10668 Commits

Author SHA1 Message Date
Matthew Wilcox
0a835c4f09 Reimplement IDR and IDA using the radix tree
The IDR is very similar to the radix tree.  It has some functionality that
the radix tree did not have (alloc next free, cyclic allocation, a
callback-based for_each, destroy tree), which is readily implementable on
top of the radix tree.  A few small changes were needed in order to use a
tag to represent nodes with free space below them.  More extensive
changes were needed to support storing NULL as a valid entry in an IDR.
Plain radix trees still interpret NULL as a not-present entry.

The IDA is reimplemented as a client of the newly enhanced radix tree.  As
in the current implementation, it uses a bitmap at the last level of the
tree.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2017-02-13 21:44:01 -05:00
Matthew Wilcox
bfa11193c4 radix tree test suite: Remove obsolete CONFIG
radix-tree.c doesn't use these CONFIG options any more.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 16:09:43 -05:00
Matthew Wilcox
991af734c4 radix tree test suite: Use vpath to find lib files
Instead of specifying how to build find_bit.o from lib/find_bit.o,
use vpath to tell make where to find find_bit.c.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 16:09:42 -05:00
Matthew Wilcox
ab3a1ffd11 radix tree test suite: Reduce kernel.h
Many of the definitions in the radix-tree kernel.h are redundant with
others in tools/include, or are no longer used, such as panic().
Move the definition of __init to init.h and in_interrupt() to preempt.h

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 16:09:42 -05:00
Matthew Wilcox
7a4f11b889 radix tree test suite: Remove export.h
The tools/include export.h contains everything we need.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 16:09:41 -05:00
Matthew Wilcox
12ea65390b radix tree test suite: Remove types.h
Move the pieces we still need to tools/include and update a few implicit
includes.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
2017-02-13 16:09:41 -05:00
Matthew Wilcox
a3c7890790 radix tree test suite: Remove mempool
The radix tree hasn't used a mempool since the beginning of git history.
Remove the userspace mempool implementation.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 16:09:36 -05:00
Matthew Wilcox
43a30c2a31 radix tree test suite: Depend on tools/include/asm files
Changing tools/include/asm/bug.h showed a missing dependency in the
Makefile.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
2017-02-13 16:08:47 -05:00
Arnaldo Carvalho de Melo
5eae7d8425 perf symbols: dso->name is an array, no need to check it against NULL
As it will always evaluate to 'true', as reported by clang:

  util/map.c:390:36: error: address of array 'map->dso->name' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
          if (map && map->dso && (map->dso->name || map->dso->long_name)) {
                                  ~~~~~~~~~~^~~~ ~~
  util/map.c:393:22: error: address of array 'map->dso->name' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
                  else if (map->dso->name)
                     ~~  ~~~~~~~~~~^~~~

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-x8cu007cly40kfp8xnpi9kya@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 17:22:35 -03:00
Arnaldo Carvalho de Melo
9ef6839bcc perf tests record: No need to test an array against NULL
It will always evaluate to 'true', as clang warns:

    CC       /tmp/build/perf/tests/perf-record.o
    CC       /tmp/build/perf/tests/evsel-roundtrip-name.o
  tests/perf-record.c:69:24: error: comparison of array 'argv' equal to a null pointer is always false [-Werror,-Wtautological-pointer-compare]
          if (evlist == NULL || argv == NULL) {
                                ^~~~    ~~~~
  1 error generated.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-o4977g6p9b3peak9ct6ef48q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 17:22:34 -03:00
Arnaldo Carvalho de Melo
a7c3899c06 perf symbols: No need to check if sym->name is NULL
As it is an array, so will always evaluate to 'true', as reported by
clang:

  builtin-sched.c:2070:19: error: address of array 'sym->name' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
                  if (sym && sym->name) {
                          ~~ ~~~~~^~~~
  1 warning generated.

So just ditch all those useless checks.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ydpm927col06paixb775jjx5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 17:22:34 -03:00
Arnaldo Carvalho de Melo
d6195a6a2c perf evsel: Inform how to make a sysctl setting permanent
When a tool can't open counters due to the kernel.perf_event_paranoit
sysctl setting, we inform how to tweak it to allow the operation to
succeed, in addition to that, suggest setting /etc/sysctl.conf to
make the setting permanent.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-4gwe99k4a6p12d4u8bbyttj2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 17:22:33 -03:00
Arnaldo Carvalho de Melo
e8c6f437fd tools lib traceevent plugin function: Initialize 'index' variable
Detected with clang:

    CC       /tmp/build/perf/plugin_function.o
  plugin_function.c:145:6: warning: variable 'index' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
          if (parent && ftrace_indent->set)
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
  plugin_function.c:148:29: note: uninitialized use occurs here
          trace_seq_printf(s, "%*s", index*3, "");
                                     ^~~~~
  plugin_function.c:145:2: note: remove the 'if' if its condition is always true
          if (parent && ftrace_indent->set)
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  plugin_function.c:145:6: warning: variable 'index' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
          if (parent && ftrace_indent->set)
              ^~~~~~
  plugin_function.c:148:29: note: uninitialized use occurs here
          trace_seq_printf(s, "%*s", index*3, "");
                                     ^~~~~
  plugin_function.c:145:6: note: remove the '&&' if its condition is always true
          if (parent && ftrace_indent->set)
              ^~~~~~~~~
  plugin_function.c:133:11: note: initialize the variable 'index' to silence this warning
          int index;
                   ^
                    = 0
  2 warnings generated.

Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-b5wyjocel55gorl2jq2cbxrr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 17:22:33 -03:00
Steven Rostedt (VMware)
14e4d7e0ab tools lib traceevent: Initialize lenght on OLD_RING_BUFFER_TYPE_TIME_STAMP
A undefined value was being used for the OLD_RING_BUFFER_TYPE_TIME_STAMP
case entry, as the 'length' variable was not being initialized, fix it.

Caught by the reporter when building tools/perf/ using clang, which emmitted
this warning:

  kbuffer-parse.c:312:7: warning: variable 'length' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized]
          case OLD_RINGBUF_TYPE_TIME_EXTEND:
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
  kbuffer-parse.c:339:29: note: uninitialized use occurs here
          kbuf->next = kbuf->index + length;
                                   ^~~~~~
  kbuffer-parse.c:297:21: note: initialize the variable 'length' to silence this warning
          unsigned int length;
                             ^
                              = 0

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20170213121418.47f279e8@gandalf.local.home
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 17:22:32 -03:00
Wang YanQing
d7dd112ea5 perf scripting perl: Fix compile error with some perl5 versions
Fix below compile error:

  CC       util/scripting-engines/trace-event-perl.o
  In file included from /usr/lib/perl5/5.22.2/i686-linux/CORE/perl.h:5673:0,
                   from util/scripting-engines/trace-event-perl.c:31:
  /usr/lib/perl5/5.22.2/i686-linux/CORE/inline.h: In function 'S__is_utf8_char_slow':
  /usr/lib/perl5/5.22.2/i686-linux/CORE/inline.h:270:5: error: nested extern declaration of 'Perl___notused' [-Werror=nested-externs]
          dTHX;   /* The function called below requires thread context */
			     ^
  cc1: all warnings being treated as errors

After digging perl5 repository, I find out that we will meet this
compile error with perl from v5.21.1 to v5.25.4

Signed-off-by: Wang YanQing <udknight@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170212024655.GA15997@udknight
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 17:22:32 -03:00
Namhyung Kim
be57b3fd21 perf diff: Change default setting to "delta-abs"
The "delta-abs" compute method will show most changed entries on top.
So users can easily see how much effect between the data.  Note that it
also changes the default of -o option to 1 in order to apply the compute
method.  To see original-style (sorted by baseline) use -o 0 option.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170210161856.18422-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 14:29:38 -03:00
Namhyung Kim
4b35994abe perf diff: Add diff.compute config option
The diff.compute config variable is to set the default compute method of
perf diff command (-c option).  Possible values 'delta' (default),
'delta-abs', 'ratio' and 'wdiff'.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Taeung Song <treeze.taeung@gmail.com>
Link: http://lkml.kernel.org/r/20170210073614.24584-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 14:29:37 -03:00
Namhyung Kim
d49dd15d69 perf diff: Add diff.order config option
In many cases, I need to look at differences between two data so I often
used the -o option to sort the result base on the difference first.
It'd be nice to have a config option to set it by default.

The diff.order config option is to set the default value of -o/--order
option.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Taeung Song <treeze.taeung@gmail.com>
Link: http://lkml.kernel.org/r/20170210073614.24584-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 14:29:37 -03:00
Namhyung Kim
a1668c25a8 perf diff: Add 'delta-abs' compute method
The 'delta-abs' compute method is same as 'delta' but shows entries with
bigger absolute delta first instead of sorting numerically.  This is
only useful together with -o option.

Below is default output (-c delta):

  $ perf diff -o 1 -c delta | grep -v ^# | head
    42.22%   +4.97%  [kernel.kallsyms]  [k] cfb_imageblit
     0.62%   +1.23%  [kernel.kallsyms]  [k] mutex_lock
             +1.15%  [kernel.kallsyms]  [k] copy_user_generic_string
     2.40%   +0.95%  [kernel.kallsyms]  [k] bit_putcs
     0.31%   +0.79%  [kernel.kallsyms]  [k] link_path_walk
             +0.64%  [kernel.kallsyms]  [k] kmem_cache_alloc
     0.00%   +0.57%  [kernel.kallsyms]  [k] __rcu_read_unlock
             +0.45%  [kernel.kallsyms]  [k] alloc_set_pte
     0.16%   +0.45%  [kernel.kallsyms]  [k] menu_select
             +0.41%  ld-2.24.so         [.] do_lookup_x

Now with 'delta-abs' it shows entries have bigger delta value either
positive or negative.

  $ perf diff -o 1 -c delta-abs | grep -v ^# | head
    42.22%   +4.97%  [kernel.kallsyms]  [k] cfb_imageblit
    12.72%   -3.01%  [kernel.kallsyms]  [k] intel_idle
     9.72%   -1.31%  [unknown]          [.] 0x0000000000411343
     0.62%   +1.23%  [kernel.kallsyms]  [k] mutex_lock
     2.40%   +0.95%  [kernel.kallsyms]  [k] bit_putcs
     0.31%   +0.79%  [kernel.kallsyms]  [k] link_path_walk
     1.35%   -0.71%  [kernel.kallsyms]  [k] smp_call_function_single
     0.00%   +0.57%  [kernel.kallsyms]  [k] __rcu_read_unlock
     0.16%   +0.45%  [kernel.kallsyms]  [k] menu_select
     0.72%   -0.44%  [kernel.kallsyms]  [k] lookup_fast

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170210073614.24584-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 14:29:36 -03:00
Arnaldo Carvalho de Melo
192614010a tools include: Introduce linux/compiler-gcc.h
To match the kernel headers structure, setting up things that are
specific to gcc or to some specific version of gcc.

It gets included by linux/compiler.h when gcc is the compiler being
used.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-fabcqfq4asodq9t158hcs8t3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-13 14:29:29 -03:00
Alexei Starovoitov
7f67763337 bpf: introduce BPF_F_ALLOW_OVERRIDE flag
If BPF_F_ALLOW_OVERRIDE flag is used in BPF_PROG_ATTACH command
to the given cgroup the descendent cgroup will be able to override
effective bpf program that was inherited from this cgroup.
By default it's not passed, therefore override is disallowed.

Examples:
1.
prog X attached to /A with default
prog Y fails to attach to /A/B and /A/B/C
Everything under /A runs prog X

2.
prog X attached to /A with allow_override.
prog Y fails to attach to /A/B with default (non-override)
prog M attached to /A/B with allow_override.
Everything under /A/B runs prog M only.

3.
prog X attached to /A with allow_override.
prog Y fails to attach to /A with default.
The user has to detach first to switch the mode.

In the future this behavior may be extended with a chain of
non-overridable programs.

Also fix the bug where detach from cgroup where nothing is attached
was not throwing error. Return ENOENT in such case.

Add several testcases and adjust libbpf.

Fixes: 3007098494be ("cgroup: add support for eBPF programs")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-12 21:52:19 -05:00
Mickaël Salaün
bc6a3d9977 bpf: Add test_tag to .gitignore
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:08 -05:00
Mickaël Salaün
702498a142 bpf: Remove bpf_sys.h from selftests
Add require dependency headers.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:08 -05:00
Mickaël Salaün
f4874d01be bpf: Use bpf_create_map() from the library
Replace bpf_map_create() with bpf_create_map() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
5f155c2563 bpf: Use bpf_map_get_next_key() from the library
Replace bpf_map_next_key() with bpf_map_get_next_key() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
e58383b803 bpf: Use bpf_map_delete_elem() from the library
Replace bpf_map_delete() with bpf_map_delete_elem() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
e5ff7c4019 bpf: Use bpf_map_lookup_elem() from the library
Replace bpf_map_lookup() with bpf_map_lookup_elem() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
10ecc728fe bpf: Use bpf_map_update_elem() from the library
Replace bpf_map_update() with bpf_map_update_elem() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:07 -05:00
Mickaël Salaün
2ee89fb9a9 bpf: Use bpf_load_program() from the library
Replace bpf_prog_load() with bpf_load_program() calls.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:06 -05:00
Mickaël Salaün
d02d8986a7 bpf: Always test unprivileged programs
If selftests are run as root, then execute the unprivileged checks as
well. This switch from 243 to 368 tests.

The test numbers are suffixed with "/u" when executed as unprivileged or
with "/p" when executed as privileged.

The geteuid() check is replaced with a capability check.

Handling capabilities requires the libcap dependency.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:06 -05:00
Mickaël Salaün
7f73f39a89 bpf: Change the include directory for selftest
Use the tools include directory instead of the installed one to allow
builds from other kernels.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:06 -05:00
Mickaël Salaün
9a7382662f tools: Sync {,tools/}include/uapi/linux/bpf.h
The tools version of this header is out of date; update it to the latest
version from kernel header.

Synchronize with the following commits:
* b95a5c4db09b ("bpf: add a longest prefix match trie map implementation")
* a5e8c07059d0 ("bpf: add bpf_probe_read_str helper")
* d1b662adcdb8 ("bpf: allow option for setting bpf_l4_csum_replace from scratch")

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Daniel Mack <daniel@zonque.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Gianluca Borello <g.borello@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10 15:56:05 -05:00
Arnaldo Carvalho de Melo
7ea6856d6f perf intel-pt: Use __fallthrough
To address new warnings emmited by gcc 7, e.g.::

    CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.o
    CC       /tmp/build/perf/tests/parse-events.o
  util/intel-pt-decoder/intel-pt-pkt-decoder.c: In function 'intel_pt_pkt_desc':
  util/intel-pt-decoder/intel-pt-pkt-decoder.c:499:6: error: this statement may fall through [-Werror=implicit-fallthrough=]
     if (!(packet->count))
        ^
  util/intel-pt-decoder/intel-pt-pkt-decoder.c:501:2: note: here
    case INTEL_PT_CYC:
    ^~~~
    CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-decoder.o
  cc1: all warnings being treated as errors

Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-mf0hw789pu9x855us5l32c83@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-09 16:32:03 -03:00
Arnaldo Carvalho de Melo
2e2bbc039f perf tests: Avoid possible truncation with dirent->d_name + snprintf
Addressing a few cases spotted by a new warning in gcc 7:

  tests/parse-events.c: In function 'test_pmu_events':
  tests/parse-events.c:1790:39: error: '%s' directive output may be truncated writing up to 255 bytes into a region of size 90 [-Werror=format-truncation=]
     snprintf(name, MAX_NAME, "cpu/event=%s/u", ent->d_name);
                                       ^~
  In file included from /usr/include/stdio.h:939:0,
                   from /git/linux/tools/perf/util/map.h:9,
                   from /git/linux/tools/perf/util/symbol.h:7,
                   from /git/linux/tools/perf/util/evsel.h:10,
                   from tests/parse-events.c:3:
  /usr/include/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 13 and 268 bytes into a destination of size 100
     return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          __bos (__s), __fmt, __va_arg_pack ());
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  tests/parse-events.c:1798:29: error: '%s' directive output may be truncated writing up to 255 bytes into a region of size 100 [-Werror=format-truncation=]
     snprintf(name, MAX_NAME, "%s:u,cpu/event=%s/u", ent->d_name, ent->d_name);

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: 945aea220bb8 ("perf tests: Move test objects into 'tests' directory")
Link: http://lkml.kernel.org/n/tip-ty4q2p8zp1dp3mskvubxskm5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-09 14:48:46 -03:00
Arnaldo Carvalho de Melo
3aff8ba0a4 perf bench numa: Avoid possible truncation when using snprintf()
Addressing this warning from gcc 7:

    CC       /tmp/build/perf/bench/numa.o
  bench/numa.c: In function '__bench_numa':
  bench/numa.c:1582:42: error: '%d' directive output may be truncated writing between 1 and 10 bytes into a region of size between 8 and 17 [-Werror=format-truncation=]
       snprintf(tname, 32, "process%d:thread%d", p, t);
                                            ^~
  bench/numa.c:1582:25: note: directive argument in the range [0, 2147483647]
       snprintf(tname, 32, "process%d:thread%d", p, t);
                           ^~~~~~~~~~~~~~~~~~~~
  In file included from /usr/include/stdio.h:939:0,
                   from bench/../util/util.h:47,
                   from bench/../builtin.h:4,
                   from bench/numa.c:11:
  /usr/include/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 17 and 35 bytes into a destination of size 32
     return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          __bos (__s), __fmt, __va_arg_pack ());
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  cc1: all warnings being treated as errors

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Petr Holasek <pholasek@redhat.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-twa37vsfqcie5gwpqwnjuuz9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-09 14:39:42 -03:00
Bob Moore
7735ca0eb4 ACPICA: Source tree: Update copyright notices to 2017
ACPICA commit 16577e5265923f4999b4d2c0addb2343b18135e1

Affects all files.

Link: https://github.com/acpica/acpica/commit/16577e52
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-09 14:47:02 +01:00
Arnaldo Carvalho de Melo
8434a2ec13 perf header: Fix handling of PERF_EVENT_UPDATE__SCALE
In commit daeecbc0c431 ("perf tools: Add event_update event scale type"), the
handling of PERF_EVENT_UPDATE__SCALE cast struct event_update_event->data to a
pointer to event_update_event_scale, uses some field from this casted struct
and then ends up falling through to the handling of another event type,
PERF_EVENT_UPDATE__CPUS were it casts that ev->data to yet another type, oops,
fix it by inserting the missing break.

Noticed when building perf using gcc 7 on Fedora Rawhide:

  util/header.c: In function 'perf_event__process_event_update':
  util/header.c:3207:16: error: this statement may fall through [-Werror=implicit-fallthrough=]
     evsel->scale = ev_scale->scale;
     ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
  util/header.c:3208:2: note: here
    case PERF_EVENT_UPDATE__CPUS:
    ^~~~

This wasn't noticed because probably PERF_EVENT_UPDATE__CPUS comes after
PERF_EVENT_UPDATE__SCALE, so we would just create a bogus evsel->own_cpus when
processing a PERF_EVENT_UPDATE__SCALE to then leak it and create a new cpu map
with the correct data.

Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Fixes: daeecbc0c431 ("perf tools: Add event_update event scale type")
Link: http://lkml.kernel.org/n/tip-lukcf9hdj092ax2914ss95at@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 22:06:18 -03:00
Arnaldo Carvalho de Melo
bdf23a9a19 perf thread_map: Correctly size buffer used with dirent->dt_name
The size of dirent->dt_name is NAME_MAX + 1, but the size for the 'path'
buffer is hard coded at 256, which may truncate it because we also
prepend "/proc/", so that all that into account and thank gcc 7 for this
warning:

  /git/linux/tools/perf/util/thread_map.c: In function 'thread_map__new_by_uid':
  /git/linux/tools/perf/util/thread_map.c:119:39: error: '%s' directive output may be truncated writing up to 255 bytes into a region of size 250 [-Werror=format-truncation=]
     snprintf(path, sizeof(path), "/proc/%s", dirent->d_name);
                                         ^~
  In file included from /usr/include/stdio.h:939:0,
                   from /git/linux/tools/perf/util/thread_map.c:5:
  /usr/include/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 7 and 262 bytes into a destination of size 256
     return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          __bos (__s), __fmt, __va_arg_pack ());
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-csy0r8zrvz5efccgd4k12c82@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 17:31:28 -03:00
Arnaldo Carvalho de Melo
7b0214b702 perf top: Use __fallthrough
The implicit fall through case label here is intended, so let us inform
that to gcc >= 7:

    CC       /tmp/build/perf/builtin-top.o
  builtin-top.c: In function 'display_thread':
  builtin-top.c:644:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
      if (errno == EINTR)
         ^
  builtin-top.c:647:3: note: here
     default:
   ^~~~~~~

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-lmcfnnyx9ic0m6j0aud98p4e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 17:31:22 -03:00
Arnaldo Carvalho de Melo
d64b721d27 tools strfilter: Use __fallthrough
The implicit fall through case label here is intended, so let us inform
that to gcc >= 7:

  util/strfilter.c: In function 'strfilter_node__sprint':
  util/strfilter.c:270:6: error: this statement may fall through [-Werror=implicit-fallthrough=]
     if (len < 0)
        ^
  util/strfilter.c:272:2: note: here
    case '!':
    ^~~~
  cc1: all warnings being treated as errors

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-z2dpywg7u8fim000hjfbpyfm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 17:31:10 -03:00
Arnaldo Carvalho de Melo
94bdd5edb3 tools string: Use __fallthrough in perf_atoll()
The implicit fall through case label here is intended, so let us inform
that to gcc >= 7:

    CC       /tmp/build/perf/util/string.o
  util/string.c: In function 'perf_atoll':
  util/string.c:22:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
      if (*p)
         ^
  util/string.c:24:3: note: here
     case '\0':
     ^~~~

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-0ophb30v9apkk6o95el0rqlq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 17:31:01 -03:00
Arnaldo Carvalho de Melo
b5bf1733d6 tools include: Add a __fallthrough statement
For cases where implicit fall through case labels are intended,
to let us inform that to gcc >= 7:

    CC       /tmp/build/perf/util/string.o
  util/string.c: In function 'perf_atoll':
  util/string.c:22:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
      if (*p)
         ^
  util/string.c:24:3: note: here
     case '\0':
     ^~~~

So we introduce:

  #define __fallthrough __attribute__ ((fallthrough))

And use it in such cases.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: William Cohen <wcohen@redhat.com>
Link: http://lkml.kernel.org/n/tip-qnpig0xfop4hwv6k4mv1wts5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 17:30:58 -03:00
Mickaël Salaün
7a5980f9c0 tools lib bpf: Add missing header to the library
Include stddef.h to define size_t.

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Acked-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joe Stringer <joe@ovn.org>
Link: http://lkml.kernel.org/r/20170207205609.8035-2-mic@digikod.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 16:39:16 -03:00
Andi Kleen
7666702417 perf vendor events intel: Add uncore events for Broadwell DE
This is not a full uncore event list, but a short list of useful
and understandable metrics.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/n/tip-c0cix4eprbldfrx5zf60suvh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 16:38:25 -03:00
Andi Kleen
22c8e5526b perf vendor events intel: Add uncore events for Xeon Phi (Knights Landing)
Add metrics for memory and MCDRAM. Minimal metrics only for now.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/n/tip-c0cix4eprbldfrx5zf60suvh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 16:38:03 -03:00
Andi Kleen
dd32cb5d8f perf vendor events intel: Add uncore events for Sandy Bridge Server
This is not a full uncore event list, but a short list of useful
and understandable metrics.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/n/tip-c0cix4eprbldfrx5zf60suvh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 16:37:35 -03:00
Andi Kleen
6b138c7b14 perf vendor events intel: Add uncore events for IvyBridge Server
This is not a full uncore event list, but a short list of useful
and understandable metrics.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/n/tip-c0cix4eprbldfrx5zf60suvh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 16:37:10 -03:00
Andi Kleen
949c84efca perf vendor events intel: Add uncore events for Broadwell Server
This is not a full uncore event list, but a short list of useful
and understandable metrics.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/n/tip-c0cix4eprbldfrx5zf60suvh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 16:36:32 -03:00
Andi Kleen
7003f00fdb perf vendor events intel: Add uncore events for Haswell Server processor
This is not a full uncore event list, but a short list of useful and
understandable metrics.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/n/tip-c0cix4eprbldfrx5zf60suvh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 16:36:12 -03:00
Arnaldo Carvalho de Melo
2f7db55579 perf tools: Fix include of linux/mman.h
It was using uapi/linux/mmap.h which caused for at least one reporter,
that hasn't specified in what environment the problem manifests itself:

 ----
The original error is:

In file included from util/event.c:2:0:
...tools/include/uapi/linux/mman.h:4:27: fatal error: uapi/asm/mman.h:
No such file or directory
 #include <uapi/asm/mman.h>
                           ^
compilation terminated.
 ----

Test built it on these containers:

  # dm
   1 alpine:3.4: Ok
   2 android-ndk:r12b-arm: Ok
   3 archlinux:latest: Ok
   4 centos:5: Ok
   5 centos:6: Ok
   6 centos:7: Ok
   7 debian:7: Ok
   8 debian:8: Ok
   9 debian:experimental: Ok
  10 debian:experimental-x-arm64: Ok
  11 debian:experimental-x-mips: Ok
  12 debian:experimental-x-mips64: Ok
  13 debian:experimental-x-mipsel: Ok
  14 fedora:20: Ok
  15 fedora:21: Ok
  16 fedora:22: Ok
  17 fedora:23: Ok
  18 fedora:24: Ok
  19 fedora:24-x-ARC-uClibc: Ok
  20 fedora:25: Ok
  21 fedora:rawhide: Ok
  22 mageia:5: Ok
  23 opensuse:13.2: Ok
  24 opensuse:42.1: Ok
  25 opensuse:tumbleweed: Ok
  26 ubuntu:12.04.5: Ok
  27 ubuntu:14.04.4-x-linaro-arm64: Ok
  28 ubuntu:15.10: Ok
  29 ubuntu:16.04: Ok
  30 ubuntu:16.04-x-arm: Ok
  31 ubuntu:16.04-x-arm64: Ok
  32 ubuntu:16.04-x-powerpc: Ok
  33 ubuntu:16.04-x-powerpc64: Ok
  34 ubuntu:16.04-x-powerpc64el: Ok
  35 ubuntu:16.04-x-s390: Ok
  36 ubuntu:16.10: Ok

Reported-by: David Carrillo-Cisneros <davidcc@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Michal Marek <mmarek@suse.com>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: fbef103fad50 ("perf tools: Do hugetlb handling in more systems")
Link: http://lkml.kernel.org/n/tip-4wm5xmjz5wgbq7ucyz4dyd72@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-08 16:06:21 -03:00