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* tracing: Kernel TracepointsMathieu Desnoyers2008-10-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implementation of kernel tracepoints. Inspired from the Linux Kernel Markers. Allows complete typing verification by declaring both tracing statement inline functions and probe registration/unregistration static inline functions within the same macro "DEFINE_TRACE". No format string is required. See the tracepoint Documentation and Samples patches for usage examples. Taken from the documentation patch : "A tracepoint placed in code provides a hook to call a function (probe) that you can provide at runtime. A tracepoint can be "on" (a probe is connected to it) or "off" (no probe is attached). When a tracepoint is "off" it has no effect, except for adding a tiny time penalty (checking a condition for a branch) and space penalty (adding a few bytes for the function call at the end of the instrumented function and adds a data structure in a separate section). When a tracepoint is "on", the function you provide is called each time the tracepoint is executed, in the execution context of the caller. When the function provided ends its execution, it returns to the caller (continuing from the tracepoint site). You can put tracepoints at important locations in the code. They are lightweight hooks that can pass an arbitrary number of parameters, which prototypes are described in a tracepoint declaration placed in a header file." Addition and removal of tracepoints is synchronized by RCU using the scheduler (and preempt_disable) as guarantees to find a quiescent state (this is really RCU "classic"). The update side uses rcu_barrier_sched() with call_rcu_sched() and the read/execute side uses "preempt_disable()/preempt_enable()". We make sure the previous array containing probes, which has been scheduled for deletion by the rcu callback, is indeed freed before we proceed to the next update. It therefore limits the rate of modification of a single tracepoint to one update per RCU period. The objective here is to permit fast batch add/removal of probes on _different_ tracepoints. Changelog : - Use #name ":" #proto as string to identify the tracepoint in the tracepoint table. This will make sure not type mismatch happens due to connexion of a probe with the wrong type to a tracepoint declared with the same name in a different header. - Add tracepoint_entry_free_old. - Change __TO_TRACE to get rid of the 'i' iterator. Masami Hiramatsu <mhiramat@redhat.com> : Tested on x86-64. Performance impact of a tracepoint : same as markers, except that it adds about 70 bytes of instructions in an unlikely branch of each instrumented function (the for loop, the stack setup and the function call). It currently adds a memory read, a test and a conditional branch at the instrumentation site (in the hot path). Immediate values will eventually change this into a load immediate, test and branch, which removes the memory read which will make the i-cache impact smaller (changing the memory read for a load immediate removes 3-4 bytes per site on x86_32 (depending on mov prefixes), or 7-8 bytes on x86_64, it also saves the d-cache hit). About the performance impact of tracepoints (which is comparable to markers), even without immediate values optimizations, tests done by Hideo Aoki on ia64 show no regression. His test case was using hackbench on a kernel where scheduler instrumentation (about 5 events in code scheduler code) was added. Quoting Hideo Aoki about Markers : I evaluated overhead of kernel marker using linux-2.6-sched-fixes git tree, which includes several markers for LTTng, using an ia64 server. While the immediate trace mark feature isn't implemented on ia64, there is no major performance regression. So, I think that we don't have any issues to propose merging marker point patches into Linus's tree from the viewpoint of performance impact. I prepared two kernels to evaluate. The first one was compiled without CONFIG_MARKERS. The second one was enabled CONFIG_MARKERS. I downloaded the original hackbench from the following URL: http://devresources.linux-foundation.org/craiger/hackbench/src/hackbench.c I ran hackbench 5 times in each condition and calculated the average and difference between the kernels. The parameter of hackbench: every 50 from 50 to 800 The number of CPUs of the server: 2, 4, and 8 Below is the results. As you can see, major performance regression wasn't found in any case. Even if number of processes increases, differences between marker-enabled kernel and marker- disabled kernel doesn't increase. Moreover, if number of CPUs increases, the differences doesn't increase either. Curiously, marker-enabled kernel is better than marker-disabled kernel in more than half cases, although I guess it comes from the difference of memory access pattern. * 2 CPUs Number of | without | with | diff | diff | processes | Marker [Sec] | Marker [Sec] | [Sec] | [%] | -------------------------------------------------------------- 50 | 4.811 | 4.872 | +0.061 | +1.27 | 100 | 9.854 | 10.309 | +0.454 | +4.61 | 150 | 15.602 | 15.040 | -0.562 | -3.6 | 200 | 20.489 | 20.380 | -0.109 | -0.53 | 250 | 25.798 | 25.652 | -0.146 | -0.56 | 300 | 31.260 | 30.797 | -0.463 | -1.48 | 350 | 36.121 | 35.770 | -0.351 | -0.97 | 400 | 42.288 | 42.102 | -0.186 | -0.44 | 450 | 47.778 | 47.253 | -0.526 | -1.1 | 500 | 51.953 | 52.278 | +0.325 | +0.63 | 550 | 58.401 | 57.700 | -0.701 | -1.2 | 600 | 63.334 | 63.222 | -0.112 | -0.18 | 650 | 68.816 | 68.511 | -0.306 | -0.44 | 700 | 74.667 | 74.088 | -0.579 | -0.78 | 750 | 78.612 | 79.582 | +0.970 | +1.23 | 800 | 85.431 | 85.263 | -0.168 | -0.2 | -------------------------------------------------------------- * 4 CPUs Number of | without | with | diff | diff | processes | Marker [Sec] | Marker [Sec] | [Sec] | [%] | -------------------------------------------------------------- 50 | 2.586 | 2.584 | -0.003 | -0.1 | 100 | 5.254 | 5.283 | +0.030 | +0.56 | 150 | 8.012 | 8.074 | +0.061 | +0.76 | 200 | 11.172 | 11.000 | -0.172 | -1.54 | 250 | 13.917 | 14.036 | +0.119 | +0.86 | 300 | 16.905 | 16.543 | -0.362 | -2.14 | 350 | 19.901 | 20.036 | +0.135 | +0.68 | 400 | 22.908 | 23.094 | +0.186 | +0.81 | 450 | 26.273 | 26.101 | -0.172 | -0.66 | 500 | 29.554 | 29.092 | -0.461 | -1.56 | 550 | 32.377 | 32.274 | -0.103 | -0.32 | 600 | 35.855 | 35.322 | -0.533 | -1.49 | 650 | 39.192 | 38.388 | -0.804 | -2.05 | 700 | 41.744 | 41.719 | -0.025 | -0.06 | 750 | 45.016 | 44.496 | -0.520 | -1.16 | 800 | 48.212 | 47.603 | -0.609 | -1.26 | -------------------------------------------------------------- * 8 CPUs Number of | without | with | diff | diff | processes | Marker [Sec] | Marker [Sec] | [Sec] | [%] | -------------------------------------------------------------- 50 | 2.094 | 2.072 | -0.022 | -1.07 | 100 | 4.162 | 4.273 | +0.111 | +2.66 | 150 | 6.485 | 6.540 | +0.055 | +0.84 | 200 | 8.556 | 8.478 | -0.078 | -0.91 | 250 | 10.458 | 10.258 | -0.200 | -1.91 | 300 | 12.425 | 12.750 | +0.325 | +2.62 | 350 | 14.807 | 14.839 | +0.032 | +0.22 | 400 | 16.801 | 16.959 | +0.158 | +0.94 | 450 | 19.478 | 19.009 | -0.470 | -2.41 | 500 | 21.296 | 21.504 | +0.208 | +0.98 | 550 | 23.842 | 23.979 | +0.137 | +0.57 | 600 | 26.309 | 26.111 | -0.198 | -0.75 | 650 | 28.705 | 28.446 | -0.259 | -0.9 | 700 | 31.233 | 31.394 | +0.161 | +0.52 | 750 | 34.064 | 33.720 | -0.344 | -1.01 | 800 | 36.320 | 36.114 | -0.206 | -0.57 | -------------------------------------------------------------- Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> Acked-by: 'Peter Zijlstra' <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge phase #5 (misc) of ↵Linus Torvalds2008-10-13
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip Merges oprofile, timers/hpet, x86/traps, x86/time, and x86/core misc items. * 'x86-core-v4-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (132 commits) x86: change early_ioremap to use slots instead of nesting x86: adjust dependencies for CONFIG_X86_CMOV dumpstack: x86: various small unification steps, fix x86: remove additional_cpus x86: remove additional_cpus configurability x86: improve UP kernel when CPU-hotplug and SMP is enabled dumpstack: x86: various small unification steps dumpstack: i386: make kstack= an early boot-param and add oops=panic dumpstack: x86: use log_lvl and unify trace formatting dumptrace: x86: consistently include loglevel, print stack switch dumpstack: x86: add "end" parameter to valid_stack_ptr and print_context_stack dumpstack: x86: make printk_address equal dumpstack: x86: move die_nmi to dumpstack_32.c traps: x86: finalize unification of traps.c traps: x86: make traps_32.c and traps_64.c equal traps: x86: various noop-changes preparing for unification of traps_xx.c traps: x86_64: use task_pid_nr(tsk) instead of tsk->pid in do_general_protection traps: i386: expand clear_mem_error and remove from mach_traps.h traps: x86_64: make io_check_error equal to the one on i386 traps: i386: use preempt_conditional_sti/cli in do_int3 ...
| *-. Merge branches 'oprofile-v2' and 'timers/hpet' into x86/core-v4Ingo Molnar2008-10-13
| |\ \
| | | * HPET: Remove spurious HPET busy warning message.David John2008-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On x86 systems with CONFIG_HPET_TIMER enabled, when the HPET driver (drivers/char/hpet.c) is loaded, an incorrect busy message is printed when the driver initializes since the HPET has already been allocated by the core timer code. Remove the warning message. Signed-off-by: David John <davidjon@xenontk.org> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * Merge commit 'v2.6.27' into timers/hpetIngo Molnar2008-10-10
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| | | * | x86, hpet: SB600 - remove HPET resources from PCI deviceJordan Crouse2008-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prevent the HPET resources from appearing in PCI device 14.0 which confuses the PCI resource engine. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * | Merge commit 'v2.6.27-rc6' into timers/hpetIngo Molnar2008-09-14
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| | | * | | x86: hpet: modify IXP400 quirk to enable interruptsAndreas Herrmann2008-09-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current quirk is incomplete. Some more chipset fiddling has to be done to enable HPET interrupts. This patch aims to do this. From my tests it seems to work faultlessly. But the official statement is that HPET is not supported on SB4X0. Users will still have to use hpet=force to enable it. Use it at your own risk. Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * | | hpet: /dev/hpet - fixes and cleanup, fixDavid Brownell2008-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix: On Thursday 31 July 2008, Ingo Molnar wrote: >   drivers/built-in.o: In function `hpet_alloc': >   : undefined reference to `__udivdi3' >   drivers/built-in.o: In function `hpet_alloc': >   : undefined reference to `__umoddi3' Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * | | hpet: /dev/hpet - fixes and cleanupDavid Brownell2008-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Minor /dev/hpet updates and bugfixes: * Remove dead code, mostly remnants of an incomplete/unusable kernel interface ... noted when addressing "sparse" warnings: + hpet_unregister() and a routine it calls + hpet_task and all references, including hpet_task_lock + hpet_data.hd_flags (and HPET_DATA_PLATFORM) * Correct and improve boot message: + displays *counter* (shared between comparators) bit width, not *timer* bit widths (which are often mixed) + relabel "timers" as "comparators"; this is less confusing, they are not independent like normal timers are (sigh) + display MHz not Hz; it's never less than 10 MHz. * Tighten and correct the userspace interface code + don't accidentally program comparators in 64-bit mode using 32-bit values ... always force comparators into 32-bit mode + provide the correct bit definition flagging comparators with periodic capability ... the ABI is unchanged * Update Documentation/hpet.txt + be more correct and current + expand description a bit + don't mention that now-gone kernel interface Plus, add a FIXME comment for something that could cause big trouble on systems with more capable HPETs than at least Intel seems to ship. It seems that few folk use this userspace interface; it's not very usable given the general lack of HPET IRQ routing. I'm told that the only real point of it any more is to mmap for fast timestamps; IMO that's handled better through the gettimeofday() vsyscall. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * | | Merge branch 'linus' into timers/hpetIngo Molnar2008-07-31
| | | |\ \ \
| | | * | | | documentation: move hpet.txt to timers/ subdirectoryRandy Dunlap2008-07-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move hpet.txt to Documentation/timers/ subdirectory. Add 00-INDEX to Documentation/timers/ subdirectory. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: tglx <tglx@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| | | * | | | x86: add PCI ID for 6300ESB force hpetJoe Buehler2008-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 00:1f.0 ISA bridge: Intel Corporation 6300ESB LPC Interface Controller (rev 02) 00:1f.0 Class 0601: 8086:25a1 (rev 02) kernel: pci 0000:00:1f.0: Force enabled HPET at 0xfed00000 kernel: hpet clockevent registered kernel: hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 kernel: hpet0: 3 64-bit timers, 14318180 Hz Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * | | | x86: add another PCI ID for ICH6 force-hpetKrzysztof Oledzki2008-06-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tested on Asus P5GDC-V $ lspci -n -n |grep ISA 00:1f.0 ISA bridge [0601]: Intel Corporation 82801FB/FR (ICH6/ICH6R) LPC Interface Bridge [8086:2640] (rev 03) Force enabled HPET at base address 0xfed00000 hpet clockevent registered hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 hpet0: 3 64-bit timers, 14318180 Hz Signed-off-by: Krzysztof Piotr Oledzki <ole@ans.pl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | | * | | | Merge branch 'linus' into timers/hpetIngo Molnar2008-06-16
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| | | * | | | | x86: get irq for hpet timerKevin Hao2008-06-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | HPET timer's IRQ is 0 by default. So we have to select which irq will be used by these timers. We wait to set the timer's irq until we really open it in order to reduce the chance of conflicting with other device. Signed-off-by: Kevin Hao <kexin.hao@windriver.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | Merge branch 'linus' into oprofile-v2Ingo Molnar2008-10-13
| | |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/kernel/apic_32.c arch/x86/oprofile/nmi_int.c include/linux/pci_ids.h
| | * | | | | | | x86/oprofile: reanaming op_model_athlon.c to op_model_amd.cRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | oprofile: fix printk in cpu_buffer.cRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Robert Richter <robert.richter@amd.com> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: add CONFIG_OPROFILE_IBS optionRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Robert Richter <robert.richter@amd.com> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86: apic: changing export symbols to *_GPLRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fits better here. Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86: apic: export symbols for extended interrupt LVT functionsRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds EXPORT_SYMBOLs to allow OProfile to be built as module. Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: op_model_athlon.c: fix counter reset when reenabling IBS OPRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: macro definition cleanup in op_model_athlon.cRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | OProfile: fix IBS build error for UPRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | OProfile: enable IBS for AMD CPUsRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | OProfile: fix setup_ibs_files() function interfaceRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | OProfile: on_each_cpu(): kill unused retry parameterRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | OProfile: Fix build error in op_model_athlon.cRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | OProfile: change IBS interrupt initializationRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: separating the IBS handlerRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: add IBS support for AMD CPUs, model specific codeBarry Kasindorf2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patchset supports the new profiling hardware available in the latest AMD CPUs in the oProfile driver. Signed-off-by: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: add IBS support for AMD CPUs, IBS buffer handling routinesBarry Kasindorf2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patchset supports the new profiling hardware available in the latest AMD CPUs in the oProfile driver. Signed-off-by: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | OProfile: add IBS code macrosRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | OProfile: moving increment_tail() in buffer_sync.cRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | drivers/oprofile: coding style fixes in buffer_sync.cRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: renaming athlon_*() into op_amd_*()Robert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These functions contain code for all AMD CPUs. The new names fit better. Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: Minor changes in op_model_athlon.cRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86/oprofile: introduce model specific init/exit functionsRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements model specific OProfile init/exit functions for x86 CPUs. Though there is more rework needed at the initialization code, this new introduced functions allow it to keep model specific code in the corresponding op_model_*.c files. The function interface is the same as for oprofile_arch_init/exit(). Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | oprofile: Add support for AMD Family 11hBarry Kasindorf2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch add support for AMD Family 11h CPUs. Signed-off-by: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86: apic_*.c: add description to AMD's extended LVT functionsRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | | | x86: add PCI IDs for AMD Barcelona PCI devicesRobert Richter2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | x86: change early_ioremap to use slots instead of nestingYinghai Lu2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | so we could remove the requirement that one needs to call early_iounmap() in exactly reverse order of early_ioremap(). Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | x86: adjust dependencies for CONFIG_X86_CMOVJan Beulich2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | dumpstack: x86: various small unification steps, fixAlexander van Heukelum2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After "dumpstack: x86: various small unification steps", the assembler gives the following compile error. The error is in dumpstack_64.c. {standard input}: Assembler messages: {standard input}:720: Error: Incorrect register `%rbx' used with `l' suffix {standard input}:1340: Error: Incorrect register `%r12' used with `l' suffix Indeed the suffix in get_bp() was wrong. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | x86: remove additional_cpusThomas Gleixner2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | remove remainder of additional_cpus logic. We now just listen to the disabled_cpus value like we did for years. disabled_cpus is always >= 0 so no need for an extra check. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | x86: remove additional_cpus configurabilityIngo Molnar2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | additional_cpus=<x> parameter is dangerous and broken: for example if we boot additional_cpus=-2 on a stock dual-core system it will crash the box on bootup. So reduce the maze of code a bit by removingthe user-configurability angle. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | x86: improve UP kernel when CPU-hotplug and SMP is enabledThomas Gleixner2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | num_possible_cpus() can be > 1 when disabled CPUs have been accounted. Disabled CPUs are not in the cpu_present_map, so we can use num_present_cpus() as a safe indicator to switch to UP alternatives. Reported-by: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | dumpstack: x86: various small unification stepsAlexander van Heukelum2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - define STACKSLOTS_PER_LINE and use it - define get_bp macro to hide the %%ebp/%%rbp difference - i386: check task==NULL in dump_trace, like x86_64 - i386: show_trace(NULL, ...) uses current automatically - x86_64: use [#%d] for die_counter, like i386 - whitespace and comments Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | dumpstack: i386: make kstack= an early boot-param and add oops=panicAlexander van Heukelum2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - make kstack= and early_param - add oops=panic, setting panic_on_oops Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-26 21:36:09 -0500