patches from Andrew)	2019-07-17 08:58:04 -07:00
arc	Merge branch 'akpm' (patches from Andrew)	2019-07-17 08:58:04 -07:00
arm	dma-mapping fixes for 5.3-rc	2019-08-24 20:00:11 -07:00
arm64	arm64 fixes:	2019-08-16 10:51:47 -07:00
c6x	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu	2019-07-10 21:42:03 -07:00
csky	treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers	2019-07-25 11:05:10 +02:00
h8300	h8300 update for 5.3	2019-07-17 09:36:38 -07:00
hexagon	hexagon: switch to generic version of pte allocation	2019-07-21 09:53:00 -07:00
ia64	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
m68k	arch: mark syscall number 435 reserved for clone3	2019-07-15 00:39:33 +02:00
microblaze	clone3-v5.3	2019-07-11 10:09:44 -07:00
mips	Wimplicit-fallthrough patches for 5.3-rc6	2019-08-22 11:26:10 -07:00
nds32	treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers	2019-07-25 11:05:10 +02:00
nios2	nios2 update for v5.3-rc1	2019-07-12 15:38:05 -07:00
openrisc	dma-mapping updates for Linux 5.3	2019-07-12 15:13:55 -07:00
parisc	parisc: fix compilation errrors	2019-08-24 19:48:42 -07:00
powerpc	dma-mapping fixes for 5.3-rc	2019-08-14 10:31:11 -07:00
riscv	riscv: Make __fstate_clean() work correctly.	2019-08-14 13:20:46 -07:00
s390	Bugfixes (arm and x86) and cleanups.	2019-08-09 15:46:29 -07:00
sh	sh: kernel: hw_breakpoint: Fix missing break in switch statement	2019-08-11 16:15:16 -05:00
sparc	treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers	2019-07-25 11:05:10 +02:00
um	um: fix time travel mode	2019-08-23 00:39:53 +02:00
unicore32	Kconfig updates for v5.3	2019-07-12 16:06:27 -07:00
x86	perf/x86/intel: Restrict period on Nehalem	2019-08-30 14:27:47 +02:00
xtensa	xtensa: add missing isync to the cpu_reset TLB code	2019-08-12 15:05:48 -07:00
.gitignore
Kconfig	Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-07-20 10:33:44 -07:00