Messages in this thread | | | From | Namhyung Kim <> | Subject | Re: Perf events warning.. | Date | Mon, 21 May 2012 15:06:05 +0900 |
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Hi,
On Wed, 16 May 2012 10:38:33 +0900, Namhyung Kim wrote: > On Tue, 15 May 2012 09:37:37 -0600, David Ahern wrote: >> :-) Right, KVM and the vPMU added in 3.3. That said, it is recognized >> as a Nehalem and perf walks the Nehalem events path. >> >> So if VM based WARNING is not to your liking, here's a baremetal version: >> >> [ 84.388495] ------------[ cut here ]------------ >> [ 84.388554] WARNING: at >> /opt/sw/ahern/kernels/kernel-2.6.git/arch/x86/kernel/cpu/perf_event.c:1054 >> x86_pmu_start+0xdc/0x110() >> [ 84.388613] Hardware name: ProLiant DL380 G6 >> [ 84.388663] Modules linked in: nfs fscache bridge stp llc >> ipt_MASQUERADE iptable_nat nf_nat xt_physdev nf_conntrack_ipv4 >> nf_defrag_ipv4 xt_state nf_conntrack xt_multiport nfsd lockd nfs_acl >> auth_rpcgss sunrpc coretemp ipmi_si ipmi_msghandler bnx2 i7core_edac >> edac_core hpilo hpwdt acpi_power_meter crc32c_intel microcode iTCO_wdt >> iTCO_vendor_support vhost_net pcspkr macvtap macvlan tun virtio_net >> kvm_intel kvm usb_storage hpsa radeon ttm drm_kms_helper drm >> i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan] >> [ 84.390624] Pid: 1806, comm: find Not tainted 3.4.0-rc7+ #1 >> [ 84.390671] Call Trace: >> [ 84.390719] [<ffffffff810579df>] warn_slowpath_common+0x7f/0xc0 >> [ 84.390769] [<ffffffff81057a3a>] warn_slowpath_null+0x1a/0x20 >> [ 84.390831] [<ffffffff8102546c>] x86_pmu_start+0xdc/0x110 >> [ 84.390880] [<ffffffff81025b22>] x86_pmu_enable+0x212/0x270 >> [ 84.390996] [<ffffffff81116496>] perf_event_context_sched_in+0xe6/0x100 >> [ 84.391113] [<ffffffff811180b3>] perf_event_comm+0x103/0x2b0 >> [ 84.391232] [<ffffffff81186732>] set_task_comm+0x72/0xe0 >> [ 84.391361] [<ffffffff81186e0b>] setup_new_exec+0x8b/0x240 >> [ 84.391480] [<ffffffff811ceca7>] load_elf_binary+0x3e7/0x19a0 >> [ 84.391600] [<ffffffff81145ac2>] ? get_user_pages+0x52/0x60 >> [ 84.391716] [<ffffffff81184af8>] ? get_user_arg_ptr+0x38/0x80 >> [ 84.391833] [<ffffffff81184f9e>] search_binary_handler+0xee/0x340 >> [ 84.391963] [<ffffffff811ce8c0>] ? load_elf_library+0x230/0x230 >> [ 84.392080] [<ffffffff81186bef>] do_execve_common+0x36f/0x410 >> [ 84.392196] [<ffffffff81186cca>] do_execve+0x3a/0x40 >> [ 84.392328] [<ffffffff8101d4a7>] sys_execve+0x47/0x70 >> [ 84.392445] [<ffffffff816002ec>] stub_execve+0x6c/0xc0 >> [ 84.392558] ---[ end trace 78e50a201158fd5d ]--- >> >> >> Though this one is an HP server with the lovely: >> >> [ 0.143910] Performance Events: PEBS fmt1+, 16-deep LBR, Nehalem >> events, Broken BIOS detected, complain to your hardware vendor. >> [ 0.144351] [Firmware Bug]: the BIOS has corrupted hw-PMU resources >> (MSR 38d is 330) >> [ 0.144627] Intel PMU driver. >> [ 0.144777] CPU erratum AAJ80 worked around >> >> David > > I got a similar warning on my SNB (i7-3930K) desktop. >
The git bisect told me (sigh):
a34668f6beb4ab01e07683276d6a24bab6c175e0 is the first bad commit commit a34668f6beb4ab01e07683276d6a24bab6c175e0 Author: Youquan Song <youquan.song@intel.com> Date: Tue Aug 2 14:01:35 2011 +0800
perf, x86: Add model 45 SandyBridge support
Add support to Romely-EP SandyBridge.
Signed-off-by: Youquan Song <youquan.song@intel.com> Signed-off-by: Anhua Xu <anhua.xu@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1312264895-2010-1-git-send-email-youquan.song@intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
:040000 040000 c8302c68b80d3657cfd6afa5eb51300c0996baf1 ba78ebeb8ad6cce92fba8f643b4c5b1007d0e336 March
Thanks, Namhyung
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