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Namhyung Kim 227ad32385 perf annotate: Support event group display
When events are grouped together, it'd be natural to show them at once
like in other mode.  Handle group leaders with members to collect the
number of samples together and display like below:

  $ perf annotate --data-type --group
  ...
  Annotate type: 'struct page' in vmlinux (1 samples):
   event[0] = cpu/mem-loads,ldlat=30/P
   event[1] = cpu/mem-stores/P
   event[2] = dummy:u
  ============================================================================
                            samples     offset       size  field
            1          0          0          0         64  struct page     {
            0          0          0          0          8      long unsigned int  flags;
            0          0          0          8         40      union       {
            0          0          0          8         40          struct          {
            0          0          0          8         16              union       {
            0          0          0          8         16                  struct list_head       lru {
            0          0          0          8          8                      struct list_head*  next;
            0          0          0         16          8                      struct list_head*  prev;
                                                                           };
            0          0          0          8         16                  struct          {
            0          0          0          8          8                      void*      __filler;
            0          0          0         16          4                      unsigned int       mlock_count;
                                                                           };
            0          0          0          8         16                  struct list_head       buddy_list {
            0          0          0          8          8                      struct list_head*  next;
            0          0          0         16          8                      struct list_head*  prev;
                                                                           };

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: linux-toolchains@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Link: https://lore.kernel.org/r/20231213001323.718046-16-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-12-23 22:39:43 -03:00
arch powerpc fixes for 6.7 #5 2023-12-17 08:50:00 -08:00
block block-6.7-2023-12-01 2023-12-02 06:39:30 +09:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto This push fixes a regression in ahash and hides the Kconfig sub-options for the jitter RNG. 2023-11-09 17:04:58 -08:00
Documentation drm fixes for 6.7-rc6 2023-12-15 11:07:13 -08:00
drivers SCSI fixes on 20231218 2023-12-18 11:11:09 -08:00
fs for-6.7-rc5-tag 2023-12-17 09:27:36 -08:00
include pci-v6.7-fixes-1 2023-12-15 19:48:47 -08:00
init As usual, lots of singleton and doubleton patches all over the tree and 2023-11-02 20:53:31 -10:00
io_uring io_uring/cmd: fix breakage in SOCKET_URING_OP_SIOC* implementation 2023-12-14 16:52:13 -07:00
ipc Many singleton patches against the MM code. The patch series which are 2023-11-02 19:38:47 -10:00
kernel - Avoid iterating over newly created group leader event's siblings 2023-12-17 14:03:11 -08:00
lib cred: get rid of CONFIG_DEBUG_CREDENTIALS 2023-12-15 14:19:48 -08:00
LICENSES
mm mm/mglru: reclaim offlined memcgs harder 2023-12-12 17:20:20 -08:00
net cred: get rid of CONFIG_DEBUG_CREDENTIALS 2023-12-15 14:19:48 -08:00
rust Kbuild updates for v6.7 2023-11-04 08:07:19 -10:00
samples Landlock updates for v6.7-rc1 2023-11-03 09:28:53 -10:00
scripts sign-file: Fix incorrect return values check 2023-12-13 12:55:11 -08:00
security cred: get rid of CONFIG_DEBUG_CREDENTIALS 2023-12-15 14:19:48 -08:00
sound ALSA: hda/tas2781: reset the amp before component_add 2023-12-14 12:04:38 +01:00
tools perf annotate: Support event group display 2023-12-23 22:39:43 -03:00
usr arch: Remove Itanium (IA-64) architecture 2023-09-11 08:13:17 +00:00
virt Revert "KVM: Prevent module exit until all VMs are freed" 2023-12-01 08:12:30 -08:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: rpm-pkg: generate kernel.spec in rpmbuild/SPECS/ 2023-10-03 20:49:09 +09:00
.mailmap hid-for-linus-2023121201 2023-12-12 17:02:56 -08:00
.rustfmt.toml
COPYING
CREDITS MAINTAINERS: drop Antti Palosaari 2023-12-06 16:12:49 -08:00
Kbuild
Kconfig
MAINTAINERS powerpc fixes for 6.7 #5 2023-12-17 08:50:00 -08:00
Makefile Linux 6.7-rc6 2023-12-17 15:19:28 -08:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.