- 16 10月, 2019 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
To be used with -S or -s, using just this new option implies -s, examples: # perf trace --errno-summary sleep 1 Summary of events: sleep (10793), 80 events, 93.0% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ nanosleep 1 0 1000.427 1000.427 1000.427 1000.427 0.00% mmap 8 0 0.026 0.002 0.003 0.005 9.18% close 5 0 0.018 0.001 0.004 0.009 48.97% mprotect 4 0 0.017 0.003 0.004 0.006 16.49% openat 3 0 0.012 0.003 0.004 0.005 9.41% munmap 1 0 0.010 0.010 0.010 0.010 0.00% brk 4 0 0.005 0.001 0.001 0.002 22.77% read 4 0 0.005 0.001 0.001 0.002 22.33% access 1 1 0.004 0.004 0.004 0.004 0.00% ENOENT: 1 fstat 3 0 0.004 0.001 0.001 0.002 17.18% lseek 3 0 0.003 0.001 0.001 0.001 11.62% arch_prctl 2 1 0.002 0.001 0.001 0.001 3.32% EINVAL: 1 execve 1 0 0.000 0.000 0.000 0.000 0.00% # Works as well together with --failure and -S, i.e. collect the stats and show just the syscalls that failed: # perf trace --failure -S --errno-summary sleep 1 0.032 arch_prctl(option: 0x3001, arg2: 0x7fffdb11b580) = -1 EINVAL (Invalid argument) 0.045 access(filename: "/etc/ld.so.preload", mode: R) = -1 ENOENT (No such file or directory) Summary of events: sleep (10806), 80 events, 93.0% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ nanosleep 1 0 1000.094 1000.094 1000.094 1000.094 0.00% mmap 8 0 0.026 0.002 0.003 0.005 9.06% close 5 0 0.018 0.001 0.004 0.010 49.58% mprotect 4 0 0.017 0.003 0.004 0.006 17.56% openat 3 0 0.014 0.004 0.005 0.006 12.29% munmap 1 0 0.010 0.010 0.010 0.010 0.00% brk 4 0 0.005 0.001 0.001 0.002 22.75% read 4 0 0.005 0.001 0.001 0.002 17.19% access 1 1 0.005 0.005 0.005 0.005 0.00% ENOENT: 1 fstat 3 0 0.004 0.001 0.001 0.002 21.66% lseek 3 0 0.003 0.001 0.001 0.001 11.71% arch_prctl 2 1 0.002 0.001 0.001 0.001 2.66% EINVAL: 1 execve 1 0 0.000 0.000 0.000 0.000 0.00% # Suggested-by: NAndi Kleen <ak@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-l0mjwczkpouov7lss5zn8d9h@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 15 10月, 2019 14 次提交
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由 Arnaldo Carvalho de Melo 提交于
Just like strace has: # trace -s sleep 1 Summary of events: sleep (32370), 80 events, 93.0% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ nanosleep 1 0 1000.402 1000.402 1000.402 1000.402 0.00% mmap 8 0 0.023 0.002 0.003 0.004 8.49% close 5 0 0.015 0.001 0.003 0.009 51.39% mprotect 4 0 0.014 0.002 0.003 0.005 16.95% openat 3 0 0.013 0.003 0.004 0.005 14.29% munmap 1 0 0.010 0.010 0.010 0.010 0.00% read 4 0 0.005 0.001 0.001 0.002 16.83% brk 4 0 0.004 0.001 0.001 0.002 20.82% access 1 1 0.004 0.004 0.004 0.004 0.00% fstat 3 0 0.003 0.001 0.001 0.001 12.17% lseek 3 0 0.003 0.001 0.001 0.001 11.45% arch_prctl 2 1 0.002 0.001 0.001 0.001 2.30% execve 1 0 0.000 0.000 0.000 0.000 0.00% # # perf trace -S sleep 1 ? ... [continued]: execve()) = 0 0.028 brk(brk: NULL) = 0x559f5bd96000 0.033 arch_prctl(option: 0x3001, arg2: 0x7ffda8b715a0) = -1 EINVAL (Invalid argument) 0.046 access(filename: "/etc/ld.so.preload", mode: R) = -1 ENOENT (No such file or directory) 0.055 openat(dfd: CWD, filename: "/etc/ld.so.cache", flags: RDONLY|CLOEXEC) = 3 0.060 fstat(fd: 3, statbuf: 0x7ffda8b707a0) = 0 0.062 mmap(addr: NULL, len: 134346, prot: READ, flags: PRIVATE, fd: 3, off: 0) = 0x7f3aedfc4000 0.066 close(fd: 3) = 0 0.079 openat(dfd: CWD, filename: "/lib64/libc.so.6", flags: RDONLY|CLOEXEC) = 3 0.085 read(fd: 3, buf: 0x7ffda8b70948, count: 832) = 832 0.088 lseek(fd: 3, offset: 792, whence: SET) = 792 0.090 read(fd: 3, buf: 0x7ffda8b70810, count: 68) = 68 0.093 fstat(fd: 3, statbuf: 0x7ffda8b707f0) = 0 0.095 mmap(addr: NULL, len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS) = 0x7f3aedfc2000 0.101 lseek(fd: 3, offset: 792, whence: SET) = 792 0.103 read(fd: 3, buf: 0x7ffda8b70450, count: 68) = 68 0.105 lseek(fd: 3, offset: 864, whence: SET) = 864 0.107 read(fd: 3, buf: 0x7ffda8b70470, count: 32) = 32 0.110 mmap(addr: NULL, len: 1857472, prot: READ, flags: PRIVATE|DENYWRITE, fd: 3, off: 0) = 0x7f3aeddfc000 0.114 mprotect(start: 0x7f3aede1e000, len: 1679360, prot: NONE) = 0 0.121 mmap(addr: 0x7f3aede1e000, len: 1363968, prot: READ|EXEC, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x22000) = 0x7f3aede1e000 0.127 mmap(addr: 0x7f3aedf6b000, len: 311296, prot: READ, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x16f000) = 0x7f3aedf6b000 0.131 mmap(addr: 0x7f3aedfb8000, len: 24576, prot: READ|WRITE, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x1bb000) = 0x7f3aedfb8000 0.138 mmap(addr: 0x7f3aedfbe000, len: 14272, prot: READ|WRITE, flags: PRIVATE|FIXED|ANONYMOUS) = 0x7f3aedfbe000 0.147 close(fd: 3) = 0 0.158 arch_prctl(option: SET_FS, arg2: 0x7f3aedfc3580) = 0 0.210 mprotect(start: 0x7f3aedfb8000, len: 16384, prot: READ) = 0 0.230 mprotect(start: 0x559f5b27d000, len: 4096, prot: READ) = 0 0.236 mprotect(start: 0x7f3aee00f000, len: 4096, prot: READ) = 0 0.240 munmap(addr: 0x7f3aedfc4000, len: 134346) = 0 0.300 brk(brk: NULL) = 0x559f5bd96000 0.302 brk(brk: 0x559f5bdb7000) = 0x559f5bdb7000 0.305 brk(brk: NULL) = 0x559f5bdb7000 0.310 openat(dfd: CWD, filename: "/usr/lib/locale/locale-archive", flags: RDONLY|CLOEXEC) = 3 0.315 fstat(fd: 3, statbuf: 0x7f3aedfbdac0) = 0 0.318 mmap(addr: NULL, len: 217750512, prot: READ, flags: PRIVATE, fd: 3, off: 0) = 0x7f3ae0e52000 0.325 close(fd: 3) = 0 0.358 nanosleep(rqtp: 0x7ffda8b714b0, rmtp: NULL) = 0 1000.622 close(fd: 1) = 0 1000.641 close(fd: 2) = 0 1000.664 exit_group(error_code: 0) = ? Summary of events: sleep (722), 80 events, 93.0% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ nanosleep 1 0 1000.194 1000.194 1000.194 1000.194 0.00% mmap 8 0 0.025 0.002 0.003 0.005 10.17% close 5 0 0.018 0.001 0.004 0.010 50.18% mprotect 4 0 0.016 0.003 0.004 0.006 16.81% openat 3 0 0.011 0.003 0.004 0.004 6.57% munmap 1 0 0.010 0.010 0.010 0.010 0.00% brk 4 0 0.005 0.001 0.001 0.002 20.72% read 4 0 0.005 0.001 0.001 0.002 16.71% access 1 1 0.005 0.005 0.005 0.005 0.00% fstat 3 0 0.004 0.001 0.001 0.002 14.82% lseek 3 0 0.003 0.001 0.001 0.001 11.66% arch_prctl 2 1 0.002 0.001 0.001 0.001 3.59% execve 1 0 0.000 0.000 0.000 0.000 0.00% # Works for system wide, e.g. for 1ms: # perf trace -s -a sleep 0.001 Summary of events: sleep (768), 94 events, 37.9% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ nanosleep 1 0 1.133 1.133 1.133 1.133 0.00% execve 7 6 0.351 0.003 0.050 0.316 88.53% mmap 8 0 0.024 0.002 0.003 0.004 8.86% mprotect 4 0 0.017 0.003 0.004 0.006 16.02% openat 3 0 0.013 0.004 0.004 0.005 8.34% munmap 1 0 0.010 0.010 0.010 0.010 0.00% brk 4 0 0.007 0.001 0.002 0.002 10.99% close 5 0 0.005 0.001 0.001 0.002 11.69% read 5 0 0.005 0.000 0.001 0.002 30.53% access 1 1 0.004 0.004 0.004 0.004 0.00% fstat 3 0 0.004 0.001 0.001 0.002 10.74% lseek 3 0 0.003 0.001 0.001 0.001 10.20% arch_prctl 2 1 0.002 0.001 0.001 0.001 3.34% Web Content (21258), 46 events, 18.5% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 12 12 0.015 0.001 0.001 0.002 8.50% futex 2 0 0.008 0.003 0.004 0.005 27.08% poll 6 0 0.006 0.000 0.001 0.002 22.14% read 2 0 0.006 0.002 0.003 0.003 26.08% write 1 0 0.002 0.002 0.002 0.002 0.00% Web Content (4365), 36 events, 14.5% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 10 10 0.015 0.001 0.002 0.003 11.83% poll 5 0 0.006 0.000 0.001 0.002 28.44% futex 2 0 0.005 0.001 0.003 0.004 48.29% read 1 0 0.003 0.003 0.003 0.003 0.00% Timer (21275), 14 events, 5.6% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ futex 6 1 0.240 0.000 0.040 0.149 64.58% write 1 0 0.008 0.008 0.008 0.008 0.00% Timer (4383), 14 events, 5.6% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ futex 6 2 0.186 0.000 0.031 0.181 96.45% write 1 0 0.010 0.010 0.010 0.010 0.00% Web Content (20354), 28 events, 11.3% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ recvmsg 8 8 0.010 0.001 0.001 0.002 15.24% poll 4 0 0.004 0.000 0.001 0.002 35.68% futex 1 0 0.003 0.003 0.003 0.003 0.00% read 1 0 0.003 0.003 0.003 0.003 0.00% Timer (20371), 10 events, 4.0% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ futex 4 1 0.077 0.000 0.019 0.075 95.46% write 1 0 0.005 0.005 0.005 0.005 0.00% [root@quaco ~]# Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-k7kh2muo5oeg56yx446hnw9v@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> -
由 Jin Yao 提交于
'perf record' has supported --all-kernel / --all-user to configure all used events to run in kernel space or run in user space. But 'perf stat' doesn't support these options. It would be useful to support these options in 'perf stat' too to keep the same semantics available in both tools. Signed-off-by: NJin Yao <yao.jin@linux.intel.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191011050545.3899-1-yao.jin@linux.intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Thomas Richter 提交于
The build of file libperf-jvmti.so succeeds but the resulting object fails to load: # ~/linux/tools/perf/perf record -k mono -- java \ -XX:+PreserveFramePointer \ -agentpath:/root/linux/tools/perf/libperf-jvmti.so \ hog 100000 123450 Error occurred during initialization of VM Could not find agent library /root/linux/tools/perf/libperf-jvmti.so in absolute path, with error: /root/linux/tools/perf/libperf-jvmti.so: undefined symbol: _ctype Add the missing _ctype symbol into the build script. Fixes: 79743bc9 ("perf jvmti: Link against tools/lib/string.o to have weak strlcpy()") Signed-off-by: NThomas Richter <tmricht@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Link: http://lore.kernel.org/lkml/20191008093841.59387-1-tmricht@linux.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> -
由 Ian Rogers 提交于
Remove redirection of objdump's stderr to /dev/null to help diagnose failures. Fix the '--no-show-raw' flag to be '--no-show-raw-insn' which binutils is permissive and allows, but fails with LLVM objdump. Signed-off-by: NIan Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: clang-built-linux@googlegroups.com Link: http://lore.kernel.org/lkml/20191010183649.23768-6-irogers@google.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Ian Rogers 提交于
Avoiding a pipe allows objdump command failures to surface. Move to the caller of symbol__parse_objdump_line the call to strim that removes leading and trailing tabs. Add a new expand_tabs function that if a tab is present allocate a new line in which tabs are expanded. In symbol__parse_objdump_line the line had no leading spaces, so simplify the line_ip processing. Signed-off-by: NIan Rogers <irogers@google.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: clang-built-linux@googlegroups.com Link: http://lore.kernel.org/lkml/20191010183649.23768-5-irogers@google.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Ian Rogers 提交于
Simplify the objdump command by not piping the output of objdump through grep. Instead, drop lines that match the grep pattern during the reading loop. Signed-off-by: NIan Rogers <irogers@google.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: clang-built-linux@googlegroups.com Link: http://lore.kernel.org/lkml/20191010183649.23768-4-irogers@google.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Ian Rogers 提交于
Reduce duplicated logic by using the subcmd library. Ensure when errors occur they are reported to the caller. Before this patch, if no lines are read the error status is 0. Signed-off-by: NIan Rogers <irogers@google.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: clang-built-linux@googlegroups.com Link: http://lore.kernel.org/lkml/20191010183649.23768-3-irogers@google.com Link: http://lore.kernel.org/lkml/20191015003418.62563-1-irogers@google.com [ merged follow up fix for NULL termination as in the 2nd link above ] Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Ian Rogers 提交于
Objdump output is parsed using getline which allocates memory for the read. Getline will realloc if the memory is too small, but currently the line is always freed after the call. Simplify parse_objdump_line by performing the reading in symbol__disassemble. Signed-off-by: NIan Rogers <irogers@google.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: clang-built-linux@googlegroups.com Link: http://lore.kernel.org/lkml/20191010183649.23768-2-irogers@google.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jin Yao 提交于
We received a user report that call-graph DWARF mode was enabled in 'perf record' but 'perf report' didn't unwind the callstack correctly. The reason was, libunwind was not compiled in. We can use 'perf -vv' to check the compiled libraries but it would be valuable to report a warning to user directly (especially valuable for a perf newbie). The warning is: Warning: Please install libunwind development packages during the perf build. Both TUI and stdio are supported. Signed-off-by: NJin Yao <yao.jin@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191011022122.26369-1-yao.jin@linux.intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Leo Yan 提交于
When executing the task exit testing case, perf gets stuck in an endless loop this case and doesn't return back on Arm64 Juno board. After digging into this issue, since Juno board has Arm's big.LITTLE CPUs, thus the PMUs are not compatible between the big CPUs and little CPUs. This leads to a PMU event that cannot be enabled properly when the traced task is migrated from one variant's CPU to another variant. Finally, the test case runs into infinite loop for cannot read out any event data after return from polling. Eventually, we need to work out formal solution to allow PMU events can be freely migrated from one CPU variant to another, but this is a difficult task and a different topic. This patch tries to fix the Perf test case to avoid infinite loop, when the testing detects 1000 times retrying for reading empty events, it will directly bail out and return failure. This allows the Perf tool can continue its other test cases. Signed-off-by: NLeo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20191011091942.29841-2-leo.yan@linaro.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Leo Yan 提交于
When fail to mmap events in task exit case, it misses to set 'err' to -1; thus the testing will not report failure for it. This patch sets 'err' to -1 when fails to mmap events, thus Perf tool can report correct result. Fixes: d723a550 ("perf test: Add test case for checking number of EXIT events") Signed-off-by: NLeo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20191011091942.29841-1-leo.yan@linaro.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Andi Kleen 提交于
In the earlier fix for the memory overrun of id arrays I managed to typo the wrong event in the fix. Of course we need to close the current event in the loop, not the original failing event. The same test case as in the original patch still passes. Fixes: 7834fa94 ("perf evlist: Fix access of freed id arrays") Signed-off-by: NAndi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20191011182140.8353-2-andi@firstfloor.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Andi Kleen 提交于
My earlier patch to just enable --reltime with --time was a little too optimistic. The --time parsing would accept absolute time, which is very confusing to the user. Support relative time in --time parsing too. This only works with recent perf record that records the first sample time. Otherwise we error out. Fixes: 3714437d ("perf script: Allow --time with --reltime") Signed-off-by: NAndi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20191011182140.8353-1-andi@firstfloor.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
By using "make TCMALLOC=1" you can enable perf to be build for usage with libtcmalloc.so (gperftools). Get heap profile (tools/perf directory): $ <install gperftools> $ make TCMALLOC=1 DEBUG=1 $ HEAPPROFILE=/tmp/heapprof ./perf ... $ pprof ./perf /tmp/heapprof.000* (pprof) top Total: 2335.5 MB 1735.1 74.3% 74.3% 1735.1 74.3% memdup 402.0 17.2% 91.5% 402.0 17.2% zalloc 140.2 6.0% 97.5% 145.8 6.2% map__new 33.6 1.4% 98.9% 33.6 1.4% symbol__new 12.4 0.5% 99.5% 12.4 0.5% alloc_event 6.2 0.3% 99.7% 6.2 0.3% nsinfo__new 5.5 0.2% 100.0% 5.5 0.2% nsinfo__copy 0.3 0.0% 100.0% 0.3 0.0% dso__new 0.1 0.0% 100.0% 0.1 0.0% do_read_string 0.0 0.0% 100.0% 0.0 0.0% __GI__IO_file_doallocate See callstack: $ pprof --pdf ./perf /tmp/heapprof.00* > callstack.pdf $ pprof --web ./perf /tmp/heapprof.00* Committer testing: Install gperftools, on fedora: # dnf install gperftools-devel Then build: $ make TCMALLOC=1 DEBUG=1 -C tools/perf O=/tmp/build/perf install-bin Verify that it linked against the right library: $ ldd ~/bin/perf | grep tcma libtcmalloc.so.4 => /lib64/libtcmalloc.so.4 (0x00007fb2953a7000) $ Run 'perf trace' system wide for 1 minute: # HEAPPROFILE=/tmp/heapprof perf trace -a sleep 1m <SNIP> 59985.524 ( 0.006 ms): Web Content/20354 recvmsg(fd: 9<socket:[1762817]>, msg: 0x7ffee5fdafb0) = -1 EAGAIN (Resource temporarily unavailable) 59985.536 ( 0.005 ms): Web Content/20354 recvmsg(fd: 9<socket:[1762817]>, msg: 0x7ffee5fdafc0) = -1 EAGAIN (Resource temporarily unavailable) 59981.956 (10.143 ms): SCTP timer/21716 ... [continued]: select()) = 0 (Timeout) 59985.549 ( ): Web Content/20354 poll(ufds: 0x7f1df38af180, nfds: 3, timeout_msecs: 4294967295) ... 0.926 (59999.481 ms): sleep/29764 ... [continued]: nanosleep()) = 0 59992.133 ( ): SCTP timer/21716 select(tvp: 0x7ff5bf7fee80) ... 60000.477 ( 0.009 ms): sleep/29764 close(fd: 1) = 0 60000.493 ( 0.005 ms): sleep/29764 close(fd: 2) = 0 60000.514 ( ): sleep/29764 exit_group() = ? Dumping heap profile to /tmp/heapprof.0001.heap (Exiting, 3 MB in use) [root@quaco ~]# Install pprof: # dnf install pprof And run it: # pprof ~/bin/perf /tmp/heapprof.0001.heap Using local file /root/bin/perf. Using local file /tmp/heapprof.0001.heap. Welcome to pprof! For help, type 'help'. (pprof) top Total: 4.0 MB 1.7 42.0% 42.0% 2.2 54.1% map__new 0.9 23.3% 65.3% 0.9 23.3% zalloc 0.5 11.4% 76.7% 0.5 11.4% dso__new 0.2 5.6% 82.3% 0.3 8.5% trace__sys_enter 0.2 4.9% 87.2% 0.2 4.9% __GI___strdup 0.2 3.8% 91.0% 0.2 3.8% new_term 0.1 2.2% 93.2% 0.4 10.1% __perf_pmu__new_alias 0.0 1.0% 94.3% 0.0 1.2% event_read_fields 0.0 0.8% 95.1% 0.0 0.8% nsinfo__new 0.0 0.7% 95.8% 0.1 3.2% trace__read_syscall_info (pprof) Signed-off-by: NJiri Olsa <jolsa@kernel.org> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191013151427.11941-2-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 11 10月, 2019 2 次提交
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由 Jin Yao 提交于
This patch prints the stddev and hist for the cycles diff of program block. It can help us to understand if the cycles is noisy or not. This patch is inspired by Andi Kleen's patch: https://lwn.net/Articles/600471/ We create new option '--cycles-hist'. Example: perf record -b ./div perf record -b ./div perf diff -c cycles # Baseline [Program Block Range] Cycles Diff Shared Object Symbol # ........ .......................................................... .... ................. ............................ # 46.72% [div.c:40 -> div.c:40] 0 div [.] main 46.72% [div.c:42 -> div.c:44] 0 div [.] main 46.72% [div.c:42 -> div.c:39] 0 div [.] main 20.54% [random_r.c:357 -> random_r.c:394] 1 libc-2.27.so [.] __random_r 20.54% [random_r.c:357 -> random_r.c:380] 0 libc-2.27.so [.] __random_r 20.54% [random_r.c:388 -> random_r.c:388] 0 libc-2.27.so [.] __random_r 20.54% [random_r.c:388 -> random_r.c:391] 0 libc-2.27.so [.] __random_r 17.04% [random.c:288 -> random.c:291] 0 libc-2.27.so [.] __random 17.04% [random.c:291 -> random.c:291] 0 libc-2.27.so [.] __random 17.04% [random.c:293 -> random.c:293] 0 libc-2.27.so [.] __random 17.04% [random.c:295 -> random.c:295] 0 libc-2.27.so [.] __random 17.04% [random.c:295 -> random.c:295] 0 libc-2.27.so [.] __random 17.04% [random.c:298 -> random.c:298] 0 libc-2.27.so [.] __random 8.40% [div.c:22 -> div.c:25] 0 div [.] compute_flag 8.40% [div.c:27 -> div.c:28] 0 div [.] compute_flag 5.14% [rand.c:26 -> rand.c:27] 0 libc-2.27.so [.] rand 5.14% [rand.c:28 -> rand.c:28] 0 libc-2.27.so [.] rand 2.15% [rand@plt+0 -> rand@plt+0] 0 div [.] rand@plt 0.00% [kernel.kallsyms] [k] __x86_indirect_thunk_rax 0.00% [do_mmap+714 -> do_mmap+732] -10 [kernel.kallsyms] [k] do_mmap 0.00% [do_mmap+737 -> do_mmap+765] 1 [kernel.kallsyms] [k] do_mmap 0.00% [do_mmap+262 -> do_mmap+299] 0 [kernel.kallsyms] [k] do_mmap 0.00% [__x86_indirect_thunk_r15+0 -> __x86_indirect_thunk_r15+0] 7 [kernel.kallsyms] [k] __x86_indirect_thunk_r15 0.00% [native_sched_clock+0 -> native_sched_clock+119] -1 [kernel.kallsyms] [k] native_sched_clock 0.00% [native_write_msr+0 -> native_write_msr+16] -13 [kernel.kallsyms] [k] native_write_msr When we enable the option '--cycles-hist', the output is perf diff -c cycles --cycles-hist # Baseline [Program Block Range] Cycles Diff stddev/Hist Shared Object Symbol # ........ .......................................................... .... ................. ................. ............................ # 46.72% [div.c:40 -> div.c:40] 0 ± 37.8% ▁█▁▁██▁█ div [.] main 46.72% [div.c:42 -> div.c:44] 0 ± 49.4% ▁▁▂█▂▂▂▂ div [.] main 46.72% [div.c:42 -> div.c:39] 0 ± 24.1% ▃█▂▄▁▃▂▁ div [.] main 20.54% [random_r.c:357 -> random_r.c:394] 1 ± 33.5% ▅▂▁█▃▁▂▁ libc-2.27.so [.] __random_r 20.54% [random_r.c:357 -> random_r.c:380] 0 ± 39.4% ▁▁█▁██▅▁ libc-2.27.so [.] __random_r 20.54% [random_r.c:388 -> random_r.c:388] 0 libc-2.27.so [.] __random_r 20.54% [random_r.c:388 -> random_r.c:391] 0 ± 41.2% ▁▃▁▂█▄▃▁ libc-2.27.so [.] __random_r 17.04% [random.c:288 -> random.c:291] 0 ± 48.8% ▁▁▁▁███▁ libc-2.27.so [.] __random 17.04% [random.c:291 -> random.c:291] 0 ±100.0% ▁█▁▁▁▁▁▁ libc-2.27.so [.] __random 17.04% [random.c:293 -> random.c:293] 0 ±100.0% ▁█▁▁▁▁▁▁ libc-2.27.so [.] __random 17.04% [random.c:295 -> random.c:295] 0 ±100.0% ▁█▁▁▁▁▁▁ libc-2.27.so [.] __random 17.04% [random.c:295 -> random.c:295] 0 libc-2.27.so [.] __random 17.04% [random.c:298 -> random.c:298] 0 ± 75.6% ▃█▁▁▁▁▁▁ libc-2.27.so [.] __random 8.40% [div.c:22 -> div.c:25] 0 ± 42.1% ▁▃▁▁███▁ div [.] compute_flag 8.40% [div.c:27 -> div.c:28] 0 ± 41.8% ██▁▁▄▁▁▄ div [.] compute_flag 5.14% [rand.c:26 -> rand.c:27] 0 ± 37.8% ▁▁▁████▁ libc-2.27.so [.] rand 5.14% [rand.c:28 -> rand.c:28] 0 libc-2.27.so [.] rand 2.15% [rand@plt+0 -> rand@plt+0] 0 div [.] rand@plt 0.00% [kernel.kallsyms] [k] __x86_indirect_thunk_rax 0.00% [do_mmap+714 -> do_mmap+732] -10 [kernel.kallsyms] [k] do_mmap 0.00% [do_mmap+737 -> do_mmap+765] 1 [kernel.kallsyms] [k] do_mmap 0.00% [do_mmap+262 -> do_mmap+299] 0 [kernel.kallsyms] [k] do_mmap 0.00% [__x86_indirect_thunk_r15+0 -> __x86_indirect_thunk_r15+0] 7 [kernel.kallsyms] [k] __x86_indirect_thunk_r15 0.00% [native_sched_clock+0 -> native_sched_clock+119] -1 ± 38.5% ▄█▁ [kernel.kallsyms] [k] native_sched_clock 0.00% [native_write_msr+0 -> native_write_msr+16] -13 ± 47.1% ▁█▇▃▁▁ [kernel.kallsyms] [k] native_write_msr v8: --- Rebase to perf/core branch v7: --- 1. v6 got Jiri's ACK. 2. Rebase to latest perf/core branch. v6: --- 1. Jiri provides better code for using data__hpp_register() in ui_init(). Use this code in v6. v5: --- 1. Refine the use of data__hpp_register() in ui_init() according to Jiri's suggestion. v4: --- 1. Rename the new option from '--noisy' to '--cycles-hist' 2. Remove the option '-n'. 3. Only update the spark value and stats when '--cycles-hist' is enabled. 4. Remove the code of printing '..'. v3: --- 1. Move the histogram to a separate column 2. Move the svals[] out of struct stats v2: --- Jiri got a compile error, CC builtin-diff.o builtin-diff.c: In function ‘compute_cycles_diff’: builtin-diff.c:712:10: error: taking the absolute value of unsigned type ‘u64’ {aka ‘long unsigned int’} has no effect [-Werror=absolute-value] 712 | labs(pair->block_info->cycles_spark[i] - | ^~~~ Because the result of u64 - u64 is still u64. Now we change the type of cycles_spark[] to s64. Signed-off-by: NJin Yao <yao.jin@linux.intel.com> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20190925011446.30678-1-yao.jin@linux.intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Andi reported that 'make DEBUG=1' does not propagate to the libbperf code. It's true also for the other flags. Changing the code to propagate the global build flags to libperf compilation. Reported-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191011122155.15738-1-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 10 10月, 2019 23 次提交
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由 Jiri Olsa 提交于
Introduce the perf_evlist__filter_pollfd function and export it in the perf/evlist.h header, so that libperf users can check if the descriptor is still alive. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-27-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Add a static perf_evlist__purge() function to purge evsels from a evlist. Add also perf_evlist__for_each_entry_safe() which is used by perf_evlist__purge(). Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-26-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Add the perf_evlist__exit() function, so far it's not exported and added only for internal use for perf and libperf. USe it to release cpus/threads and pollfd array. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-25-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
It's needed in libperf only, so move it to the perf_evlist__mmap_ops() function. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-24-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Currently when a new map is mmapped we set its refcnt to 2 in the perf_evlist_mmap_ops::mmap callback. Every mmap gets its refcnt set to 2 when it's first mmaped: - 1 for the current user, which will be taken out by a call to perf_evlist__munmap_filtered(), where we find out there's no more data comming from kernel to this mmap. - 1 for the drain code where in perf_mmap__consume() the mmap is released if it is empty. Move this common setup into libperf's generic code before the mmap callback is called. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-23-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> -
由 Jiri Olsa 提交于
Switch to the libperf mmap interface by calling directly perf_evlist__mmap_ops() and removing perf's evlist__mmap_per_* functions. By switching to libperf perf_evlist__mmap() we need to operate over 'struct perf_mmap' in evlist__add_pollfd, so make the related changes there. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-22-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Add the perf_evlist__mmap_cb_mmap() function to call perf specific mmap__mmap() function during perf_evlist__mmap_ops() call. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-21-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Add the perf_evlist__mmap_cb_get() function to return 'struct perf_mmap' object during perf_evlist__mmap_ops() call. The array of 'struct mmap' is allocated via evlist__alloc_mmap(), in this callback we simply returns pointer to the base object. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-20-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Add perf_evlist__mmap_cb_idx function to call auxtrace_mmap_params__set_idx() on each new index during perf_evlist__mmap_ops call. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-19-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Add the perf_evlist_mmap_ops::mmap callback to be called in mmap_per_evsel() to actually mmap the map. Add libperf's perf_evlist__mmap_cb_mmap() function as libperf's mmap callback. New mmaped map gets refcount set to 2 in mmap__mmap(), we follow that in mmap callback. We will move this to common place after we switch to perf_evlist__mmap(). Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-18-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Add the perf_evlist_mmap_ops::get callback to be called in mmap_per_evsel() to get/allocate the 'struct perf_mmap' object. Add the libperf's perf_evlist__mmap_cb_get() function as libperf's get callback. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-17-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Add the perf_evlist_mmap_ops::idx callback to be called in mmap_per_cpu() and mmap_per_thread() with current cpu and thread indexes. It's used by current aux code, so perf will use this callback to set the aux index. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-16-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
To be able to pass specific callbacks to evlist's mmap. There will be a specific call to this function from perf's evlist__mmap() and libperf's perf_evlist__mmap() functions in following changes. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-15-jolsa@kernel.orgSigned-off-by: NJiri Olsa <jolsa@kernel.org>
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由 Jiri Olsa 提交于
Add libperf's version of perf_evlist__mmap()/munmap() functions and exporting them in the perf/evlist.h header. It's the backbone of what we have in perf code. The following changes will add needed callbacks and then we'll finally switch the perf code to use libperf's version. Add mmap/mmap_ovw 'struct perf_mmap' object arrays to hold maps for libperf's evlist. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-14-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Move perf_mmap__read_event() from tools/perf to libperf and export it in the perf/mmap.h header. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-13-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Move perf_mmap__read_init() from tools/perf to libperf and export it in the perf/mmap.h header. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-12-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Move perf_mmap__read_init() from tools/perf to libperf and export it in perf/mmap.h header. And add pr_debug2()/pr_debug3() macros support, because the code is using them. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-11-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Move perf_mmap__consume() vrom tools/perf to libperf and export it in the perf/mmap.h header. Move also the needed helpers perf_mmap__write_tail(), perf_mmap__read_head() and perf_mmap__empty(). Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-10-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
We will move this code to libperf shortly, so we need to free it of 'struct auxtrace_mmap' usage, because it won't be available in libperf (for now). The perf_event_mmap_page::aux_size is set when the aux mmap is mapped, so the check is equivalent. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-9-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Move perf_mmap__put() from tools/perf to libperf. Once perf_mmap__put() is moved, we need a way to call application related unmap code (AIO and aux related code for eprf), when the map goes away. Add the perf_mmap::unmap callback to do that. The unmap path from perf is: perf_mmap__put (libperf) perf_mmap__munmap (libperf) map->unmap_cb -> perf_mmap__unmap_cb (perf) mmap__munmap (perf) Committer notes: Add missing linux/kernel.h to tools/perf/lib/mmap.c to get the BUG_ON definition. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-8-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> -
由 Jiri Olsa 提交于
Move perf_mmap__unmap() from tools/perf to libperf, to internal header internal/mmap.h. It will be used in the following patches. And rename the existing perf's function to mmap__munmap(). Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-7-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Move perf_mmap__get() from tools/perf to libperf in the internal header internal/mmap.h. Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-6-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Jiri Olsa 提交于
Move perf_mmap__mmap() from tools/perf to libperf, it will be used in the following patches. And rename the existing perf's function to mmap__mmap(). Signed-off-by: NJiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20191007125344.14268-5-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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