- 27 6月, 2009 2 次提交
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由 Ingo Molnar 提交于
Allow a no-counters run. This can be useful to measure just elapsed wall-clock time - or to assess the raw overhead of perf stat itself, without running any counters. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Vince Weaver reported that there's a handful of #ifdef __MINGW32__ sections in the code. Remove them as they are in essence dead code - as unlike upstream Git, the perf tool is unlikely to be ported to Windows. Reported-by: NVince Weaver <vince@deater.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 26 6月, 2009 14 次提交
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由 Peter Zijlstra 提交于
Complete the counter swap by indeed switching the times too and updating the userpage after modifying the counter values. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1246014623.31755.195.camel@twins> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Frederic Weisbecker 提交于
Use the newly created callchains radix tree to gather the chains stats from the recorded events and then print the callchains for all of them, sorted by hits, using the "-c" parameter with perf report. Example: 66.15% [k] atm_clip_exit 63.08% 0xffffffffffffff80 0xffffffff810196a8 0xffffffff810c14c8 0xffffffff8101a79c 0xffffffff810194f3 0xffffffff8106ab7f 0xffffffff8106abe5 0xffffffff8106acde 0xffffffff8100d94b 0xffffffff8153e7ea [...] 1.54% 0xffffffffffffff80 0xffffffff810196a8 0xffffffff810c14c8 0xffffffff8101a79c [...] Symbols are not yet resolved. Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1246026481-8314-3-git-send-email-fweisbec@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Frederic Weisbecker 提交于
We plan to display the callchains depending on some user-configurable parameters. To gather the callchains stats from the recorded stream in a fast way, this patch introduces an ad hoc radix tree adapted for callchains and also a rbtree to sort these callchains once we have gathered every events from the stream. Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1246026481-8314-2-git-send-email-fweisbec@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Frederic Weisbecker 提交于
Building latest perfcounter fails on the following error: builtin-record.c: In function ‘create_counter’: builtin-record.c:451: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result make: *** [builtin-record.o] Erreur 1 Just check if we successfully read the perf file descriptor. Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1245961287-5327-1-git-send-email-fweisbec@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jaswinder Singh Rajput 提交于
Add 'l1d' and 'l1i' aliases again as shortcuts - just dont make them the primary display alias. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1245945462.9157.11.camel@hpdv5.satnam> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Provide the basic infrastructure to provide per task stats. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Now that we can collect per task statistics, add modes that make use of that facility. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
The PERF_EVENT_READ implementation made me realize we don't actually need the sample_type int the output sample, since we already have that in the perf_counter_attr information. Therefore, remove the PERF_EVENT_MISC_OVERFLOW bit and the event->type overloading, and imply put counter overflow samples in a PERF_EVENT_SAMPLE type. This also fixes the issue that event->type was only 32-bit and sample_type had 64 usable bits. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
With the introduction of PERF_EVENT_READ we have the possibility to provide accurate counter values for individual tasks in a task hierarchy. However, due to the lazy context switching used for similar counter contexts our current per task counts are way off. In order to maintain some of the lazy switch benefits we don't disable it out-right, but simply iterate the active counters and flip the values between the contexts. This only reads the counters but does not need to reprogram the full PMU. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Provide a read() like event which can be used to log the counter value at specific sites such as child->parent folding on exit. In order to be useful, we log the counter parent ID, not the actual counter ID, since userspace can only relate parent IDs to perf_counter_attr constructs. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Update the mmap control page with the needed information to use the userspace RDPMC instruction for self monitoring. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Add the needed time scale to the self-profile mmap information. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Since there are two distinct sections to the control page, move them apart so that possible extentions don't overlap. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Create a structured file format that includes the full perf_counter_attr and all its relevant counter IDs so that the reporting program has full information. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 25 6月, 2009 4 次提交
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由 Jaswinder Singh Rajput 提交于
Added new alias for events. On AMD box: $ ./perf stat -e l1d -e l1d-misses -e l1d-write -e l1d-prefetch -e l1d-prefetch-miss -e l1i -e l1i-misses -e l1i-prefetch -e l2 -e l2-misses -e l2-write -e dtlb -e dtlb-misses -e itlb -e itlb-misses -e bpu -e bpu-misses -- ls -lR /usr/include/ > /dev/null Before : Performance counter stats for 'ls -lR /usr/include/': 248064467 L1-data-Cache-Load-Referencees (scaled from 23.27%) 1001433 L1-data-Cache-Load-Misses (scaled from 23.34%) 153691 L1-data-Cache-Store-Referencees (scaled from 23.34%) 423248 L1-data-Cache-Prefetch-Referencees (scaled from 23.33%) 302138 L1-data-Cache-Prefetch-Misses (scaled from 23.25%) 251217546 L1-instruction-Cache-Load-Referencees (scaled from 23.25%) 5757005 L1-instruction-Cache-Load-Misses (scaled from 23.23%) 93435 L1-instruction-Cache-Prefetch-Referencees (scaled from 23.24%) 6496073 L2-Cache-Load-Referencees (scaled from 23.32%) 609485 L2-Cache-Load-Misses (scaled from 23.45%) 6876991 L2-Cache-Store-Referencees (scaled from 23.71%) 248922840 Data-TLB-Cache-Load-Referencees (scaled from 23.94%) 5828386 Data-TLB-Cache-Load-Misses (scaled from 24.17%) 257613506 Instruction-TLB-Cache-Load-Referencees (scaled from 24.20%) 6833 Instruction-TLB-Cache-Load-Misses (scaled from 23.88%) 109043606 Branch-Cache-Load-Referencees (scaled from 23.64%) 5552296 Branch-Cache-Load-Misses (scaled from 23.42%) 0.413702461 seconds time elapsed. After : Peformance counter stats for 'ls -lR /usr/include/': 266590464 L1-d$-loads (scaled from 23.03%) 1222273 L1-d$-load-misses (scaled from 23.58%) 146204 L1-d$-stores (scaled from 23.83%) 406344 L1-d$-prefetches (scaled from 24.09%) 283748 L1-d$-prefetch-misses (scaled from 24.10%) 249650965 L1-i$-loads (scaled from 23.80%) 3353961 L1-i$-load-misses (scaled from 23.82%) 104599 L1-i$-prefetches (scaled from 23.68%) 4836405 LLC-loads (scaled from 23.67%) 498214 LLC-load-misses (scaled from 23.66%) 4953994 LLC-stores (scaled from 23.64%) 243354097 dTLB-loads (scaled from 23.77%) 6468584 dTLB-load-misses (scaled from 23.74%) 249719549 iTLB-loads (scaled from 23.25%) 5060 iTLB-load-misses (scaled from 23.00%) 112343016 branch-loads (scaled from 22.76%) 5528876 branch-load-misses (scaled from 22.54%) 0.427154051 seconds time elapsed. Reported-by : Ingo Molnar <mingo@elte.hu> Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245934522.5308.39.camel@hpdv5.satnam> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jaswinder Singh Rajput 提交于
Made new table for cache operartion stat 'hw_cache_stat' as: L1I : Read and prefetch only ITLB and BPU : Read-only introduce is_cache_op_valid() for cache operation validity And checks for valid cache operations. Reported-by : Ingo Molnar <mingo@elte.hu> Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245930367.5308.33.camel@localhost.localdomain> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Johannes Weiner 提交于
Looking backward for the first space from the end of a line in /proc/pid/maps does not find the start of the pathname of the mapped file if it contains a space. Since the only slashes we have in this file occur in the (absolute!) pathname column of file mappings, looking for the first slash in a line is a safe method to find the name. Signed-off-by: NJohannes Weiner <hannes@cmpxchg.org> Cc: Stefani Seibold <stefani@seibold.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090624190835.GA25548@cmpxchg.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Much of perf's libraries comes from the Git project. I noticed that the files (in tools/perf/util/*.[ch] and elsewhere) are quite spartan wrt. credits, so lets add a CREDITS file that includes an (incomplete!) list of main contributors. Thanks guys, these libraries are really useful. Special thanks go to Johannes Schindelin and Junio C Hamano for coming up with this list. List-Composed-By: NJohannes Schindelin <Johannes.Schindelin@gmx.de> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 24 6月, 2009 4 次提交
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由 Jaswinder Singh Rajput 提交于
Remove dead code and do some code alignment. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245847774.2681.2.camel@ht.satnam> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Yong Wang 提交于
Previous code made an assumption that the power on value of global control MSR has enabled all fixed and general purpose counters properly. However, this is not the case for certain Intel processors, such as Atom - and it might also be firmware dependent. Each enable bit in IA32_PERF_GLOBAL_CTRL is AND'ed with the enable bits for all privilege levels in the respective IA32_PERFEVTSELx or IA32_PERF_FIXED_CTR_CTRL MSRs to start/stop the counting of respective counters. Counting is enabled if the AND'ed results is true; counting is disabled when the result is false. The end result is that all fixed counters are always disabled on Atom processors because the assumption is just invalid. Fix this by not initializing the ctrl-mask out of the global MSR, but setting it to perf_counter_mask. Reported-by: NStephane Eranian <eranian@googlemail.com> Signed-off-by: NYong Wang <yong.y.wang@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20090624021324.GA2788@ywang-moblin2.bj.intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Roel Kluin 提交于
size_t res cannot be less than 0 - fread returns 0 on error. [ Updated by: René Scharfe <rene.scharfe@lsrfire.ath.cx> ] Reported-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NRoel Kluin <roel.kluin@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Junio C Hamano <gitster@pobox.com> LKML-Reference: <4A3FB479.2090902@lsrfire.ath.cx> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jaswinder Singh Rajput 提交于
Error message should use stderr for verbose (-v), otherwise message will be lost for: $ ./perf stat -v <cmd> > /dev/null For example on AMD bus-cycles event is not available so now it looks like: $ ./perf stat -v -e bus-cycles ls > /dev/null Error: counter 0, sys_perf_counter_open() syscall returned with -1 (Invalid argument) Performance counter stats for 'ls': <not counted> bus-cycles 0.006765877 seconds time elapsed. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245757369.3776.1.camel@localhost.localdomain> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 23 6月, 2009 6 次提交
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由 Ingo Molnar 提交于
Reported-by: NBrice Goglin <Brice.Goglin@inria.fr> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
We don't need to add usage counts for swcounter and attr usage models for inherited counters since the parent counter will always have one, which suffices to generate the needed output. This avoids up to 3 global atomic increments per inherited counter. LKML-Reference: <new-submission> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Teach perf_counter_alloc() about inheritance so that we can optimize the inherit path in the next patch. Remove the child_counter->atrr.inherit = 1 line because the only way to get there is if parent_counter->attr.inherit == 1 and we copy the attrs. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Similar to tracepoints, use an enable variable to reduce overhead when unused. Only look for a counter of a particular event type when we know there is at least one in the system. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Martin Schwidefsky reported "perf report" symbol resolution problems on S390. Since we only report MMAP, not MUNMAP, we have to deal with overlapping maps. We used to simply throw out the old map on the assumption whole maps got unmapped. This obviously doesn't deal with partial unmaps. However it appears some dynamic linkers do fancy partial unmaps (s390), so do something more elaborate and truncate the old maps, only removing them when they've been fully covered. This resolves (part of) the S390 symbol resolution problems. Reported-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Tested-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jaswinder Singh Rajput 提交于
-l is not supported, it should be -S for scale. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245703959.6167.16.camel@localhost.localdomain> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 22 6月, 2009 4 次提交
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由 Jaswinder Singh Rajput 提交于
"faults" should be alias for "page-faults" Also fixed alignment and 80 characters issue Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245683846.12092.1.camel@localhost.localdomain> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
Print more symbol relocation related info under -vv. Signed-off-by: NPeter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jaswinder Singh Rajput 提交于
By introducing alias member in event_symbol : 1. duplicate lines are removed, like: cpu-cycles and cycles branch-instructions and branches context-switches and cs cpu-migrations and migrations 2. We can also add alias for another events. Now ./perf list looks like : List of pre-defined events (to be used in -e): cpu-cycles OR cycles [Hardware event] instructions [Hardware event] cache-references [Hardware event] cache-misses [Hardware event] branch-instructions OR branches [Hardware event] branch-misses [Hardware event] bus-cycles [Hardware event] cpu-clock [Software event] task-clock [Software event] page-faults [Software event] faults [Software event] minor-faults [Software event] major-faults [Software event] context-switches OR cs [Software event] cpu-migrations OR migrations [Software event] rNNN [raw hardware event descriptor] Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245669268.17153.8.camel@localhost.localdomain> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jaswinder Singh Rajput 提交于
Define separate declarations for H/W and S/W events to: 1. Shorten name to save some space so that we can add more members 2. Fix alignment 3. Avoid declaring HARDWARE/SOFTWARE again and again. Removed unused CR(x, y) Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1245669194.17153.6.camel@localhost.localdomain> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 21 6月, 2009 6 次提交
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由 Ingo Molnar 提交于
Lucas De Marchi reported that perf report and perf annotate displays mismatching profile if a perf.data is analyzed on an older kernel - even if the correct vmlinux is specified via the -k option. The reason is the fallback path in util/symbol.c:dso__load_kernel(): int dso__load_kernel(struct dso *self, const char *vmlinux, symbol_filter_t filter, int verbose) { int err = -1; if (vmlinux) err = dso__load_vmlinux(self, vmlinux, filter, verbose); if (err) err = dso__load_kallsyms(self, filter, verbose); return err; } dso__load_vmlinux() returns negative on error, but on success it returns the number of symbols loaded - which confuses the function to load the kallsyms. This is normally harmless, as reporting is usually performed on the same kernel that is analyzed - but if there's a mismatch then we load the wrong kallsyms and create a non-sensical symbol tree. The fix is to only fall back to kallsyms on errors. Reported-by: NLucas De Marchi <lucas.de.marchi@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jaswinder Singh Rajput 提交于
Fix AMD's Data Cache Refills from System event. After this patch : ./tools/perf/perf stat -e l1d -e l1d-misses -e l1d-write -e l1d-prefetch -e l1d-prefetch-miss -e l1i -e l1i-misses -e l1i-prefetch -e l2 -e l2-misses -e l2-write -e dtlb -e dtlb-misses -e itlb -e itlb-misses -e bpu -e bpu-misses ls /dev/ > /dev/null Performance counter stats for 'ls /dev/': 2499484 L1-data-Cache-Load-Referencees (scaled from 3.97%) 70347 L1-data-Cache-Load-Misses (scaled from 7.30%) 9360 L1-data-Cache-Store-Referencees (scaled from 8.64%) 32804 L1-data-Cache-Prefetch-Referencees (scaled from 17.72%) 7693 L1-data-Cache-Prefetch-Misses (scaled from 22.97%) 2180945 L1-instruction-Cache-Load-Referencees (scaled from 28.48%) 14518 L1-instruction-Cache-Load-Misses (scaled from 35.00%) 2405 L1-instruction-Cache-Prefetch-Referencees (scaled from 34.89%) 71387 L2-Cache-Load-Referencees (scaled from 34.94%) 18732 L2-Cache-Load-Misses (scaled from 34.92%) 79918 L2-Cache-Store-Referencees (scaled from 36.02%) 1295294 Data-TLB-Cache-Load-Referencees (scaled from 35.99%) 30896 Data-TLB-Cache-Load-Misses (scaled from 33.36%) 1222030 Instruction-TLB-Cache-Load-Referencees (scaled from 29.46%) 357 Instruction-TLB-Cache-Load-Misses (scaled from 20.46%) 530888 Branch-Cache-Load-Referencees (scaled from 11.48%) 8638 Branch-Cache-Load-Misses (scaled from 5.09%) 0.011295149 seconds time elapsed. Earlier it always shows value 0. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> LKML-Reference: <1245484165.3102.6.camel@localhost.localdomain> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Johannes Weiner 提交于
da456f14 "page allocator: do not disable interrupts in free_page_mlock()" moved the PG_mlocked clearing after the flag sanity checking which makes mlocked pages always trigger 'bad page'. Fix this by clearing the bit up front. Reported--and-debugged-by: NPeter Chubb <peter.chubb@nicta.com.au> Signed-off-by: NJohannes Weiner <hannes@cmpxchg.org> Acked-by: NMel Gorman <mel@csn.ul.ie> Tested-by: NMaxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
The discussion about using "access_ok()" in get_user_pages_fast() (see commit 7f818906: "x86: don't use 'access_ok()' as a range check in get_user_pages_fast()" for details and end result), made us notice that x86-64 was really being very sloppy about virtual address checking. So be way more careful and straightforward about masking x86-64 virtual addresses: - All the VIRTUAL_MASK* variants now cover half of the address space, it's not like we can use the full mask on a signed integer, and the larger mask just invites mistakes when applying it to either half of the 48-bit address space. - /proc/kcore's kc_offset_to_vaddr() becomes a lot more obvious when it transforms a file offset into a (kernel-half) virtual address. - Unify/simplify the 32-bit and 64-bit USER_DS definition to be based on TASK_SIZE_MAX. This cleanup and more careful/obvious user virtual address checking also uncovered a buglet in the x86-64 implementation of strnlen_user(): it would do an "access_ok()" check on the whole potential area, even if the string itself was much shorter, and thus return an error even for valid strings. Our sloppy checking had hidden this. So this fixes 'strnlen_user()' to do this properly, the same way we already handled user strings in 'strncpy_from_user()'. Namely by just checking the first byte, and then relying on fault handling for the rest. That always works, since we impose a guard page that cannot be mapped at the end of the user space address space (and even if we didn't, we'd have the address space hole). Acked-by: NIngo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Piggin <npiggin@suse.de> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
Merge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq, irq.h: Fix kernel-doc warnings genirq: fix comment to say IRQ_WAKE_THREAD
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由 Linus Torvalds 提交于
Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (49 commits) perfcounter: Handle some IO return values perf_counter: Push perf_sample_data through the swcounter code perf_counter tools: Define and use our own u64, s64 etc. definitions perf_counter: Close race in perf_lock_task_context() perf_counter, x86: Improve interactions with fast-gup perf_counter: Simplify and fix task migration counting perf_counter tools: Add a data file header perf_counter: Update userspace callchain sampling uses perf_counter: Make callchain samples extensible perf report: Filter to parent set by default perf_counter tools: Handle lost events perf_counter: Add event overlow handling fs: Provide empty .set_page_dirty() aop for anon inodes perf_counter: tools: Makefile tweaks for 64-bit powerpc perf_counter: powerpc: Add processor back-end for MPC7450 family perf_counter: powerpc: Make powerpc perf_counter code safe for 32-bit kernels perf_counter: powerpc: Change how processor-specific back-ends get selected perf_counter: powerpc: Use unsigned long for register and constraint values perf_counter: powerpc: Enable use of software counters on 32-bit powerpc perf_counter tools: Add and use isprint() ...
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