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* perf annotate: Resolve 'call' operands to function namesArnaldo Carvalho de Melo2016-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before this patch the '_raw_spin_lock_irqsave' and 'update_rq_clock' operands were appearing just as hexadecimal numbers: update_blocked_averages /proc/kcore │ push %r12 │ push %rbx │ and $0xfffffffffffffff0,%rsp │ sub $0x40,%rsp │ add -0x662cac00(,%rdi,8),%rax │ mov %rax,%rbx │ mov %rax,%rdi │ mov %rax,0x38(%rsp) │ → callq _raw_spin_lock_irqsave │ mov %rbx,%rdi │ mov %rax,0x30(%rsp) │ → callq update_rq_clock │ mov 0x8d0(%rbx),%rax │ lea 0x8d0(%rbx),%r11 To check that all is right one can always use the 'o' hotkey and see the original objdump -dS output, that for this case is: update_blocked_averages /proc/kcore │ffffffff990d5489: push %r12 │ffffffff990d548b: push %rbx │ffffffff990d548c: and $0xfffffffffffffff0,%rsp │ffffffff990d5490: sub $0x40,%rsp │ffffffff990d5494: add -0x662cac00(,%rdi,8),%rax │ffffffff990d549c: mov %rax,%rbx │ffffffff990d549f: mov %rax,%rdi │ffffffff990d54a2: mov %rax,0x38(%rsp) │ffffffff990d54a7: → callq 0xffffffff997eb7a0 │ffffffff990d54ac: mov %rbx,%rdi │ffffffff990d54af: mov %rax,0x30(%rsp) │ffffffff990d54b4: → callq 0xffffffff990c7720 │ffffffff990d54b9: mov 0x8d0(%rbx),%rax │ffffffff990d54c0: lea 0x8d0(%rbx),%r11 Use the 'h' hotkey to see a list of available hotkeys. More work needed to cover operands for other instructions, such as 'mov', that can resolve variable names, etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Chris Riyder <chris.ryder@arm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-xqgtw9mzmzcjgwkis9kiiv1p@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Pass the symbol's map/dso to the instruction parsersArnaldo Carvalho de Melo2016-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So that things like: → callq 0xffffffff993e3230 found while disassembling /proc/kcore can be beautified by later patches, that will resolve that address to a function, looking it up in /proc/kallsyms. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Chris Riyder <chris.ryder@arm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-p76myuke4j7gplg54amaklxk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Do not ignore call instruction with indirect targetRavi Bangoria2016-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not ignore call instruction with indirect target when its already identified as a call. This is an extension of commit e8ea1561952b ("perf annotate: Use raw form for register indirect call instructions") to generalize annotation for all instructions with indirect calls. This is needed for certain powerpc call instructions that use address in a register (such as bctrl, btarl, ...). Apart from that, when kcore is used to disassemble function, all call instructions were ignored. This patch will fix it as a side effect by not ignoring them. For example, Before (with kcore): mov %r13,%rdi callq 0xffffffff811a7e70 ^ jmpq 64 mov %gs:0x7ef41a6e(%rip),%al After (with kcore): mov %r13,%rdi > callq 0xffffffff811a7e70 ^ jmpq 64 mov %gs:0x7ef41a6e(%rip),%al Suggested-by: Michael Ellerman <mpe@ellerman.id.au> [Suggested about 'bctrl' instruction] Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Chris Riyder <chris.ryder@arm.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Taeung Song <treeze.taeung@gmail.com> Link: http://lkml.kernel.org/r/1471611578-11255-5-git-send-email-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Add branch stack / basic blockPeter Zijlstra2016-09-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I wanted to know the hottest path through a function and figured the branch-stack (LBR) information should be able to help out with that. The below uses the branch-stack to create basic blocks and generate statistics from them. from to branch_i * ----> * | | block v * ----> * from to branch_i+1 The blocks are broken down into non-overlapping ranges, while tracking if the start of each range is an entry point and/or the end of a range is a branch. Each block iterates all ranges it covers (while splitting where required to exactly match the block) and increments the 'coverage' count. For the range including the branch we increment the taken counter, as well as the pred counter if flags.predicted. Using these number we can find if an instruction: - had coverage; given by: br->coverage / br->sym->max_coverage This metric ensures each symbol has a 100% spot, which reflects the observation that each symbol must have a most covered/hottest block. - is a branch target: br->is_target && br->start == add - for targets, how much of a branch's coverages comes from it: target->entry / branch->coverage - is a branch: br->is_branch && br->end == addr - for branches, how often it was taken: br->taken / br->coverage after all, all execution that didn't take the branch would have incremented the coverage and continued onward to a later branch. - for branches, how often it was predicted: br->pred / br->taken The coverage percentage is used to color the address and asm sections; for low (<1%) coverage we use NORMAL (uncolored), indicating that these instructions are not 'important'. For high coverage (>75%) we color the address RED. For each branch, we add an asm comment after the instruction with information on how often it was taken and predicted. Output looks like (sans color, which does loose a lot of the information :/) $ perf record --branch-filter u,any -e cycles:p ./branches 27 $ perf annotate branches Percent | Source code & Disassembly of branches for cycles:pu (217 samples) --------------------------------------------------------------------------------- : branches(): 0.00 : 40057a: push %rbp 0.00 : 40057b: mov %rsp,%rbp 0.00 : 40057e: sub $0x20,%rsp 0.00 : 400582: mov %rdi,-0x18(%rbp) 0.00 : 400586: mov %rsi,-0x20(%rbp) 0.00 : 40058a: mov -0x18(%rbp),%rax 0.00 : 40058e: mov %rax,-0x10(%rbp) 0.00 : 400592: movq $0x0,-0x8(%rbp) 0.00 : 40059a: jmpq 400656 <branches+0xdc> 1.84 : 40059f: mov -0x10(%rbp),%rax # +100.00% 3.23 : 4005a3: and $0x1,%eax 1.84 : 4005a6: test %rax,%rax 0.00 : 4005a9: je 4005bf <branches+0x45> # -54.50% (p:42.00%) 0.46 : 4005ab: mov 0x200bbe(%rip),%rax # 601170 <acc> 12.90 : 4005b2: add $0x1,%rax 2.30 : 4005b6: mov %rax,0x200bb3(%rip) # 601170 <acc> 0.46 : 4005bd: jmp 4005d1 <branches+0x57> # -100.00% (p:100.00%) 0.92 : 4005bf: mov 0x200baa(%rip),%rax # 601170 <acc> # +49.54% 13.82 : 4005c6: sub $0x1,%rax 0.46 : 4005ca: mov %rax,0x200b9f(%rip) # 601170 <acc> 2.30 : 4005d1: mov -0x10(%rbp),%rax # +50.46% 0.46 : 4005d5: mov %rax,%rdi 0.46 : 4005d8: callq 400526 <lfsr> # -100.00% (p:100.00%) 0.00 : 4005dd: mov %rax,-0x10(%rbp) # +100.00% 0.92 : 4005e1: mov -0x18(%rbp),%rax 0.00 : 4005e5: and $0x1,%eax 0.00 : 4005e8: test %rax,%rax 0.00 : 4005eb: je 4005ff <branches+0x85> # -100.00% (p:100.00%) 0.00 : 4005ed: mov 0x200b7c(%rip),%rax # 601170 <acc> 0.00 : 4005f4: shr $0x2,%rax 0.00 : 4005f8: mov %rax,0x200b71(%rip) # 601170 <acc> 0.00 : 4005ff: mov -0x10(%rbp),%rax # +100.00% 7.37 : 400603: and $0x1,%eax 3.69 : 400606: test %rax,%rax 0.00 : 400609: jne 400612 <branches+0x98> # -59.25% (p:42.99%) 1.84 : 40060b: mov $0x1,%eax 14.29 : 400610: jmp 400617 <branches+0x9d> # -100.00% (p:100.00%) 1.38 : 400612: mov $0x0,%eax # +57.65% 10.14 : 400617: test %al,%al # +42.35% 0.00 : 400619: je 40062f <branches+0xb5> # -57.65% (p:100.00%) 0.46 : 40061b: mov 0x200b4e(%rip),%rax # 601170 <acc> 2.76 : 400622: sub $0x1,%rax 0.00 : 400626: mov %rax,0x200b43(%rip) # 601170 <acc> 0.46 : 40062d: jmp 400641 <branches+0xc7> # -100.00% (p:100.00%) 0.92 : 40062f: mov 0x200b3a(%rip),%rax # 601170 <acc> # +56.13% 2.30 : 400636: add $0x1,%rax 0.92 : 40063a: mov %rax,0x200b2f(%rip) # 601170 <acc> 0.92 : 400641: mov -0x10(%rbp),%rax # +43.87% 2.30 : 400645: mov %rax,%rdi 0.00 : 400648: callq 400526 <lfsr> # -100.00% (p:100.00%) 0.00 : 40064d: mov %rax,-0x10(%rbp) # +100.00% 1.84 : 400651: addq $0x1,-0x8(%rbp) 0.92 : 400656: mov -0x8(%rbp),%rax 5.07 : 40065a: cmp -0x20(%rbp),%rax 0.00 : 40065e: jb 40059f <branches+0x25> # -100.00% (p:100.00%) 0.00 : 400664: nop 0.00 : 400665: leaveq 0.00 : 400666: retq (Note: the --branch-filter u,any was used to avoid spurious target and branch points due to interrupts/faults, they show up as very small -/+ annotations on 'weird' locations) Committer note: Please take a look at: http://vger.kernel.org/~acme/perf/annotate_basic_blocks.png To see the colors. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: David Carrillo-Cisneros <davidcc@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> [ Moved sym->max_coverage to 'struct annotate', aka symbol__annotate(sym) ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf symbols: Remove symbol_filter_t machineryArnaldo Carvalho de Melo2016-09-05
| | | | | | | | | | | | | | We're not using it anymore, few users were, but we really could do without it, simplify lots of functions by removing it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-1zng8wdznn00iiz08bb7q3vn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Initialize the priv are in symbol__new()Arnaldo Carvalho de Melo2016-08-30
| | | | | | | | | | | | | | | | | We need to initializa some fields (right now just a mutex) when we allocate the per symbol annotation struct, so do it at the symbol constructor instead of (ab)using the filter mechanism for that. This way we remove one of the few cases we have for that symbol filter, which will eventually led to removing 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: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-cvz34avlz1lez888lob95390@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf disassemble: Extract logic to find file to pass to objdump to a ↵Arnaldo Carvalho de Melo2016-08-23
| | | | | | | | | | | | | | separate function Disentangling this a bit further, more to come. 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-7bjv2xazuyzs0xw01mlwosn5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf disassemble: Simplify logic for picking the filename to disassembleArnaldo Carvalho de Melo2016-08-23
| | | | | | | | | | | | | Lots of changes to support kcore, compressed modules, build-id files left us with some spaguetti code, simplify it a bit, more to come. 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-h70p7x451li3f2fhs44vzmm8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf disassemble: Move check for kallsyms + !kcoreArnaldo Carvalho de Melo2016-08-23
| | | | | | | | | | | | | We don't need to do all that filename logic to then just have to test something unrelated and bail out, move it to the start of the function. 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-lk1v4srtsktonnyp6t1o0uhx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Plug filename string leakArnaldo Carvalho de Melo2016-08-01
| | | | | | | | | | | | | | | | | | | | If dso__build_id_filename(..., NULL, ...) returns !NULL its because it allocated it, so, when reaching the 'if (dso__is_kcore()) test, we already checked that and were just "fallbacking" to using dso->long_name, but without freeing filename, thus leaking it. Fix it by adding the dso__is_kcore() test to the 'or' group just after it, the one containing the full fallback code, including freeing the filename. 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: ee205503f233 ("perf tools: Fix annotation with kcore") Link: http://lkml.kernel.org/n/tip-qi4rpjq8yo6myvg99kkgt0xz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Introduce strerror for handling symbol__disassemble() errorsArnaldo Carvalho de Melo2016-08-01
| | | | | | | | | | | | | | | | | | | | We were just using pr_error() which makes it difficult for non stdio UIs to provide errors using its widgets, as they need to somehow catch what was passed to pr_error(). Fix it by introducing a __strerror() interface like the ones used elsewhere, for instance target__strerror(). This is just the initial step, more work will be done, but first some error handling bugs noticed while working on this need to be dealt with. 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-dgd22zl2xg7x4vcnoa83jxfb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Rename symbol__annotate() to symbol__disassemble()Arnaldo Carvalho de Melo2016-08-01
| | | | | | | | | | | | | | | | | This function will not annotate anything, it will just disassembly the given map->dso and symbol. It currently does this by parsing the output of 'objdump --disassemble', but this could conceivably be done using a library or an offshot of the kernel's instruction decoder (arch/x86/lib/inat.c), etc. 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-2xpfl4bfnrd6x584b390qok7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Use pipe + fork instead of popenArnaldo Carvalho de Melo2016-07-29
| | | | | | | | | | | | | We will need to redirect the stderr as well, so open code popen as a starting point. 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-k0zt9svg4bswiglem7ornts4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Add number of samples to the headerPeter Zijlstra (Intel)2016-06-30
| | | | | | | | | | | | | | | | | | | | | Staring at annotations of large functions is useless if there's only a few samples in them. Report the number of samples in the header to make this easier to determine. Committer note: The change amounts to: - Percent | Source code & Disassembly of perf-vdso.so for cycles:u ------------------------------------------------------------------ + Percent | Source code & Disassembly of perf-vdso.so for cycles:u (3278 samples) +-------------------------------------------------------------------------------- Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20160630082955.GA30921@twins.programming.kicks-ass.net [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Simplify header dotted line sizingPeter Zijlstra (Intel)2016-06-30
| | | | | | | | | | | No need to use strlen, etc to figure that out, just use the return from printf(), it will tell how wide the following line needs to be. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20160630082955.GA30921@twins.programming.kicks-ass.net [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Generalize handling of 'ret' instructionsNaveen N. Rao2016-06-27
| | | | | | | | | | | | | | Introduce helper to detect 'ret' instructions and use the same in the TUI. A helper is needed since some architectures such as powerpc have more than one return instruction. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anton Blanchard <anton@ozlabs.org> Cc: Daniel Axtens <dja@axtens.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Link: http://lkml.kernel.org/r/1466769240-12376-5-git-send-email-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Remove unused hist_entry__annotate functionRavi Bangoria2016-06-27
| | | | | | | | | | | | | hist_entry__annotate looks part of API but I don't find any caller of this function. Removing it. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anton Blanchard <anton@ozlabs.org> Cc: Daniel Axtens <dja@axtens.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Link: http://lkml.kernel.org/r/1466769240-12376-2-git-send-email-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Sort list of recognised instructionsChris Ryder2016-05-20
| | | | | | | | | | | | | | | | Currently the list of instructions recognised by perf annotate has to be explicitly written in sorted order. This makes it easy to make mistakes when adding new instructions. Sort the list of instructions on first access. Signed-off-by: Chris Ryder <chris.ryder@arm.com> Acked-by: Pawel Moll <pawel.moll@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/4268febaf32f47f322c166fb2fe98cfec7041e11.1463676839.git.chris.ryder@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Fix identification of ARM blt and bls instructionsChris Ryder2016-05-20
| | | | | | | | | | | | | | | The ARM blt and bls instructions are not correctly identified when parsing assembly because the list of recognised instructions must be sorted by name. Swap the ordering of blt and bls. Signed-off-by: Chris Ryder <chris.ryder@arm.com> Acked-by: Pawel Moll <pawel.moll@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/560e196b7c79b7ff853caae13d8719a31479cb1a.1463676839.git.chris.ryder@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf symbols: Introduce DSO__NAME_KALLSYMS and DSO__NAME_KCOREMasami Hiramatsu2016-05-16
| | | | | | | | | | | | | | Instead of using a raw string, use DSO__NAME_KALLSYMS and DSO__NAME_KCORE macros for kallsyms and kcore. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160515031935.4017.50971.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Use SBUILD_ID_SIZE where applicableMasami Hiramatsu2016-05-11
| | | | | | | | | | | | | | | Use the existing SBUILD_ID_SIZE macro instead of the equivalent BUILD_ID_SIZE * 2 + 1 expression for allocating a buffer for build-id strings. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160511135159.23943.57120.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf hists: Move sort__has_sym into struct perf_hpp_listJiri Olsa2016-05-05
| | | | | | | | | | | | | | Now we have sort dimensions private for struct hists, we need to make dimension booleans hists specific as well. Moving sort__has_sym into struct perf_hpp_list. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1462276488-26683-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: ARM supportRussell King2015-12-07
| | | | | | | | | | | | | | | | | | | | | | Add basic support to parse ARM assembly. This: * enables perf to correctly show the disassembly, rather than chopping some constants off at the '#' (which is not a comment character on ARM). * allows perf to identify ARM instructions that branch to other parts within the same function, thereby properly annotating them. * allows perf to identify function calls, allowing called functions to be followed in the annotated view. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/n/tip-owp1uj0nmcgfrlppfyeetuyf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Support full source file paths for srcline fixMichael Petlan2015-11-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The --full-paths option did not show the full source file paths in the 'perf annotate' tool, because the value of the option was not propagated into the related functions. With this patch the value of the --full-paths option is known to the function that composes the srcline string, so it prints the full path when necessary. Committer Note: This affects annotate when the --print-line option is used: # perf annotate -h 2>&1 | grep print-line -l, --print-line print matching source lines (may be slow) Looking just at the lines that should be affected by this change: Before: # perf annotate --print-line --full-paths --stdio fput | grep '\.[ch]:[0-9]\+' 94.44 atomic64_64.h:114 5.56 file_table.c:265 file_table.c:265 5.56 : ffffffff81219a00: callq ffffffff81769360 <__fentry__> atomic64_64.h:114 94.44 : ffffffff81219a05: lock decq 0x38(%rdi) After: # perf annotate --print-line --full-paths --stdio fput | grep '\.[ch]:[0-9]\+' 94.44 /home/git/linux/arch/x86/include/asm/atomic64_64.h:114 5.56 /home/git/linux/fs/file_table.c:265 /home/git/linux/fs/file_table.c:265 5.56 : ffffffff81219a00: callq ffffffff81769360 <__fentry__> /home/git/linux/arch/x86/include/asm/atomic64_64.h:114 94.44 : ffffffff81219a05: lock decq 0x38(%rdi) # Signed-off-by: Michael Petlan <mpetlan@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: http://permalink.gmane.org/gmane.linux.kernel.perf.user/2365 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Inform the user about objdump failures in --stdioAndi Kleen2015-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the browser fails to annotate it is difficult for users to find out what went wrong. Add some errors for objdump failures that are displayed in the UI. Note it would be even better to handle these errors smarter, like falling back to the binary when the debug info is somehow corrupted. But for now just giving a better error is an improvement. Committer note: This works for --stdio, where errors just scroll by the screen: # perf annotate --stdio intel_idle Failure running objdump --start-address=0xffffffff81418290 --stop-address=0xffffffff814183ae -l -d --no-show-raw -S -C /root/.debug/.build-id/28/2777c262e6b3c0451375163c9a81c893218ab1 2>/dev/null|grep -v /root/.debug/.build-id/28/2777c262e6b3c0451375163c9a81c893218ab1|expand Percent | Source code & Disassembly of vmlinux for cycles:pp ------------------------------------------------------------------ And with that one can use that command line to try to find out more about what happened instead of getting a blank screen, an improvement. We need tho to improve this further to get it to work with other UIs, like --tui and --gtk, where it continues showing a blank screen, no messages, as the pr_err() used is enough just for --stdio. Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1446779167-18949-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Add debug message for out of bounds sampleArnaldo Carvalho de Melo2015-10-21
| | | | | | | | | | | | | Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-q0lde9ajs84oi38nlyjcqbwg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: /proc/kcore requires CAP_SYS_RAWIO message too noisyAdrian Hunter2015-08-21
| | | | | | | | | | | | | | | | | | | | | | The "/proc/kcore requires CAP_SYS_RAWIO" message comes up all the time for 'perf script' if vmlinux is not found and the user isn't root, even when the kernel is not being traced and even though the message is only really relevant for annotation. Change it to pr_debug and instead put a note in the message displayed if annotation is not possible. Also, the file being accessed might not be /proc/kcore. Tools can be directed to a different location using the --kallsyms option in which case kcore is expected to be in the same directory. Adjust the message so it is not misleading in that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Li Zhang <zhlcindy@linux.vnet.ibm.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1440065260-8802-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Fix 32-bit compilation error in util/annotate.cAdrian Hunter2015-08-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following 32-bit compilation errors: util/annotate.c: In function ‘addr_map_symbol__account_cycles’: util/annotate.c:643:3: error: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘u64’ [-Werror=format=] pr_debug2("BB with bad start: addr %lx start %lx sym %lx saddr %lx\n", ^ util/annotate.c:643:3: error: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 5 has type ‘u64’ [-Werror=format=] util/annotate.c:643:3: error: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 6 has type ‘u64’ [-Werror=format=] These were introduced by the patch: "perf report: Add infrastructure for a cycles histogram" Also change the 'saddr' variable from 'unsigned long' to 'u64' noting that theoretically we could be processing data captured on a 64-bit machine but processing it on a 32-bit machine. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Fixes: d4957633bf9d ("perf report: Add infrastructure for a cycles histogram") Link: http://lkml.kernel.org/r/1439536294-18241-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf report: Add infrastructure for a cycles histogramAndi Kleen2015-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | This adds the basic infrastructure to keep track of cycle counts per basic block for annotate. We allocate an array similar to the normal accounting, and then account branch cycles there. We handle two cases: cycles per basic block with start and cycles per branch (these are later used for either IPC or just cycles per BB) In the start case we cannot handle overlaps, so always the longest basic block wins. For the cycles per branch case everything is accurately accounted. v2: Remove unnecessary checks. Slight restructure. Move symbol__get_annotation to another patch. Move histogram allocation. v3: Merged with current tree Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1437233094-12844-4-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Rename source_line_percent to source_line_samplesArnaldo Carvalho de Melo2015-06-19
| | | | | | | | | | To better reflect the purpose of this struct, that is to hold info about samples, its total number and is percentage. Cc: Martin Liska <mliska@suse.cz> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/n/tip-6bf8gwcl975uurl0ttpvtk69@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Display total number of samples with --show-total-periodMartin Liška2015-06-19
| | | | | | | | | | | | | | To compare two records on an instruction base, with --show-total-period option provided, display total number of samples that belong to a line in assembly language. New hot key 't' is introduced for 'perf annotate' TUI. Signed-off-by: Martin Liska <mliska@suse.cz> Cc: Andi Kleen <andi@firstfloor.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/5583E26D.1040407@suse.cz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotation: Add symbol__get_annotationAndi Kleen2015-05-27
| | | | | | | | | | | | Add a new utility function to get an function annotation out of existing code. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1432749114-904-4-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'perf/urgent' into perf/core, to pick up fixes and to refresh ↵Ingo Molnar2015-03-27
|\ | | | | | | | | | | the tree Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * perf annotate: Fix fallback to unparsed disassembler lineArnaldo Carvalho de Melo2015-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When annotating source/disasm lines the perf tools parse the output of objdump, trying to provide augmented output that allows navigating jumps, calls, etc. But when a line output by objdump can't be parsed the annotation code falls back to just presenting the unparsed line. When fixing a leak in the 0fb9f2aab738 commit ("perf annotate: Fix memory leaks in LOCK handling") we failed to take that into account and instead tried to free one of the data structures that should be freed only when successfully allocated, oops, segfault. There was a change in the way the objdump output for lock prefixed instructions is formatted that lead the relevant parser to fail to grok it. At least RHEL7 works ok, but Fedora 20 segfaults. Fix it by making the ins__delete() destructor work like the most basic destructor: free(). Namely make it accept a NULL pointer and when handling it just do nothing. Further investigation is needed to figure out the nature of the objdump output change so as to make the parser grok it. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rabin Vincent <rabin@rab.in> Link: http://lkml.kernel.org/n/tip-7wsy0zo292pif0yjoqpfryrz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf annotate: Allow annotation for decompressed kernel modulesJiri Olsa2015-03-23
|/ | | | | | | | | | | | | | | | | | Decompressing kernel module file for objdump command if needed. Annotation commands now display annotation for compressed kernel modules. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-x4jcytk2d5qjmnjvb0w75q3f@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Remove EOL whitespacesArnaldo Carvalho de Melo2015-01-21
| | | | | | | | | | | | | | | | | | Janitorial stuff: boredom moment. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-u70i7shys3kths4hzru72bha@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Fix memory leaks in LOCK handlingRabin Vincent2015-01-21
| | | | | | | | | | The lock prefix handling fails to free the strdup()'d name as well as the fields allocated by the instruction parsing. Signed-off-by: Rabin Vincent <rabin@rab.in> Cc: Paul Mackerras <paulus@samba.org> Link: http://lkml.kernel.org/r/1421607621-15005-2-git-send-email-rabin@rab.in Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Handle ins parsing failuresRabin Vincent2015-01-21
| | | | | | | | | | | | | | | | | | Don't use the ins's ->sncprintf() if the parsing failed. For example, this fixes the display of "imul %edx". Without this patch: | imul (null),(null) After this patch: | imul %edx Signed-off-by: Rabin Vincent <rabin@rab.in> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1421607621-15005-1-git-send-email-rabin@rab.in Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf callchain: Make get_srcline fall back to sym+offsetAndi Kleen2014-11-24
| | | | | | | | | | | | | | | | When the source line is not found fall back to sym + offset. This is generally much more useful than a raw address. For this we need to pass in the symbol from the caller. For some callers it's awkward to compute, so we stay at the old behaviour. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1415844328-4884-10-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Support source line numbers in annotateAndi Kleen2014-11-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With srcline key/sort'ing it's useful to have line numbers in the annotate window. This patch implements this. Use objdump -l to request the line numbers and save them in the line structure. Then the browser displays them for source lines. The line numbers are not displayed by default, but can be toggled on with 'k' There is one unfortunate problem with this setup. For lines not containing source and which are outside functions objdump -l reports line numbers off by a few: it always reports the first line number in the next function even for lines that are outside the function. I haven't found a nice way to detect/correct this. Probably objdump has to be fixed. See https://sourceware.org/bugzilla/show_bug.cgi?id=16433 The line numbers are still useful even with these problems, as most are correct and the ones which are not are nearby. v2: Fix help text. Handle (discriminator...) output in objdump. Left align the line numbers. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1415844328-4884-9-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Fix annotation with kcoreAdrian Hunter2014-11-19
| | | | | | | | | | | | | | | | | | | | | Patch "perf tools: Fix build-id matching on vmlinux" breaks annotation with kcore. The problem is that symbol__annotate() first gets the filename based on the build-id which was previously not set. This patch provides a quick fix, however there should probably be only one way to determine the filename. e.g. symbol__annotate() should use the same way as dso__data_fd(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1415700294-30816-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf symbols: Make sym->end be the first address after the symbol rangeArnaldo Carvalho de Melo2014-10-14
| | | | | | | | | | | | | | | | | | | | | | | | To follow vm_area_struct->vm_end convention. By adhering to the convention that ->end is the first address outside the symbol's range we can do things like: sym->end = start + len; len = sym->end - sym->start; This is also now the convention used for struct map->end, fixing some off-by-one bugs. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Chuck Ebbert <cebbert.lkml@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-agomujr7tuqaq6lu7kr6z7h6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Don't truncate Intel style addressesAlex Converse2014-08-15
| | | | | | | | | | | | | | | | Instructions like "mov r9,QWORD PTR [rdx+0x8]" were being truncated to "mov r9,QWORD" by code that assuemd operands cannot have spaces. Signed-off-by: Alex Converse <aconverse@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1408050180-14088-1-git-send-email-aconverse@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf symbols: Make sure --symfs usage includes the path separatorArnaldo Carvalho de Melo2014-07-31
| | | | | | | | | | | | | | | | | | Minchan reported that perf failed to load vmlinux if --symfs argument doesn't end with '/' character. Fix it by making sure that the '/' path separator is used when composing pathnames with a --symfs provided directory name. Reported-by: Minchan Kim <minchan@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-8n4s6b6zvsez5ktanw006125@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Print the evsel name in the stdio outputArnaldo Carvalho de Melo2014-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | So that when showing multiple events annotations, we can figure out which is which: # perf record -a -e instructions,cycles sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.826 MB perf.data (~36078 samples) ] # perf evlist instructions cycles # perf annotate intel_idle 2> /dev/null | head -1 Percent | Source code & Disassembly of vmlinux for instructions # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-n1r51l329434js84qtb2c6l9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Check availability of annotate when processing samplesNamhyung Kim2014-02-24
| | | | | | | | | | | | | | | | | | | | | | | | | The TUI of perf report and top support annotation, but stdio and GTK don't. So it should be checked before calling hist_entry__inc_addr_ samples() to avoid wasting resources that will never be used. perf annotate need it regardless of UI and sort keys, so the check of whether to allocate resources should be on the tools that have annotate as an option in the TUI, 'report' and 'top', not on the function called by all of them. It caused perf annotate on ppc64 to produce zero output, since the buckets were not being allocated. Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Anton Blanchard <anton@samba.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1392859976-32760-1-git-send-email-namhyung@kernel.org [ Renamed (report,top)__needs_annotate() to ui__has_annotation() ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Use zfree to help detect use after free bugsArnaldo Carvalho de Melo2013-12-27
| | | | | | | | | | | | | | | | | Several areas already used this technique, so do some audit to consistently use it elsewhere. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-9sbere0kkplwe45ak6rk4a1f@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Introduce zfreeArnaldo Carvalho de Melo2013-12-27
| | | | | | | | | | | | | | | | | | | | | | For the frequent idiom of: free(ptr); ptr = NULL; Make it expect a pointer to the pointer being freed, so that it becomes clear at first sight that the variable being freed is being modified. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-pfw02ezuab37kha18wlut7ir@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Make symbol__inc_addr_samples privateArnaldo Carvalho de Melo2013-12-19
| | | | | | | | | | | | | | | | | | Since it is now accessed just thru addr_map_symbol and hist_entry wrappers. Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-gjoam7wcfrb03sp753gk1nfk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf annotate: Adopt methods from histsArnaldo Carvalho de Melo2013-12-19
| | | | | | | | | | | | | | | | | | Those are just wrappers to annotation methods, so move them to annotate.c Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-336h7z0bi2k51cbfi6mkpo5k@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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