Linux kernel documentation tree maintained by Jonathan Corbet http://mirrors.hust.edu.cn/git/lwn.git/atom?h=v3.7.4 2012-10-12T01:49:08+00:00 2012-10-12T01:49:08+00:00 Linus Torvalds torvalds@linux-foundation.org 2012-10-12T01:49:08+00:00 urn:sha1:8213a2f3eeafdecf06dd718cb4130372263f6067 Pull pile 2 of execve and kernel_thread unification work from Al Viro: "Stuff in there: kernel_thread/kernel_execve/sys_execve conversions for several more architectures plus assorted signal fixes and cleanups. There'll be more (in particular, real fixes for the alpha do_notify_resume() irq mess)..." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (43 commits) alpha: don't open-code trace_report_syscall_{enter,exit} Uninclude linux/freezer.h m32r: trim masks avr32: trim masks tile: don't bother with SIGTRAP in setup_frame microblaze: don't bother with SIGTRAP in setup_rt_frame() mn10300: don't bother with SIGTRAP in setup_frame() frv: no need to raise SIGTRAP in setup_frame() x86: get rid of duplicate code in case of CONFIG_VM86 unicore32: remove pointless test h8300: trim _TIF_WORK_MASK parisc: decide whether to go to slow path (tracesys) based on thread flags parisc: don't bother looping in do_signal() parisc: fix double restarts bury the rest of TIF_IRET sanitize tsk_is_polling() bury _TIF_RESTORE_SIGMASK unicore32: unobfuscate _TIF_WORK_MASK mips: NOTIFY_RESUME is not needed in TIF masks mips: merge the identical "return from syscall" per-ABI code ... Conflicts: arch/arm/include/asm/thread_info.h 2012-10-01T13:58:13+00:00 Al Viro viro@zeniv.linux.org.uk 2012-06-01T18:22:01+00:00 urn:sha1:16a8016372c42c7628eb4a39d75386a461e8c5d0 Make default just return 0. The current default (checking TIF_POLLING_NRFLAG) is taken to architectures that need it; ones that don't do polling in their idle threads don't need to defined TIF_POLLING_NRFLAG at all. ia64 defined both TS_POLLING (used by its tsk_is_polling()) and TIF_POLLING_NRFLAG (not used at all). Killed the latter... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-09-18T05:32:39+00:00 Tiejun Chen tiejun.chen@windriver.com 2012-09-16T23:54:29+00:00 urn:sha1:f0d1128fcb919a73941a54f80efab04fa3160dfe We need to add a new thread flag, TIF_EMULATE_STACK_STORE, for emulating stack store operation while exiting exception. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 2012-09-05T05:35:19+00:00 Ananth N Mavinakayanahalli ananth@in.ibm.com 2012-08-23T21:31:32+00:00 urn:sha1:8b7b80b9ebb46dd88fbb94e918297295cf312b59 This is the port of uprobes to powerpc. Usage is similar to x86. [root@xxxx ~]# ./bin/perf probe -x /lib64/libc.so.6 malloc Added new event: probe_libc:malloc (on 0xb4860) You can now use it in all perf tools, such as: perf record -e probe_libc:malloc -aR sleep 1 [root@xxxx ~]# ./bin/perf record -e probe_libc:malloc -aR sleep 20 [ perf record: Woken up 22 times to write data ] [ perf record: Captured and wrote 5.843 MB perf.data (~255302 samples) ] [root@xxxx ~]# ./bin/perf report --stdio ... 69.05% tar libc-2.12.so [.] malloc 28.57% rm libc-2.12.so [.] malloc 1.32% avahi-daemon libc-2.12.so [.] malloc 0.58% bash libc-2.12.so [.] malloc 0.28% sshd libc-2.12.so [.] malloc 0.08% irqbalance libc-2.12.so [.] malloc 0.05% bzip2 libc-2.12.so [.] malloc 0.04% sleep libc-2.12.so [.] malloc 0.03% multipathd libc-2.12.so [.] malloc 0.01% sendmail libc-2.12.so [.] malloc 0.01% automount libc-2.12.so [.] malloc The trap_nr addition patch is a prereq. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 2012-07-11T04:18:22+00:00 Stuart Yoder stuart.yoder@freescale.com 2012-07-05T04:41:35+00:00 urn:sha1:9778b696a0188ad3b3524b383953ee73b31b7b68 Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 2012-06-01T16:58:50+00:00 Al Viro viro@zeniv.linux.org.uk 2012-04-27T17:42:45+00:00 urn:sha1:edd63a2763bdae0daa4f0a4d4c5d61d1154352a5 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-06-01T16:58:47+00:00 Al Viro viro@zeniv.linux.org.uk 2012-04-27T02:29:20+00:00 urn:sha1:4ebefe3ec729003443daf153ed6fad1739271283 helpers parallel to set_restore_sigmask(), used in the next commits Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-05-23T16:02:42+00:00 Linus Torvalds torvalds@linux-foundation.org 2012-05-23T16:02:42+00:00 urn:sha1:6f73b3629f774c6cba589b15fd095112b25ca923 Pull powerpc updates from Benjamin Herrenschmidt: "Here are the powerpc goodies for 3.5. Main highlights are: - Support for the NX crypto engine in Power7+ - A bunch of Anton goodness, including some micro optimization of our syscall entry on Power7 - I converted a pile of our thermal control drivers to the new i2c APIs (essentially turning the old therm_pm72 into a proper set of windfarm drivers). That's one more step toward removing the deprecated i2c APIs, there's still a few drivers to fix, but we are getting close - kexec/kdump support for 47x embedded cores The big missing thing here is no updates from Freescale. Not sure what's up here, but with Kumar not working for them anymore things are a bit in a state of flux in that area." * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (71 commits) powerpc: Fix irq distribution Revert "powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags" powerpc: Fixing a cputhread code documentation powerpc/crypto: Enable the PFO-based encryption device powerpc/crypto: Build files for the nx device driver powerpc/crypto: debugfs routines and docs for the nx device driver powerpc/crypto: SHA512 hash routines for nx encryption powerpc/crypto: SHA256 hash routines for nx encryption powerpc/crypto: AES-XCBC mode routines for nx encryption powerpc/crypto: AES-GCM mode routines for nx encryption powerpc/crypto: AES-ECB mode routines for nx encryption powerpc/crypto: AES-CTR mode routines for nx encryption powerpc/crypto: AES-CCM mode routines for nx encryption powerpc/crypto: AES-CBC mode routines for nx encryption powerpc/crypto: nx driver code supporting nx encryption powerpc/pseries: Enable the PFO-based RNG accelerator powerpc/pseries/hwrng: PFO-based hwrng driver powerpc/pseries: Add PFO support to the VIO bus powerpc/pseries: Add pseries update notifier for OFDT prop changes powerpc/pseries: Add new hvcall constants to support PFO ... 2012-05-09T00:59:34+00:00 Tiejun Chen tiejun.chen@windriver.com 2012-05-07T23:26:36+00:00 urn:sha1:a7243c1d09ade57d8d48a350753dc2d1af735805 'TIF_RUNLATCH' is already dropped from commit fe1952fc0afb9a2e4c79f103c08aef5d13db1873 powerpc: Rework runlatch code So '_TIF_RUNLATCH' should be removed as well. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 2012-05-08T12:08:45+00:00 Thomas Gleixner tglx@linutronix.de 2012-05-05T15:05:45+00:00 urn:sha1:96c951179736eb59c5f66de2ac85af9e7a6a8b15 The core now has a threadinfo allocator which uses a kmemcache when THREAD_SIZE < PAGE_SIZE. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Link: http://lkml.kernel.org/r/20120505150142.059161130@linutronix.de