- 30 8月, 2013 2 次提交
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由 Adrian Hunter 提交于
Now that the sample parsing correctly checks data sizes there is no reason for it to be done again for callchains. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NNamhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1377591794-30553-4-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
The size of data retrieved from a sample event must be validated to ensure it does not go past the end of the event. That was being done sporadically and without considering integer overflows. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NJiri Olsa <jolsa@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1377591794-30553-3-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 29 8月, 2013 13 次提交
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由 Adrian Hunter 提交于
Add a new parameter for 'pid' to machine__findnew_thread(). Change callers to pass 'pid' when it is known. Note that callers sometimes want to find the main thread which has the memory maps. The main thread has tid == pid so the usage in that case is: machine__findnew_thread(machine, pid, pid) whereas the usage to find the specific thread is: machine__findnew_thread(machine, pid, tid) Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NDavid Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1377591794-30553-2-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Ingo Molnar 提交于
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: * Don't install scripting files files when perl/python support is disabled. * Support ! in -e expressions in 'perf trace', to filter a list of syscalls. * Add --verbose and -o/--output options to 'perf trace'. * Introduce better formatting of syscall arguments in 'perf trace', including so far beautifiers for mmap, madvise, syscall return values. * Fixup jobserver setup in libtraceevent makefile. * Debug improvements from Adrian Hunter. * Try to increase the file descriptor limits on EMFILE, from Andi Kleen. * Remove unused force option in 'perf kvm', from David Ahern. * Make 'perf trace' command line arguments consistent with 'perf record', from David Ahern. * Fix correlation of samples coming after PERF_RECORD_EXIT event, from David Ahern. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NIngo Molnar <mingo@kernel.org>
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由 Ingo Molnar 提交于
Pick up the latest upstream fixes. Signed-off-by: NIngo Molnar <mingo@kernel.org>
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由 Linus Torvalds 提交于
Merge fixes from Andrew Morton: "Five fixes. err, make that six. let me try again" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: fs/ocfs2/super.c: Use bigger nodestr to accomodate 32-bit node numbers memcg: check that kmem_cache has memcg_params before accessing it drivers/base/memory.c: fix show_mem_removable() to handle missing sections IPC: bugfix for msgrcv with msgtyp < 0 Omnikey Cardman 4000: pull in ioctl.h in user header timer_list: correct the iterator for timer_list
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由 Goldwyn Rodrigues 提交于
While using pacemaker/corosync, the node numbers are generated using IP address as opposed to serial node number generation. This may not fit in a 8-byte string. Use a bigger string to print the complete node number. Signed-off-by: NGoldwyn Rodrigues <rgoldwyn@suse.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrey Vagin 提交于
If the system had a few memory groups and all of them were destroyed, memcg_limited_groups_array_size has non-zero value, but all new caches are created without memcg_params, because memcg_kmem_enabled() returns false. We try to enumirate child caches in a few places and all of them are potentially dangerous. For example my kernel is compiled with CONFIG_SLAB and it crashed when I tryed to mount a NFS share after a few experiments with kmemcg. BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: [<ffffffff8118166a>] do_tune_cpucache+0x8a/0xd0 PGD b942a067 PUD b999f067 PMD 0 Oops: 0000 [#1] SMP Modules linked in: fscache(+) ip6table_filter ip6_tables iptable_filter ip_tables i2c_piix4 pcspkr virtio_net virtio_balloon i2c_core floppy CPU: 0 PID: 357 Comm: modprobe Not tainted 3.11.0-rc7+ #59 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 task: ffff8800b9f98240 ti: ffff8800ba32e000 task.ti: ffff8800ba32e000 RIP: 0010:[<ffffffff8118166a>] [<ffffffff8118166a>] do_tune_cpucache+0x8a/0xd0 RSP: 0018:ffff8800ba32fb70 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000006 RDX: 0000000000000000 RSI: ffff8800b9f98910 RDI: 0000000000000246 RBP: ffff8800ba32fba0 R08: 0000000000000002 R09: 0000000000000004 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000010 R13: 0000000000000008 R14: 00000000000000d0 R15: ffff8800375d0200 FS: 00007f55f1378740(0000) GS:ffff8800bfa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f24feba57a0 CR3: 0000000037b51000 CR4: 00000000000006f0 Call Trace: enable_cpucache+0x49/0x100 setup_cpu_cache+0x215/0x280 __kmem_cache_create+0x2fa/0x450 kmem_cache_create_memcg+0x214/0x350 kmem_cache_create+0x2b/0x30 fscache_init+0x19b/0x230 [fscache] do_one_initcall+0xfa/0x1b0 load_module+0x1c41/0x26d0 SyS_finit_module+0x86/0xb0 system_call_fastpath+0x16/0x1b Signed-off-by: NAndrey Vagin <avagin@openvz.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Christoph Lameter <cl@linux.com> Cc: Glauber Costa <glommer@openvz.org> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Russ Anderson 提交于
"cat /sys/devices/system/memory/memory*/removable" crashed the system. The problem is that show_mem_removable() is passing a bad pfn to is_mem_section_removable(), which causes if (!node_online(page_to_nid(page))) to blow up. Why is it passing in a bad pfn? The reason is that show_mem_removable() will loop sections_per_block times. sections_per_block is 16, but mem->section_count is 8, indicating holes in this memory block. Checking that the memory section is present before checking to see if the memory section is removable fixes the problem. harp5-sys:~ # cat /sys/devices/system/memory/memory*/removable 0 1 1 1 1 1 1 1 1 1 1 1 1 1 BUG: unable to handle kernel paging request at ffffea00c3200000 IP: [<ffffffff81117ed1>] is_pageblock_removable_nolock+0x1/0x90 PGD 83ffd4067 PUD 37bdfce067 PMD 0 Oops: 0000 [#1] SMP Modules linked in: autofs4 binfmt_misc rdma_ucm rdma_cm iw_cm ib_addr ib_srp scsi_transport_srp scsi_tgt ib_ipoib ib_cm ib_uverbs ib_umad iw_cxgb3 cxgb3 mdio mlx4_en mlx4_ib ib_sa mlx4_core ib_mthca ib_mad ib_core fuse nls_iso8859_1 nls_cp437 vfat fat joydev loop hid_generic usbhid hid hwperf(O) numatools(O) dm_mod iTCO_wdt ipv6 iTCO_vendor_support igb i2c_i801 ioatdma i2c_algo_bit ehci_pci pcspkr lpc_ich i2c_core ehci_hcd ptp sg mfd_core dca rtc_cmos pps_core mperf button xhci_hcd sd_mod crc_t10dif usbcore usb_common scsi_dh_emc scsi_dh_hp_sw scsi_dh_alua scsi_dh_rdac scsi_dh gru(O) xvma(O) xfs crc32c libcrc32c thermal sata_nv processor piix mptsas mptscsih scsi_transport_sas mptbase megaraid_sas fan thermal_sys hwmon ext3 jbd ata_piix ahci libahci libata scsi_mod CPU: 4 PID: 5991 Comm: cat Tainted: G O 3.11.0-rc5-rja-uv+ #10 Hardware name: SGI UV2000/ROMLEY, BIOS SGI UV 2000/3000 series BIOS 01/15/2013 task: ffff88081f034580 ti: ffff880820022000 task.ti: ffff880820022000 RIP: 0010:[<ffffffff81117ed1>] [<ffffffff81117ed1>] is_pageblock_removable_nolock+0x1/0x90 RSP: 0018:ffff880820023df8 EFLAGS: 00010287 RAX: 0000000000040000 RBX: ffffea00c3200000 RCX: 0000000000000004 RDX: ffffea00c30b0000 RSI: 00000000001c0000 RDI: ffffea00c3200000 RBP: ffff880820023e38 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffffea00c33c0000 R13: 0000160000000000 R14: 6db6db6db6db6db7 R15: 0000000000000001 FS: 00007ffff7fb2700(0000) GS:ffff88083fc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffea00c3200000 CR3: 000000081b954000 CR4: 00000000000407e0 Call Trace: show_mem_removable+0x41/0x70 dev_attr_show+0x2a/0x60 sysfs_read_file+0xf7/0x1c0 vfs_read+0xc8/0x130 SyS_read+0x5d/0xa0 system_call_fastpath+0x16/0x1b Signed-off-by: NRuss Anderson <rja@sgi.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: Yinghai Lu <yinghai@kernel.org> Reviewed-by: NYasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Svenning Sørensen 提交于
According to 'man msgrcv': "If msgtyp is less than 0, the first message of the lowest type that is less than or equal to the absolute value of msgtyp shall be received." Bug: The kernel only returns a message if its type is 1; other messages with type < abs(msgtype) will never get returned. Fix: After having traversed the list to find the first message with the lowest type, we need to actually return that message. This regression was introduced by commit daaf74cf ("ipc: refactor msg list search into separate function") Signed-off-by: NSvenning Soerensen <sss@secomea.dk> Reviewed-by: NPeter Hurley <peter@hurleysoftware.com> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Frysinger 提交于
This file uses the ioctl helpers (_IOR/_IOW/etc...), so include ioctl.h for the definitions. Signed-off-by: NMike Frysinger <vapier@gentoo.org> Cc: Harald Welte <laforge@gnumonks.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Nathan Zimmer 提交于
Correct an issue with /proc/timer_list reported by Holger. When reading from the proc file with a sufficiently small buffer, 2k so not really that small, there was one could get hung trying to read the file a chunk at a time. The timer_list_start function failed to account for the possibility that the offset was adjusted outside the timer_list_next. Signed-off-by: NNathan Zimmer <nzimmer@sgi.com> Reported-by: NHolger Hans Peter Freyther <holger@freyther.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Berke Durak <berke.durak@xiphos.com> Cc: Jeff Layton <jlayton@redhat.com> Tested-by: NAl Viro <viro@zeniv.linux.org.uk> Cc: <stable@vger.kernel.org> # 3.10.x Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Waiman Long 提交于
This just replaces the dentry count/lock combination with the lockref structure that contains both a count and a spinlock, and does the mechanical conversion to use the lockref infrastructure. There are no semantic changes here, it's purely syntactic. The reference lockref implementation uses the spinlock exactly the same way that the old dcache code did, and the bulk of this patch is just expanding the internal "d_count" use in the dcache code to use "d_lockref.count" instead. This is purely preparation for the real change to make the reference count updates be lockless during the 3.12 merge window. [ As with the previous commit, this is a rewritten version of a concept originally from Waiman, so credit goes to him, blame for any errors goes to me. Waiman's patch had some semantic differences for taking advantage of the lockless update in dget_parent(), while this patch is intentionally a pure search-and-replace change with no semantic changes. - Linus ] Signed-off-by: NWaiman Long <Waiman.Long@hp.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Waiman Long 提交于
This introduces a new "lockref" structure that supports the concept of lockless updates of reference counts that still honor an attached spinlock. NOTE! This reference implementation is not the optimized lockless version, rather it is the fallback implementation using standard spinlocks. The actual optimized versions will be merged into 3.12, but I wanted to get the infrastructure in place and document the new interfaces. [ Also note that this particular commit is drastically cut-down minimal version of the original patch by Waiman. In order to properly credit the original author I'm marking Waiman as the author here, but in the end this patch bears little resemblance to the patch by Waiman. So blame any errors on me editing things down to the point where I can introduce the infrastructure before the merge window for 3.12 actually opens. - Linus ] Signed-off-by: NWaiman Long <Waiman.Long@hp.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
This reverts commit bb2314b4. It wasn't necessarily wrong per se, but we're still busily discussing the exact details of this all, so I'm going to revert it for now. It's true that you can already do flink() through /proc and that flink() isn't new. But as Brad Spengler points out, some secure environments do not mount proc, and flink adds a new interface that can avoid path lookup of the source for those kinds of environments. We may re-do this (and even mark it for stable backporting back in 3.11 and possibly earlier) once the whole discussion about the interface is done. Cc: Andy Lutomirski <luto@amacapital.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Brad Spengler <spender@grsecurity.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 28 8月, 2013 3 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap由 Linus Torvalds 提交于
Pull regmap fixes from Mark Brown: "Two changes here: - Fix a bug in the rbtree code which could cause it to create two different cache entries for the same register by adding a single register at a time to the cache. This isn't awesome for performance but it's non-invasive which we need for this late in the release cycle and the I/O costs we're trying to avoid are high. - Add another header used in the !CONFIG_REGMAP stubs where we had been relying on implicit inclusion" * tag 'regmap-v3.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: rbtree: Fix overlapping rbnodes. regmap: Add another missing header for !CONFIG_REGMAP stubs
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc由 Linus Torvalds 提交于
Pull powerpc fixes from Ben Herrenschmidt: "Here are 3 bug fixes that should probably go into 3.11 since I'm also tagging them for stable. Once fixes our old /proc/powerpc/lparcfg file which provides partition informations when running under our hypervisor and also acts as a user-triggerable Oops when hot :-( The other two respectively are a one liner to fix a HVSI protocol handshake problem causing the console to fail to show up on a bunch of machines until we reach userspace, which I deem annoying enough to warrant going to stable, and a nasty gcc miscompile causing us to pass virtual instead of physical addresses to the firmware under some circumstances" * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/hvsi: Increase handshake timeout from 200ms to 400ms. powerpc: Work around gcc miscompilation of __pa() on 64-bit powerpc: Don't Oops when accessing /proc/powerpc/lparcfg without hypervisor
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由 Cyrill Gorcunov 提交于
Dave reported corrupted swap entries | [ 4588.541886] swap_free: Unused swap offset entry 00002d15 | [ 4588.541952] BUG: Bad page map in process trinity-kid12 pte:005a2a80 pmd:22c01f067 and Hugh pointed that in move_ptes _PAGE_SOFT_DIRTY bit set regardless the type of entry pte consists of. The trick here is that when we carry soft dirty status in swap entries we are to use _PAGE_SWP_SOFT_DIRTY instead, because this is the only place in pte which can be used for own needs without intersecting with bits owned by swap entry type/offset. Reported-and-tested-by: NDave Jones <davej@redhat.com> Signed-off-by: NCyrill Gorcunov <gorcunov@openvz.org> Cc: Pavel Emelyanov <xemul@parallels.com> Analyzed-by: NHugh Dickins <hughd@google.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 27 8月, 2013 22 次提交
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由 Arnaldo Carvalho de Melo 提交于
Getting rid of: make[1]: Entering directory `/home/git/linux/tools/lib/traceevent' make[2]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule. make[1]: Entering directory `/home/git/linux/tools/lib/lk When running: make -j4 O=/tmp/build/perf -C tools/perf install-bin Acked-by: NBorislav Petkov <bp@suse.de> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-pvr7uppe329gw9onchgdu0m6@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Adrian Hunter 提交于
Record pid on struct thread. The member is named 'pid_' to avoid confusion with the 'tid' member which was previously named 'pid'. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NDavid Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1377522030-27870-3-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
[root@zoo ~]# perf trace -e madvise -a 35299.631 ( 0.019 ms): 19553 madvise(start: 0x7f5b101d4000, len_in: 4063232, behavior: DONTNEED ) = 0 Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-a3twa1ia5sxt0hsxqika4efq@git.kernel.org [ ifdef DO(NT)?DUMP to fix build on f16, from David Ahern ] Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Eugene Surovegin 提交于
This solves a problem observed in kexec'ed kernel where 200ms timeout is too short and bootconsole fails to initialize. Console did eventually become workable but much later into the boot process. Observed timeout was around 260ms, but I decided to make it a little bigger for more reliability. This has been tested on Power7 machine with Petitboot as a primary bootloader and PowerNV firmware. CC: <stable@vger.kernel.org> Signed-off-by: NEugene Surovegin <surovegin@google.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Paul Mackerras 提交于
On 64-bit, __pa(&static_var) gets miscompiled by recent versions of gcc as something like: addis 3,2,.LANCHOR1+4611686018427387904@toc@ha addi 3,3,.LANCHOR1+4611686018427387904@toc@l This ends up effectively ignoring the offset, since its bottom 32 bits are zero, and means that the result of __pa() still has 0xC in the top nibble. This happens with gcc 4.8.1, at least. To work around this, for 64-bit we make __pa() use an AND operator, and for symmetry, we make __va() use an OR operator. Using an AND operator rather than a subtraction ends up with slightly shorter code since it can be done with a single clrldi instruction, whereas it takes three instructions to form the constant (-PAGE_OFFSET) and add it on. (Note that MEMORY_START is always 0 on 64-bit.) CC: <stable@vger.kernel.org> Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
/proc/powerpc/lparcfg is an ancient facility (though still actively used) which allows access to some informations relative to the partition when running underneath a PAPR compliant hypervisor. It makes no sense on non-pseries machines. However, currently, not only can it be created on these if the kernel has pseries support, but accessing it on such a machine will crash due to trying to do hypervisor calls. In fact, it should also not do HV calls on older pseries that didn't have an hypervisor either. Finally, it has the plumbing to be a module but is a "bool" Kconfig option. This fixes the whole lot by turning it into a machine_device_initcall that is only created on pseries, and adding the necessary hypervisor check before calling the H_GET_EM_PARMS hypercall CC: <stable@vger.kernel.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb由 Linus Torvalds 提交于
Pull USB bugfix from Greg KH: "Here is a single bugfix that resolves the "can not build the OHCI driver with CONFIG_PM disabled" problem that lots of people have been reporting with 3.11-rc7. Sorry about that one, it missed my build tests, and it seems, a number of others as well. Thank goodness for Guenter :)" * tag 'usb-3.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: USB: OHCI: fix build error related to ohci_suspend/resume
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git://github.com/kleikamp/linux-shaggy由 Linus Torvalds 提交于
Pull jfs fix from Dave Kleikamp: "One JFS patch to fix an incompatibility with NFSv4 resulting in the nfs client reporting a readdir loop" * tag 'jfs-3.11-rc8' of git://github.com/kleikamp/linux-shaggy: jfs: fix readdir cookie incompatibility with NFSv4
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由 Alan Stern 提交于
Commit 9a11899c (USB: OHCI: add missing PCI PM callbacks to ohci-pci.c) added missing ohci_suspend and ohci_resume callback pointers, but forgot that these callbacks are declared and defined only when CONFIG_PM is enabled. This patch adds a preprocessor conditional to avoid build errors when PM is disabled. Reported-by: NGuenter Roeck <linux@roeck-us.net> Tested-by: NGuenter Roeck <linux@roeck-us.net> Reported-by: Meelis Roos <mroos@linux.ee>, Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Arnaldo Carvalho de Melo 提交于
[root@zoo ~]# perf trace -e mmap,mprotect sleep 1 0.992 ( 0.015 ms): mmap(addr: 0, len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: 4294967295, off: 0) = 0xa60be000 1.108 ( 0.012 ms): mmap(addr: 0, len: 125100, prot: READ, flags: PRIVATE, fd: 3, off: 0 ) = 0xa609f000 1.209 ( 0.014 ms): mmap(addr: 0x33c1600000, len: 3896312, prot: EXEC|READ, flags: PRIVATE|DENYWRITE, fd: 3, off: 0) = 0xc1600000 1.232 ( 0.018 ms): mprotect(start: 0x33c17ad000, len: 2097152, prot: NONE ) = 0 1.255 ( 0.018 ms): mmap(addr: 0x33c19ad000, len: 24576, prot: READ|WRITE, flags: PRIVATE|DENYWRITE|FIXED, fd: 3, off: 1757184) = 0xc19ad000 1.281 ( 0.011 ms): mmap(addr: 0x33c19b3000, len: 17400, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS|FIXED, fd: 4294967295, off: 0) = 0xc19b3000 1.328 ( 0.008 ms): mmap(addr: 0, len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: 4294967295, off: 0) = 0xa609e000 1.346 ( 0.008 ms): mmap(addr: 0, len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: 4294967295, off: 0) = 0xa609c000 1.443 ( 0.013 ms): mprotect(start: 0x606000, len: 4096, prot: READ ) = 0 1.459 ( 0.011 ms): mprotect(start: 0x33c19ad000, len: 16384, prot: READ ) = 0 1.477 ( 0.011 ms): mprotect(start: 0x33c1420000, len: 4096, prot: READ ) = 0 1.855 ( 0.013 ms): mmap(addr: 0, len: 104789808, prot: READ, flags: PRIVATE, fd: 3, off: 0) = 0x9fcac000 [root@zoo ~]# Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-q1ubhdd9wigxneam616ggdsn@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
[root@zoo ~]# perf trace -e mmap,mprotect sleep 1 0.984 ( 0.015 ms): mmap(addr: 0, len: 4096, prot: READ|WRITE, flags: 34, fd: 4294967295, off: 0) = 0xd62ae000 1.114 ( 0.016 ms): mmap(addr: 0, len: 125100, prot: READ, flags: 2, fd: 3, off: 0 ) = 0xd628f000 1.252 ( 0.020 ms): mmap(addr: 0x33c1600000, len: 3896312, prot: EXEC|READ, flags: 2050, fd: 3, off: 0) = 0xc1600000 1.282 ( 0.024 ms): mprotect(start: 0x33c17ad000, len: 2097152, prot: NONE ) = 0 1.315 ( 0.026 ms): mmap(addr: 0x33c19ad000, len: 24576, prot: READ|WRITE, flags: 2066, fd: 3, off: 1757184) = 0xc19ad000 1.352 ( 0.017 ms): mmap(addr: 0x33c19b3000, len: 17400, prot: READ|WRITE, flags: 50, fd: 4294967295, off: 0) = 0xc19b3000 1.415 ( 0.011 ms): mmap(addr: 0, len: 4096, prot: READ|WRITE, flags: 34, fd: 4294967295, off: 0) = 0xd628e000 1.440 ( 0.011 ms): mmap(addr: 0, len: 8192, prot: READ|WRITE, flags: 34, fd: 4294967295, off: 0) = 0xd628c000 1.569 ( 0.019 ms): mprotect(start: 0x606000, len: 4096, prot: READ ) = 0 1.591 ( 0.017 ms): mprotect(start: 0x33c19ad000, len: 16384, prot: READ ) = 0 1.616 ( 0.016 ms): mprotect(start: 0x33c1420000, len: 4096, prot: READ ) = 0 2.105 ( 0.018 ms): mmap(addr: 0, len: 104789808, prot: READ, flags: 2, fd: 3, off: 0 ) = 0xcfe9c000 [root@zoo ~]# Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-q1ubhdd9wigxneam616ggdsn@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
The mmap syscalls, for instance, don't have the FORMAT_IS_POINTER for its pointer arguments, override it. This also paves the way for more specialized argument beautifiers, like for mmap's prot and flags arguments. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-mm864hvhrpt39muxmmbtjasz@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Before: 2392.918 ( 0.008 ms): 21581 lstat(arg0: 140734915488448, arg1: 140734915488240, arg2: 140734915488240, arg3: 3, arg4: 24426352, arg5: 98) = 0 After: 7408.087 ( 0.013 ms): 21969 lstat(filename: 0x7fff44b4bf20, statbuf: 0x7fff44b4be50 ) = 0 Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-8nxaole8mb7zyopk47tdellj@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
event_format->flags has a FIELD_IS_POINTER, but it is not set for the sys_exit 'ret' field in syscalls like mmap, so we need a way to ask for hex printing for pointer returns and keep things like 'read' returns printing in decimal. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-lfuveegw4od1t08n7bsmonrm@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Avoiding multiple sc->fmt != NULL tests. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-w28d1o3uslden0k57653kda7@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Starting with one for printing pointers in hexadecimal, using the information in the syscall tracepoint format. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-c4y4jy7qqkn8wsd8q6j1g7zh@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
That was reproduced via ftrace as described in this cset comment log, need to investigate further. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-n1i3m0vo6mgq3ddjj95sls2s@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ain6q4u8g3bpnh18yhw24v2x@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
So that we can ask for all but a set of syscalls to be traced. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-9j6hvap23qanyl96wx4mrj9k@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
No need to install perl or python files when the respective NO_LIBP{YTHON,ERL} define is set. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-c69d4jz08gb1zm2vpervva2q@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 David Ahern 提交于
Occassionally events (e.g., context-switch, sched tracepoints) are losing the conversion of sample data associated with a thread. For example: $ perf record -e sched:sched_switch -c 1 -a -- sleep 5 $ perf script <selected events shown> ls 30482 [000] 1379727.583037: sched:sched_switch: prev_comm=ls prev_pid=30482 ... ls 30482 [000] 1379727.586339: sched:sched_switch: prev_comm=ls prev_pid=30482 ... :30482 30482 [000] 1379727.589462: sched:sched_switch: prev_comm=ls prev_pid=30482 ... The last line lost the conversion from tid to comm. If you look at the events (perf script -D) you see why - a SAMPLE event is generated after the EXIT: 0 1379727589449774 0x1540b0 [0x38]: PERF_RECORD_EXIT(30482:30482):(30482:30482) 0 1379727589462497 0x1540e8 [0x80]: PERF_RECORD_SAMPLE(IP, 1): 30482/30482: 0xffffffff816416f1 period: 1 addr: 0 ... thread: :30482:30482 When perf processes the EXIT event the thread is moved to the dead_threads list. When the SAMPLE event is processed no thread exists for the pid so a new one is created by machine__findnew_thread. This patch address the problem by delaying the move to the dead_threads list until the tid is re-used (per Adrian's suggestion). With this patch we get the previous example shows: ls 30482 [000] 1379727.583037: sched:sched_switch: prev_comm=ls prev_pid=30482 ... ls 30482 [000] 1379727.586339: sched:sched_switch: prev_comm=ls prev_pid=30482 ... ls 30482 [000] 1379727.589462: sched:sched_switch: prev_comm=ls prev_pid=30482 ... and 0 1379727589449774 0x1540b0 [0x38]: PERF_RECORD_EXIT(30482:30482):(30482:30482) 0 1379727589462497 0x1540e8 [0x80]: PERF_RECORD_SAMPLE(IP, 1): 30482/30482: 0xffffffff816416f1 period: 1 addr: 0 ... thread: ls:30482 v4: per Arnaldo's request add dead flag to thread struct and set when task exits v3: re-do from a time based check to a delayed move to dead_threads list v2: Rebased to latest perf/core branch. Changed time comparison to use a macro which explicitly shows the time basis Signed-off-by: NDavid Ahern <dsahern@gmail.com> Acked-by: NAdrian Hunter <adrian.hunter@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1376491767-84171-1-git-send-email-dsahern@gmail.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 David Ahern 提交于
Common arguments like thread id, CPU list, mmap pages, etc should be consistent across perf commands. v3: Updated man page v2: rebased to latest core branch Signed-off-by: NDavid Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/r/1377018945-21940-1-git-send-email-dsahern@gmail.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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