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2018-03-08perf annotate: Support to display the IPC/Cycle in TUI modeJin Yao
Unlike the perf report interactive annotate mode, the perf annotate doesn't display the IPC/Cycle even if branch info is recorded in perf data file. perf record -b ... perf annotate function It should show IPC/cycle, but it doesn't. This patch lets perf annotate support the displaying of IPC/Cycle if branch info is in perf data. For example, perf annotate compute_flag Percent│ IPC Cycle │ │ │ Disassembly of section .text: │ │ 0000000000400640 <compute_flag>: │ compute_flag(): │ volatile int count; │ static unsigned int s_randseed; │ │ __attribute__((noinline)) │ int compute_flag() │ { 22.96 │1.18 584 sub $0x8,%rsp │ int i; │ │ i = rand() % 2; 23.02 │1.18 1 → callq rand@plt │ │ return i; 27.05 │3.37 mov %eax,%edx │ } │3.37 add $0x8,%rsp │ { │ int i; │ │ i = rand() % 2; │ │ return i; │3.37 shr $0x1f,%edx │3.37 add %edx,%eax │3.37 and $0x1,%eax │3.37 sub %edx,%eax │ } 26.97 │3.37 2 ← retq Note that, this patch only supports TUI mode. For stdio, now it just keeps original behavior. Will support it in a follow-up patch. $ perf annotate compute_flag --stdio Percent | Source code & Disassembly of div for cycles:ppp (7993 samples) ------------------------------------------------------------------------------ : : : : Disassembly of section .text: : : 0000000000400640 <compute_flag>: : compute_flag(): : volatile int count; : static unsigned int s_randseed; : : __attribute__((noinline)) : int compute_flag() : { 0.29 : 400640: sub $0x8,%rsp # +100.00% : int i; : : i = rand() % 2; 42.93 : 400644: callq 400490 <rand@plt> # -100.00% (p:100.00%) : : return i; 0.10 : 400649: mov %eax,%edx # +100.00% : } 0.94 : 40064b: add $0x8,%rsp : { : int i; : : i = rand() % 2; : : return i; 27.02 : 40064f: shr $0x1f,%edx 0.15 : 400652: add %edx,%eax 1.24 : 400654: and $0x1,%eax 2.08 : 400657: sub %edx,%eax : } 25.26 : 400659: retq # -100.00% (p:100.00%) Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/20180223170210.GC7045@tassilo.jf.intel.com Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1519724327-7773-1-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf report: Provide libtraceevent with a kernel symbol resolverWang YanQing
So that beautifiers wanting to resolve kernel function addresses to names can do its work, and when we use "perf report" for output of "perf kmem record", we will get kernel symbol output. This patch affect the output of "perf report" for the record data generated by "perf kmem record" looks like below: Before patch: 0.01% call_site=ffffffff814e5828 ptr=0x99bb000 bytes_req=3616 bytes_alloc=4096 gfp_flags=GFP_ATOMIC 0.01% call_site=ffffffff81370b87 ptr=0x428a3060 bytes_req=32 bytes_alloc=32 gfp_flags=GFP_KERNEL|GFP_ZERO After patch: 0.01% (aa_alloc_task_context+0x27) call_site=ffffffff81370b87 ptr=0x428a3060 bytes_req=32 bytes_alloc=32 gfp_flags=GFP_KERNEL|GFP_ZERO 0.01% (__tty_buffer_request_room+0x88) call_site=ffffffff814e5828 ptr=0x99bb000 bytes_req=3616 bytes_alloc=4096 gfp_flags=GFP_ATOMIC Signed-off-by: Wang YanQing <udknight@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180308032850.GA12383@udknight-ThinkPad-E550 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf tools: Update tags with .cpp filesJiri Olsa
We have some .cpp files, make ctags/cscope aware of them. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180307155020.32613-17-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf tools: Add MEM_TOPOLOGY feature to perf data fileJiri Olsa
Adding MEM_TOPOLOGY feature to perf data file, that will carry physical memory map and its node assignments. The format of data in MEM_TOPOLOGY is as follows: 0 - version | for future changes 8 - block_size_bytes | /sys/devices/system/memory/block_size_bytes 16 - count | number of nodes For each node we store map of physical indexes for each node: 32 - node id | node index 40 - size | size of bitmap 48 - bitmap | bitmap of memory indexes that belongs to node | /sys/devices/system/node/node<NODE>/memory<INDEX> The MEM_TOPOLOGY could be displayed with following report command: $ perf report --header-only -I ... # memory nodes (nr 1, block size 0x8000000): # 0 [7G]: 0-23,32-69 Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180307155020.32613-8-jolsa@kernel.org [ Rename 'index' to 'idx', as this breaks the build in rhel5, 6 and other systems where this is used by glibc headers ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf c2c: Use mem_info refcnt logicJiri Olsa
Switch to refcnt logic instead of duplicating mem_info objects. No functional change, just saving some memory. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180307155020.32613-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf tools: Add refcnt into struct mem_infoJiri Olsa
It's passed along several hists entries in --hierarchy mode, so it's better we keep track of it. The current fail I see is that it gets removed in hierarchy --mem-mode mode, where it's shared in the different hierarchies, but removed from the template hist entry, so the report crashes. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180307155020.32613-6-jolsa@kernel.org [ Rename mem_info__aloc() to mem_info__new(), to fix the typo and use the convention for constructors ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf record: Remove progname from struct recordJiri Olsa
It's no longer used. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180307155020.32613-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf record: Move machine variable down the functionJiri Olsa
It's used far more down to be declared on the top of the __cmd_record. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180307155020.32613-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf report: Display perf.data header infoJiri Olsa
Display more header info from perf.data file, following values: $ perf report -i perf.data --header-only ... # header version : 1 # data offset : 424 # data size : 3364280 # feat offset : 3364704 It's handy for debuging. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180307155020.32613-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf report: Fix the output for stdio events listJiri Olsa
Changing the output header for reporting forced groups via --groups option on non grouped events, like: $ perf record -e 'cycles,instructions' $ perf report --stdio --group Before: # Samples: 24 of event 'anon group { cycles:u, instructions:u }' After: # Samples: 24 of events 'cycles:u, instructions:u' Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Fixes: ad52b8cb4886 ("perf report: Add support to display group output for non group events") Link: http://lkml.kernel.org/r/20180307155020.32613-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf annotate: Fix s390 target function disassemblyThomas Richter
'perf annotate' displays function call assembler instructions with a right arrow. Hitting enter on this line/instruction causes the browser to disassemble this target function and show it on the screen. On s390 this results in an error message 'The called function was not found.' The function call assembly line parsing does not handle the s390 bras and brasl instructions. Function call__parse expects the target as first operand: callq e9140 <__fxstat> S390 has a register number as first operand: brasl %r14,41d60 <abort> Therefore the target addresses on s390 are always zero which is an invalid address. Introduce a s390 specific call parsing function which skips the first operand on s390. Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180307134325.96106-1-tmricht@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt: Adjust overlap-checking to support sampling modeAdrian Hunter
Adjust overlap-checking to support sampling mode. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt: Remove a check for sampling modeAdrian Hunter
Intel PT code already has some preparation for AUX area sampling mode. However the implementation has changed from the first proposal and one of the side-effects is that it will not be impossible to support snapshot mode and sampling mode at the same time. Although there are no plans to support it, let validation (not yet implemented) control whether it is allowed rather than low-level functions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-9-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt: Tidy old_buffer handling in intel_pt_get_trace()Adrian Hunter
intel_pt_get_trace() fixes overlaps between the current buffer and the previous buffer ('old_buffer'). However the previous buffer might not have had usable data (no PSB) so the comparison must be made against the previous buffer that had usable data. Tidy that by keeping a pointer for that purpose in struct intel_pt_queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt: Get rid of intel_pt_use_buffer_pid_tid()Adrian Hunter
With the new way sampling support will be implemented, intel_pt_use_buffer_pid_tid() will not be needed. Get rid of it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt/bts: In auxtrace_record__init_intel() evlist is never NULLAdrian Hunter
Tidy auxtrace_record__init_intel() slightly by recognizing that evlist is never NULL. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520431349-30689-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt: Fix timestamp following overflowAdrian Hunter
timestamp_insn_cnt is used to estimate the timestamp based on the number of instructions since the last known timestamp. If the estimate is not accurate enough decoding might not be correctly synchronized with side-band events causing more trace errors. However there are always timestamps following an overflow, so the estimate is not needed and can indeed result in more errors. Suppress the estimate by setting timestamp_insn_cnt to zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt: Fix error recovery from missing TIP packetAdrian Hunter
When a TIP packet is expected but there is a different packet, it is an error. However the unexpected packet might be something important like a TSC packet, so after the error, it is necessary to continue from there, rather than the next packet. That is achieved by setting pkt_step to zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt: Fix sync_switchAdrian Hunter
sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. The flag when sync_switch is enabled was global to the decoding, whereas it is really specific to the CPU. The trace data for different CPUs is put on different queues, so add sync_switch to the intel_pt_queue structure and use that in preference to the global setting in the intel_pt structure. That fixes problems decoding one CPU's trace because sync_switch was disabled on a different CPU's queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf intel-pt: Fix overlap detection to identify consecutive buffers correctlyAdrian Hunter
Overlap detection was not not updating the buffer's 'consecutive' flag. Marking buffers consecutive has the advantage that decoding begins from the start of the buffer instead of the first PSB. Fix overlap detection to identify consecutive buffers correctly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1520431349-30689-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf mmap: Simplify perf_mmap__read_init()Kan Liang
It isn't necessary to pass the 'start', 'end' and 'overwrite' arguments to perf_mmap__read_init(). The data is stored in the struct perf_mmap. Discard the parameters. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1520350567-80082-8-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf mmap: Simplify perf_mmap__read_event()Kan Liang
It isn't necessary to pass the 'overwrite', 'start' and 'end' argument to perf_mmap__read_event(). Discard them. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1520350567-80082-7-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf mmap: Simplify perf_mmap__consume()Kan Liang
It isn't necessary to pass the 'overwrite' argument to perf_mmap__consume(). Discard it. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1520350567-80082-6-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf mmap: Use stored 'overwrite' in perf_mmap__consume()Kan Liang
The 'overwrite' is set at allocation. It will not be changed. Using it to replace the parameter of perf_mmap__consume(). The parameters will be discarded later. No functional change. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1520350567-80082-5-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf mmap: Use the stored data in perf_mmap__read_event()Kan Liang
Using the 'start', 'end' and 'overwrite' which are stored in struct perf_mmap to replace the parameters of perf_mmap__read_event(). The parameters will be discarded later. No functional change. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1520350567-80082-4-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf mmap: Use the stored scope data in perf_mmap__push()Kan Liang
Using the 'start' and 'end' which are stored in struct perf_mmap to replace the temporary 'start' and 'end'. The temporary variables will be discarded later. It doesn't need to pass 'overwrite' to perf_mmap__push(). It's stored in struct perf_mmap. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1520350567-80082-3-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf mmap: Store mmap scope in struct perf_mmap()Kan Liang
There is too much boilerplate in the perf_mmap__read*() interfaces. The 'start' and 'end' variables should be stored in struct perf_mmap at initialization. They will be used later. The old 'startp' and 'endp' pointers are used by perf_mmap__read_event() now. They cannot be removed. So the old 'startp/endp' and new 'md->start/md->end' will exist simultaneously now. The old one will be removed later. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1520350567-80082-2-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf evlist: Store 'overwrite' in struct perf_mmapKan Liang
It has been determined that the map is for overwrite mode (evlist->overwrite_mmap) or non-overwrite mode (evlist->mmap) when calling perf_evlist__alloc_mmap(). Store the information in struct perf_mmap, which will be used later to simplify the perf_mmap__read*() interfaces. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Suggested-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1520350567-80082-1-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf pmu: Auto-merge PMU events created by prefix or glob matchAgustin Vega-Frias
Auto-merge for these events was disabled when auto-merging of non-alias events was disabled in commit 63ce844 (perf stat: Only auto-merge events that are PMU aliases). Non-merging of legacy events is preserved: $ perf stat -ag -e cache-misses,cache-misses sleep 1 Performance counter stats for 'system wide': 86,323 cache-misses 86,323 cache-misses 1.002623307 seconds time elapsed But prefix or glob matching auto-merges the events created: $ perf stat -a -e l3cache/read-miss/ sleep 1 Performance counter stats for 'system wide': 328 l3cache/read-miss/ 1.002627008 seconds time elapsed $ perf stat -a -e l3cache_0_[01]/read-miss/ sleep 1 Performance counter stats for 'system wide': 172 l3cache/read-miss/ 1.002627008 seconds time elapsed As with events created with aliases, auto-merging can be suppressed with the --no-merge option: $ perf stat -a -e l3cache/read-miss/ --no-merge sleep 1 Performance counter stats for 'system wide': 67 l3cache/read-miss/ 67 l3cache/read-miss/ 63 l3cache/read-miss/ 60 l3cache/read-miss/ 1.002622192 seconds time elapsed Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Timur Tabi <timur@codeaurora.org> Cc: linux-arm-kernel@lists.infradead.org Change-Id: I0a47eed54c05e1982ca964d743b37f50f60c508c Link: http://lkml.kernel.org/r/1520345084-42646-4-git-send-email-agustinv@codeaurora.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf pmu: Display pmu name when printing unmerged events in statAgustin Vega-Frias
To simplify creation of events accross multiple instances of the same type of PMU stat supports two methods for creating multiple events from a single event specification: 1. A prefix or glob can be used in the PMU name. 2. Aliases, which are listed immediately after the Kernel PMU events by perf list, are used. When the --no-merge option is passed and these events are displayed individually the PMU name is lost and it's not possible to see which count corresponds to which pmu: $ perf stat -a -e l3cache/read-miss/ --no-merge ls > /dev/null Performance counter stats for 'system wide': 67 l3cache/read-miss/ 67 l3cache/read-miss/ 63 l3cache/read-miss/ 60 l3cache/read-miss/ 0.001675706 seconds time elapsed $ perf stat -a -e l3cache_read_miss --no-merge ls > /dev/null Performance counter stats for 'system wide': 12 l3cache_read_miss 17 l3cache_read_miss 10 l3cache_read_miss 8 l3cache_read_miss 0.001661305 seconds time elapsed This change adds the original pmu name to the event. For dynamic pmu events the pmu name is restored in the event name: $ perf stat -a -e l3cache/read-miss/ --no-merge ls > /dev/null Performance counter stats for 'system wide': 63 l3cache_0_3/read-miss/ 74 l3cache_0_1/read-miss/ 64 l3cache_0_2/read-miss/ 74 l3cache_0_0/read-miss/ 0.001675706 seconds time elapsed For alias events the name is added after the event name: $ perf stat -a -e l3cache_read_miss --no-merge ls > /dev/null Performance counter stats for 'system wide': 10 l3cache_read_miss [l3cache_0_3] 12 l3cache_read_miss [l3cache_0_1] 10 l3cache_read_miss [l3cache_0_2] 17 l3cache_read_miss [l3cache_0_0] 0.001661305 seconds time elapsed Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Timur Tabi <timur@codeaurora.org> Cc: linux-arm-kernel@lists.infradead.org Change-Id: I8056b9eda74bda33e95065056167ad96e97cb1fb Link: http://lkml.kernel.org/r/1520345084-42646-3-git-send-email-agustinv@codeaurora.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-08perf pmu: Support wildcards on pmu name in dynamic pmu eventsAgustin Vega-Frias
Starting on v4.12 event parsing code for dynamic pmu events already supports prefix-based matching of multiple pmus when creating dynamic events. E.g., in a system with the following dynamic pmus: mypmu_0 mypmu_1 mypmu_2 mypmu_4 passing mypmu/<config>/ as an event spec will result in the creation of the event in all of the pmus. This change expands this matching through the use of fnmatch so glob-like expressions can be used to create events in multiple pmus. E.g., in the system described above if a user only wants to create the event in mypmu_0 and mypmu_1, mypmu_[01]/<config>/ can be passed. Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Timur Tabi <timur@codeaurora.org> Change-Id: Icb25653fc5d5239c20f3bffdfdf4ab4c9c9bb20b Link: http://lkml.kernel.org/r/1520454947-16977-1-git-send-email-agustinv@codeaurora.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07Merge tag 'metag_remove_2' of ↵Arnd Bergmann
ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jhogan/metag into asm-generic Remove metag architecture These patches remove the metag architecture and tightly dependent drivers from the kernel. With the 4.16 kernel the ancient gcc 4.2.4 based metag toolchain we have been using is hitting compiler bugs, so now seems a good time to drop it altogether. * tag 'metag_remove_2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: i2c: img-scb: Drop METAG dependency media: img-ir: Drop METAG dependency watchdog: imgpdc: Drop METAG dependency MAINTAINERS/CREDITS: Drop METAG ARCHITECTURE tty: Remove metag DA TTY and console driver clocksource: Remove metag generic timer driver irqchip: Remove metag irqchip drivers Drop a bunch of metag references docs: Remove remaining references to metag docs: Remove metag docs metag: Remove arch/metag/ Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-07perf tools: Correct title markers for asciidoctorTakashi Iwai
I've tested to process the perf man pages with asciidoctor that is picker than asciidoc, and it revealed minor syntax errors in some documents. Namely, the title markers aren't aligned with the previous line, hence asciidoctor didn't recognize as titles. This patch corrects these markers to be processed properly. Signed-off-by: Takashi Iwai <tiwai@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180307105441.28512-1-tiwai@suse.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf auxtrace: Make auxtrace_queues__add_buffer() return buffer_ptrAdrian Hunter
In preparation for supporting AUX area sampling buffers, auxtrace_queues__add_buffer() needs to be more generic. To that end, make it return buffer_ptr instead of the caller. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520327598-1317-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf auxtrace: Rename some buffer-queuing functionsAdrian Hunter
Rename some buffer-queuing functions in preparation for supporting AUX area sampling buffers. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520327598-1317-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf auxtrace: Add missing parameters from kernel-doc commentsAdrian Hunter
Add missing parameters from kernel-doc comments. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520327598-1317-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf trace: Support setting cgroups as targetsArnaldo Carvalho de Melo
One can set a cgroup as a default cgroup to be used by all events or set cgroups with the 'perf stat' and 'perf record' behaviour, i.e. '-G A' will be the cgroup for events defined so far in the command line. Here in my main machine, with a kvm instance running a rhel6 guinea pig I have: # ls -la /sys/fs/cgroup/perf_event/ | grep drw drwxr-xr-x. 14 root root 360 Mar 6 12:04 .. drwxr-xr-x. 3 root root 0 Mar 6 15:05 machine.slice # So I can go ahead and use that cgroup hierarchy, say lets see what syscalls are being emitted by threads in that 'machine.slice' hierarchy that are taking more than 100ms: # perf trace --duration 100 -G machine.slice 0.188 (249.850 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 250.274 (249.743 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 500.224 (249.755 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 750.097 (249.934 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 1000.244 (249.780 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 1250.197 (249.796 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 1500.124 (249.859 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 1750.076 (172.900 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 902.570 (1021.116 ms): qemu-system-x8/23667 ppoll(ufds: 0x558151e03180, nfds: 74, tsp: 0x7ffc00cd0900, sigsetsize: 8) = 1 1923.825 (305.133 ms): qemu-system-x8/23667 ppoll(ufds: 0x558151e03180, nfds: 74, tsp: 0x7ffc00cd0900, sigsetsize: 8) = 1 2000.172 (229.002 ms): CPU 0/KVM/23744 ioctl(fd: 16<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 ^C # If we look inside that cgroup hierarchy we get: # ls -la /sys/fs/cgroup/perf_event/machine.slice/ | grep drw drwxr-xr-x. 3 root root 0 Mar 6 15:05 . drwxr-xr-x. 2 root root 0 Mar 6 16:16 machine-qemu\x2d2\x2drhel6.sandy.scope # There is just one, but lets say there were more and we would want to see 5 seconds worth of syscall summary for the threads in that cgroup: # perf trace --summary -G machine.slice/machine-qemu\\x2d2\\x2drhel6.sandy.scope/ -a sleep 5 Summary of events: qemu-system-x86 (23667), 143858 events, 24.2% syscall calls total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- --------- --------- --------- --------- ------ ppoll 28492 4348.631 0.000 0.153 11.616 1.05% futex 19661 140.801 0.001 0.007 2.993 3.20% read 18440 68.084 0.001 0.004 1.653 4.33% ioctl 5387 24.768 0.002 0.005 0.134 1.62% CPU 0/KVM (23744), 449455 events, 75.8% syscall calls total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- --------- --------- --------- --------- ------ ioctl 148364 3401.812 0.000 0.023 11.801 1.15% futex 36131 404.127 0.001 0.011 7.377 2.63% writev 29452 339.688 0.003 0.012 1.740 1.36% write 11315 45.992 0.001 0.004 0.105 1.10% # See the documentation about how to set more than one cgroup for different events in the same command line. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-t126jh4occqvu0xdqlcjygex@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Make the cgroup name be const char *Arnaldo Carvalho de Melo
The usual thing is for a constructor to allocate space for its members, not to require that the caller pass a pre-allocated 'name' and then, at its destructor, to free something not allocated by it. Fix it by making cgroup__new() to receive a const char pointer, then allocate cgroup->name that then can continue to be freed at cgroup__delete(), balancing the alloc/free operations inside the cgroup struct methods. This eases calling evlist__findnew_cgroup() from the custom 'perf trace' cgroup parser, that will only call parse_cgroups() when the '-G cgroup' is passed on the command line after '-e event' entries, when it'll behave just like 'perf stat' and 'perf record', i.e. the previous parse_cgroup() users that mandate that -G only can come after a -e. 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-4leugnuyqi10t98990o3xi1t@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Add evlist__add_default_cgroup()Arnaldo Carvalho de Melo
So that tools like 'perf trace' can allow the user to set a cgroup to be used for all the evsels still without a crgroup setup by parse_cgroups(), such as the one to use for the syscalls, vfs_getname and other events involved in strace like syscall tracing. 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-zf9jjsbj661r3lk6qb7g8j70@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Add evlist__findnew_cgroup()Arnaldo Carvalho de Melo
Similar to machine__findnew_thread(), etc, i.e. try to find, get a refcount if found and return it, otherwise return a new cgroup object. 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-im1omevlihhyneiic4nl3g24@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf record: Combine some auxtrace initialization into a single functionAdrian Hunter
In preparation for adding AUX area sampling support, combine some auxtrace initialization into a single function. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1520327598-1317-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf sched map: Re-annotate shortname if thread comm changedChangbin Du
This is to show the real name of thread that created via fork-exec. See below example for shortname *A0*. $ sudo ./perf sched map *A0 80393.050639 secs A0 => perf:22368 *. A0 80393.050748 secs . => swapper:0 . *. 80393.050887 secs *B0 . . 80393.052735 secs B0 => rcu_sched:8 *. . . 80393.052743 secs . *C0 . 80393.056264 secs C0 => kworker/2:1H:287 . *A0 . 80393.056270 secs . *D0 . 80393.056769 secs D0 => ksoftirqd/2:22 - . *A0 . 80393.056804 secs + . *A0 . 80393.056804 secs A0 => pi:22368 . *. . 80393.056854 secs *B0 . . 80393.060727 secs ... Signed-off-by: Changbin Du <changbin.du@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1520307457-23668-3-git-send-email-changbin.du@intel.com [ Optimally pack struct thread_runtime when adding the new bool member ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf sched: Move thread::shortname to thread_runtimeChangbin Du
The thread::shortname only used by sched command, so move it to sched private structure. Signed-off-by: Changbin Du <changbin.du@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1520307457-23668-2-git-send-email-changbin.du@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Introduce cgroup__new() out of open coded equivalentArnaldo Carvalho de Melo
To follow the namespacing convention in tools/perf. 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-jaalyl6bkvvji4r5u8wqw4n4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Introduce find_cgroup() methodArnaldo Carvalho de Melo
To break down complexity in add_cgroup(). 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-5yqshcf5hm837n7c86u7lhjf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Introduce cgroup__get()Arnaldo Carvalho de Melo
The refcount operation counterpart to cgroup__put(), use it when reusing a cgroup. 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-14ynvrl7y2cz8gyuy5q5v41g@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Rename close_cgroup() to cgroup__put()Arnaldo Carvalho de Melo
It is not really closing the cgroup, but instead dropping a reference count and if it hits zero, then calling delete, which will, among other cleanup shores, close the cgroup fd. So it is really dropping a reference to that cgroup, and the method name for that is "put", so rename close_cgroup() to cgroup__put() to follow this naming convention. 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-sccxpnd7bgwc1llgokt6fcey@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Introduce cgroup__delete()Arnaldo Carvalho de Melo
Just to make this code look more like other places in tools/perf. 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-j3j72vvn2d5j7tenlghdy195@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Rename 'struct cgroup_sel' to 'struct cgroup'Arnaldo Carvalho de Melo
That name isn't used, is shorter, lets switch to it. 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-e51yphwgvepd1y4f5fjptmjq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-03-07perf cgroup: Remove misplaced __maybe_unusedArnaldo Carvalho de Melo
The 'opt' parameter in parse_cgroups() _is_ used. The original patch used '__used' that was even more confusing :-) 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 023695d96ee0 ("perf tool: Add cgroup support") Link: https://lkml.kernel.org/n/tip-4jo2puz0empkoou6bbq460tl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>