- 07 Apr, 2012 8 commits
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Arnaldo Carvalho de Melo authored
Using the same keystrokes as vim: / = search forward n = search next forward/backwards ? = search backwards Still needs to continue from start/end when not found, use HOME + / or END + ? for now. At some point we need a keybindings file to support ones favourite mode, erm, like EMACS, etc. Also we now need a 'h' window with all these keybindings. Requested-by: Andi Kleen <andi@firstfloor.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.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/n/tip-rv30xj2i258n0gwkzlu0c0bc@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Ashay Rane authored
This patch prints the number of samples and the count of performance events separately. This allows comparing performance of different applications with each other. Previously, the sample count was displayed against an 'Events:' heading. With this patch, the header now reads (for example): Samples: 5K of event 'instructions' Event count (approx.): 2993026545 The patch covers both the stdio and the browser interface. Signed-off-by: Ashay Rane <ashay.rane@tacc.utexas.edu> [ committer note: Fixed wrt e7f01d1e ] Link: http://lkml.kernel.org/n/tip-h4nfjm8msedlk8gxkzivfh5y@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
Now it is possible to press ENTER or -> (right arrow) on jump instructions to navigate to the offset it points to. More work needed to support <- to go back, i.e. a jump history. This is done just like the callq case, i.e. parsing objdump output lines, but should move to use Masami's disassembler at some point. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.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/n/tip-706qqe2xibeiocuabp39mby7@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
From the hit sorted rb_tree, so that we can use it in the upcoming jump instruction support. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.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/n/tip-44a7kl2atf9jxlg9npmotzdg@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
So that we can as well handle jumps. Later we'll move this to a proper intruction table, etc. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.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/n/tip-i98elvmix2cw6t8stu1iagfd@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
The lines in objdump have this format: ffffffff8126543f: jne ffffffff81265494 <__list_del_entry+0x84> <SNIP> ffffffff81265494: mov %rdi,%rcx Since we now have objdump_line allowing tools to print the offset independently from the rest of the line, allow toggling a view where just offsets from the start of the function are shown: 2f: jne ffffffff81265494 <__list_del_entry+0x84> <SNIP> 84: mov %rdi,%rcx The offset view will be the default as soon as operations that deal with offsets in a function are handled accodringly, i.e. in offset view the above will become: 2f: jne __list_del_entry+0x84 <SNIP> 84: mov %rdi,%rcx And then a follow up patch will allow navigating thru jumps, just like we handle callq instructions. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.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/n/tip-4zpgimmz8xv7b5c920el7s45@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
And by default use "magenta" for it. Both the --stdio and --tui routines follow the same semantics. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.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/n/tip-ede5zkaf7oorwvbqjezb4yg4@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
Tools that want to change parts of the line to a different color and then restore the previous one will use this, starting with the annotate browser that will change the color of addresses if not on the current entry, i.e. the selected one. 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-uiajpevhxo4mzrvna6remb4a@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- 05 Apr, 2012 5 commits
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Arnaldo Carvalho de Melo authored
This routine was checking only if the provided address was after sym->end, not if it was before sym->start. Fix that by checking for both and return in both cases -ERANGE, so that tools can communicate this to the user properly, or if they chose so, to abort. This problem was reported previously but the fixes involved either doing what was being done for the > end case, i.e. silently drop the sample, returning 0, or aborting at this function, which is in a lib (or better, is slated to be at some point) and shouldn't abort. The 'report' tool already checks this value and uses pr_debug to warn the user. This patch makes the 'top' tool check it too and warn once per map where such range problem takes place. Reported-by: David Miller <davem@davemloft.net> Reported-by: Sorin Dumitru <dumitru.sorin87@gmail.com> Reported-by: Stephane Eranian <eranian@google.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> Link: http://lkml.kernel.org/n/tip-lw8gs7p9i9nhldilo82tzpne@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Jiri Olsa authored
If there's an event with no samples in data file, the perf report command can segfault after entering the event details menu. Following steps reproduce the issue: # ./perf record -e syscalls:sys_enter_kexec_load,syscalls:sys_enter_mmap ls # ./perf report # enter '0 syscalls:sys_enter_kexec_load' menu # pres ENTER twice Above steps are valid assuming ls wont run kexec.. ;) The check for sellection to be NULL is missing. The fix makes sure it's being check. Above steps now endup with menu being displayed allowing 'Exit' as the only option. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1333570898-10505-2-git-send-email-jolsa@redhat.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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David Miller authored
When a process exec()'s, all the maps are retired, but we keep the hist entries around which hold references to those outdated maps. If the same library gets mapped in for which we have hist entries, a new map will be created. But when we take a perf entry hit within that map, we'll find the existing hist entry with the older map. This causes symbol translations to be done incorrectly. For example, the perf entry processing will lookup the correct uptodate map entry and use that to calculate the symbol and DSO relative address. But later when we update the histogram we'll translate the address using the outdated map file instead leading to conditions such as out-of-range offsets in symbol__inc_addr_samples(). Therefore, update the map of the hist_entry dynamically at lookup/ creation time. Signed-off-by: David S. Miller <davem@davemloft.net> Cc: stable@kernel.org Link: http://lkml.kernel.org/r/20120327.031418.1220315351537060808.davem@davemloft.netSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
We were only decaying the entries for the offsets that were associated with an objdump line. That way, when we accrued the whole instruction addr range, more than 100% was appearing in some cases in the live annotation TUI. Fix it by not traversing the source code line at all, just iterate thru the complete addr range decaying each one. Reported-by: Mike Galbraith <mgalbraith@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.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/n/tip-hcae5oxa22syjrnalsxz7s6n@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo authored
TODO: Accrue the cycles in the skip_list to an idle total, and show this on the 'top' UI, as suggested by Steven. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-9nfecmgghgl5747rjxqpc28f@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- 04 Apr, 2012 1 commit
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Markus Trippelsdorf authored
On a system running glibc trunk perf doesn't build: CC builtin-sched.o builtin-sched.c: In function ‘get_cpu_usage_nsec_parent’: builtin-sched.c:399:16: error: storage size of ‘ru’ isn’t known builtin-sched.c:403:2: error: implicit declaration of function ‘getrusage’ [-Werror=implicit-function-declaration] [...] Fix it by including sys/resource.h. Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20120404084527.GA294@x4Signed-off-by: Ingo Molnar <mingo@kernel.org>
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- 03 Apr, 2012 1 commit
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Peter Zijlstra authored
Steven reported his P4 not booting properly, the missing format attributes cause a NULL ptr deref. Cure this by adding the missing format specification. I took the format description out of the comment near p4_config_pack*() and hope that comment is still relatively accurate. Reported-by: Steven Rostedt <rostedt@goodmis.org> Reported-by: Bruno Prémont <bonbons@linux-vserver.org> Tested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1332859842.16159.227.camel@twinsSigned-off-by: Ingo Molnar <mingo@kernel.org>
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- 31 Mar, 2012 2 commits
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Oleg Nesterov authored
1. TRACE_EVENT(sched_process_exec) forgets to actually use the old pid argument, it sets ->old_pid = p->pid. 2. search_binary_handler() uses the wrong pid number. tracepoint needs the global pid_t from the root namespace, while old_pid is the virtual pid number as it seen by the tracer/parent. With this patch we have two pid_t's in search_binary_handler(), not really nice. Perhaps we should switch to "struct pid*", but in this case it would be better to cleanup the current code first and move the "depth == 0" code outside. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: David Smith <dsmith@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Denys Vlasenko <dvlasenk@redhat.com> Link: http://lkml.kernel.org/r/20120330162636.GA4857@redhat.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Ingo Molnar authored
Merge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
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- 30 Mar, 2012 1 commit
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Ingo Molnar authored
These should not be in the Git history - they are auto-generated. Extend the Makefile rules of the parser files to include the generation run. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20120327183335.GA27621@gmail.com [ committer note: Fixed up O= handling ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- 29 Mar, 2012 2 commits
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Arnaldo Carvalho de Melo authored
We were not noticing it because symbol__inc_addr_samples was erroneously dropping samples that hit the last byte in a function. Working on a fix for a problem reported by David Miller, Stephane Eranian and Sorin Dumitru, where addresses < sym->start were causing problems, I noticed this other problem. Cc: David Ahern <dsahern@gmail.com> Cc: David Miller <davem@davemloft.net> 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: Sorin Dumitru <dumitru.sorin87@gmail.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-pqjaq4cr1xs2xen73pjhbav4@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Namhyung Kim authored
The commit 89812fc8 ("perf tools: Add parser generator for events parsing") changed event parsing engine but missed the ref-cycles event. Add it. Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1333016517-10591-1-git-send-email-namhyung.kim@lge.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- 28 Mar, 2012 2 commits
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David Miller authored
Therefore, in symbol__get_source_line(), use map__rip_2objdump instead of calling map->unmap_ip() unconditionally. Link: http://lkml.kernel.org/r/20120325.162812.59519424882536855.davem@davemloft.netSigned-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Prashanth Nageshappa authored
If DIE entries corresponding to declarations appear before definition entry, probe finder returns error instead of continuing to look further for a definition entry. This patch ensures we reach to the DIE entry corresponding to the definition and get the function address. V2: A simpler solution based on Masami's suggestion. Signed-off-by: Prashanth Nageshappa <prashanth@linux.vnet.ibm.com> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/4F703FB9.9020407@linux.vnet.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- 27 Mar, 2012 3 commits
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Steven Rostedt authored
When reading the trace file, the records of each of the per_cpu buffers are examined to find the next event to print out. At the point of looking at the event, the size of the event is recorded. But if the first event is chosen, the other events in the other CPU buffers will reset the event size that is stored in the iterator descriptor, causing the event size passed to the output functions to be incorrect. In most cases this is not a problem, but for the case of stack traces, it is. With the change to the stack tracing to record a dynamic number of back traces, the output depends on the size of the entry instead of the fixed 8 back traces. When the entry size is not correct, the back traces would not be fully printed. Note, reading from the per-cpu trace files were not affected. Reported-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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David Miller authored
We should use "[unknown]" in this case, in concert with the code in _hist_entry__dso_snprintf(). Otherwise we'll crash when recomputing the histogram column lengths in hists__calc_col_len(). Signed-off-by: David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20120325.162822.2267799792062571623.davem@davemloft.netSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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David Miller authored
That causes us to end up using the XPG version of basename which can modify it's argument. Signed-off-by: David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20120327.000301.1122788061724345175.davem@davemloft.netSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- 26 Mar, 2012 4 commits
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Stephane Eranian authored
In perf_event__parse_sample(), the array variable was not incremented by the amount of data used by the raw_data. That was okay until we added PERF_SAMPLE_BRANCH_STACK which depends on the array variable pointing to the beginning of the branch stack data. But that was not the case if branch stack was combined with raw mode sampling. That led to bogus branch stack addresses and count. The bug would show up with: $ perf record -R -b foo This patch fixes the problem by correctly moving the array pointer forward for RAW samples. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120317222317.GA8803@quad [ committer note: Fix also later submitted by Jiri Olsa ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Frederic Weisbecker authored
The callchain stdio mode display was written using a sorted by symbol report. In this mode we have only one callchain root per hist so we forgot to handle cases where we have multiple callchain root, as in per dso sorting for example. Fix this by handling these roots like any other branch, with the hist as the parent. Before: 1.97% libpthread-2.12.1.so | --- __libc_write create_worker bench_sched_messaging cmd_bench run_builtin main __libc_start_main | --- __libc_read create_worker bench_sched_messaging cmd_bench run_builtin main __libc_start_main After: 1.97% libpthread-2.12.1.so | |--36.97%-- __libc_write | create_worker | bench_sched_messaging | cmd_bench | run_builtin | main | __libc_start_main | |--31.47%-- __libc_read | create_worker | bench_sched_messaging | cmd_bench | run_builtin | main | __libc_start_main ... Single roots keep their entry without percentage because they have the same overhead than the hist they refer to. ie: 100% in fractal mode and the percentage of the hist in graph mode: 0.00% [k] reschedule_interrupt | --- default_idle amd_e400_idle cpu_idle start_secondary Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1332526010-15400-1-git-send-email-fweisbec@gmail.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Jiri Olsa authored
When merged to Linus's latest tree the perf build is broken due to following change in lib/rbtree.c object: lib: reduce the use of module.h wherever possible commit 8bc3bcc9 Author: Paul Gortmaker <paul.gortmaker@windriver.com> Date: Wed Nov 16 21:29:17 2011 -0500 We need to move module.h header into export.h. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: acme@redhat.com Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: cjashfor@linux.vnet.ibm.com Cc: fweisbec@gmail.com Link: http://lkml.kernel.org/r/1332753425-3299-1-git-send-email-jolsa@redhat.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Ingo Molnar authored
Merge reason: we need to fix a non-trivial merge conflict. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 24 Mar, 2012 11 commits
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Linus Torvalds authored
Merge tag 'stable/for-linus-3.4-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull more xen updates from Konrad Rzeszutek Wilk: "One tiny feature that accidentally got lost in the initial git pull: * Add fast-EOI acking of interrupts (clear a bit instead of hypercall) And bug-fixes: * Fix CPU bring-up code missing a call to notify other subsystems. * Fix reading /sys/hypervisor even if PVonHVM drivers are not loaded. * In Xen ACPI processor driver: remove too verbose WARN messages, fix up the Kconfig dependency to be a module by default, and add dependency on CPU_FREQ. * Disable CPU frequency drivers from loading when booting under Xen (as we want the Xen ACPI processor to be used instead). * Cleanups in tmem code." * tag 'stable/for-linus-3.4-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/acpi: Fix Kconfig dependency on CPU_FREQ xen: initialize platform-pci even if xen_emul_unplug=never xen/smp: Fix bringup bug in AP code. xen/acpi: Remove the WARN's as they just create noise. xen/tmem: cleanup xen: support pirq_eoi_map xen/acpi-processor: Do not depend on CPU frequency scaling drivers. xen/cpufreq: Disable the cpu frequency scaling drivers from loading. provide disable_cpufreq() function to disable the API.
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Rik van Riel authored
We should only test compaction_suitable if the kernel is built with CONFIG_COMPACTION, otherwise the stub compaction_suitable function will always return COMPACT_SKIPPED and send kswapd into an infinite loop. Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linuxLinus Torvalds authored
Pull <linux/device.h> avoidance patches from Paul Gortmaker: "Nearly every subsystem has some kind of header with a proto like: void foo(struct device *dev); and yet there is no reason for most of these guys to care about the sub fields within the device struct. This allows us to significantly reduce the scope of headers including headers. For this instance, a reduction of about 40% is achieved by replacing the include with the simple fact that the device is some kind of a struct. Unlike the much larger module.h cleanup, this one is simply two commits. One to fix the implicit <linux/device.h> users, and then one to delete the device.h includes from the linux/include/ dir wherever possible." * tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: device.h: audit and cleanup users in main include dir device.h: cleanup users outside of linux/include (C files)
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git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linuxLinus Torvalds authored
Pull cleanup of fs/ and lib/ users of module.h from Paul Gortmaker: "Fix up files in fs/ and lib/ dirs to only use module.h if they really need it. These are trivial in scope vs the work done previously. We now have things where any few remaining cleanups can be farmed out to arch or subsystem maintainers, and I have done so when possible. What is remaining here represents the bits that don't clearly lie within a single arch/subsystem boundary, like the fs dir and the lib dir. Some duplicate includes arising from overlapping fixes from independent subsystem maintainer submissions are also quashed." Fix up trivial conflicts due to clashes with other include file cleanups (including some due to the previous bug.h cleanup pull). * tag 'module-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: lib: reduce the use of module.h wherever possible fs: reduce the use of module.h wherever possible includecheck: delete any duplicate instances of module.h
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git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linuxLinus Torvalds authored
Pull <linux/bug.h> cleanup from Paul Gortmaker: "The changes shown here are to unify linux's BUG support under the one <linux/bug.h> file. Due to historical reasons, we have some BUG code in bug.h and some in kernel.h -- i.e. the support for BUILD_BUG in linux/kernel.h predates the addition of linux/bug.h, but old code in kernel.h wasn't moved to bug.h at that time. As a band-aid, kernel.h was including <asm/bug.h> to pseudo link them. This has caused confusion[1] and general yuck/WTF[2] reactions. Here is an example that violates the principle of least surprise: CC lib/string.o lib/string.c: In function 'strlcat': lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON' make[2]: *** [lib/string.o] Error 1 $ $ grep linux/bug.h lib/string.c #include <linux/bug.h> $ We've included <linux/bug.h> for the BUG infrastructure and yet we still get a compile fail! [We've not kernel.h for BUILD_BUG_ON.] Ugh - very confusing for someone who is new to kernel development. With the above in mind, the goals of this changeset are: 1) find and fix any include/*.h files that were relying on the implicit presence of BUG code. 2) find and fix any C files that were consuming kernel.h and hence relying on implicitly getting some/all BUG code. 3) Move the BUG related code living in kernel.h to <linux/bug.h> 4) remove the asm/bug.h from kernel.h to finally break the chain. During development, the order was more like 3-4, build-test, 1-2. But to ensure that git history for bisect doesn't get needless build failures introduced, the commits have been reorderd to fix the problem areas in advance. [1] https://lkml.org/lkml/2012/1/3/90 [2] https://lkml.org/lkml/2012/1/17/414" Fix up conflicts (new radeon file, reiserfs header cleanups) as per Paul and linux-next. * tag 'bug-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: kernel.h: doesn't explicitly use bug.h, so don't include it. bug: consolidate BUILD_BUG_ON with other bug code BUG: headers with BUG/BUG_ON etc. need linux/bug.h bug.h: add include of it to various implicit C users lib: fix implicit users of kernel.h for TAINT_WARN spinlock: macroize assert_spin_locked to avoid bug.h dependency x86: relocate get/set debugreg fcns to include/asm/debugreg.
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Konrad Rzeszutek Wilk authored
The functions: "acpi_processor_*" sound like they depend on CONFIG_ACPI_PROCESSOR but in reality they are exposed when CONFIG_CPU_FREQ=[y|m]. As such update the Kconfig to have this dependency and fix compile issues: ERROR: "acpi_processor_unregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_notify_smm" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_register_performance" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_preregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined! Note: We still need the CONFIG_ACPI Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Jiri Olsa authored
Having the build time assertion in header is making the perf build fail on x86 with: ../../include/linux/perf_event.h:411:32: error: variably modified \ ‘__assert_mmap_data_head_offset’ at file scope [-Werror] I'm moving the build time validation out of the header, because I think it's better than to lessen the perf build warn/error check. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: acme@redhat.com Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: cjashfor@linux.vnet.ibm.com Cc: fweisbec@gmail.com Link: http://lkml.kernel.org/r/1332513680-7870-1-git-send-email-jolsa@redhat.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Ingo Molnar authored
Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctlLinus Torvalds authored
Pull sysctl updates from Eric Biederman: - Rewrite of sysctl for speed and clarity. Insert/remove/Lookup in sysctl are all now O(NlogN) operations, and are no longer bottlenecks in the process of adding and removing network devices. sysctl is now focused on being a filesystem instead of system call and the code can all be found in fs/proc/proc_sysctl.c. Hopefully this means the code is now approachable. Much thanks is owed to Lucian Grinjincu for keeping at this until something was found that was usable. - The recent proc_sys_poll oops found by the fuzzer during hibernation is fixed. * git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl: (36 commits) sysctl: protect poll() in entries that may go away sysctl: Don't call sysctl_follow_link unless we are a link. sysctl: Comments to make the code clearer. sysctl: Correct error return from get_subdir sysctl: An easier to read version of find_subdir sysctl: fix memset parameters in setup_sysctl_set() sysctl: remove an unused variable sysctl: Add register_sysctl for normal sysctl users sysctl: Index sysctl directories with rbtrees. sysctl: Make the header lists per directory. sysctl: Move sysctl_check_dups into insert_header sysctl: Modify __register_sysctl_paths to take a set instead of a root and an nsproxy sysctl: Replace root_list with links between sysctl_table_sets. sysctl: Add sysctl_print_dir and use it in get_subdir sysctl: Stop requiring explicit management of sysctl directories sysctl: Add a root pointer to ctl_table_set sysctl: Rewrite proc_sys_readdir in terms of first_entry and next_entry sysctl: Rewrite proc_sys_lookup introducing find_entry and lookup_entry. sysctl: Normalize the root_table data structure. sysctl: Factor out insert_header and erase_header ...
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git://git.kernel.org/pub/scm/linux/kernel/git/bp/bpLinus Torvalds authored
Pull AMD64 EDAC fixes from Borislav Petkov: "A bunch of fixes/updates for the AMD side of EDAC including * MCE decoding updates * tree-wide EDAC sweep making pci_device_ids __devinitconst * Scrub rate API correction * two amd64_edac corrections for K8 boxes and sysfs csrow nodes" * tag 'amd64-edac-updates-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: MCE, AMD: Constify error tables MCE, AMD: Correct bank 5 error signatures MCE, AMD: Rework NB MCE signatures MCE, AMD: Correct VB data error description MCE, AMD: Correct ucode patch buffer description MCE, AMD: Correct some MC0 error types EDAC: Make pci_device_id tables __devinitconst. EDAC: Correct scrub rate API amd64_edac: Fix K8 revD and later chip select sizes amd64_edac: Fix missing csrows sysfs nodes
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git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds authored
Pull cpufreq updates for 3.4 from Dave Jones: new drivers and some fixes. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: provide disable_cpufreq() function to disable the API. EXYNOS5250: Add support cpufreq for EXYNOS5250 EXYNOS4X12: Add support cpufreq for EXYNOS4X12 [CPUFREQ] CPUfreq ondemand: update sampling rate without waiting for next sampling [CPUFREQ] Add S3C2416/S3C2450 cpufreq driver [CPUFREQ] Fix exposure of ARM_EXYNOS4210_CPUFREQ [CPUFREQ] EXYNOS4210: update the name of EXYNOS clock register [CPUFREQ] EXYNOS: Initialize locking_frequency with initial frequency [CPUFREQ] s3c64xx: Fix mis-cherry pick of VDDINT Fix up trivial conflicts in Kconfig and Makefile due to just changes next to each other (OMAP2PLUS changes vs some new EXYNOS cpufreq drivers).
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