From: Stephane Eranian <eranian@google.com>
To: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: "Ingo Molnar" <mingo@elte.hu>,
linux-kernel@vger.kernel.org,
"Frédéric Weisbecker" <fweisbec@gmail.com>,
"Mike Galbraith" <efault@gmx.de>,
"Paul Mackerras" <paulus@samba.org>,
"Peter Zijlstra" <a.p.zijlstra@chello.nl>,
"Tom Zanussi" <tzanussi@gmail.com>
Subject: Re: [GIT PULL 0/2] perf session fix host_machine handling wrt build ids
Date: Wed, 19 May 2010 21:36:45 +0200 [thread overview]
Message-ID: <AANLkTindijJnIeElAkoj0CGC7nJwVEzIC_OlDbJ_adE8@mail.gmail.com> (raw)
In-Reply-To: <1274288493-15523-1-git-send-email-acme@infradead.org>
Hi,
On Wed, May 19, 2010 at 7:01 PM, Arnaldo Carvalho de Melo
<acme@infradead.org> wrote:
> Hi Ingo,
>
> Please pull from:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 perf
>
> Stephane and Tom,
>
> Now the build id code should be back working:
>
> [root@doppio linux-2.6-tip]# rm -rf /root/.debug/
> [root@doppio linux-2.6-tip]# perf record find / > /dev/null
> ^C[ perf record: Woken up 3 times to write data ]
> [ perf record: Captured and wrote 0.667 MB perf.data (~29163 samples) ]
> [root@doppio linux-2.6-tip]# perf buildid-list
> 349199a1e1b7cc25ac4f7004deed260f0146665e [kernel.kallsyms]
It is working again for me too. Thanks for the quick fix.
Related to .debug, I think it would be useful to have a choice as to
where all that stuff gets saved. It is hardcoded to $HOME today.
We could provide:
- an environment variable, e.g., PERFHOME or PERFDEBUGDIR
- an option to perf record, perf report, perf annotate, i.e., all commands
that use .debug
I looked at that today and I have a draft patch to add both the variable
+ the option.
The problem with the environment variable is that you tend to forget to
set it. As you suggest below, you may run perf report on another machine
too and you don't necessarily want to overwrite the .debug you may already
have in your $HOME dir. I think the option has the advantage of making this
explicit. It would still default to $HOME if not set.
> 1f095dcd586045d7aa158b4774b8b053e7f580a4 /lib/modules/2.6.34-rc6/kernel/net/ipv4/netfilter/nf_nat.ko
> 78913cef49182f29a0237d9867ff12811df00663 /lib/modules/2.6.34-rc6/kernel/drivers/md/dm-crypt.ko
> 5b2b076ef0b0be593d76c96fbd4393455380e589 /lib/modules/2.6.34-rc6/kernel/drivers/ata/sata_sil.ko
> b6c457f3d69870e6f68f2c61978f8e3beb25221c /lib/modules/2.6.34-rc6/kernel/drivers/net/e1000e/e1000e.ko
> 2249bf363819205e320e242af2e757906be5010e /lib/modules/2.6.34-rc6/kernel/drivers/gpu/drm/i915/i915.ko
> a8e4f743b40fb1fd8b85e2f9b88d93b661472b8f /bin/find
> eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 /lib64/libc-2.10.2.so
> 5c68f7afeb33309c78037e374b0deee84dd441f6 /lib64/libpthread-2.10.2.so
> [root@doppio linux-2.6-tip]# ls -la /root/.debug/
> total 28
> drwxr-xr-x 7 root root 4096 Mai 19 13:56 .
> drwxr-x---. 31 root root 4096 Mai 19 13:56 ..
> drwxr-xr-x 3 root root 4096 Mai 19 13:56 bin
> drwxr-xr-x 76 root root 4096 Mai 19 13:56 .build-id
> drwxr-xr-x 2 root root 4096 Mai 19 13:56 [kernel.kallsyms]
> drwxr-xr-x 3 root root 4096 Mai 19 13:56 lib
> drwxr-xr-x 4 root root 4096 Mai 19 13:56 lib64
> [root@doppio linux-2.6-tip]# ls -la /root/.debug/.build-id/
> 03/ 0c/ 13/ 1e/ 20/ 28/ 2b/ 2d/ 34/ 3b/ 3f/ 47/ 56/ 5b/ 5e/ 6e/ 72/ 7e/
> 85/ 87/ 94/ 98/ a0/ a5/ a8/ ac/ bc/ c8/ cc/ d9/ dd/ e2/ e8/ eb/ ef/ f2/
> fd/ 0b/ 0e/ 19/ 1f/ 22/ 29/ 2c/ 2e/ 39/ 3e/ 42/ 55/ 57/ 5c/ 62/ 6f/ 78/
> 80/ 86/ 91/ 97/ 99/ a1/ a7/ a9/ b6/ c6/ ca/ d8/ dc/ df/ e3/ e9/ ed/ f1/
> fa/ fe/
> [root@doppio linux-2.6-tip]# ls -la /root/.debug/lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
> -rwxr-xr-x 2 root root 1825560 Nov 20 09:29 /root/.debug/lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
> [root@doppio linux-2.6-tip]# ls -la /root/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
> lrwxrwxrwx 1 root root 67 Mai 19 13:56 /root/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 -> ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
> [root@doppio linux-2.6-tip]#
> [root@doppio linux-2.6-tip]# perf archive
> Now please run:
>
> $ tar xvf perf.data.tar.bz2 -C ~/.debug
>
> wherever you need to run 'perf report' on.
> [root@doppio linux-2.6-tip]#
>
> ot@doppio linux-2.6-tip]# tar tvf perf.data.tar.bz2
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/34/9199a1e1b7cc25ac4f7004deed260f0146665e -> ../../[kernel.kallsyms]/349199a1e1b7cc25ac4f7004deed260f0146665e
> -rw-r--r-- root/root 2842888 2010-05-19 13:56 [kernel.kallsyms]/349199a1e1b7cc25ac4f7004deed260f0146665e
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/1f/095dcd586045d7aa158b4774b8b053e7f580a4 -> ../../lib/modules/2.6.34-rc6/kernel/net/ipv4/netfilter/nf_nat.ko/1f095dcd586045d7aa158b4774b8b053e7f580a4
> -rw-r--r-- root/root 1670552 2010-04-30 11:43 lib/modules/2.6.34-rc6/kernel/net/ipv4/netfilter/nf_nat.ko/1f095dcd586045d7aa158b4774b8b053e7f580a4
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/78/913cef49182f29a0237d9867ff12811df00663 -> ../../lib/modules/2.6.34-rc6/kernel/drivers/md/dm-crypt.ko/78913cef49182f29a0237d9867ff12811df00663
> -rw-r--r-- root/root 326827 2010-04-30 11:43 lib/modules/2.6.34-rc6/kernel/drivers/md/dm-crypt.ko/78913cef49182f29a0237d9867ff12811df00663
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/5b/2b076ef0b0be593d76c96fbd4393455380e589 -> ../../lib/modules/2.6.34-rc6/kernel/drivers/ata/sata_sil.ko/5b2b076ef0b0be593d76c96fbd4393455380e589
> -rw-r--r-- root/root 325915 2010-04-30 11:43 lib/modules/2.6.34-rc6/kernel/drivers/ata/sata_sil.ko/5b2b076ef0b0be593d76c96fbd4393455380e589
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/b6/c457f3d69870e6f68f2c61978f8e3beb25221c -> ../../lib/modules/2.6.34-rc6/kernel/drivers/net/e1000e/e1000e.ko/b6c457f3d69870e6f68f2c61978f8e3beb25221c
> -rw-r--r-- root/root 2587163 2010-04-30 11:43 lib/modules/2.6.34-rc6/kernel/drivers/net/e1000e/e1000e.ko/b6c457f3d69870e6f68f2c61978f8e3beb25221c
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/22/49bf363819205e320e242af2e757906be5010e -> ../../lib/modules/2.6.34-rc6/kernel/drivers/gpu/drm/i915/i915.ko/2249bf363819205e320e242af2e757906be5010e
> -rw-r--r-- root/root 8296246 2010-04-30 11:43 lib/modules/2.6.34-rc6/kernel/drivers/gpu/drm/i915/i915.ko/2249bf363819205e320e242af2e757906be5010e
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/a8/e4f743b40fb1fd8b85e2f9b88d93b661472b8f -> ../../bin/find/a8e4f743b40fb1fd8b85e2f9b88d93b661472b8f
> -rwxr-xr-x root/root 233032 2009-02-24 14:13 bin/find/a8e4f743b40fb1fd8b85e2f9b88d93b661472b8f
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 -> ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
> -rwxr-xr-x root/root 1825560 2009-11-20 09:29 lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
> lrwxrwxrwx root/root 0 2010-05-19 13:56 .build-id/5c/68f7afeb33309c78037e374b0deee84dd441f6 -> ../../lib64/libpthread-2.10.2.so/5c68f7afeb33309c78037e374b0deee84dd441f6
> -rwxr-xr-x root/root 148528 2009-11-20 09:29 lib64/libpthread-2.10.2.so/5c68f7afeb33309c78037e374b0deee84dd441f6
> [root@doppio linux-2.6-tip]#
>
> Regards,
>
> - Arnaldo
>
> Arnaldo Carvalho de Melo (2):
> perf symbols: Don't try to read the build-id twice
> perf session: Make read_build_id routines look at the host_machine too
>
> tools/perf/util/header.c | 84 ++++++++++++++++++++++++++++-----------------
> tools/perf/util/session.c | 7 ++++
> tools/perf/util/session.h | 8 +---
> tools/perf/util/symbol.c | 13 ++++++-
> tools/perf/util/symbol.h | 1 +
> 5 files changed, 73 insertions(+), 40 deletions(-)
>
>
next prev parent reply other threads:[~2010-05-19 19:36 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-19 17:01 [GIT PULL 0/2] perf session fix host_machine handling wrt build ids Arnaldo Carvalho de Melo
2010-05-19 17:01 ` [PATCH 1/2] perf symbols: Don't try to read the build-id twice Arnaldo Carvalho de Melo
2010-05-19 17:01 ` [PATCH 2/2] perf session: Make read_build_id routines look at the host_machine too Arnaldo Carvalho de Melo
2010-05-19 19:36 ` Stephane Eranian [this message]
2010-05-19 20:11 ` [GIT PULL 0/2] perf session fix host_machine handling wrt build ids Arnaldo Carvalho de Melo
2010-05-19 20:55 ` Stephane Eranian
2010-05-20 14:23 ` Arnaldo Carvalho de Melo
2010-05-20 4:14 ` Tom Zanussi
2010-05-20 9:54 ` Stephane Eranian
2010-05-20 14:29 ` Arnaldo Carvalho de Melo
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