- 04 1月, 2011 8 次提交
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由 Arnaldo Carvalho de Melo 提交于
So that later, we can pass the thread_map instance instead of (thread_num, thread_map) for things like perf_evsel__open and friends, just like was done with cpu_map. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
So that later, we can pass the cpu_map instance instead of (nr_cpus, cpu_map) for things like perf_evsel__open and friends. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Abstracting away the loops needed to create the various event fd handlers. The users have to pass a confiruged perf->evsel.attr field, which is already usable after perf_evsel__new (constructor) time, using defaults. Comes out of the ad-hoc routines in builtin-stat, that now uses it. Fixed a small silly bug where we were die()ing before killing our children, dysfunctional family this one 8-) Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Making them hopefully generic enough to be used in 'perf test', well see. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Freeing all the possibly allocated resources, reducing complexity on each tool exit path. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Not really something to be exported from session.c. Rename it to 'readn' as others did in the past. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Out of ad-hoc code and global arrays with hard coded sizes. This is the first step on having a library that will be first used on regression tests in the 'perf test' tool. [acme@felicio linux]$ size /tmp/perf.before text data bss dec hex filename 1273776 97384 5104416 6475576 62cf38 /tmp/perf.before [acme@felicio linux]$ size /tmp/perf.new text data bss dec hex filename 1275422 97416 1392416 2765254 2a31c6 /tmp/perf.new Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 30 12月, 2010 1 次提交
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- 28 12月, 2010 1 次提交
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由 Franck Bui-Huu 提交于
After adding probes, perf-probe(1) reports the probes locations which include filenames for certain cases. But for short file names (whose length < 32), perf-probe didn't display the name correctly. It actually skipped the first character. Here's an example where 'icmp.c' was screwed: $ perf probe -n -a "icmp.c;sk=*" Add new events: probe:icmp_push_reply (on @cmp.c) probe:icmp_reply (on @cmp.c) probe:icmp_reply_1 (on @cmp.c) probe:icmp_send (on @cmp.c) probe:icmp_send_1 (on @cmp.c) probe:icmp_error (on @cmp.c) probe:icmp_error_1 (on @cmp.c) probe:icmp_error_2 (on @cmp.c) probe:icmp_error_3 (on @cmp.c) This patch fixes this bug in synthesize_perf_probe_point(). Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <m31v588r9k.fsf@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 26 12月, 2010 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
If we don't use .ordering_requires_timestamps we'll end up trying to order events with no timestamps when running on older kernels. Problem introduced in eac23d1c. After the last three fixes, perf scripting is back working, tested with new perf userspace on old and new (with sample_id_all) kernels. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ian Munsie <imunsie@au1.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Torok Edwin <edwintorok@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 25 12月, 2010 2 次提交
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由 Arnaldo Carvalho de Melo 提交于
Check if parse_single_tracepoint_event has already asked for PERF_SAMPLE_TIME. This is kludgy but short term fix for problems introduced by eac23d1c that broke 'perf script' by having different sample_types when using multiple tracepoint events when we use a perf binary that tries to use sample_id_all on an older kernel. We need to move counter creation to perf_session, support different sample_types, etc. Ongoing work on the perf test infrastructure needs this so that we can create counters to monitor threads generating specific events, etc. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Torok Edwin <edwintorok@gmail.com> Cc: Ian Munsie <imunsie@au1.ibm.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
The scripts have calls to 'perf trace' that need to be converted to 'perf script', do it. This problem was introduced in 133dc4c3. Reported-by: NTorok Edwin <edwintorok@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Torok Edwin <edwintorok@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 23 12月, 2010 6 次提交
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由 Ingo Molnar 提交于
Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/core
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由 Franck Bui-Huu 提交于
This was introduced by commit fde52dbd. Cc: H. Peter Anvin <hpa@zytor.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <m3y67hsr0m.fsf@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
Not just before, fixing these false positives: [acme@mica linux]$ perf test -v 1 1: vmlinux symtab matches kallsyms: --- start --- Looking at the vmlinux_path (6 entries long) Using //lib/modules/2.6.37-rc5-00180-ge06b6bf/build/vmlinux for symbols 0xffffffff81058dc0: diff name v: sys_vm86old k: sys_ni_syscall 0xffffffff81058dc0: diff name v: sys_vm86 k: sys_ni_syscall 0xffffffff81058dc0: diff name v: sys_subpage_prot k: sys_ni_syscall 0xffffffff810b5f7c: diff name v: probe_kernel_write k: __probe_kernel_write 0xffffffff810b5fe5: diff name v: probe_kernel_read k: __probe_kernel_read 0xffffffff811bc380: diff name v: __memset k: memset 0xffffffff81384a98: diff name v: __sched_text_start k: sleep_on_common 0xffffffff81386750: diff name v: __sched_text_end k: _raw_spin_trylock 0xffffffff8138cee8: diff name v: __irqentry_text_start k: do_IRQ 0xffffffff8138f079: diff name v: __start_notes k: _etext 0xffffffff8138f079: diff name v: __stop_notes k: _etext ---- end ---- vmlinux symtab matches kallsyms: FAILED! [acme@mica linux]$ Some are weak functions, others are just markers, etc. They get in the rb tree with the same addr, so we need to look around to find the symbol with the same name. We were looking just at the previous entries with the same addr, look forward too. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Han Pingtian <phan@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
For kallsyms we don't have the symbol address end, so we do an extra pass and set the symbol end addr as being the start of the next minus one. But this was being done just after we filtered the symbols of a particular type (functions, variables), so the symbol end was sometimes after what it really is. Fixing up symbol end also was falling apart when we have symbol aliases, then the end address of all but the last alias was being set to be before its start. Fix it up by checking for symbol aliases and making the kallsyms__parse routine use the next symbol, whatever its type, as the limit for the previous symbol, passing that end address to the callback. This was detected by the 'perf test' synthetic paranoid regression tests, fix it up so that even that case doesn't mislead us. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Don Zickus 提交于
The x86 arch has shifted its use of the nmi_watchdog from a local implementation to the global one provide by kernel/watchdog.c. This shift has caused a whole bunch of compile problems under different config options. I attempt to simplify things with the patch below. In order to simplify things, I had to come to terms with the meaning of two terms ARCH_HAS_NMI_WATCHDOG and CONFIG_HARDLOCKUP_DETECTOR. Basically they mean the same thing, the former on a local level and the latter on a global level. With the old x86 nmi watchdog gone, there is no need to rely on defining the ARCH_HAS_NMI_WATCHDOG variable because it doesn't make sense any more. x86 will now use the global implementation. The changes below do a few things. First it changes the few places that relied on ARCH_HAS_NMI_WATCHDOG to use CONFIG_X86_LOCAL_APIC (the former was an alias for the latter anyway, so nothing unusual here). Those pieces of code were relying more on local apic functionality the nmi watchdog functionality, so the change should make sense. Second, I removed the x86 implementation of touch_nmi_watchdog(). It isn't need now, instead x86 will rely on kernel/watchdog.c's implementation. Third, I removed the #define ARCH_HAS_NMI_WATCHDOG itself from x86. And tweaked the include/linux/nmi.h file to tell users to look for an externally defined touch_nmi_watchdog in the case of ARCH_HAS_NMI_WATCHDOG _or_ CONFIG_HARDLOCKUP_DETECTOR. This changes removes some of the ugliness in that file. Finally, I added a Kconfig dependency for CONFIG_HARDLOCKUP_DETECTOR that said you can't have ARCH_HAS_NMI_WATCHDOG _and_ CONFIG_HARDLOCKUP_DETECTOR. You can only have one nmi_watchdog. Tested with ARCH=i386: allnoconfig, defconfig, allyesconfig, (various broken configs) ARCH=x86_64: allnoconfig, defconfig, allyesconfig, (various broken configs) Hopefully, after this patch I won't get any more compile broken emails. :-) v3: changed a couple of 'linux/nmi.h' -> 'asm/nmi.h' to pick-up correct function prototypes when CONFIG_HARDLOCKUP_DETECTOR is not set. Signed-off-by: NDon Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: fweisbec@gmail.com LKML-Reference: <1293044403-14117-1-git-send-email-dzickus@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core
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- 22 12月, 2010 13 次提交
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由 Ingo Molnar 提交于
Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/core
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由 Ingo Molnar 提交于
Merge reason: Pick up the latest -rc. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Linus Torvalds 提交于
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由 Franck Bui-Huu 提交于
Currently perf probe doesn't handle those incorrect syntaxes: $ perf probe -L sched.c:++13 $ perf probe -L sched.c:-+13 $ perf probe -L sched.c:10000000000000000000000000000+13 This patches rewrites parse_line_range_desc() to handle them. As a bonus, it reports more useful error messages instead of: "Tailing with invalid character...". Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1292854685-8230-7-git-send-email-fbuihuu@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Franck Bui-Huu 提交于
When listing a whole file or a function which is located at the end, perf-probe -L output wrongly: "Source file is shorter than expected.". This is because show_one_line() always consider EOF as an error. This patch fixes this by not considering EOF as an error when dumping the trailing lines. Otherwise it's still an error and perf-probe still outputs its warning. Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1292854685-8230-6-git-send-email-fbuihuu@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Franck Bui-Huu 提交于
$ perf-probe -L sched.c is currently allowed but not documented. Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1292854685-8230-5-git-send-email-fbuihuu@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Franck Bui-Huu 提交于
It also removes some superflous parentheses. Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1292854685-8230-4-git-send-email-fbuihuu@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Franck Bui-Huu 提交于
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1292854685-8230-3-git-send-email-fbuihuu@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Franck Bui-Huu 提交于
The actual file used by 'perf probe -L sched.c' is reported in the ouput of the command. But it's simply displayed as it has been given to the command (simply sched.c) which is too ambiguous to be really usefull since several sched.c files can be found into the same project and we also don't know which search path has been used. Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1292854685-8230-2-git-send-email-fbuihuu@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Add new lines for error or debug messages, change dwarf related words to more generic words (or just removed). Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20101217131211.24123.40437.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 David Ahern 提交于
The symfs argument allows analysis of perf.data file using a locally accessible filesystem tree with debug symbols - e.g., tree created during image builds, sshfs mount, loop mounted KVM disk images, USB keys, initrds, etc. Anything with an OS tree can be analyzed from anywhere without the need to populate a local data store with build-ids. Commiter notes: o Fixed up symfs="/" variants handling. o prefixed DSO__ORIG_GUEST_KMODULE case with symfs too, avoiding use of files outside the symfs directory. LKML-Reference: <1291926427-28846-1-git-send-email-daahern@cisco.com> Signed-off-by: NDavid Ahern <daahern@cisco.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Ian Munsie 提交于
This patch changes perf report to ask for the ID info on all events be default if recording from multiple CPUs. Perf report, annotate and diff will now process the events in order if the kernel is able to provide timestamps on all events. This ensures that events such as COMM and MMAP which are necessary to correctly interpret samples are processed prior to those samples so that they are attributed correctly. Before: # perf record ./cachetest # perf report # Events: 6K cycles # # Overhead Command Shared Object Symbol # ........ ....... ................. ............................... # 74.11% :3259 [unknown] [k] 0x4a6c 1.50% cachetest ld-2.11.2.so [.] 0x1777c 1.46% :3259 [kernel.kallsyms] [k] .perf_event_mmap_ctx 1.25% :3259 [kernel.kallsyms] [k] restore 0.74% :3259 [kernel.kallsyms] [k] ._raw_spin_lock 0.71% :3259 [kernel.kallsyms] [k] .filemap_fault 0.66% :3259 [kernel.kallsyms] [k] .memset 0.54% cachetest [kernel.kallsyms] [k] .sha_transform 0.54% :3259 [kernel.kallsyms] [k] .copy_4K_page 0.54% :3259 [kernel.kallsyms] [k] .find_get_page 0.52% :3259 [kernel.kallsyms] [k] .trace_hardirqs_off 0.50% :3259 [kernel.kallsyms] [k] .__do_fault <SNIP> After: # perf report # Events: 6K cycles # # Overhead Command Shared Object Symbol # ........ ....... ................. ............................... # 44.28% cachetest cachetest [.] sumArrayNaive 22.53% cachetest cachetest [.] sumArrayOptimal 6.59% cachetest ld-2.11.2.so [.] 0x1777c 2.13% cachetest [unknown] [k] 0x340 1.46% cachetest [kernel.kallsyms] [k] .perf_event_mmap_ctx 1.25% cachetest [kernel.kallsyms] [k] restore 0.74% cachetest [kernel.kallsyms] [k] ._raw_spin_lock 0.71% cachetest [kernel.kallsyms] [k] .filemap_fault 0.66% cachetest [kernel.kallsyms] [k] .memset 0.54% cachetest [kernel.kallsyms] [k] .copy_4K_page 0.54% cachetest [kernel.kallsyms] [k] .find_get_page 0.54% cachetest [kernel.kallsyms] [k] .sha_transform 0.52% cachetest [kernel.kallsyms] [k] .trace_hardirqs_off 0.50% cachetest [kernel.kallsyms] [k] .__do_fault <SNIP> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <1291872833-839-1-git-send-email-imunsie@au1.ibm.com> Signed-off-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Ian Munsie 提交于
If we are running the new perf on an old kernel without support for sample_id_all, we should fall back to the old unordered processing of events. If we didn't than we would *always* process events without timestamps out of order, whether or not we hit a reordering race. In other words, instead of there being a chance of not attributing samples correctly, we would guarantee that samples would not be attributed. While processing all events without timestamps before events with timestamps may seem like an intuitive solution, it falls down as PERF_RECORD_EXIT events would also be processed before any samples. Even with a workaround for that case, samples before/after an exec would not be attributed correctly. This patch allows commands to indicate whether they need to fall back to unordered processing, so that commands that do not care about timestamps on every event will not be affected. If we do fallback, this will print out a warning if report -D was invoked. This patch adds the test in perf_session__new so that we only need to test once per session. Commands that do not use an event_ops (such as record and top) can simply pass NULL in it's place. Acked-by: NThomas Gleixner <tglx@linutronix.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <1291951882-sup-6069@au1.ibm.com> Signed-off-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 21 12月, 2010 8 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6由 Linus Torvalds 提交于
* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: n_gsm: gsm_data_alloc buffer allocation could fail and it is not being checked n_gsm: Fix message length handling when building header
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6由 Linus Torvalds 提交于
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: Revert "USB: gadget: Allow function access to device ID data during bind()" USB: misc: uss720.c: add another vendor/product ID USB: usb-storage: unusual_devs entry for the Samsung YP-CP3 USB: gadget: Remove suspended sysfs file before freeing cdev USB: core: Add input prompt and help text for USB_OTG config USB: ftdi_sio: Add D.O.Tec PID xhci: Fix issue with port array setup and buggy hosts.
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: handle partial result from get_user_pages ceph: mark user pages dirty on direct-io reads ceph: fix null pointer dereference in ceph_init_dentry for nfs reexport ceph: fix direct-io on non-page-aligned buffers ceph: fix msgr_init error path
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由 Linus Torvalds 提交于
.. caused by a missing semi-colon, introduced in commit 0fc13c89 ("cciss: fix cciss_revalidate panic"). Reported-by: NStephen Rothwell <sfr@canb.auug.org.au> Reported-by: NThiago Farina <tfransosi@gmail.com> Cc: Jens Axboe <jaxboe@fusionio.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6由 Linus Torvalds 提交于
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: [media] gspca - sonixj: Better handling of the bridge registers 0x01 and 0x17 [media] gspca - sonixj: Add the bit definitions of the bridge reg 0x01 and 0x17 [media] gspca - sonixj: Set the flag for some devices [media] gspca - sonixj: Add a flag in the driver_info table [media] gspca - sonixj: Fix a bad probe exchange [media] gspca - sonixj: Move bridge init to sd start [media] bttv: remove unneeded locking comments [media] bttv: fix mutex use before init (BZ#24602) [media] Don't export format_by_forcc on two different drivers
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由 Linus Torvalds 提交于
Merge branch 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: ARM: mach-shmobile: INTC interrupt priority level demux fix ARM: mach-shmobile: fix compile warning in mm/init.c
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git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6由 Linus Torvalds 提交于
* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: clocksource: sh_cmt: Remove nested spinlock fix
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由 Linus Torvalds 提交于
Merge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6 * 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6: OMAP: OMAPFB: disable old omapfb for OMAP4 builds OMAP: DSS: VRAM: Align start & size of vram to 2M
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