From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Josh Hunt <johunt@akamai.com>,
Peter Zijlstra <peterz@infradead.org>,
acme@kernel.org, bpuranda@akamai.com, mingo@redhat.com,
jolsa@redhat.com, tglx@linutronix.de, namhyung@kernel.org,
alexander.shishkin@linux.intel.com,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.9 23/27] perf/x86/intel: Restrict period on Nehalem
Date: Wed, 4 Sep 2019 12:02:16 -0400 [thread overview]
Message-ID: <20190904160220.4545-23-sashal@kernel.org> (raw)
In-Reply-To: <20190904160220.4545-1-sashal@kernel.org>
From: Josh Hunt <johunt@akamai.com>
[ Upstream commit 44d3bbb6f5e501b873218142fe08cdf62a4ac1f3 ]
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
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/x86/events/intel/core.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index e98e238d37750..55e362f9dbfaa 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -3075,6 +3075,11 @@ static u64 bdw_limit_period(struct perf_event *event, u64 left)
return left;
}
+static u64 nhm_limit_period(struct perf_event *event, u64 left)
+{
+ return max(left, 32ULL);
+}
+
PMU_FORMAT_ATTR(event, "config:0-7" );
PMU_FORMAT_ATTR(umask, "config:8-15" );
PMU_FORMAT_ATTR(edge, "config:18" );
@@ -3734,6 +3739,7 @@ __init int intel_pmu_init(void)
x86_pmu.pebs_constraints = intel_nehalem_pebs_event_constraints;
x86_pmu.enable_all = intel_pmu_nhm_enable_all;
x86_pmu.extra_regs = intel_nehalem_extra_regs;
+ x86_pmu.limit_period = nhm_limit_period;
x86_pmu.cpu_events = nhm_events_attrs;
--
2.20.1
next prev parent reply other threads:[~2019-09-04 16:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-04 16:01 [PATCH AUTOSEL 4.9 01/27] ARM: OMAP2+: Fix missing SYSC_HAS_RESET_STATUS for dra7 epwmss Sasha Levin
2019-09-04 16:01 ` [PATCH AUTOSEL 4.9 02/27] s390/bpf: fix lcgr instruction encoding Sasha Levin
2019-09-04 16:01 ` [PATCH AUTOSEL 4.9 03/27] ARM: OMAP2+: Fix omap4 errata warning on other SoCs Sasha Levin
2019-09-04 16:01 ` [PATCH AUTOSEL 4.9 04/27] s390/bpf: use 32-bit index for tail calls Sasha Levin
2019-09-04 16:01 ` [PATCH AUTOSEL 4.9 05/27] batman-adv: fix uninit-value in batadv_netlink_get_ifindex() Sasha Levin
2019-09-04 16:01 ` [PATCH AUTOSEL 4.9 06/27] NFSv4: Fix return values for nfs4_file_open() Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 07/27] NFS: Fix initialisation of I/O result struct in nfs_pgio_rpcsetup Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 08/27] Kconfig: Fix the reference to the IDT77105 Phy driver in the description of ATM_NICSTAR_USE_IDT77105 Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 09/27] qed: Add cleanup in qed_slowpath_start() Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 10/27] ARM: 8874/1: mm: only adjust sections of valid mm structures Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 11/27] batman-adv: Only read OGM tvlv_len after buffer len check Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 12/27] batman-adv: Only read OGM2 " Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 13/27] r8152: Set memory to all 0xFFs on failed reg reads Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 14/27] x86/apic: Fix arch_dynirq_lower_bound() bug for DT enabled machines Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 15/27] netfilter: nf_conntrack_ftp: Fix debug output Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 16/27] NFSv2: Fix eof handling Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 17/27] NFSv2: Fix write regression Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 18/27] cifs: set domainName when a domain-key is used in multiuser Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 19/27] cifs: Use kzfree() to zero out the password Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 20/27] x86/build: Add -Wnoaddress-of-packed-member to REALMODE_CFLAGS, to silence GCC9 build warning Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 21/27] ARM: 8901/1: add a criteria for pfn_valid of arm Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 22/27] sky2: Disable MSI on yet another ASUS boards (P6Xxxx) Sasha Levin
2019-09-04 16:02 ` Sasha Levin [this message]
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 24/27] perf/x86/amd/ibs: Fix sample bias for dispatched micro-ops Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 25/27] net: stmmac: dwmac-rk: Don't fail if phy regulator is absent Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 26/27] tools/power turbostat: fix buffer overrun Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.9 27/27] net: seeq: Fix the function used to release some memory in an error handling path Sasha Levin
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