Em Thu, Nov 26, 2020 at 06:00:08PM +0100, Jiri Olsa escreveu:
> Adding build_id__is_defined helper to check build id
> is defined and is != zero build id.
Thanks, applied.
- Arnaldo
> Signed-off-by: Jiri Olsa
> ---
> tools/perf/util/build-id.c | 6 ++
> tools/perf/util/build-id.h | 1 +
Em Thu, Nov 26, 2020 at 06:00:07PM +0100, Jiri Olsa escreveu:
> If PERF_RECORD_MISC_MMAP_BUILD_ID misc bit is set,
> mmap2 event carries build id, placed in following union:
>
> union {
> struct {
> u32 maj;
> u32 min;
>
Em Thu, Nov 26, 2020 at 06:00:06PM +0100, Jiri Olsa escreveu:
> We'll use it to check for undefined/zero data.
Thanks, applied.
- Arnaldo
> Signed-off-by: Jiri Olsa
> ---
> tools/include/linux/string.h | 1 +
> tools/lib/string.c | 58
> 2
Em Thu, Nov 26, 2020 at 06:00:26PM +0100, Jiri Olsa escreveu:
> Adding --buildid-mmap option to enable build id in mmap2 events. It
> will only work if there's kernel support for that and it disables
> build id cache (implies --no-buildid).
> It's also possible to enable it permanently via
Em Thu, Nov 26, 2020 at 09:21:25AM +0900, Masami Hiramatsu escreveu:
> Hi Arnaldo,
>
> On Wed, 25 Nov 2020 14:27:55 -0300
> Arnaldo Carvalho de Melo wrote:
>
> >
> > Masami, have you stumbled on this already?
> >
> > [root@seventh ~]# perf probe s
Em Thu, Nov 19, 2020 at 11:24:26PM +0800, Leo Yan escreveu:
> When outputs strings to the decoding buffer with function snprintf(),
> SPE decoder needs to detects if any error returns from snprintf() and if
> so needs to directly bail out. If snprintf() returns success, it needs
> to update
Em Wed, Nov 25, 2020 at 02:17:56PM +, Will Deacon escreveu:
> On Thu, Nov 19, 2020 at 11:24:25PM +0800, Leo Yan wrote:
> > This is patch set v9 for refactoring Arm SPE trace decoding and dumping.
> >
> > According to comments and suggestions from patch set v8, it squashs the
> > two patches
Masami, have you stumbled on this already?
[root@seventh ~]# perf probe security_locked_down%return 'ret=$retval'
Added new event:
probe:security_locked_down__return (on security_locked_down%return with
ret=$retval)
You can now use it in all perf tools, such as:
perf record -e
- Fix bug in distros such as OpenSUSE:15.2 where DW_AT_alignment isn't defined.
Signed-off-by: Arnaldo Carvalho de Melo
Em Wed, Nov 18, 2020 at 08:50:44PM -0800, Song Liu escreveu:
> This set introduces perf-stat -b option to count events for BPF programs.
> This is similar to bpftool-prog-profile. But perf-stat makes it much more
> flexible.
>
> Sending as RFC because I would like comments on some key design
Em Tue, Nov 17, 2020 at 09:53:59PM +0100, Jiri Olsa escreveu:
> On Tue, Nov 17, 2020 at 11:00:37AM -0800, Ian Rogers wrote:
> > On Tue, Nov 17, 2020 at 3:01 AM Jiri Olsa wrote:
> >
> > > Adding build_id__is_defined helper to check build id
> > > is defined and is != zero build id.
> > >
> > >
Em Tue, Nov 17, 2020 at 04:21:40PM +0100, Jiri Olsa escreveu:
> On Tue, Nov 17, 2020 at 09:50:40AM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Nov 17, 2020 at 12:00:52PM +0100, Jiri Olsa escreveu:
> > > Add buildid-list support for mmap2's build id data, so we can
>
Em Tue, Nov 17, 2020 at 04:16:51PM +0100, Jiri Olsa escreveu:
> On Tue, Nov 17, 2020 at 09:44:37AM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Nov 17, 2020 at 12:00:42PM +0100, Jiri Olsa escreveu:
> > > Allow mmap2 event to synthesize kernel image,
> > > so we can
f lock'.
Signed-off-by: Arnaldo Carvalho de Melo
Test results at the signed tag at:
https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/tag/?h=perf-tools-fixes-for-v5.10-2020-11-17
Al Grant (1):
perf inject: Fix
Em Tue, Nov 17, 2020 at 12:00:52PM +0100, Jiri Olsa escreveu:
> Add buildid-list support for mmap2's build id data, so we can
> display build ids for dso objects for data without the build
> id cache update.
> $ perf buildid-list
> 1805c738c8f3ec0f47b7ea09080c28f34d18a82b
Em Tue, Nov 17, 2020 at 12:00:50PM +0100, Jiri Olsa escreveu:
> Adding support to specify perf data file as -a option file
> argument,
>
> If the file is detected to be perf data file, it is processed
> and all dso objects with sample hit are stored to the build
> id cache.
>
> $
Em Tue, Nov 17, 2020 at 12:00:44PM +0100, Jiri Olsa escreveu:
> Adding build id to synthesized mmap2 events for
> everything - kernel/modules/tasks.
>
> Signed-off-by: Jiri Olsa
> ---
> tools/perf/util/synthetic-events.c | 32 ++
> 1 file changed, 32 insertions(+)
>
Em Tue, Nov 17, 2020 at 12:00:51PM +0100, Jiri Olsa escreveu:
> Adding --debuginfod option to specify debuginfod url and
> support to do that through config file as well.
>
> Use following in ~/.perfconfig file:
>
> [buildid-cache]
> debuginfod=http://192.168.122.174:8002
Ditto, its cool
Em Tue, Nov 17, 2020 at 12:00:42PM +0100, Jiri Olsa escreveu:
> Allow mmap2 event to synthesize kernel image,
> so we can synthesize kernel build id data in
> following changes.
>
> It's enabled by new symbol_conf.buildid_mmap2
> bool, which will be switched in following
> changes.
Why make this
Em Tue, Nov 17, 2020 at 12:00:43PM +0100, Jiri Olsa escreveu:
> Allow mmap2 event to synthesize kernel modules,
> so we can synthesize module's build id data in
> following changes.
>
> It's enabled by new symbol_conf.buildid_mmap2
> bool, which will be switched in following
> changes.
Ditto as
Em Tue, Nov 17, 2020 at 12:00:41PM +0100, Jiri Olsa escreveu:
> When processing mmap2 event, check on the build id
> misc bit: PERF_RECORD_MISC_BUILD_ID and if it's set,
> store the build id in mmap's dso object.
>
> Also adding the build id data arts to struct
> perf_record_mmap2 event
Em Tue, Nov 17, 2020 at 12:00:37PM +0100, Jiri Olsa escreveu:
> Adding support to decompress file before reading build id.
>
> Adding filename__read_build_id and change its current
> versions to read_build_id.
>
> Shutting down stderr output of perf list in the shell test:
> 82: Check open
Em Mon, Nov 16, 2020 at 11:12:30AM -0800, Ian Rogers escreveu:
> On Mon, Nov 16, 2020 at 9:05 AM Arnaldo Carvalho de Melo
> wrote:
>
> > Em Fri, Nov 06, 2020 at 01:21:58PM +0900, Namhyung Kim escreveu:
> > > On Fri, Nov 6, 2020 at 12:12 PM Jin, Yao
> > wrote:
>
Em Fri, Nov 13, 2020 at 10:20:53AM -0800, Ian Rogers escreveu:
> This fix is for a failure that occurred in the DWARF unwind perf test.
> Stack unwinders may probe memory when looking for frames. Memory
> sanitizer will poison and track uninitialized memory on the stack, and
> on the heap if the
Em Fri, Nov 13, 2020 at 10:38:28AM -0800, Ian Rogers escreveu:
> On Fri, Sep 4, 2020 at 9:29 AM Arnaldo Carvalho de Melo
> wrote:
>
> > Em Thu, Sep 03, 2020 at 10:53:16PM -0700, Ian Rogers escreveu:
> > > On Thu, Aug 27, 2020 at 12:00 AM kajoljain wrote:
> > >
Em Fri, Nov 06, 2020 at 01:21:58PM +0900, Namhyung Kim escreveu:
> On Fri, Nov 6, 2020 at 12:12 PM Jin, Yao wrote:
> > >> Signed-off-by: Jin Yao
> > >
> > > It seems not applied to acme/perf/core cleanly.
> > >
> > > Thanks,
> > > Namhyung
> > >
> >
> > It seems the patch mail is truncated. :(
>
Em Tue, Nov 03, 2020 at 04:56:09PM -0800, Fangrui Song escreveu:
> In memset_64.S, the macros expand to `.weak MEMSET ... .globl MEMSET`
> which will produce a STB_WEAK MEMSET with GNU as but STB_GLOBAL MEMSET
> with LLVM's integrated assembler before LLVM 12. LLVM 12 (since
>
Em Sat, Nov 14, 2020 at 09:55:34PM +0100, Jiri Olsa escreveu:
> On Fri, Oct 30, 2020 at 02:47:42PM +0900, Namhyung Kim wrote:
> > When perf data is in a pipe, it reads each event separately using
> > read(2) syscall. This is a huge performance bottleneck when
> > processing large data like in
Em Thu, Nov 12, 2020 at 12:57:10PM +0100, Jiri Olsa escreveu:
> On Wed, Nov 11, 2020 at 09:00:46AM -0800, Andi Kleen wrote:
> > On Mon, Nov 09, 2020 at 10:54:15PM +0100, Jiri Olsa wrote:
> > > Adding --buildid-mmap option to enable build id in mmap2 events.
> > > It will only work if there's
Em Wed, Nov 11, 2020 at 03:02:48PM -0300, Arnaldo Carvalho de Melo escreveu:
> > I'll keep the series up to that point and will run my build tests, then
> > push it publicly to acme/perf/core and you can go from there, ok?
> > I've changed the BIT() to BIT_ULL() as Andre suggest
Em Wed, Nov 11, 2020 at 03:01:27PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Nov 11, 2020 at 05:58:27PM +, Dave Martin escreveu:
> >
> > On Wed, Nov 11, 2020 at 05:39:22PM +, Arnaldo Carvalho de Melo wrote:
> > > Em Wed, Nov 11, 2020 at 03:45:23PM
Em Wed, Nov 11, 2020 at 05:58:27PM +, Dave Martin escreveu:
>
> On Wed, Nov 11, 2020 at 05:39:22PM +, Arnaldo Carvalho de Melo wrote:
> > Em Wed, Nov 11, 2020 at 03:45:23PM +, Andr� Przywara escreveu:
> > > On 11/11/2020 15:35, Arnaldo Carvalho de Melo wrote:
&g
Em Wed, Nov 11, 2020 at 04:20:26PM +, André Przywara escreveu:
> On 11/11/2020 16:15, Arnaldo Carvalho de Melo wrote:
> > Em Wed, Nov 11, 2020 at 01:10:51PM -0300, Arnaldo Carvalho de Melo escreveu:
> >> Em Wed, Nov 11, 2020 at 03:11:27PM +0800, Leo Yan escreveu:
> >
Em Wed, Nov 11, 2020 at 03:58:27PM +, Dave Martin escreveu:
> On Wed, Nov 11, 2020 at 03:53:20PM +, Dave Martin wrote:
> > On Wed, Nov 11, 2020 at 07:11:33AM +, Leo Yan wrote:
> > > When outputs strings to the decoding buffer with function snprintf(),
> > > SPE decoder needs to detects
Em Wed, Nov 11, 2020 at 03:45:23PM +, André Przywara escreveu:
> On 11/11/2020 15:35, Arnaldo Carvalho de Melo wrote:
>
> Hi Arnaldo,
>
> thanks for taking a look!
>
> > Em Wed, Nov 11, 2020 at 03:11:33PM +0800, Leo Yan escreveu:
> >> When outpu
Em Wed, Nov 11, 2020 at 01:10:51PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Nov 11, 2020 at 03:11:27PM +0800, Leo Yan escreveu:
> > This is patch set v8 for refactoring Arm SPE trace decoding and dumping.
> >
> > This version addresses Andre's comment to
Em Wed, Nov 11, 2020 at 03:11:27PM +0800, Leo Yan escreveu:
> This is patch set v8 for refactoring Arm SPE trace decoding and dumping.
>
> This version addresses Andre's comment to pass parameter '_len' at
> the last call arm_spe_pkt_snprintf() in the function arm_spe_pkt_desc().
>
> This patch
Em Wed, Nov 11, 2020 at 03:11:33PM +0800, Leo Yan escreveu:
> When outputs strings to the decoding buffer with function snprintf(),
> SPE decoder needs to detects if any error returns from snprintf() and if
> so needs to directly bail out. If snprintf() returns success, it needs
> to update
Em Wed, Nov 11, 2020 at 10:13:52AM +, André Przywara escreveu:
> On 11/11/2020 07:11, Leo Yan wrote:
>
> Hi Arnaldo, Ingo, Peter, (whoever feels responsible for taking this)
>
> > This is patch set v8 for refactoring Arm SPE trace decoding and dumping.
> I have reviewed every patch of this
Em Tue, Nov 10, 2020 at 07:23:34PM +0100, Jiri Olsa escreveu:
> On Tue, Nov 10, 2020 at 11:10:46AM +0100, Jiri Olsa wrote:
> > On Tue, Nov 10, 2020 at 09:28:51AM +0100, Peter Zijlstra wrote:
> > > On Mon, Nov 09, 2020 at 10:53:54PM +0100, Jiri Olsa wrote:
> > > > There's new misc bit for mmap2 to
Em Tue, Nov 10, 2020 at 11:08:29AM -0700, Mathieu Poirier escreveu:
> On Tue, Nov 10, 2020 at 02:34:17PM +0800, Leo Yan wrote:
> > Since the commit 943b69ac1884 ("perf parse-events: Set exclude_guest=1
> > for user-space counting"), 'exclude_guest=1' is set for user-space
> > counting; and the
Em Tue, Nov 10, 2020 at 01:22:32PM +0100, Peter Zijlstra escreveu:
> On Tue, Nov 10, 2020 at 08:54:26AM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Nov 10, 2020 at 09:07:16AM +0100, Peter Zijlstra escreveu:
> > > On Mon, Nov 09, 2020 at 10:53:54PM +0100, Jiri Olsa wro
Em Tue, Nov 10, 2020 at 09:07:16AM +0100, Peter Zijlstra escreveu:
> On Mon, Nov 09, 2020 at 10:53:54PM +0100, Jiri Olsa wrote:
> > Adding support to carry build id data in mmap2 event.
> >
> > The build id data replaces maj/min/ino/ino_generation
> > fields, whichc are also used to identify
Em Mon, Nov 09, 2020 at 11:32:13AM +0100, Jiri Olsa escreveu:
> On Mon, Nov 09, 2020 at 05:57:37PM +0800, Ming Lei wrote:
> > On Thu, Nov 5, 2020 at 12:58 PM Amy Parker wrote:
> > >
> > > On all attempts to build the 5.10 tree (from either release candidate,
> > > Linus's tree, Greg's tree, etc),
Em Wed, Nov 04, 2020 at 05:42:28PM +0800, Leo Yan escreveu:
> The tracepoint "lock:lock_acquire" contains field "flags" but not
> "flag". Current code wrongly retrieves value from field "flag" and it
> always gets zero for the value, thus "perf lock" doesn't report the
> correct result.
>
> This
-by: Arnaldo Carvalho de Melo
Test results in the signed tag at:
https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/tag/?h=perf-tools-for-v5.10-2020-11-03
Arnaldo Carvalho de Melo (14):
perf tools: Update copy
Em Mon, Nov 02, 2020 at 06:49:56PM +0100, Jiri Olsa escreveu:
> On Mon, Nov 02, 2020 at 11:02:28PM +0900, Namhyung Kim wrote:
> > It was missed to add a swap function for PERF_RECORD_CGROUP.
> >
> > Fixes: ba78c1c5461c ("perf tools: Basic support for CGROUP event")
>
> Acked-by: Jiri Olsa
Em Mon, Nov 02, 2020 at 10:50:00PM +0900, Namhyung Kim escreveu:
> Hi Jiri,
>
> On Mon, Nov 2, 2020 at 8:31 AM Jiri Olsa wrote:
> >
> > We display garbage for undefined build_id objects,
> > because we don't initialize the output buffer.
> >
> > Signed-off-by: Jiri Olsa
>
> Acked-by: Namhyung
tes.
> >
> > Fix this by increasing the size of buf[] to 128.
> >
> > Fixes: dbddf1747441 ("perf report/top TUI: Support hotkeys to let user
> > select any event for sorting")
> > Cc: stable # v5.7+
> > Cc: Jin Yao
> > Cc: Jiri Olsa
> > Cc: Arnaldo Carvalho de Melo
> > Cc: Arnaldo Carvalho de Melo
> > Signed-off-by: Song Liu
>
> Acked-by: Jiri Olsa
Thanks, applied.
- Arnaldo
__no_tail_call attribute.
- Add kvm-stat for arm64.
- Fix segfault when trying to trace events by cgroup.
- Fix crash with non-jited BPF progs
Signed-off-by: Arnaldo Carvalho de Melo
Test results on the signed tag at:
https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/tag/?h=perf-tools
Em Tue, Oct 27, 2020 at 02:44:21PM +0100, Jiri Olsa escreveu:
> On Tue, Oct 27, 2020 at 04:28:55PM +0900, Namhyung Kim wrote:
> > To make the command line even more compact with cgroups, support regex
> > pattern matching in cgroup names.
> >
> > $ perf stat -a -e cpu-clock,cycles
Em Mon, Oct 26, 2020 at 05:27:36PM -0700, Andi Kleen escreveu:
> Add a new --quiet option to perf stat. This is useful with perf stat
> record to write the data only to the perf.data file, which can lower
> measurement overhead because the data doesn't need to be formatted.
>
> On my 4C desktop:
Em Thu, Oct 22, 2020 at 07:02:25PM +0800, John Garry escreveu:
> The small series covers the following:
> - Tidy error handling in jevents a bit
> - Expands on PMU events test to cover jevents arch std events support
>
> Differences to v1:
> - Revert to original logic in jevents.c error path
Em Thu, Oct 22, 2020 at 06:02:31PM -0700, Ian Rogers escreveu:
> On Thu, Oct 22, 2020 at 5:54 PM Jin Yao wrote:
> >
> > Ian reports an issue that the metric DRAM_BW_Use often remains 0.
> >
> > The metric expression for DRAM_BW_Use on CLX/SKX:
> >
> > "( 64 * ( uncore_imc@cas_count_read@ +
Em Thu, Oct 22, 2020 at 07:09:12PM -0700, Ian Rogers escreveu:
> On Thu, Oct 22, 2020 at 7:06 PM Namhyung Kim wrote:
> >
> > Current script to generate mmap flags and prot checks headers from the
> > uapi/asm-generic directory but it might come from a different
> > directory in some environment.
Em Tue, Oct 27, 2020 at 03:24:21PM +0900, Sergey Senozhatsky escreveu:
> Add support for perf kvm stat on arm64 platform.
>
> Example:
> # perf kvm stat report
>
> Analyze events for all VMs, all VCPUs:
>
> VM-EXITSamples Samples% Time%Min TimeMax Time
> Avg time
Em Mon, Oct 26, 2020 at 09:32:34PM +0900, Namhyung Kim escreveu:
> Hi Jiri,
>
> On Mon, Oct 26, 2020 at 8:40 PM Jiri Olsa wrote:
> >
> > On Sat, Oct 24, 2020 at 11:59:18AM +0900, Namhyung Kim wrote:
> > > To make the command line even more compact with cgroups, support regex
> > > pattern
Em Wed, Oct 21, 2020 at 08:53:16AM -0700, Andrii Nakryiko escreveu:
> On Wed, Oct 21, 2020 at 6:48 AM Arnaldo Carvalho de Melo
> wrote:
> >
> > Em Wed, Oct 21, 2020 at 08:22:40AM +0200, Jiri Slaby escreveu:
> > > On 20. 10. 20, 14:20, Arnaldo Carvalho de Melo wrote
Em Wed, Oct 21, 2020 at 08:22:40AM +0200, Jiri Slaby escreveu:
> On 20. 10. 20, 14:20, Arnaldo Carvalho de Melo wrote:
> > > Yeah, I observe the very same. I reported it at:
> > > https://bugzilla.suse.com/show_bug.cgi?id=1177921
> > Would it be possible to try with
>
Em Tue, Oct 20, 2020 at 03:14:59PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Tue, Oct 20, 2020 at 10:10:19AM -0700, Andrii Nakryiko escreveu:
> > On Tue, Oct 20, 2020 at 10:05 AM Hao Luo wrote:
> > > Thanks for reporting this and cc'ing me. I forgot to update the error
&
Em Tue, Oct 20, 2020 at 10:10:19AM -0700, Andrii Nakryiko escreveu:
> On Tue, Oct 20, 2020 at 10:05 AM Hao Luo wrote:
> > Thanks for reporting this and cc'ing me. I forgot to update the error
> > messages when renaming the flags. I will send a patch to fix the error
> > message.
> > The commit
Em Tue, Oct 20, 2020 at 11:01:39AM +0200, Jiri Slaby escreveu:
> Hi,
>
> On 19. 10. 20, 1:18, Érico Rolim wrote:
> > I'm trying to build kernel 5.9.1 for arm64, and my dotconfig has
> > `CONFIG_DEBUG_INFO_BTF=y`, which requires pahole for building. However,
> > pahole
> > version 1.18 segfaults
Em Tue, Oct 20, 2020 at 03:07:15PM +0900, Namhyung Kim escreveu:
> Hello,
> On Fri, Oct 16, 2020 at 10:17 PM Tommi Rantala
> wrote:
> >
> > Currently reason for skipping the read only watchpoint test is only seen
> > when running in verbose mode:
> >
> > $ perf test watchpoint
> > 23:
Em Mon, Oct 19, 2020 at 10:53:43PM +0200, Jiri Olsa escreveu:
> On Fri, Oct 16, 2020 at 02:47:18PM +0300, Tommi Rantala wrote:
> > The addr in PERF_RECORD_KSYMBOL events for non-jited bpf progs points to
> > the bpf interpreter, ie. within kernel text section. When processing the
> > unregister
Em Tue, Oct 20, 2020 at 08:11:59AM +0200, Jiri Olsa escreveu:
> On Mon, Oct 19, 2020 at 06:02:34PM +0800, Leo Yan wrote:
> > This patch set is to move tsc testing from x86 specific to common
> > testing case. Since Arnaldo found the building failure for patch set
> > v4 [1], the first four
Em Tue, Oct 20, 2020 at 08:06:27AM +0200, Jiri Olsa escreveu:
> On Mon, Oct 19, 2020 at 08:36:13AM +0800, Leo Yan wrote:
> > Some archs (e.g. x86 and Arm64) don't enable the configuration
> > CONFIG_MEMORY_HOTPLUG by default, if this configuration is not enabled
> > when build the kernel image,
Em Mon, Oct 19, 2020 at 04:25:45PM -0700, Ian Rogers escreveu:
> If perf is built with libpfm4 (LIBPFM4=1) then advertise it in perf -vv.
Thanks, applied.
- Arnaldo
> Signed-off-by: Ian Rogers
> ---
> tools/perf/builtin-version.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git
Em Mon, Oct 19, 2020 at 08:15:14PM +0300, Alexey Budankov escreveu:
>
> Assignment of CAP_PERFMON [1] Linux capability to an executable located
> on a file system requires extended attributes (xattrs) [2] to be supported
> by the file system. Even if the file system supports xattrs an fs device
>
8 PMU vendor events JSON files.
- Hide libtraceevent non API functions.
Signed-off-by: Arnaldo Carvalho de Melo
Test results in the signed tag.
Adrian Hunter (9):
perf tools: Consolidate --control option parsing into one function
perf tools: Handle read errors from ctl_fd
perf tools
Em Thu, Oct 15, 2020 at 05:09:17PM +0200, Jiri Olsa escreveu:
> ah when puting it on top of perf/core I found it's already fixed there:
> a55b7bb1c146 (tag: perf-tools-tests-v5.10-2020-09-28) perf test: Fix msan
> uninitialized use.
> so we should be fine
For 5.10, yes, but probably we need
Em Thu, Oct 15, 2020 at 03:50:33PM +0100, Leo Yan escreveu:
> If the memory event doesn't contain HITM tag (like Arm SPE), it cannot
> rely on HITM display to report cache false sharing. Alternatively, we
> can use the LLC access and multi-threads info to locate the potential
> false sharing's
Em Wed, Oct 14, 2020 at 06:46:12PM +0100, John Garry escreveu:
> On 14/10/2020 17:49, Arnaldo Carvalho de Melo wrote:
> > Ok, applied,
>
> Thanks
>
> > please consider adding a Fixes tag next time.
> >
>
> Can do if it helps, but I only thought it approp
Em Wed, Oct 14, 2020 at 06:14:18PM +0200, Jiri Olsa escreveu:
> On Wed, Oct 14, 2020 at 08:39:51AM -0700, Ian Rogers wrote:
> > The pthread_mutex_lock avoids any race on g->nr_tasks_started and
> > g->p.nr_tasks is set up in init() along with all the global state. I
> > don't think there's any
Em Mon, Oct 12, 2020 at 01:24:19PM +0200, Jiri Olsa escreveu:
> On Mon, Oct 12, 2020 at 12:15:04PM +0100, John Garry wrote:
> > On 12/10/2020 11:54, Jiri Olsa wrote:
> > > > ff --git a/tools/perf/pmu-events/jevents.c
> > > > b/tools/perf/pmu-events/jevents.c
> > > > index
Em Tue, Oct 13, 2020 at 08:53:46PM -0700, Andi Kleen escreveu:
> Document the higher level --insn-trace etc. perf script options.
>
> Include the howto how to build xed into the manpage
Thanks, applied.
> Cc: adrian.hun...@intel.com
> Signed-off-by: Andi Kleen
> ---
>
Em Wed, Oct 14, 2020 at 03:21:46PM +0200, Jiri Olsa escreveu:
> On Wed, Oct 14, 2020 at 08:59:08AM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Oct 13, 2020 at 09:24:39PM +0200, Jiri Olsa escreveu:
> > > We do not store size with build ids in perf data,
> > > but
Em Wed, Oct 14, 2020 at 07:42:55AM -0700, Andi Kleen escreveu:
> Peter suggested that using the exclusive mode in perf could
> avoid some problems with bad scheduling of groups. Exclusive
> is implemented in the kernel, but wasn't exposed by the perf tool,
> so hard to use without custom low level
Em Wed, Oct 14, 2020 at 11:05:17AM -0400, j...@joelfernandes.org escreveu:
> On Tue, Oct 13, 2020 at 09:37:48AM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Sat, Sep 26, 2020 at 11:45:39AM -0400, Joel Fernandes escreveu:
> > > On Sat, Sep 26, 2020 at 10:10 AM N
Em Tue, Oct 13, 2020 at 09:24:39PM +0200, Jiri Olsa escreveu:
> We do not store size with build ids in perf data,
> but there's enough space to do it. Adding misc bit
> PERF_RECORD_MISC_BUILD_ID_SIZE to mark build id event
> with size.
>
> With this fix the dso with md5 build id will have correct
Em Tue, Oct 13, 2020 at 09:24:39PM +0200, Jiri Olsa escreveu:
> We do not store size with build ids in perf data,
> but there's enough space to do it. Adding misc bit
> PERF_RECORD_MISC_BUILD_ID_SIZE to mark build id event
> with size.
>
> With this fix the dso with md5 build id will have correct
Em Tue, Oct 13, 2020 at 09:24:37PM +0200, Jiri Olsa escreveu:
> Passing build_id object to dso__set_build_id, so it's easier
> to initialize dos's build id object.
>
> Acked-by: Ian Rogers
> Signed-off-by: Jiri Olsa
> ---
> tools/perf/util/dso.c| 4 ++--
> tools/perf/util/dso.h
Em Mon, Oct 12, 2020 at 08:59:36AM +1100, Stephen Rothwell escreveu:
> Hi all,
>
> On Fri, 9 Oct 2020 14:41:11 +0200 Jiri Olsa wrote:
> >
> > On Fri, Oct 09, 2020 at 02:25:23PM +0200, Vasily Gorbik wrote:
> > > Currently BUILD_BUG() macro is expanded to smth like the following:
> > >do {
> >
Em Fri, Oct 09, 2020 at 02:41:11PM +0200, Jiri Olsa escreveu:
> On Fri, Oct 09, 2020 at 02:25:23PM +0200, Vasily Gorbik wrote:
> > Currently BUILD_BUG() macro is expanded to smth like the following:
> >do {
> >extern void __compiletime_assert_0(void)
> >
Em Mon, Oct 12, 2020 at 07:52:33PM +0300, Alexey Budankov escreveu:
>
> On 12.10.2020 19:03, Andi Kleen wrote:
> > On Mon, Oct 12, 2020 at 11:55:07AM +0300, Alexey Budankov wrote:
> >>
> >> Open files located at data directory in case of read access mode.
> >
> > Need some rationale. Is this a
Em Mon, Oct 12, 2020 at 11:50:29AM +0300, Alexey Budankov escreveu:
>
> Patch set provides threaded trace streaming for base perf record
> operation. Provided streaming mode (--threads) mitigates profiling
> data losses and resolves scalability issues of serial and asynchronous
> (--aio) trace
Em Mon, Oct 12, 2020 at 08:25:42AM -0700, Ian Rogers escreveu:
> On Mon, Oct 12, 2020 at 2:13 AM Jiri Olsa wrote:
> >
> > On Sun, Oct 11, 2020 at 08:10:22PM +0800, Leo Yan wrote:
> > > Since commit b027cc6fdf1b ("perf c2c: Fix 'perf c2c record -e list' to
> > > show the default events used"),
Em Wed, Sep 30, 2020 at 07:15:04PM +0200, Jiri Olsa escreveu:
> Adding test for build id cache that adds binary
> with sha1 and md5 build ids and verifies it's
> added properly.
>
> The test updates build id cache with perf record
> and perf buildid-cache -a.
[root@five ~]# perf test "build id"
Em Tue, Sep 29, 2020 at 02:39:03PM +0100, Leo Yan escreveu:
> The prominent issue for the SPE trace decoding and dumping is the packet
> header and payload values are hard coded with numbers and it's not
> readable and difficult to maintain; and has other minor issues, e.g. the
> packet length
Em Tue, Oct 13, 2020 at 11:51:03AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Sun, Sep 27, 2020 at 11:19:18AM +0800, Leo Yan escreveu:
> > On Tue, Sep 22, 2020 at 11:12:24AM +0100, Andre Przywara wrote:
> > > When SPE records a physical address, it can addition
my perf/core branch?
- Arnaldo
[acme@five perf]$ b4 am -csl 20200929033450.GB529@jagdpanzerIV.localdomain
Looking up
https://lore.kernel.org/r/20200929033450.GB529%40jagdpanzerIV.localdomain
Grabbing thread from lore.kernel.org/linux-arm-kernel
Analyzing 2 messages in the thread
---
Writing
Em Sat, Sep 26, 2020 at 11:45:39AM -0400, Joel Fernandes escreveu:
> On Sat, Sep 26, 2020 at 10:10 AM Namhyung Kim wrote:
> [...]
> > On Sat, Sep 26, 2020 at 8:56 AM Joel Fernandes (Google)
> > wrote:
> > >
> > > perf sched latency is really useful at showing worst-case latencies that
> > >
Em Sat, Sep 26, 2020 at 11:10:46PM +0900, Namhyung Kim escreveu:
> Hi Joel,
>
> On Sat, Sep 26, 2020 at 8:56 AM Joel Fernandes (Google)
> wrote:
> >
> > perf sched latency is really useful at showing worst-case latencies that
> > task
> > encountered since wakeup. However it shows only the end
Em Mon, Oct 12, 2020 at 01:21:26PM +0530, kajoljain escreveu:
>
>
> On 10/12/20 10:32 AM, Sandipan Das wrote:
> > This replaces the incorrectly spelled word "localtion"
> > with "location" in some power8 PMU event descriptions.
>
> Patch looks good to me, Thanks for correcting it.
>
>
Em Mon, Oct 12, 2020 at 04:02:08PM +0900, Namhyung Kim escreveu:
> Hello,
>
> This is the new version of speed up build-id injection. As this is
> to improve performance, I've added a benchmark for it. Please look at
> the usage in the first commit.
>
> By default, it measures average
Em Wed, Oct 07, 2020 at 01:42:19PM +0200, Jiri Olsa escreveu:
> On Wed, Oct 07, 2020 at 05:13:11PM +0900, Namhyung Kim wrote:
> > It was reported that perf stat crashed when using with armv8_pmu (cpu)
> > events with the task mode. As perf stat uses an empty cpu map for
> > task mode but
ressed files, the
later being just flatly refused, that got left for v1.19.
- Bail out on partial units for now, avoiding segfaults and providing warning
to user, hopefully will be addressed in v1.19.
Signed-off-by: Arnaldo Carvalho de Melo
Em Fri, Oct 02, 2020 at 10:34:51AM -0700, Ian Rogers escreveu:
> On Fri, Oct 2, 2020 at 6:07 AM Namhyung Kim wrote:
> >
> > Hi Jiri,
> >
> > On Fri, Oct 2, 2020 at 4:05 AM Jiri Olsa wrote:
> > >
> > > Adding test for build id cache that adds binary
> > > with sha1 and md5 build ids and verifies
Em Mon, Sep 28, 2020 at 10:11:35PM +0200, Jiri Olsa escreveu:
> Hagen reported broken strings in python3 tracepoint scripts:
>
> make PYTHON=python3
> ./perf record -e sched:sched_switch -a -- sleep 5
> ./perf script --gen-script py
> ./perf script -s ./perf-script.py
>
> [..]
>
Em Wed, Sep 30, 2020 at 12:50:27PM -0400, Steven Rostedt escreveu:
> On Wed, 30 Sep 2020 14:07:33 +0300
> "Tzvetomir Stoyanov (VMware)" wrote:
>
> > There are internal library functions, which are not declared as a static.
> > They are used inside the library from different files. Hide them from
Em Mon, Sep 28, 2020 at 03:39:42PM +0200, Jiri Olsa escreveu:
> On Mon, Sep 28, 2020 at 12:43:11PM +0200, Hagen Paul Pfeifer wrote:
> > * Jiri Olsa | 2020-09-28 12:08:08 [+0200]:
> >
> > >patch below fixes it for me, but seems strange this was
> > >working till now.. maybe you're the only one
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