[tip:perf/core] perf top: Support lookup of symbols in other mount namespaces.

Commit-ID: 868a832918f621b7576655c00067f20326ef3931 Gitweb: http://git.kernel.org/tip/868a832918f621b7576655c00067f20326ef3931 Author: Krister Johansen <k...@templeofstupid.com> AuthorDate: Wed, 5 Jul 2017 18:48:12 -0700 Committer: Arnaldo Carvalho de Melo <a...@redhat.com>

[tip:perf/core] perf top: Support lookup of symbols in other mount namespaces.

Commit-ID: 868a832918f621b7576655c00067f20326ef3931 Gitweb: http://git.kernel.org/tip/868a832918f621b7576655c00067f20326ef3931 Author: Krister Johansen AuthorDate: Wed, 5 Jul 2017 18:48:12 -0700 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 25 Jul 2017 22:43:16 -0300 perf top

[tip:perf/core] perf probe: Allow placing uprobes in alternate namespaces.

Commit-ID: 544abd44c7064c8a58a6bd2073d757f6b91d98c5 Gitweb: http://git.kernel.org/tip/544abd44c7064c8a58a6bd2073d757f6b91d98c5 Author: Krister Johansen <k...@templeofstupid.com> AuthorDate: Wed, 5 Jul 2017 18:48:10 -0700 Committer: Arnaldo Carvalho de Melo <a...@redhat.com>

[tip:perf/core] perf probe: Allow placing uprobes in alternate namespaces.

Commit-ID: 544abd44c7064c8a58a6bd2073d757f6b91d98c5 Gitweb: http://git.kernel.org/tip/544abd44c7064c8a58a6bd2073d757f6b91d98c5 Author: Krister Johansen AuthorDate: Wed, 5 Jul 2017 18:48:10 -0700 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 18 Jul 2017 23:14:10 -0300 perf probe

[tip:perf/core] perf buildid-cache: Cache debuginfo

Commit-ID: d2396999c998b4e0006aef247e154eff0ed3d8f9 Gitweb: http://git.kernel.org/tip/d2396999c998b4e0006aef247e154eff0ed3d8f9 Author: Krister Johansen <k...@templeofstupid.com> AuthorDate: Wed, 5 Jul 2017 18:48:13 -0700 Committer: Arnaldo Carvalho de Melo <a...@redhat.com>

[tip:perf/core] perf buildid-cache: Cache debuginfo

Commit-ID: d2396999c998b4e0006aef247e154eff0ed3d8f9 Gitweb: http://git.kernel.org/tip/d2396999c998b4e0006aef247e154eff0ed3d8f9 Author: Krister Johansen AuthorDate: Wed, 5 Jul 2017 18:48:13 -0700 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 18 Jul 2017 23:14:11 -0300 perf

[tip:perf/core] perf buildid-cache: Support binary objects from other namespaces

Commit-ID: f045b8c4b36baddcfbdd4d3d956446e688b0b3cd Gitweb: http://git.kernel.org/tip/f045b8c4b36baddcfbdd4d3d956446e688b0b3cd Author: Krister Johansen <k...@templeofstupid.com> AuthorDate: Wed, 5 Jul 2017 18:48:11 -0700 Committer: Arnaldo Carvalho de Melo <a...@redhat.com>

[tip:perf/core] perf buildid-cache: Support binary objects from other namespaces

Commit-ID: f045b8c4b36baddcfbdd4d3d956446e688b0b3cd Gitweb: http://git.kernel.org/tip/f045b8c4b36baddcfbdd4d3d956446e688b0b3cd Author: Krister Johansen AuthorDate: Wed, 5 Jul 2017 18:48:11 -0700 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 18 Jul 2017 23:14:11 -0300 perf

[tip:perf/core] perf maps: Lookup maps in both intitial mountns and inner mountns.

Commit-ID: bf2e710b3cb8445c052f2ff50b4875a2523bb279 Gitweb: http://git.kernel.org/tip/bf2e710b3cb8445c052f2ff50b4875a2523bb279 Author: Krister Johansen <k...@templeofstupid.com> AuthorDate: Wed, 5 Jul 2017 18:48:09 -0700 Committer: Arnaldo Carvalho de Melo <a...@redhat.com>

[tip:perf/core] perf maps: Lookup maps in both intitial mountns and inner mountns.

Commit-ID: bf2e710b3cb8445c052f2ff50b4875a2523bb279 Gitweb: http://git.kernel.org/tip/bf2e710b3cb8445c052f2ff50b4875a2523bb279 Author: Krister Johansen AuthorDate: Wed, 5 Jul 2017 18:48:09 -0700 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 18 Jul 2017 23:14:09 -0300 perf maps

[tip:perf/core] perf symbols: Find symbols in different mount namespace

Commit-ID: 843ff37bb59edbe51d64e77ba1b3245a15a4dd9f Gitweb: http://git.kernel.org/tip/843ff37bb59edbe51d64e77ba1b3245a15a4dd9f Author: Krister Johansen <k...@templeofstupid.com> AuthorDate: Wed, 5 Jul 2017 18:48:08 -0700 Committer: Arnaldo Carvalho de Melo <a...@redhat.com>

[tip:perf/core] perf symbols: Find symbols in different mount namespace

Commit-ID: 843ff37bb59edbe51d64e77ba1b3245a15a4dd9f Gitweb: http://git.kernel.org/tip/843ff37bb59edbe51d64e77ba1b3245a15a4dd9f Author: Krister Johansen AuthorDate: Wed, 5 Jul 2017 18:48:08 -0700 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 18 Jul 2017 23:14:09 -0300 perf

Re: [PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

On Tue, Jul 11, 2017 at 09:51:16AM -0300, Arnaldo Carvalho de Melo wrote: > Right, we need to use the build-id and look it up in a database > populated somehow. > > perf right now, by default, collects the build-ids in a table, at the > end of the recording session, trying not to disrupt the

Re: [PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

On Tue, Jul 11, 2017 at 09:51:16AM -0300, Arnaldo Carvalho de Melo wrote: > Right, we need to use the build-id and look it up in a database > populated somehow. > > perf right now, by default, collects the build-ids in a table, at the > end of the recording session, trying not to disrupt the

Re: [PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

On Mon, Jul 10, 2017 at 07:52:49PM -0300, Arnaldo Carvalho de Melo wrote: > Em Mon, Jul 10, 2017 at 03:39:25PM -0700, Krister Johansen escreveu: > > On Mon, Jul 10, 2017 at 08:17:00AM +0200, Thomas-Mich Richter wrote: > > > On 07/07/2017 09:36 PM, Krister Johansen wrote: >

Re: [PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

On Mon, Jul 10, 2017 at 07:52:49PM -0300, Arnaldo Carvalho de Melo wrote: > Em Mon, Jul 10, 2017 at 03:39:25PM -0700, Krister Johansen escreveu: > > On Mon, Jul 10, 2017 at 08:17:00AM +0200, Thomas-Mich Richter wrote: > > > On 07/07/2017 09:36 PM, Krister Johansen wrote: >

Re: [PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

On Mon, Jul 10, 2017 at 08:17:00AM +0200, Thomas-Mich Richter wrote: > On 07/07/2017 09:36 PM, Krister Johansen wrote: > > On Thu, Jul 06, 2017 at 04:41:30PM -0300, Arnaldo Carvalho de Melo wrote: > >> Em Wed, Jul 05, 2017 at 06:48:08PM -0700, Krister Johansen escreveu: &g

Re: [PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

On Mon, Jul 10, 2017 at 08:17:00AM +0200, Thomas-Mich Richter wrote: > On 07/07/2017 09:36 PM, Krister Johansen wrote: > > On Thu, Jul 06, 2017 at 04:41:30PM -0300, Arnaldo Carvalho de Melo wrote: > >> Em Wed, Jul 05, 2017 at 06:48:08PM -0700, Krister Johansen escreveu: &g

Re: [PATCH 4.9 00/41] 4.9.37-stable review

Hey Greg, On Mon, Jul 10, 2017 at 07:10:33PM +0200, Greg Kroah-Hartman wrote: > This is the start of the stable review cycle for the 4.9.37 release. > There are 41 patches in this series, all will be posted as a response > to this one. If anyone has any issues with these being applied, please >

Re: [PATCH 4.9 00/41] 4.9.37-stable review

Hey Greg, On Mon, Jul 10, 2017 at 07:10:33PM +0200, Greg Kroah-Hartman wrote: > This is the start of the stable review cycle for the 4.9.37 release. > There are 41 patches in this series, all will be posted as a response > to this one. If anyone has any issues with these being applied, please >

Re: [PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

On Thu, Jul 06, 2017 at 04:41:30PM -0300, Arnaldo Carvalho de Melo wrote: > Em Wed, Jul 05, 2017 at 06:48:08PM -0700, Krister Johansen escreveu: > > Teach perf how to resolve symbols from binaries that are in a different > > mount namespace from the tool. This allows perf to gene

Re: [PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

On Thu, Jul 06, 2017 at 04:41:30PM -0300, Arnaldo Carvalho de Melo wrote: > Em Wed, Jul 05, 2017 at 06:48:08PM -0700, Krister Johansen escreveu: > > Teach perf how to resolve symbols from binaries that are in a different > > mount namespace from the tool. This allows perf to gene

[PATCH v2 tip/perf/core 4/6] perf buildid-cache: support binary objects from other namespaces

alternate mount namespaces. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/Documentation/perf-buildid-cache.txt | 5 +++ tools/perf/Documentation/perf-probe.txt | 5 +++ tools/perf/builtin-buildid-cache.c | 52 ++--- tool

[PATCH v2 tip/perf/core 4/6] perf buildid-cache: support binary objects from other namespaces

alternate mount namespaces. Signed-off-by: Krister Johansen --- tools/perf/Documentation/perf-buildid-cache.txt | 5 +++ tools/perf/Documentation/perf-probe.txt | 5 +++ tools/perf/builtin-buildid-cache.c | 52 ++--- tools/perf/builtin-probe.c

[PATCH v2 tip/perf/core 3/6] perf probe: allow placing uprobes in alternate namespaces.

Teaches perf how to place a uprobe on a file that's in a different mount namespace. The user must add the probe using the --target-ns argument to perf probe. Once it has been placed, it may be recorded against without further namespace-specific commands. Signed-off-by: Krister Johansen &l

[PATCH v2 tip/perf/core 3/6] perf probe: allow placing uprobes in alternate namespaces.

Teaches perf how to place a uprobe on a file that's in a different mount namespace. The user must add the probe using the --target-ns argument to perf probe. Once it has been placed, it may be recorded against without further namespace-specific commands. Signed-off-by: Krister Johansen

[PATCH v2 tip/perf/core 6/6] perf buildid-cache: cache debuginfo

. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/builtin-buildid-cache.c | 2 +- tools/perf/util/annotate.c | 2 +- tools/perf/util/build-id.c | 72 +++--- tools/perf/util/build-id.h | 3 +- tools/perf/util

[PATCH v2 tip/perf/core 2/6] perf maps: lookup maps in both intitial mountns and inner mountns.

. If all else fails, use the original pid. This allows us to locate a symbol map file in the mount namespace, if it was generated there. However, we also try the tool's /tmp in case it's there instead. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/util/machine.c

[PATCH v2 tip/perf/core 5/6] perf top: support lookup of symbols in other mount namespaces.

The perf top command needs to unshare its fs from the helper threads in order to successfully setns(2) during its symbol lookup. It also needs to impelement a force flag to ignore ownership of perf-.map files. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tool

[PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

Teach perf how to resolve symbols from binaries that are in a different mount namespace from the tool. This allows perf to generate meaningful stack traces even if the binary resides in a different mount namespace from the tool. Signed-off-by: Krister Johansen <k...@templeofstupid.

[PATCH v2 tip/perf/core 6/6] perf buildid-cache: cache debuginfo

. Signed-off-by: Krister Johansen --- tools/perf/builtin-buildid-cache.c | 2 +- tools/perf/util/annotate.c | 2 +- tools/perf/util/build-id.c | 72 +++--- tools/perf/util/build-id.h | 3 +- tools/perf/util/dso.c | 8

[PATCH v2 tip/perf/core 2/6] perf maps: lookup maps in both intitial mountns and inner mountns.

. If all else fails, use the original pid. This allows us to locate a symbol map file in the mount namespace, if it was generated there. However, we also try the tool's /tmp in case it's there instead. Signed-off-by: Krister Johansen --- tools/perf/util/machine.c| 4 +-- tools/perf/util/map.c

[PATCH v2 tip/perf/core 5/6] perf top: support lookup of symbols in other mount namespaces.

The perf top command needs to unshare its fs from the helper threads in order to successfully setns(2) during its symbol lookup. It also needs to impelement a force flag to ignore ownership of perf-.map files. Signed-off-by: Krister Johansen --- tools/perf/Documentation/perf-top.txt | 4

[PATCH v2 tip/perf/core 1/6] perf symbols: find symbols in different mount namespace

Teach perf how to resolve symbols from binaries that are in a different mount namespace from the tool. This allows perf to generate meaningful stack traces even if the binary resides in a different mount namespace from the tool. Signed-off-by: Krister Johansen --- tools/perf/util/dso.c

[PATCH v2 tip/perf/core 0/6] namespace tracing improvements

ons (Brendan) - add perf-probe examples for uprobes and USDT (Brendan) Krister Johansen (6): perf symbols: find symbols in different mount namespace perf maps: lookup maps in both intitial mountns and inner mountns. perf probe: allow placing uprobes in alternate namespaces. perf buildid-ca

[PATCH v2 tip/perf/core 0/6] namespace tracing improvements

ons (Brendan) - add perf-probe examples for uprobes and USDT (Brendan) Krister Johansen (6): perf symbols: find symbols in different mount namespace perf maps: lookup maps in both intitial mountns and inner mountns. perf probe: allow placing uprobes in alternate namespaces. perf buildid-ca

Re: [PATCH tip/perf/core 3/7] perf probe: allow placing uprobes in alternate namespaces.

On Mon, Jul 03, 2017 at 03:46:41PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jun 30, 2017 at 07:18:55PM -0700, Krister Johansen escreveu: > > Teaches perf how to place a uprobe on a file that's in a different mount > > namespace. The user must add the probe using the --tar

Re: [PATCH tip/perf/core 3/7] perf probe: allow placing uprobes in alternate namespaces.

On Mon, Jul 03, 2017 at 03:46:41PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jun 30, 2017 at 07:18:55PM -0700, Krister Johansen escreveu: > > Teaches perf how to place a uprobe on a file that's in a different mount > > namespace. The user must add the probe using the --tar

Re: [PATCH tip/perf/core 6/7] perf documentation: updates for target-ns.

On Mon, Jul 03, 2017 at 03:48:36PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jun 30, 2017 at 07:18:58PM -0700, Krister Johansen escreveu: > > Update the perf documentation to describe the --target-ns option to > > probe and buildid-cache. Note the existence of the n

Re: [PATCH tip/perf/core 6/7] perf documentation: updates for target-ns.

On Mon, Jul 03, 2017 at 03:48:36PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jun 30, 2017 at 07:18:58PM -0700, Krister Johansen escreveu: > > Update the perf documentation to describe the --target-ns option to > > probe and buildid-cache. Note the existence of the n

Re: [PATCH tip/perf/core 1/7] perf symbols: find symbols in different mount namespace

On Mon, Jul 03, 2017 at 03:38:27PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jun 30, 2017 at 07:18:53PM -0700, Krister Johansen escreveu: > > Teach perf how to resolve symbols from binaries that are in a different > > mount namespace from the tool. This allows perf to gene

Re: [PATCH tip/perf/core 1/7] perf symbols: find symbols in different mount namespace

On Mon, Jul 03, 2017 at 03:38:27PM -0300, Arnaldo Carvalho de Melo wrote: > Em Fri, Jun 30, 2017 at 07:18:53PM -0700, Krister Johansen escreveu: > > Teach perf how to resolve symbols from binaries that are in a different > > mount namespace from the tool. This allows perf to gene

Re: [PATCH 4.9 131/172] perf probe: Fix to probe on gcc generated functions in modules

Hey Greg, > 4.9-stable review patch. If anyone has any objections, please let me know. > > -- > > From: Masami Hiramatsu > > > [ Upstream commit 613f050d68a8ed3c0b18b9568698908ef7bbc1f7 ] > > Fix to probe on gcc generated functions on modules. Since >

Re: [PATCH 4.9 131/172] perf probe: Fix to probe on gcc generated functions in modules

Hey Greg, > 4.9-stable review patch. If anyone has any objections, please let me know. > > -- > > From: Masami Hiramatsu > > > [ Upstream commit 613f050d68a8ed3c0b18b9568698908ef7bbc1f7 ] > > Fix to probe on gcc generated functions on modules. Since > probing on a module is

[PATCH tip/perf/core 2/7] perf maps: lookup maps in both intitial mountns and inner mountns.

. If all else fails, use the original pid. This allows us to locate a symbol map file in the mount namespace, if it was generated there. However, we also try the tool's /tmp in case it's there instead. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/util/machine.c

[PATCH tip/perf/core 2/7] perf maps: lookup maps in both intitial mountns and inner mountns.

. If all else fails, use the original pid. This allows us to locate a symbol map file in the mount namespace, if it was generated there. However, we also try the tool's /tmp in case it's there instead. Signed-off-by: Krister Johansen --- tools/perf/util/machine.c| 19 -- tools/perf/util

[PATCH tip/perf/core 1/7] perf symbols: find symbols in different mount namespace

Teach perf how to resolve symbols from binaries that are in a different mount namespace from the tool. This allows perf to generate meaningful stack traces even if the binary resides in a different mount namespace from the tool. Signed-off-by: Krister Johansen <k...@templeofstupid.

[PATCH tip/perf/core 7/7] perf buildid-cache: cache debuginfo

. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/builtin-buildid-cache.c | 2 +- tools/perf/util/annotate.c | 2 +- tools/perf/util/build-id.c | 72 +++--- tools/perf/util/build-id.h | 3 +- tools/perf/util

[PATCH tip/perf/core 5/7] perf top: support lookup of symbols in other mount namespaces.

The perf top command needs to unshare its fs from the helper threads in order to successfully setns(2) during its symbol lookup. It also needs to impelement a force flag to ignore ownership of perf-.map files. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/b

[PATCH tip/perf/core 6/7] perf documentation: updates for target-ns.

Update the perf documentation to describe the --target-ns option to probe and buildid-cache. Note the existence of the new --force flag to top. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/Documentation/perf-buildid-cache.txt | 5 + tools/perf/Documentatio

[PATCH tip/perf/core 1/7] perf symbols: find symbols in different mount namespace

Teach perf how to resolve symbols from binaries that are in a different mount namespace from the tool. This allows perf to generate meaningful stack traces even if the binary resides in a different mount namespace from the tool. Signed-off-by: Krister Johansen --- tools/perf/util/dso.c

[PATCH tip/perf/core 7/7] perf buildid-cache: cache debuginfo

. Signed-off-by: Krister Johansen --- tools/perf/builtin-buildid-cache.c | 2 +- tools/perf/util/annotate.c | 2 +- tools/perf/util/build-id.c | 72 +++--- tools/perf/util/build-id.h | 3 +- tools/perf/util/dso.c | 8

[PATCH tip/perf/core 5/7] perf top: support lookup of symbols in other mount namespaces.

The perf top command needs to unshare its fs from the helper threads in order to successfully setns(2) during its symbol lookup. It also needs to impelement a force flag to ignore ownership of perf-.map files. Signed-off-by: Krister Johansen --- tools/perf/builtin-top.c | 15 +++ 1

[PATCH tip/perf/core 6/7] perf documentation: updates for target-ns.

Update the perf documentation to describe the --target-ns option to probe and buildid-cache. Note the existence of the new --force flag to top. Signed-off-by: Krister Johansen --- tools/perf/Documentation/perf-buildid-cache.txt | 5 + tools/perf/Documentation/perf-probe.txt | 5

[PATCH tip/perf/core 3/7] perf probe: allow placing uprobes in alternate namespaces.

Teaches perf how to place a uprobe on a file that's in a different mount namespace. The user must add the probe using the --target-ns argument to perf probe. Once it has been placed, it may be recorded against without further namespace-specific commands. Signed-off-by: Krister Johansen &l

[PATCH tip/perf/core 0/7] namespace tracing improvements

Krister Johansen (7): perf symbols: find symbols in different mount namespace perf maps: lookup maps in both intitial mountns and inner mountns. perf probe: allow placing uprobes in alternate namespaces. perf buildid-cache: support binary objects from other namespaces perf top: support lookup

[PATCH tip/perf/core 4/7] perf buildid-cache: support binary objects from other namespaces

alternate mount namespaces. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/builtin-buildid-cache.c | 52 +++--- tools/perf/builtin-probe.c | 2 +- tools/perf/tests/sdt.c | 4 +-- tools/perf/util/build-id.c

[PATCH tip/perf/core 3/7] perf probe: allow placing uprobes in alternate namespaces.

Teaches perf how to place a uprobe on a file that's in a different mount namespace. The user must add the probe using the --target-ns argument to perf probe. Once it has been placed, it may be recorded against without further namespace-specific commands. Signed-off-by: Krister Johansen

[PATCH tip/perf/core 0/7] namespace tracing improvements

Krister Johansen (7): perf symbols: find symbols in different mount namespace perf maps: lookup maps in both intitial mountns and inner mountns. perf probe: allow placing uprobes in alternate namespaces. perf buildid-cache: support binary objects from other namespaces perf top: support lookup

[PATCH tip/perf/core 4/7] perf buildid-cache: support binary objects from other namespaces

alternate mount namespaces. Signed-off-by: Krister Johansen --- tools/perf/builtin-buildid-cache.c | 52 +++--- tools/perf/builtin-probe.c | 2 +- tools/perf/tests/sdt.c | 4 +-- tools/perf/util/build-id.c | 48

Re: [PATCH 2/4] swait: add the missing killable swaits

On Thu, Jun 29, 2017 at 09:03:42PM -0700, Linus Torvalds wrote: > On Thu, Jun 29, 2017 at 12:15 PM, Marcelo Tosatti wrote: > > On Thu, Jun 29, 2017 at 09:13:29AM -0700, Linus Torvalds wrote: > >> > >> swait uses special locking and has odd semantics that are not at all > >>

Re: [PATCH 2/4] swait: add the missing killable swaits

On Thu, Jun 29, 2017 at 09:03:42PM -0700, Linus Torvalds wrote: > On Thu, Jun 29, 2017 at 12:15 PM, Marcelo Tosatti wrote: > > On Thu, Jun 29, 2017 at 09:13:29AM -0700, Linus Torvalds wrote: > >> > >> swait uses special locking and has odd semantics that are not at all > >> the same as the

Re: [PATCH tip/sched/core] Add comments to aid in safer usage of swake_up.

On Wed, Jun 14, 2017 at 11:02:40AM -0400, Steven Rostedt wrote: > On Wed, 14 Jun 2017 09:10:15 -0400 > Steven Rostedt wrote: > > > Now let's make it simpler. I'll even add the READ_ONCE and WRITE_ONCE > > where applicable. > > > > > > CPU0

Re: [PATCH tip/sched/core] Add comments to aid in safer usage of swake_up.

On Wed, Jun 14, 2017 at 11:02:40AM -0400, Steven Rostedt wrote: > On Wed, 14 Jun 2017 09:10:15 -0400 > Steven Rostedt wrote: > > > Now let's make it simpler. I'll even add the READ_ONCE and WRITE_ONCE > > where applicable. > > > > > > CPU0CPU1 > >

[PATCH tip/sched/core] Add comments to aid in safer usage of swake_up.

. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- include/linux/swait.h | 27 +++ kernel/sched/swait.c | 18 +- 2 files changed, 44 insertions(+), 1 deletion(-) This came out of a discussion that Paul McKenney and I had about whether

[PATCH tip/sched/core] Add comments to aid in safer usage of swake_up.

. Signed-off-by: Krister Johansen --- include/linux/swait.h | 27 +++ kernel/sched/swait.c | 18 +- 2 files changed, 44 insertions(+), 1 deletion(-) This came out of a discussion that Paul McKenney and I had about whether other callers of swake_up() knew

Re: [PATCH tip/core/rcu 45/88] rcu: Add memory barriers for NOCB leader wakeup

On Thu, Jun 08, 2017 at 04:47:43PM -0700, Paul E. McKenney wrote: > On Thu, Jun 08, 2017 at 02:28:14PM -0700, Krister Johansen wrote: > > On Thu, Jun 08, 2017 at 01:55:00PM -0700, Paul E. McKenney wrote: > > > Interesting! This is the first that I have heard that this was an

Re: [PATCH tip/core/rcu 45/88] rcu: Add memory barriers for NOCB leader wakeup

On Thu, Jun 08, 2017 at 04:47:43PM -0700, Paul E. McKenney wrote: > On Thu, Jun 08, 2017 at 02:28:14PM -0700, Krister Johansen wrote: > > On Thu, Jun 08, 2017 at 01:55:00PM -0700, Paul E. McKenney wrote: > > > Interesting! This is the first that I have heard that this was an

Re: [PATCH tip/core/rcu 45/88] rcu: Add memory barriers for NOCB leader wakeup

On Thu, Jun 08, 2017 at 01:55:00PM -0700, Paul E. McKenney wrote: > On Thu, Jun 08, 2017 at 01:11:48PM -0700, Krister Johansen wrote: > > May I impose upon you to CC this patch to stable, and tag it as fixing > > abedf8e241? I ran into this on a production 4.9 branch. When I >

Re: [PATCH tip/core/rcu 45/88] rcu: Add memory barriers for NOCB leader wakeup

On Thu, Jun 08, 2017 at 01:55:00PM -0700, Paul E. McKenney wrote: > On Thu, Jun 08, 2017 at 01:11:48PM -0700, Krister Johansen wrote: > > May I impose upon you to CC this patch to stable, and tag it as fixing > > abedf8e241? I ran into this on a production 4.9 branch. When I >

Re: [PATCH tip/core/rcu 45/88] rcu: Add memory barriers for NOCB leader wakeup

Hi Paul, On Thu, May 25, 2017 at 02:59:18PM -0700, Paul E. McKenney wrote: > Wait/wakeup operations do not guarantee ordering on their own. Instead, > either locking or memory barriers are required. This commit therefore > adds memory barriers to wake_nocb_leader() and nocb_leader_wait(). > >

Re: [PATCH tip/core/rcu 45/88] rcu: Add memory barriers for NOCB leader wakeup

Hi Paul, On Thu, May 25, 2017 at 02:59:18PM -0700, Paul E. McKenney wrote: > Wait/wakeup operations do not guarantee ordering on their own. Instead, > either locking or memory barriers are required. This commit therefore > adds memory barriers to wake_nocb_leader() and nocb_leader_wait(). > >

[tip:perf/urgent] perf callchain: Reference count maps

Commit-ID: aa33b9b9a2ebb00d33c83a5312d4fbf2d5aeba36 Gitweb: http://git.kernel.org/tip/aa33b9b9a2ebb00d33c83a5312d4fbf2d5aeba36 Author: Krister Johansen <k...@templeofstupid.com> AuthorDate: Thu, 5 Jan 2017 22:23:31 -0800 Committer: Arnaldo Carvalho de Melo <a...@redhat.com>

[tip:perf/urgent] perf callchain: Reference count maps

Commit-ID: aa33b9b9a2ebb00d33c83a5312d4fbf2d5aeba36 Gitweb: http://git.kernel.org/tip/aa33b9b9a2ebb00d33c83a5312d4fbf2d5aeba36 Author: Krister Johansen AuthorDate: Thu, 5 Jan 2017 22:23:31 -0800 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 2 Feb 2017 11:39:09 -0300 perf

[tip:perf/core] perf callchain: Reference count maps

Commit-ID: 9c68ae98c6f714ef573826cfc9055af1bd5e97b1 Gitweb: http://git.kernel.org/tip/9c68ae98c6f714ef573826cfc9055af1bd5e97b1 Author: Krister Johansen <k...@templeofstupid.com> AuthorDate: Thu, 5 Jan 2017 22:23:31 -0800 Committer: Arnaldo Carvalho de Melo <a...@redhat.com>

[tip:perf/core] perf callchain: Reference count maps

Commit-ID: 9c68ae98c6f714ef573826cfc9055af1bd5e97b1 Gitweb: http://git.kernel.org/tip/9c68ae98c6f714ef573826cfc9055af1bd5e97b1 Author: Krister Johansen AuthorDate: Thu, 5 Jan 2017 22:23:31 -0800 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 31 Jan 2017 16:19:06 -0300 perf

Re: [PATCH v3 perf/core] perf script: fix a use after free crash.

Hey Arnaldo, On Thu, Jan 05, 2017 at 10:23:31PM -0800, Krister Johansen wrote: > If dso__load_kcore frees all of the existing maps, but one has already > been attached to a callchain cursor node, then we can get a SIGSEGV in > any function that happens to try to use this invalid cur

Re: [PATCH v3 perf/core] perf script: fix a use after free crash.

Hey Arnaldo, On Thu, Jan 05, 2017 at 10:23:31PM -0800, Krister Johansen wrote: > If dso__load_kcore frees all of the existing maps, but one has already > been attached to a callchain cursor node, then we can get a SIGSEGV in > any function that happens to try to use this invalid cur

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

On Wed, Jan 04, 2017 at 12:37:39AM -0800, Krister Johansen wrote: > On Mon, Jan 02, 2017 at 09:30:33PM -0300, Arnaldo Carvalho de Melo wrote: > > Em Mon, Jan 02, 2017 at 04:39:04PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Em Mon, Jan 02, 2017 at 02:36:57PM -0300, Arnald

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

On Wed, Jan 04, 2017 at 12:37:39AM -0800, Krister Johansen wrote: > On Mon, Jan 02, 2017 at 09:30:33PM -0300, Arnaldo Carvalho de Melo wrote: > > Em Mon, Jan 02, 2017 at 04:39:04PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Em Mon, Jan 02, 2017 at 02:36:57PM -0300, Arnald

[PATCH v3 perf/core] perf script: fix a use after free crash.

iterates past the node. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/util/callchain.c | 11 +-- tools/perf/util/callchain.h | 6 ++ tools/perf/util/hist.c | 10 ++ 3 files changed, 25 insertions(+), 2 deletions(-) diff --git a/tools/per

[PATCH v3 perf/core] perf script: fix a use after free crash.

iterates past the node. Signed-off-by: Krister Johansen --- tools/perf/util/callchain.c | 11 +-- tools/perf/util/callchain.h | 6 ++ tools/perf/util/hist.c | 10 ++ 3 files changed, 25 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/callchain.c b/tools/perf/util

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

On Mon, Jan 02, 2017 at 09:30:33PM -0300, Arnaldo Carvalho de Melo wrote: > Em Mon, Jan 02, 2017 at 04:39:04PM -0300, Arnaldo Carvalho de Melo escreveu: > > Em Mon, Jan 02, 2017 at 02:36:57PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Em Mon, Jan 02, 2017 at 02:35:30PM -0300, Arnaldo Carvalho

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

On Mon, Jan 02, 2017 at 09:30:33PM -0300, Arnaldo Carvalho de Melo wrote: > Em Mon, Jan 02, 2017 at 04:39:04PM -0300, Arnaldo Carvalho de Melo escreveu: > > Em Mon, Jan 02, 2017 at 02:36:57PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Em Mon, Jan 02, 2017 at 02:35:30PM -0300, Arnaldo Carvalho

Re: [PATCH v4 0/3] perf: add support for analyzing events for containers

On Tue, Jan 03, 2017 at 04:57:54PM +0530, Hari Bathini wrote: > On Thursday 29 December 2016 07:11 AM, Krister Johansen wrote: > >On Fri, Dec 16, 2016 at 12:06:55AM +0530, Hari Bathini wrote: > >>This patch-set overcomes this limitation by using cgroup identifier as > >>

Re: [PATCH v4 0/3] perf: add support for analyzing events for containers

On Tue, Jan 03, 2017 at 04:57:54PM +0530, Hari Bathini wrote: > On Thursday 29 December 2016 07:11 AM, Krister Johansen wrote: > >On Fri, Dec 16, 2016 at 12:06:55AM +0530, Hari Bathini wrote: > >>This patch-set overcomes this limitation by using cgroup identifier as > >>

Re: [PATCH v4 0/3] perf: add support for analyzing events for containers

On Fri, Dec 16, 2016 at 12:06:55AM +0530, Hari Bathini wrote: > This patch-set overcomes this limitation by using cgroup identifier as > container unique identifier. A new PERF_RECORD_NAMESPACES event that > records namespaces related info is introduced, from which the cgroup > namespace's device

Re: [PATCH v4 0/3] perf: add support for analyzing events for containers

On Fri, Dec 16, 2016 at 12:06:55AM +0530, Hari Bathini wrote: > This patch-set overcomes this limitation by using cgroup identifier as > container unique identifier. A new PERF_RECORD_NAMESPACES event that > records namespaces related info is introduced, from which the cgroup > namespace's device

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

Aborted (core dumped) > [root@jouet ~]# > > > I'll try to investigate this further later/tomorrow, find the updated patch > below. > > - Arnaldo > > commit af04d2c4a5d1f6bd7f4971118e4e1153cc7c2506 > Author: Krister Johansen <k...@tem

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

Aborted (core dumped) > [root@jouet ~]# > > > I'll try to investigate this further later/tomorrow, find the updated patch > below. > > - Arnaldo > > commit af04d2c4a5d1f6bd7f4971118e4e1153cc7c2506 > Author: Krister Johansen > Date: Tue Oct

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

Hey Arnaldo, On Tue, Nov 22, 2016 at 04:01:06PM -0300, Arnaldo Carvalho de Melo wrote: > Em Thu, Nov 10, 2016 at 04:40:46PM -0800, Krister Johansen escreveu: > > Thanks. As part of processing this did you run into any problems? > > Would you like me to rebase against the latest p

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

Hey Arnaldo, On Tue, Nov 22, 2016 at 04:01:06PM -0300, Arnaldo Carvalho de Melo wrote: > Em Thu, Nov 10, 2016 at 04:40:46PM -0800, Krister Johansen escreveu: > > Thanks. As part of processing this did you run into any problems? > > Would you like me to rebase against the latest p

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

On Wed, Oct 26, 2016 at 11:44:53AM -0200, Arnaldo Carvalho de Melo wrote: > Em Tue, Oct 25, 2016 at 05:20:10PM -0700, Krister Johansen escreveu: > > On Tue, Oct 11, 2016 at 02:28:39AM -0700, Krister Johansen wrote: > > > If dso__load_kcore frees all of the existing maps, b

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

On Wed, Oct 26, 2016 at 11:44:53AM -0200, Arnaldo Carvalho de Melo wrote: > Em Tue, Oct 25, 2016 at 05:20:10PM -0700, Krister Johansen escreveu: > > On Tue, Oct 11, 2016 at 02:28:39AM -0700, Krister Johansen wrote: > > > If dso__load_kcore frees all of the existing maps, b

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

On Tue, Oct 11, 2016 at 02:28:39AM -0700, Krister Johansen wrote: > If dso__load_kcore frees all of the existing maps, but one has already > been attached to a callchain cursor node, then we can get a SIGSEGV in > any function that happens to try to use this invalid cursor. Use the >

Re: [PATCH v2 perf/core] perf script: fix a use after free crash.

On Tue, Oct 11, 2016 at 02:28:39AM -0700, Krister Johansen wrote: > If dso__load_kcore frees all of the existing maps, but one has already > been attached to a callchain cursor node, then we can get a SIGSEGV in > any function that happens to try to use this invalid cursor. Use the >

Re: [PATCH v4 3/3] Make core_pattern support namespace

On Tue, Oct 25, 2016 at 03:28:56PM +0800, Cao Shufeng wrote: > From: Zhao Lei > It will bring us following benefit: > 1: Each container can change their own coredump setting >based on operation on /proc/sys/kernel/core_pattern > 2: Coredump setting changed in host will

Re: [PATCH v4 3/3] Make core_pattern support namespace

On Tue, Oct 25, 2016 at 03:28:56PM +0800, Cao Shufeng wrote: > From: Zhao Lei > It will bring us following benefit: > 1: Each container can change their own coredump setting >based on operation on /proc/sys/kernel/core_pattern > 2: Coredump setting changed in host will not affect >running

[PATCH v2 perf/core] perf script: fix a use after free crash.

iterates past the node. Signed-off-by: Krister Johansen <k...@templeofstupid.com> --- tools/perf/util/callchain.c | 13 +++-- tools/perf/util/callchain.h | 6 ++ tools/perf/util/hist.c | 2 ++ 3 files changed, 19 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/callcha

[PATCH v2 perf/core] perf script: fix a use after free crash.

iterates past the node. Signed-off-by: Krister Johansen --- tools/perf/util/callchain.c | 13 +++-- tools/perf/util/callchain.h | 6 ++ tools/perf/util/hist.c | 2 ++ 3 files changed, 19 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/callchain.c b/tools/perf/util

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