StarFive's Dubhe-80 supports raw event id 0x00 - 0x22.  The raw events
are enabled through PMU node of DT binding.  Besides raw event, add
standard RISC-V firmware events to support monitoring of firmware event.

Example of PMU DT node:

  pmu {
  	compatible = "riscv,pmu";
  	riscv,raw-event-to-mhpmcounters =
  		/* Event ID 1-31 */
  		<0x00 0x00 0xFFFFFFFF 0xFFFFFFE0 0x00007FF8>,
  		/* Event ID 32-33 */
  		<0x00 0x20 0xFFFFFFFF 0xFFFFFFFE 0x00007FF8>,
  		/* Event ID 34 */
  		<0x00 0x22 0xFFFFFFFF 0xFFFFFF22 0x00007FF8>;
  };

Example of 'perf stat' output:

  [root@user]# perf stat -a \
  	-e access_mmu_stlb \
  	-e miss_mmu_stlb \
  	-e access_mmu_pte_c \
  	-e rob_flush \
  	-e btb_prediction_miss \
  	-e itlb_miss \
  	-e sync_del_fetch_g \
  	-e icache_miss \
  	-e bpu_br_retire \
  	-e bpu_br_miss \
  	-e ret_ins_retire \
  	-e ret_ins_miss \
  	-- openssl speed rsa2048

  Doing 2048 bits private rsa's for 10s: 39 2048 bits private RSA's in
  10.14s
  Doing 2048 bits public rsa's for 10s: 1563 2048 bits public RSA's in
  10.00s
  version: 3.0.11
  built on: Tue Sep 19 13:02:31 2023 UTC
  options: bn(64,64)
  CPUINFO: N/A
                    sign    verify    sign/s verify/s
  rsa 2048 bits 0.260000s 0.006398s      3.8    156.3

   Performance counter stats for 'system wide':

             1338350      access_mmu_stlb
             1154025      miss_mmu_stlb
             1162691      access_mmu_pte_c
               34067      rob_flush
            11212384      btb_prediction_miss
             1256242      itlb_miss
           652523491      sync_del_fetch_g
              384465      icache_miss
            64635789      bpu_br_retire
              323440      bpu_br_miss
             8785143      ret_ins_retire
               31236      ret_ins_miss

        20.760822480 seconds time elapsed
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Ji Sheng Teoh <jisheng.teoh@starfivetech.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Ley Foon Tan <leyfoon.tan@starfivetech.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nikita Shubin <n.shubin@yadro.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-riscv@lists.infradead.org
Link: https://lore.kernel.org/r/20231103082441.1389842-1-jisheng.teoh@starfivetech.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Commit 39d62336 ("s390/pai: add support for cryptography
counters") added support for Processor Activity Instrumentation Facility
(PAI) counters.  These counters values are added as raw data with the
perf sample during 'perf record'.

Now add support to display these counters in the 'perf report' command.

The counter number, its assigned name and value is now printed in
addition to the hexadecimal output.

Output before:

  # perf report -D

  6 514766399626050 0x7b058 [0x48]: PERF_RECORD_SAMPLE(IP, 0x1):
 				303977/303977: 0 period: 1 addr: 0
  ... thread: paitest:303977
  ...... dso: <not found>

  0x7b0a0@/root/perf.data.paicrypto [0x48]: event: 9
  .
  . ... raw event: size 72 bytes
  . 0000:  00 00 00 09 00 01 00 48 00 00 00 00 00 00 00 00  .......H........
  . 0010:  00 04 a3 69 00 04 a3 69 00 01 d4 2d 76 de a0 bb  ...i...i...-v...
  . 0020:  00 00 00 00 00 01 5c 53 00 00 00 06 00 00 00 00  ......\S........
  . 0030:  00 00 00 00 00 00 00 01 00 00 00 0c 00 07 00 00  ................
  . 0040:  00 00 00 53 96 af 00 00                          ...S....

Output after:

  # perf report -D

  6 514766399626050 0x7b058 [0x48]: PERF_RECORD_SAMPLE(IP, 0x1):
 				303977/303977: 0 period: 1 addr: 0
  ... thread: paitest:303977
  ...... dso: <not found>

  0x7b0a0@/root/perf.data.paicrypto [0x48]: event: 9
  .
  . ... raw event: size 72 bytes
  . 0000:  00 00 00 09 00 01 00 48 00 00 00 00 00 00 00 00  .......H........
  . 0010:  00 04 a3 69 00 04 a3 69 00 01 d4 2d 76 de a0 bb  ...i...i...-v...
  . 0020:  00 00 00 00 00 01 5c 53 00 00 00 06 00 00 00 00  ......\S........
  . 0030:  00 00 00 00 00 00 00 01 00 00 00 0c 00 07 00 00  ................
  . 0040:  00 00 00 53 96 af 00 00                          ...S....

        Counter:007 km_aes_128 Value:0x00000000005396af     <--- new

Committer notes:

Had to add ignore pragmas for that __packed function:

  +#pragma GCC diagnostic ignored "-Wpacked"
  +#pragma GCC diagnostic ignored "-Wattributes"

Otherwise this doesn't build in things like debian experimentao cross
building to mips64, etc.
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Tested-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: https://lore.kernel.org/r/20231110110908.2312308-1-tmricht@linux.ibm.com
[ Corrected non-existent commit referred to the right one: 39d62336 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Now it has a feature check for the dwarf_getcfi(), use it and convert
the code to check HAVE_DWARF_CFI_SUPPORT definition.
Suggested-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.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: 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/20231110000012.3538610-10-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The dwarf_getcfi() is available on libdw 0.142+.  Instead of just
checking the version number, it'd be nice to have a config item to check
the feature at build time.
Suggested-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.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: 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/20231110000012.3538610-9-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The die_find_variable_by_reg() will search for a variable or a parameter
sub-DIE in the given scope DIE where the location matches to the given
register.

For the simplest and most common case, memory access usually happens
with a base register and an offset to the field so the register holds a
pointer in a variable or function parameter.  Then we can find one if it
has a location expression at the (instruction) address.  This function
only handles such a simple case for now.

In this case, the expression has a DW_OP_regN operation where N < 32.
If the register index (N) is greater than or equal to 32, DW_OP_regx
operation with an operand which saves the value for the N would be used.
It rejects expressions with more operations.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.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: 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/20231110000012.3538610-8-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The die_get_scopes() returns the number of enclosing DIEs for the given
address and it fills an array of DIEs like dwarf_getscopes().  But it
doesn't follow the abstract origin of inlined functions as we want
information of the concrete instance.  This is needed to check the
location of parameters and local variables properly.  Users can check
the origin separately if needed.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.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: 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/20231110000012.3538610-7-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

It's a usual convention that the conditional code is handled in a header
file.  As I'm planning to add some more of them, let's move the current
code to the header first.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.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: 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/20231110000012.3538610-6-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The die_get_typename() is to return a C-like type name from DWARF debug
entry and it follows data type if the target entry is a pointer type.

But I found that void pointers don't have the type attribute to follow
and then the function returns an error for that case.  This results in a
broken type string for void pointer types.

For example, the following type entries are pointer types.

 <1><48c>: Abbrev Number: 4 (DW_TAG_pointer_type)
    <48d>   DW_AT_byte_size   : 8
    <48d>   DW_AT_type        : <0x481>
 <1><491>: Abbrev Number: 211 (DW_TAG_pointer_type)
    <493>   DW_AT_byte_size   : 8
 <1><494>: Abbrev Number: 4 (DW_TAG_pointer_type)
    <495>   DW_AT_byte_size   : 8
    <495>   DW_AT_type        : <0x49e>

The first one at offset 48c and the third one at offset 494 have type
information.  Then they are pointer types for the referenced types.  But
the second one at offset 491 doesn't have the type attribute.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.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: 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/20231110000012.3538610-5-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Split debuginfo data structure and related functions into a separate
file so that it can be used by other components than the probe-finder.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.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 (Google) <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/20231110000012.3538610-4-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Thoese two fields are used only for the jump_ops, so move them into the
union to save some bytes.  Also add jump__delete() callback not to free
the fields as they didn't allocate new strings.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
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 (Google) <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: WANG Rui <wangrui@loongson.cn>
Cc: linux-toolchains@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Link: https://lore.kernel.org/r/20231110000012.3538610-3-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The "-l" option is to print line numbers in the objdump output.  perf
annotate TUI only can show the line numbers later but it causes big slow
downs for the kernel binary.

Similarly, showing source code also takes a long time and it already has
an option to control it.

  $ time objdump ... -d -S -C vmlinux > /dev/null
  real	0m3.474s
  user	0m3.047s
  sys	0m0.428s

  $ time objdump ... -d -l -C vmlinux > /dev/null
  real	0m1.796s
  user	0m1.459s
  sys	0m0.338s

  $ time objdump ... -d -C vmlinux > /dev/null
  real	0m0.051s
  user	0m0.036s
  sys	0m0.016s

As it's not needed for data type profiling, let's make it conditional so
that it can skip the unnecessary work.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.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 (Google) <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/20231110000012.3538610-2-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

x86 core PMU exposes supported maximum precision level via max_precise
PMU capability. Although, AMD core PMU does not support precise mode,
certain core PMU events with precise_ip > 0 are allowed and forwarded to
IBS OP PMU.

Display a note about this in the 'perf report' header output and
document the details in the perf-list man page.
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ross Zwisler <zwisler@chromium.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20231107083331.901-2-ravi.bangoria@amd.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Noticed on several perf tools cross build test containers:

  [perfbuilder@five ~]$ grep FAIL ~/dm.log/summary
    19    10.18 debian:experimental-x-mips    : FAIL gcc version 12.3.0 (Debian 12.3.0-6)
    20    11.21 debian:experimental-x-mips64  : FAIL gcc version 12.3.0 (Debian 12.3.0-6)
    21    11.30 debian:experimental-x-mipsel  : FAIL gcc version 12.3.0 (Debian 12.3.0-6)
    37    12.07 ubuntu:18.04-x-arm            : FAIL gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)
    42    11.91 ubuntu:18.04-x-riscv64        : FAIL gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
    44    13.17 ubuntu:18.04-x-sh4            : FAIL gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
    45    12.09 ubuntu:18.04-x-sparc64        : FAIL gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
  [perfbuilder@five ~]$

  In file included from util/intel-pt-decoder/intel-pt-pkt-decoder.c:10:
  /tmp/perf-6.6.0-rc1/tools/include/asm-generic/unaligned.h: In function 'get_unaligned_le16':
  /tmp/perf-6.6.0-rc1/tools/include/asm-generic/unaligned.h:13:29: error: packed attribute causes inefficient alignment for 'x' [-Werror=attributes]
     13 |         const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);      \
        |                             ^
  /tmp/perf-6.6.0-rc1/tools/include/asm-generic/unaligned.h:27:28: note: in expansion of macro '__get_unaligned_t'
     27 |         return le16_to_cpu(__get_unaligned_t(__le16, p));
        |                            ^~~~~~~~~~~~~~~~~

This comes from the kernel, where the -Wattributes and -Wpacked isn't
used, -Wpacked is already disabled, do it for the attributes as well.

Fixes: a91c9872 ("perf tools: Add get_unaligned_leNN()")
Suggested-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/7c5b626c-1de9-4c12-a781-e44985b4a797@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

If BPF sideband events are disabled on the command line, don't
synthesize BPF events too.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Song Liu <song@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Li Dong <lidong@vivo.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: Wenyu Liu <liuwenyu7@huawei.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20231102175735.2272696-13-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Add a 'perf config' variable that does the same thing as "perf test
--objdump <x>".

Also update the man page.

Committer testing:

  # perf config test.objdump
  # perf test "object code reading"
   26: Object code reading                                             : Ok
  # perf config test.objdump=blah
  # perf config test.objdump
  test.objdump=blah
  # perf test "object code reading"
   26: Object code reading                                             : FAILED!
  # perf test -v "object code reading"
   26: Object code reading                                             :
  --- start ---
  test child forked, pid 600599
  Looking at the vmlinux_path (8 entries long)
  Using /proc/kcore for kernel data
  Using /proc/kallsyms for symbols
  Parsing event 'cycles'
  Using CPUID AuthenticAMD-25-21-0
  mmap size 528384B
  Reading object code for memory address: 0x4d9a02
  File is: /home/acme/bin/perf
  On file address is: 0xd9a02
  Objdump command is: blah -z -d --start-address=0x4d9a02 --stop-address=0x4d9a82 /home/acme/bin/perf
  objdump read too few bytes: 128
  Bytes read differ from those read by objdump
  buf1 (dso):
  0x48 0x85 0xff 0x74 0x29 0xe8 0x94 0xdf 0x07 0x00 0x8b 0x73 0x1c 0x48 0x8b 0x43
  0x08 0xeb 0xa5 0x0f 0x1f 0x00 0x48 0x8b 0x45 0xe8 0x64 0x48 0x2b 0x04 0x25 0x28
  0x00 0x00 0x00 0x75 0x0f 0x48 0x8b 0x5d 0xf8 0xc9 0xc3 0x0f 0x1f 0x00 0x48 0x8b
  0x43 0x08 0xeb 0x84 0xe8 0xc5 0x3e 0xf3 0xff 0x0f 0x1f 0x44 0x00 0x00 0x55 0x48
  0x89 0xe5 0x41 0x56 0x41 0x55 0x49 0x89 0xd5 0x41 0x54 0x49 0x89 0xfc 0x53 0x48
  0x89 0xf3 0x48 0x83 0xec 0x30 0x48 0x8b 0x7e 0x20 0x64 0x48 0x8b 0x04 0x25 0x28
  0x00 0x00 0x00 0x48 0x89 0x45 0xd8 0x31 0xc0 0x48 0x89 0x75 0xb0 0x48 0xc7 0x45
  0xb8 0x00 0x00 0x00 0x00 0x48 0xc7 0x45 0xc0 0x00 0x00 0x00 0x00 0xe8 0xad 0xfa

  buf2 (objdump):
  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00

  test child finished with -1
  ---- end ----
  Object code reading: FAILED!
  # perf config test.objdump=/usr/bin/objdump
  # perf config test.objdump
  test.objdump=/usr/bin/objdump
  # perf test "object code reading"
   26: Object code reading                                             : Ok
  #
Signed-off-by: James Clark <james.clark@arm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Tom Rix <trix@redhat.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: llvm@lists.linux.dev
Link: https://lore.kernel.org/r/20231106151051.129440-3-james.clark@arm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

All of the other Perf subcommands that use objdump have an option to
specify the binary, so add the same option to 'perf test'.

This is useful if you have built the kernel with a different toolchain
to the system one, where the system objdump may fail to disassemble
vmlinux.

Now this can be fixed with something like this:

  $ perf test --objdump llvm-objdump "object code reading"
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Tom Rix <trix@redhat.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: llvm@lists.linux.dev
Link: https://lore.kernel.org/r/20231106151051.129440-2-james.clark@arm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

On s390 using linux-next the test case:

    87: perf record offcpu profiling tests

fails. The root cause is this command

  # ./perf  record --off-cpu -e dummy -- ./perf bench sched messaging -l 10
  # Running 'sched/messaging' benchmark:
  # 20 sender and receiver processes per group
  # 10 groups == 400 processes run

     Total time: 0.231 [sec]
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.077 MB perf.data (401 samples) ]
  #

It does not generate 800+ sample entries, on s390 usually around
40[1-9], sometimes a few more, but never more than 450. The higher the
number of CPUs the lower the number of samples.

Looking at function chain:

  bench_sched_messaging()
  +--> group()

the senders and receiver threads are created. The senders and receivers
call function ready() which writes one bytes and wait for a reply using
poll system() call.

As context switches are counted, the function ready() will trigger a
context switch when no input data is available after the write system
call. The write system call does not trigger context switches when the
data size is small. And writing 1000 bytes (10 iterations with
100 bytes) is not much and certainly won't block.

The 400+ context switch on s390 occur when the some receiver/sender
threads call ready() and wait for the response from function
bench_sched_messaging() being kicked off.

Lower the number of expected context switches to 400 to succeed on s390.
Suggested-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Co-developed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20231106091627.2022530-1-tmricht@linux.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

`python_ext_build` is the build directory for python.so, ignore it for
cleaner git status.
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231030111438.1357962-2-yangjihong1@huawei.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

There is a spelling mistake, Please fix it.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: zhaimingbing <zhaimingbing@cmss.chinamobile.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-janitors@vger.kernel.org
Link: https://lore.kernel.org/r/20231030075825.3701-1-zhaimingbing@cmss.chinamobile.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The offsets array keeps pointers to 'struct annotation_line' entries
which are available in the 'struct annotated_source'.  Let's move it to
there.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231103191907.54531-6-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

perf annotate: Move some source code related fields from 'struct annotation' to 'struct annotated_source'

Some fields in the 'struct annotation' are only used with 'struct
annotated_source' so better to be moved there in order to reduce memory
consumption for other symbols.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231103191907.54531-5-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The max_coverage field is only used when branch stack info is available
so it'd be natural to move to 'struct annotated_branch'.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231103191907.54531-4-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The cycles info is only meaningful when sample has branch stacks.  To
save the memory for normal cases, move those fields to a new 'struct
annotated_branch' and dynamically allocate it when needed.  Also move
cycles_hist from annotated_source as it's related here.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231103191907.54531-3-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The cycles info is used only when branch stack is provided.  Separate
them from 'struct annotation_line' into a separate struct and lazy
allocate them to save some memory.

Committer notes:

Make annotation__compute_ipc() check if the lazy allocation works,
bailing out if so, its callers already do error checking and
propagation.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231103191907.54531-2-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

It tries cycles (or cpu-clock on s390) event with exclude_kernel bit to
open.  But other arch on a VM can fail with the hardware event and need
to fallback to the software event in the same way.

So let's get rid of the cpuid check and use generic fallback mechanism
using an array of event candidates.  Now event in the odd index excludes
the kernel so use that for the return value.
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: James Clark <james.clark@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20231103195541.67788-1-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

'struct thread' values hold onto references to mmaps, DSOs, etc. When a
thread exits it is necessary to clean all of this memory up by removing
the thread from the machine's threads. Some tools require this doesn't
happen, such as auxtrace events, 'perf report' if offcpu events exist or
if a task list is being generated, so add a 'struct symbol_conf' member
to make the behavior optional. When an exited thread is left in the
machine's threads, mark it as exited.

This change relates to commit 40826c45 ("perf thread: Remove
notion of dead threads") . Dead threads were removed as they had a
reference count of 0 and were difficult to reason about with the
reference count checker. Here a thread is removed from threads when it
exits, unless via symbol_conf the exited thread isn't remove and is
marked as exited. Reference counting behaves as it normally does.
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Li Dong <lidong@vivo.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: Wenyu Liu <liuwenyu7@huawei.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20231102175735.2272696-6-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Commit 5b7ba82a ("perf symbols: Load kernel maps before using")
changed it so that loading a kernel DSO would cause the symbols for the
DSO to be eagerly loaded.

For 'perf record' this is overhead as the symbols won't be used. Add a
field to 'struct symbol_conf' to control the behavior and disable it for
'perf record' and 'perf inject'.
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Li Dong <lidong@vivo.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: Wenyu Liu <liuwenyu7@huawei.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20231102175735.2272696-3-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

There are spelling mistakes in comments and a pr_debug message. Fix them.
Reviewed-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-janitors@vger.kernel.org
Link: https://lore.kernel.org/r/20231003074911.220216-1-colin.i.king@gmail.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Add a new branch filter, "counter", for the branch counter option. It is
used to mark the events which should be logged in the branch. If it is
applied with the -j option, the counters of all the events should be
logged in the branch. If the legacy kernel doesn't support the new
branch sample type, switching off the branch counter filter.

The stored counter values in each branch are displayed right after the
regular branch stack information via perf report -D.

Usage examples:

  # perf record -e "{branch-instructions,branch-misses}:S" -j any,counter

Only the first event, branch-instructions, collect the LBR. Both
branch-instructions and branch-misses are marked as logged events.  The
occurrences information of them can be found in the branch stack
extension space of each branch.

  # perf record -e "{cpu/branch-instructions,branch_type=any/,cpu/branch-misses,branch_type=counter/}"

Only the first event, branch-instructions, collect the LBR. Only the
branch-misses event is marked as a logged event.

Committer notes:

I noticed 'perf test "Sample parsing"' failing, reported to the list and
Kan provided a patch that checks if the evsel has a leader and that
evsel->evlist is set, the comment in the source code further explains
it.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tinghao Zhang <tinghao.zhang@intel.com>
Link: https://lore.kernel.org/r/20231025201626.3000228-8-kan.liang@linux.intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To support the branch counters feature, the information of the maximum
number of supported counters and the width of the counters is exposed in
the sysfs caps folder. The perf tool can use the information to parse
the logged counters in each branch.

Store the information in the perf_env for later usage.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tinghao Zhang <tinghao.zhang@intel.com>
Link: https://lore.kernel.org/r/20231025201626.3000228-7-kan.liang@linux.intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Sync the new sample type for the branch counters feature.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tinghao Zhang <tinghao.zhang@intel.com>
Link: https://lore.kernel.org/r/20231025201626.3000228-6-kan.liang@linux.intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

As libelf is a requirement for libbpf if it is not available, as in some
container build tests where NO_LIBELF=1 is used, then better warn about
the most basic library first.

Ditto for libz, check its availability before libbpf too.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/ZUEehyDk0FkPnvMR@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

One last case, caught while testing with amazonlinux:2, centos:stream,
etc:

   4     7.28 amazonlinux:2                 : FAIL egrep: warning: egrep is obsolescent; using grep -E
gcc version 7.3.1 20180712 (Red Hat 7.3.1-17) (GCC)
   8    13.87 centos:stream                 : FAIL egrep: warning: egrep is obsolescent; using grep -E
Reviewed-by: Guilherme Amadio <amadio@gentoo.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/ZUEdtblE8qDAQkBK@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Noticed on fedora 38, the extended regexp that so far was ok for both
grep and sed now gets complaints by grep, that says '/' doesn't need to
be escaped with '\'.

So stop using '/' in sed, use '%' instead and remove the \ before / in
the common extended regexp.

Link: https://x.com/SMT_Solvers/status/1710380010098344192?s=20
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/ZUEddFPTJHVLhH%2F6@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

To get the latest fixes in the perf tools including perf stat output,
dlfilter and LLVM feature detection.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Update tsx_cycles_per_elision as per:
https://github.com/intel/perfmon/pull/116

Prefer the el-start event rather than cycles-t for detecting whether
the metric will work as HLE may be disabled. Remove the metric from
sapphirerapids that has no el-start event.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20231026003149.3287633-9-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>

Spelling fixes were already incorporated in the Linux perf tree,
update the version number to reflect this.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20231026003149.3287633-8-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>

Update westmereex events from v3 to v4 fixing a spelling issue.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20231026003149.3287633-7-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>

Update meteorlake from v1.04 to v1.06 adding the changes from:
https://github.com/intel/perfmon/commit/bc84df043091ec7c98c0629f3d074d9d7a108194
https://github.com/intel/perfmon/commit/405d3ee987d756b5b5d9a64d8a8fa77559822ecfSigned-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20231026003149.3287633-6-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>

Update knightslanding from v10 to v16 adding the changes from:
https://github.com/intel/perfmon/commit/6c1f169f6ed63ee1fd75ebb303d0fd06d71196f5
https://github.com/intel/perfmon/commit/b22ca587ec8b5ac20471ea2f14924f63e63afe9d
https://github.com/intel/perfmon/commit/e685286f083ee81cb7dafd0cd8546c79ee433187Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20231026003149.3287633-5-irogers@google.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>