* [2.6.39-rc2] perf top fails to mmap @ 2011-04-06 10:51 Tim Blechmann 2011-04-06 15:20 ` David Ahern 0 siblings, 1 reply; 13+ messages in thread From: Tim Blechmann @ 2011-04-06 10:51 UTC (permalink / raw) To: linux-kernel hi all, when trying to profile a process with `perf top -p $PID', perf exits with: Failed to mmap with 22 (Invalid argument) this happens when running perf as the same process as the process and when running perf as root. tim ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap 2011-04-06 10:51 [2.6.39-rc2] perf top fails to mmap Tim Blechmann @ 2011-04-06 15:20 ` David Ahern 2011-04-06 17:52 ` Arnaldo Carvalho de Melo 0 siblings, 1 reply; 13+ messages in thread From: David Ahern @ 2011-04-06 15:20 UTC (permalink / raw) To: Tim Blechmann; +Cc: linux-kernel On 04/06/11 04:51, Tim Blechmann wrote: > hi all, > > when trying to profile a process with `perf top -p $PID', perf exits with: > Failed to mmap with 22 (Invalid argument) Works fine for me with latest kernel tree (this morning). Short lived process? David > > this happens when running perf as the same process as the process and when > running perf as root. > > tim > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap 2011-04-06 15:20 ` David Ahern @ 2011-04-06 17:52 ` Arnaldo Carvalho de Melo 2011-04-06 20:48 ` Tim Blechmann 0 siblings, 1 reply; 13+ messages in thread From: Arnaldo Carvalho de Melo @ 2011-04-06 17:52 UTC (permalink / raw) To: Tim Blechmann; +Cc: David Ahern, linux-kernel Em Wed, Apr 06, 2011 at 09:20:53AM -0600, David Ahern escreveu: > > > On 04/06/11 04:51, Tim Blechmann wrote: > > hi all, > > > > when trying to profile a process with `perf top -p $PID', perf exits with: > > Failed to mmap with 22 (Invalid argument) > > Works fine for me with latest kernel tree (this morning). Short lived > process? > > David > > > > > this happens when running perf as the same process as the process and when > > running perf as root. yep, works for me as well: [acme@emilia ~]$ cat vsyscall.c #include <time.h> int main(void) { struct timespec t; //int i; //for(i = 0; i < 10000000; i++) while (1) { clock_gettime(CLOCK_MONOTONIC, &t); usleep(10); } return 0; } [acme@emilia ~]$ cc -lrt vsyscall.c -o vsyscall [acme@emilia ~]$ ./vsyscall & [acme@emilia linux]$ perf top -p `pidof vsyscall` -F 10000 PerfTop: 230 irqs/sec kernel:88.3% exact: 0.0% [10000Hz cycles], (target_pid: 2728) ---------------------------------------------------------------------------------------- samples pcnt function DSO _______ _____ ____________________ ____________________ 21.00 44.7% __nanosleep_nocancel /lib64/libc-2.12.so 13.00 27.7% usleep /lib64/libc-2.12.so 6.00 12.8% __GI_clock_gettime /lib64/librt-2.12.so 6.00 12.8% main /home/acme/vsyscall ^C [acme@emilia linux]$ su - Password: [root@emilia ~]# perf top -p `pidof vsyscall` -F 10000 --hide_kernel_symbols PerfTop: 428 irqs/sec kernel:90.2% exact: 0.0% [10000Hz cycles], (target_pid: 2728) ------------------------------------------------------------------------------------------- samples pcnt function DSO _______ _____ ____________________ ____________________ 15.00 29.4% __nanosleep_nocancel /lib64/libc-2.12.so 14.00 27.5% usleep /lib64/libc-2.12.so 9.00 17.6% __GI_clock_gettime /lib64/librt-2.12.so 8.00 15.7% main /home/acme/vsyscall ^C [root@emilia ~]# - Arnaldo ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap 2011-04-06 17:52 ` Arnaldo Carvalho de Melo @ 2011-04-06 20:48 ` Tim Blechmann 2011-04-06 22:15 ` David Ahern 0 siblings, 1 reply; 13+ messages in thread From: Tim Blechmann @ 2011-04-06 20:48 UTC (permalink / raw) To: Arnaldo Carvalho de Melo; +Cc: David Ahern, linux-kernel [-- Attachment #1: Type: Text/Plain, Size: 475 bytes --] > > David > > > > > this happens when running perf as the same process as the process and > > > when running perf as root. > > yep, works for me as well: > > [acme@emilia ~]$ cat vsyscall.c after including unistd.h, this compiles and works fine. however i cannot profile any multithreaded program. does this work for you? tim -- tim@klingt.org http://tim.klingt.org The most wonderful opportunity which life offers is to be human. Henry Miller [-- Attachment #2: This is a digitally signed message part. --] [-- Type: application/pgp-signature, Size: 230 bytes --] ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap 2011-04-06 20:48 ` Tim Blechmann @ 2011-04-06 22:15 ` David Ahern 2011-04-06 22:45 ` [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 David Ahern 0 siblings, 1 reply; 13+ messages in thread From: David Ahern @ 2011-04-06 22:15 UTC (permalink / raw) To: Tim Blechmann; +Cc: Arnaldo Carvalho de Melo, linux-kernel On 04/06/11 14:48, Tim Blechmann wrote: >>> David >>> >>>> this happens when running perf as the same process as the process and >>>> when running perf as root. >> >> yep, works for me as well: >> >> [acme@emilia ~]$ cat vsyscall.c > > after including unistd.h, this compiles and works fine. however i cannot profile > any multithreaded program. does this work for you? > > tim > That does fail: # ps -C rsyslogd -L PID LWP TTY TIME CMD 795 795 ? 00:00:00 rsyslogd 795 797 ? 00:00:00 rsyslogd 795 798 ? 00:00:00 rsyslogd # /tmp/build-perf/perf top -p 795 Failed to mmap with 22 (Invalid argument) strace shows it failing at: ioctl(4, PERF_EVENT_IOC_SET_OUTPUT, 0x3) = -1 EINVAL (Invalid argument) Changing to use thread only works: # /tmp/build-perf/perf top -t 795 ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 2011-04-06 22:15 ` David Ahern @ 2011-04-06 22:45 ` David Ahern 2011-04-07 0:13 ` Arnaldo Carvalho de Melo 2011-04-22 16:37 ` David Ahern 0 siblings, 2 replies; 13+ messages in thread From: David Ahern @ 2011-04-06 22:45 UTC (permalink / raw) To: Tim Blechmann, Arnaldo Carvalho de Melo; +Cc: linux-kernel On 04/06/11 16:15, David Ahern wrote: > > > On 04/06/11 14:48, Tim Blechmann wrote: >>>> David >>>> >>>>> this happens when running perf as the same process as the process and >>>>> when running perf as root. >>> >>> yep, works for me as well: >>> >>> [acme@emilia ~]$ cat vsyscall.c >> >> after including unistd.h, this compiles and works fine. however i cannot profile >> any multithreaded program. does this work for you? >> >> tim >> > > That does fail: > # ps -C rsyslogd -L > PID LWP TTY TIME CMD > 795 795 ? 00:00:00 rsyslogd > 795 797 ? 00:00:00 rsyslogd > 795 798 ? 00:00:00 rsyslogd > > # /tmp/build-perf/perf top -p 795 > Failed to mmap with 22 (Invalid argument) > > strace shows it failing at: > ioctl(4, PERF_EVENT_IOC_SET_OUTPUT, 0x3) = -1 EINVAL (Invalid argument) > > Changing to use thread only works: > # /tmp/build-perf/perf top -t 795 git bisect points to: 70db7533caef02350ec8d6852e589491bca3a951 is the first bad commit commit 70db7533caef02350ec8d6852e589491bca3a951 Author: Arnaldo Carvalho de Melo <acme@redhat.com> Date: Wed Jan 12 22:39:13 2011 -0200 perf evlist: Move the mmap array from perf_evsel Adopting the new model used in 'perf record', where we don't have a map per thread per cpu, instead we have an mmap per cpu, established on the first fd for that cpu and ask the kernel using the PERF_EVENT_IOC_SET_OUTPUT ioctl to send events for the other fds on that cpu for the one with the mmap. The methods moved from perf_evsel to perf_evlist, but for easing review they were modified in place, in evsel.c, the next patch will move the migrated methods to evlist.c. With this 'perf top' now uses the same mmap model used by 'perf record' and the next patches will make 'perf record' use these new routines, establishing a common codebase for both tools. ---------- Coincidentally, perf-record is also broken. git bisect points to: dd7927f4f8ee75b032ff15aeef4bda49719a443a is the first bad commit commit dd7927f4f8ee75b032ff15aeef4bda49719a443a Author: Arnaldo Carvalho de Melo <acme@redhat.com> Date: Wed Jan 12 14:28:51 2011 -0200 perf record: Use perf_evsel__open Now its time to factor out the mmap handling bits into the perf_evsel class. ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 2011-04-06 22:45 ` [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 David Ahern @ 2011-04-07 0:13 ` Arnaldo Carvalho de Melo 2011-04-22 16:37 ` David Ahern 1 sibling, 0 replies; 13+ messages in thread From: Arnaldo Carvalho de Melo @ 2011-04-07 0:13 UTC (permalink / raw) To: David Ahern; +Cc: Tim Blechmann, linux-kernel Em Wed, Apr 06, 2011 at 04:45:09PM -0600, David Ahern escreveu: > On 04/06/11 16:15, David Ahern wrote: > > On 04/06/11 14:48, Tim Blechmann wrote: > >>>>> this happens when running perf as the same process as the process and > >>>>> when running perf as root. > >>> > >>> yep, works for me as well: > >>> > >>> [acme@emilia ~]$ cat vsyscall.c > >> > >> after including unistd.h, this compiles and works fine. however i cannot profile > >> any multithreaded program. does this work for you? > > That does fail: > > # ps -C rsyslogd -L > > PID LWP TTY TIME CMD > > 795 795 ? 00:00:00 rsyslogd > > 795 797 ? 00:00:00 rsyslogd > > 795 798 ? 00:00:00 rsyslogd > > # /tmp/build-perf/perf top -p 795 > > Failed to mmap with 22 (Invalid argument) > > strace shows it failing at: > > ioctl(4, PERF_EVENT_IOC_SET_OUTPUT, 0x3) = -1 EINVAL (Invalid argument) > > Changing to use thread only works: > > # /tmp/build-perf/perf top -t 795 > > git bisect points to: > > 70db7533caef02350ec8d6852e589491bca3a951 is the first bad commit > commit 70db7533caef02350ec8d6852e589491bca3a951 > Author: Arnaldo Carvalho de Melo <acme@redhat.com> > Date: Wed Jan 12 22:39:13 2011 -0200 > > perf evlist: Move the mmap array from perf_evsel > > Adopting the new model used in 'perf record', where we don't have a map > per thread per cpu, instead we have an mmap per cpu, established on the > first fd for that cpu and ask the kernel using the > PERF_EVENT_IOC_SET_OUTPUT ioctl to send events for the other fds on that > cpu for the one with the mmap. > > The methods moved from perf_evsel to perf_evlist, but for easing review > they were modified in place, in evsel.c, the next patch will move the > migrated methods to evlist.c. > > With this 'perf top' now uses the same mmap model used by 'perf record' > and the next patches will make 'perf record' use these new routines, > establishing a common codebase for both tools. > > ---------- > > Coincidentally, perf-record is also broken. git bisect points to: > > dd7927f4f8ee75b032ff15aeef4bda49719a443a is the first bad commit > commit dd7927f4f8ee75b032ff15aeef4bda49719a443a > Author: Arnaldo Carvalho de Melo <acme@redhat.com> > Date: Wed Jan 12 14:28:51 2011 -0200 > > perf record: Use perf_evsel__open > > Now its time to factor out the mmap handling bits into the perf_evsel > class. I'll work on that tomorrow, if nobody fixes this till then :-) - Arnaldo ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 2011-04-06 22:45 ` [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 David Ahern 2011-04-07 0:13 ` Arnaldo Carvalho de Melo @ 2011-04-22 16:37 ` David Ahern 2011-04-23 13:45 ` Lin Ming 1 sibling, 1 reply; 13+ messages in thread From: David Ahern @ 2011-04-22 16:37 UTC (permalink / raw) To: Arnaldo Carvalho de Melo; +Cc: Tim Blechmann, linux-kernel I know you've been busy with other stuff the past few weeks, but have you had a chance to look into this? Basically, perf in 2.6.39 is broken when trying to profile a process (-p argument to record or top). David > On 04/06/11 16:15, David Ahern wrote: >> >> >> On 04/06/11 14:48, Tim Blechmann wrote: >>>>> David >>>>> >>>>>> this happens when running perf as the same process as the process and >>>>>> when running perf as root. >>>> >>>> yep, works for me as well: >>>> >>>> [acme@emilia ~]$ cat vsyscall.c >>> >>> after including unistd.h, this compiles and works fine. however i cannot profile >>> any multithreaded program. does this work for you? >>> >>> tim >>> >> >> That does fail: >> # ps -C rsyslogd -L >> PID LWP TTY TIME CMD >> 795 795 ? 00:00:00 rsyslogd >> 795 797 ? 00:00:00 rsyslogd >> 795 798 ? 00:00:00 rsyslogd >> >> # /tmp/build-perf/perf top -p 795 >> Failed to mmap with 22 (Invalid argument) >> >> strace shows it failing at: >> ioctl(4, PERF_EVENT_IOC_SET_OUTPUT, 0x3) = -1 EINVAL (Invalid argument) >> >> Changing to use thread only works: >> # /tmp/build-perf/perf top -t 795 > > git bisect points to: > > 70db7533caef02350ec8d6852e589491bca3a951 is the first bad commit > commit 70db7533caef02350ec8d6852e589491bca3a951 > Author: Arnaldo Carvalho de Melo <acme@redhat.com> > Date: Wed Jan 12 22:39:13 2011 -0200 > > perf evlist: Move the mmap array from perf_evsel > > Adopting the new model used in 'perf record', where we don't have a map > per thread per cpu, instead we have an mmap per cpu, established on the > first fd for that cpu and ask the kernel using the > PERF_EVENT_IOC_SET_OUTPUT ioctl to send events for the other fds on that > cpu for the one with the mmap. > > The methods moved from perf_evsel to perf_evlist, but for easing review > they were modified in place, in evsel.c, the next patch will move the > migrated methods to evlist.c. > > With this 'perf top' now uses the same mmap model used by 'perf record' > and the next patches will make 'perf record' use these new routines, > establishing a common codebase for both tools. > > ---------- > > Coincidentally, perf-record is also broken. git bisect points to: > > dd7927f4f8ee75b032ff15aeef4bda49719a443a is the first bad commit > commit dd7927f4f8ee75b032ff15aeef4bda49719a443a > Author: Arnaldo Carvalho de Melo <acme@redhat.com> > Date: Wed Jan 12 14:28:51 2011 -0200 > > perf record: Use perf_evsel__open > > Now its time to factor out the mmap handling bits into the perf_evsel > class. ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 2011-04-22 16:37 ` David Ahern @ 2011-04-23 13:45 ` Lin Ming [not found] ` <BANLkTikWpnnHAfO2n2rN6ExtQyrsVaiqEQ@mail.gmail.com> 0 siblings, 1 reply; 13+ messages in thread From: Lin Ming @ 2011-04-23 13:45 UTC (permalink / raw) To: David Ahern; +Cc: Arnaldo Carvalho de Melo, Tim Blechmann, linux-kernel On Sat, Apr 23, 2011 at 12:37 AM, David Ahern <dsahern@gmail.com> wrote: > I know you've been busy with other stuff the past few weeks, but have > you had a chance to look into this? Basically, perf in 2.6.39 is broken > when trying to profile a process (-p argument to record or top). Let me take a look at this. Lin Ming > > David ^ permalink raw reply [flat|nested] 13+ messages in thread
[parent not found: <BANLkTikWpnnHAfO2n2rN6ExtQyrsVaiqEQ@mail.gmail.com>]
* Re: [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 [not found] ` <BANLkTikWpnnHAfO2n2rN6ExtQyrsVaiqEQ@mail.gmail.com> @ 2011-04-23 14:51 ` Lin Ming 2011-04-24 11:47 ` Tim Blechmann 0 siblings, 1 reply; 13+ messages in thread From: Lin Ming @ 2011-04-23 14:51 UTC (permalink / raw) To: David Ahern Cc: Peter Zijlstra, Arnaldo Carvalho de Melo, Tim Blechmann, linux-kernel On Sat, 2011-04-23 at 22:36 +0800, Lin Ming wrote: > On Sat, Apr 23, 2011 at 12:37 AM, David Ahern <dsahern@gmail.com> wrote: > > I know you've been busy with other stuff the past few weeks, but have > > you had a chance to look into this? Basically, perf in 2.6.39 is broken > > when trying to profile a process (-p argument to record or top). > > Let me take a look at this. Below patch fixes the same problem on my box. Could you have a try it? >From 89f1ab02cd8da55f8829b2f2d7e700fdae77b3af Mon Sep 17 00:00:00 2001 From: Lin Ming <ming.m.lin@intel.com> Date: Sat, 23 Apr 2011 14:54:33 +0000 Subject: [PATCH] perf: Allow set output event for task in the same thread group Signed-off-by: Lin Ming <ming.m.lin@intel.com> --- kernel/perf_event.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 8e81a98..17dbc49 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -6379,9 +6379,10 @@ perf_event_set_output(struct perf_event *event, struct perf_event *output_event) goto out; /* - * If its not a per-cpu buffer, it must be the same task. + * If its not a per-cpu buffer, it must be the same task or in the same thread group. */ - if (output_event->cpu == -1 && output_event->ctx != event->ctx) + if (output_event->cpu == -1 && + !same_thread_group(output_event->ctx->task, event->ctx->task)) goto out; set: > > Lin Ming > > > > > David ^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 2011-04-23 14:51 ` Lin Ming @ 2011-04-24 11:47 ` Tim Blechmann 2011-04-24 13:45 ` David Ahern 0 siblings, 1 reply; 13+ messages in thread From: Tim Blechmann @ 2011-04-24 11:47 UTC (permalink / raw) To: Lin Ming Cc: David Ahern, Peter Zijlstra, Arnaldo Carvalho de Melo, linux-kernel [-- Attachment #1: Type: Text/Plain, Size: 907 bytes --] > > > I know you've been busy with other stuff the past few weeks, but have > > > you had a chance to look into this? Basically, perf in 2.6.39 is broken > > > when trying to profile a process (-p argument to record or top). > > > > Let me take a look at this. > > Below patch fixes the same problem on my box. > Could you have a try it? i have done some quick tests with this patch applied on linus/master ... works fine for me, thanks a lot! > >From 89f1ab02cd8da55f8829b2f2d7e700fdae77b3af Mon Sep 17 00:00:00 2001 > > From: Lin Ming <ming.m.lin@intel.com> > Date: Sat, 23 Apr 2011 14:54:33 +0000 > Subject: [PATCH] perf: Allow set output event for task in the same thread > group > > Signed-off-by: Lin Ming <ming.m.lin@intel.com> Tested-by: Tim Blechmann <tim@klingt.org> cheers, tim -- tim@klingt.org http://tim.klingt.org When you open windows, bugs get in. [-- Attachment #2: This is a digitally signed message part. --] [-- Type: application/pgp-signature, Size: 230 bytes --] ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 2011-04-24 11:47 ` Tim Blechmann @ 2011-04-24 13:45 ` David Ahern 2011-04-24 15:02 ` Lin Ming 0 siblings, 1 reply; 13+ messages in thread From: David Ahern @ 2011-04-24 13:45 UTC (permalink / raw) To: Tim Blechmann, Lin Ming Cc: Peter Zijlstra, Arnaldo Carvalho de Melo, linux-kernel On 04/24/11 05:47, Tim Blechmann wrote: >>>> I know you've been busy with other stuff the past few weeks, but have >>>> you had a chance to look into this? Basically, perf in 2.6.39 is broken >>>> when trying to profile a process (-p argument to record or top). >>> >>> Let me take a look at this. >> >> Below patch fixes the same problem on my box. >> Could you have a try it? > > i have done some quick tests with this patch applied on linus/master ... works > fine for me, thanks a lot! Works for me as well. > >> >From 89f1ab02cd8da55f8829b2f2d7e700fdae77b3af Mon Sep 17 00:00:00 2001 >> >> From: Lin Ming <ming.m.lin@intel.com> >> Date: Sat, 23 Apr 2011 14:54:33 +0000 >> Subject: [PATCH] perf: Allow set output event for task in the same thread >> group >> >> Signed-off-by: Lin Ming <ming.m.lin@intel.com> > > Tested-by: Tim Blechmann <tim@klingt.org> > > cheers, tim > ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 2011-04-24 13:45 ` David Ahern @ 2011-04-24 15:02 ` Lin Ming 0 siblings, 0 replies; 13+ messages in thread From: Lin Ming @ 2011-04-24 15:02 UTC (permalink / raw) To: David Ahern Cc: Tim Blechmann, Peter Zijlstra, Arnaldo Carvalho de Melo, linux-kernel On Sun, 2011-04-24 at 21:45 +0800, David Ahern wrote: > > On 04/24/11 05:47, Tim Blechmann wrote: > >>>> I know you've been busy with other stuff the past few weeks, but have > >>>> you had a chance to look into this? Basically, perf in 2.6.39 is broken > >>>> when trying to profile a process (-p argument to record or top). > >>> > >>> Let me take a look at this. > >> > >> Below patch fixes the same problem on my box. > >> Could you have a try it? > > > > i have done some quick tests with this patch applied on linus/master ... works > > fine for me, thanks a lot! > > Works for me as well. Thanks for test. I have send out the format patch. http://marc.info/?l=linux-kernel&m=130365710014862&w=2 Lin Ming > > > > >> >From 89f1ab02cd8da55f8829b2f2d7e700fdae77b3af Mon Sep 17 00:00:00 2001 > >> > >> From: Lin Ming <ming.m.lin@intel.com> > >> Date: Sat, 23 Apr 2011 14:54:33 +0000 > >> Subject: [PATCH] perf: Allow set output event for task in the same thread > >> group > >> > >> Signed-off-by: Lin Ming <ming.m.lin@intel.com> > > > > Tested-by: Tim Blechmann <tim@klingt.org> > > > > cheers, tim > > ^ permalink raw reply [flat|nested] 13+ messages in thread
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2011-04-06 10:51 [2.6.39-rc2] perf top fails to mmap Tim Blechmann
2011-04-06 15:20 ` David Ahern
2011-04-06 17:52 ` Arnaldo Carvalho de Melo
2011-04-06 20:48 ` Tim Blechmann
2011-04-06 22:15 ` David Ahern
2011-04-06 22:45 ` [2.6.39-rc2] perf top fails to mmap - bisected to 70db7533 David Ahern
2011-04-07 0:13 ` Arnaldo Carvalho de Melo
2011-04-22 16:37 ` David Ahern
2011-04-23 13:45 ` Lin Ming
[not found] ` <BANLkTikWpnnHAfO2n2rN6ExtQyrsVaiqEQ@mail.gmail.com>
2011-04-23 14:51 ` Lin Ming
2011-04-24 11:47 ` Tim Blechmann
2011-04-24 13:45 ` David Ahern
2011-04-24 15:02 ` Lin Ming
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