- 25 1月, 2010 1 次提交
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由 Suravee Suthikulpanit 提交于
With multiplexing enabled oprofile crashs when profiling more than 28 events. This patch fixes this. Signed-off-by: NSuravee Suthikulpanit <suravee.suthikulpanit@amd.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 20 7月, 2009 16 次提交
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由 Robert Richter 提交于
This patch adds a check for the availability of a counter. A virtual counter is used only if its physical counter is not reserved. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch implements a common x86 function to convert virtual counter numbers to physical. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch moves the multiplexing switch counter from x86 code to common oprofile statistic variables. Now the value will be available and usable for all architectures. The initialization and incrementation also moved to common code. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
To setup a counter for all cpus, its structure is cloned from cpu 0. This patch implements mux_clone() to do this part for multiplexing data. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch checks if the model supports multiplexing. Only then multiplexing will be enabled. The code is added to the common x86 initialization. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
The check is used to prevent running multiplexing code for models not supporting multiplexing. Before, the code was running but without effect. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
Models that do not yet support counter multiplexing have to setup num_virt_counters. This patch implements the setup from num_counters if num_virt_counters is not set. Thus, num_virt_counters must be setup only for multiplexing support. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch removes the const qualifier from struct op_x86_model_spec to make model parameters changable. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch moves some code in nmi_int.c to get a single separate multiplexing code section. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch moves some code in nmi_int.c to get a single separate multiplexing code section. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch moves some code in nmi_int.c to get a single separate multiplexing code section. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch implements nmi_setup_mux() and nmi_shutdown_mux() functions to setup/shutdown multiplexing. Multiplexing code in nmi_int.c is now much more separated. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This new function translates physical to virtual counter numbers. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
Variable switch_index must be initialized for each cpu. This patch fixes the initialization by moving it to the per-cpu init function nmi_cpu_setup(). Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
__get_cpu_var() calls smp_processor_id(). When the cpu id is already known, instead use per_cpu() to avoid generating the id again. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Jason Yeh 提交于
The number of hardware counters is limited. The multiplexing feature enables OProfile to gather more events than counters are provided by the hardware. This is realized by switching between events at an user specified time interval. A new file (/dev/oprofile/time_slice) is added for the user to specify the timer interval in ms. If the number of events to profile is higher than the number of hardware counters available, the patch will schedule a work queue that switches the event counter and re-writes the different sets of values into it. The switching mechanism needs to be implemented for each architecture to support multiplexing. This patch only implements AMD CPU support, but multiplexing can be easily extended for other models and architectures. There are follow-on patches that rework parts of this patch. Signed-off-by: NJason Yeh <jason.yeh@amd.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 14 7月, 2009 2 次提交
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由 Robert Richter 提交于
This patch fixes whitespace changes of code that will be touched in follow-on patches. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch removes the function nmi_save_registers(). Per-cpu code is now executed only in the function nmi_cpu_setup(). Also, it renames the per-cpu function nmi_restore_registers() to nmi_cpu_restore_registers(). Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 10 7月, 2009 1 次提交
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由 Robert Richter 提交于
The short name of the achitecture is 'arch_perfmon'. This patch changes the kernel parameter to use this name. Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: NRobert Richter <robert.richter@amd.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 13 6月, 2009 1 次提交
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由 Robert Richter 提交于
Commit: e419294e x86/oprofile: moving arch_perfmon counter setup to op_x86_model_spec.init introduced a bug in the initialization of core_i7 leading to the incorrect model setup to &op_ppro_spec. This patch fixes this. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 12 6月, 2009 5 次提交
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由 Robert Richter 提交于
The patch removes some local variables in these functions. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch removes struct op_saved_msr and replaces it by an u64 variable. This makes code easier and it is possible to use 64 bit MSR functions. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
This patch introduces op_x86_get_ctrl() to calculate the value of the performance control register. This is generic code usable for all models. The event and reserved masks are model specific and stored in struct op_x86_model_spec. 64 bit MSR functions are used now. The patch removes many hard to read macros used for ctrl calculation. The function op_x86_get_ctrl() is common code and the first step to further merge performance counter implementations for x86 models. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
In follow-on patches the setup_ctrs() functions will need data that describes the model. This patch extends the function argument list to pass a pointer of the model to these function. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Robert Richter 提交于
Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 11 6月, 2009 1 次提交
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由 Robert Richter 提交于
The function arch_perfmon_init() in nmi_int.c is model specific. This patch moves it to op_model_ppro.c by using the init function pointer in struct op_x86_model_spec. Cc: Andi Kleen <ak@linux.intel.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 08 5月, 2009 4 次提交
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由 Robert Richter 提交于
This patch removes module_param oprofile.force_arch_perfmon and introduces oprofile.cpu_type=archperfmon instead. This new parameter can be reused for other models and architectures. Currently only archperfmon is supported. Cc: Andi Kleen <ak@linux.intel.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Andi Kleen 提交于
The registers are about the same as other Family 6 CPUs so we only need to add detection. I'm not completely happy with calling Nehalem Core i7 because there will be undoubtedly other Nehalem based CPUs in the future with different marketing names, but it's the best we got for now. Requires updated oprofile userland for the new event files. If you don't want to update right now you can also use oprofile.force_arch_perfmon=1 (added in the next patch) with 0.9.4 Signed-off-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Andi Kleen 提交于
There are no new P4s and the oprofile code knows about all existing ones, so we don't really need the p4force option anymore. Remove it. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Andi Kleen 提交于
This re-adds the force_arch_perfmon option that was in the original arch perfmon patchkit. Originally this was rejected in favour of a generalized perfmon=name option, but it turned out implementing the later in a reliable way is hard (and it would have been easy to crash the kernel if a user gets it wrong) But now Atom and Core i7 support being readded a user would need to update their oprofile userland to beyond 0.9.4 to use oprofile again on Atom or Core i7. To avoid this problem readd the force_arch_perfmon option. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 18 2月, 2009 1 次提交
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由 Ingo Molnar 提交于
Impact: cleanup Remove genapic.h and remove all references to it. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 17 2月, 2009 1 次提交
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由 Ingo Molnar 提交于
- make oprofile build - select X86_X2APIC from X86_UV - it relies on it - export genapic for oprofile modular build Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 05 2月, 2009 1 次提交
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由 Mike Galbraith 提交于
With oprofile as a module, and unloaded by profiling script, both oprofile and kerneltop work fine.. unless you leave kerneltop running when you start profiling, then you may see badness. Signed-off-by: NMike Galbraith <efault@gmx.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 04 12月, 2008 1 次提交
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由 William Cohen 提交于
Alan Jenkins wrote: > This is on an EeePC 701, /proc/cpuinfo as attached. > > Is this expected? Will the next release work? > > Thanks, Alan > > # opcontrol --setup --no-vmlinux > cpu_type 'unset' is not valid > you should upgrade oprofile or force the use of timer mode > > # opcontrol -v > opcontrol: oprofile 0.9.4 compiled on Nov 29 2008 22:44:10 > > # cat /dev/oprofile/cpu_type > i386/p6 > # uname -r > 2.6.28-rc6eeepc Hi Alan, Looking at the kernel driver code for oprofile it can return the "i386/p6" for the cpu_type. However, looking at the user-space oprofile code there isn't the matching entry in libop/op_cpu_type.c or the events/unit_mask files in events/i386 directory. The Intel AP-485 says this is a "Intel Pentium M processor model D". Seems like the oprofile kernel driver should be identifying the processor as "i386/p6_mobile" The driver identification code doesn't look quite right in nmi_init.c http://git.kernel.org/?p=linux/kernel/git/sfr/linux-next.git;a=blob;f=arch/x86/oprofile/nmi_int.c;h=022cd41ea9b4106e5884277096e80e9088a7c7a9;hb=HEAD has: 409 case 10 ... 13: 410 *cpu_type = "i386/p6"; 411 break; Referring to the Intel AP-485: case 10 and 11 should produce "i386/piii" case 13 should produce "i386/p6_mobile" I didn't see anything for case 12. Something like the attached patch. I don't have a celeron machine to verify that changes in this area of the kernel fix thing. -Will Signed-off-by: NWilliam Cohen <wcohen@redhat.com> Tested-by: NAlan Jenkins <alan-jenkins@tuffmail.co.uk> Acked-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 16 10月, 2008 1 次提交
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由 Robert Richter 提交于
No functional changes. The intension is to remove static function declarations. Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 14 10月, 2008 2 次提交
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由 Andi Kleen 提交于
Newer Intel CPUs (Core1+) have support for architectural events described in CPUID 0xA. See the IA32 SDM Vol3b.18 for details. The advantage of this is that it can be done without knowing about the specific CPU, because the CPU describes by itself what performance events are supported. This is only a fallback because only a limited set of 6 events are supported. This allows to do profiling on Nehalem and on Atom systems (later not tested) This patch implements support for that in oprofile's Intel Family 6 profiling module. It also has the advantage of supporting an arbitary number of events now as reported by the CPU. Also allow arbitary counter widths >32bit while we're at it. Requires a patched oprofile userland to support the new architecture. v2: update for latest oprofile tree remove force_arch_perfmon Signed-off-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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由 Andi Kleen 提交于
This essentially reverts Linus' earlier 4b9f12a3 commit. Nehalem is not core_2, so it shouldn't be reported as such. However with the earlier arch perfmon patch it will fall back to arch perfmon mode now, so there is no need to fake it as core_2. The only drawback is that Linus will need to patch the arch perfmon support into his oprofile binary now, but I think he can do that. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NRobert Richter <robert.richter@amd.com>
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- 24 9月, 2008 1 次提交
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由 Robert Richter 提交于
Reverting commit 1a960b40 for the main branch. Multiplexing will be tracked on a separate feature branch. Conflicts: arch/x86/oprofile/nmi_int.c
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- 22 9月, 2008 1 次提交
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由 Andrea Righi 提交于
Add __raw access before setting per cpu variable switch_index, to avoid the following BUG: [ 449.166827] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/6998 [ 449.166848] caller is op_nmi_init+0xf0/0x2b0 [oprofile] [ 449.166855] Pid: 6998, comm: modprobe Not tainted 2.6.27-rc5-mm1 #29 [ 449.166860] Call Trace: [ 449.166872] [<ffffffff80362d67>] debug_smp_processor_id+0xd7/0xe0 [ 449.166887] [<ffffffffa00181c0>] op_nmi_init+0xf0/0x2b0 [oprofile] [ 449.166902] [<ffffffffa0018000>] oprofile_init+0x0/0x60 [oprofile] [ 449.166915] [<ffffffffa00180a9>] oprofile_arch_init+0x9/0x30 [oprofile] [ 449.166928] [<ffffffffa001801e>] oprofile_init+0x1e/0x60 [oprofile] [ 449.166937] [<ffffffff8020903b>] _stext+0x3b/0x160 [ 449.166946] [<ffffffff80477985>] __mutex_unlock_slowpath+0xe5/0x190 [ 449.166955] [<ffffffff80262c1a>] trace_hardirqs_on_caller+0xca/0x140 [ 449.166965] [<ffffffff8026f7fc>] sys_init_module+0xdc/0x210 [ 449.166972] [<ffffffff8020b7cb>] system_call_fastpath+0x16/0x1b Signed-off-by: NAndrea Righi <righi.andrea@gmail.com> Acked-by: NRobert Richter <robert.richter@amd.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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