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2009-12-07perf probe: Use pr_debug for debug messageMasami Hiramatsu1-2/+2
Use pr_debug() for "missing vmlinux" debugging message. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: systemtap <[email protected]> Cc: DLE <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-12-02perf_event: Fix compile errorXiao Guangrong1-1/+4
Fix: cc1: warnings being treated as errors builtin-probe.c: In function 'cmd_probe': builtin-probe.c:163: error: unused variable 'fd' Signed-off-by: Xiao Guangrong <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]> [ v2: use NO_LIBDWARF instead of __used ] Signed-off-by: Ingo Molnar <[email protected]>
2009-12-01perf probe: Add --list option for listing current probe eventsMasami Hiramatsu1-1/+11
Add --list option for listing currently defined probe events in the kernel. This shows events in below format; [group:event] <perf-probe probe-definition> for example: [probe:schedule_0] schedule+30 cpu Note that source file/line information is not supported yet. So even if you added a probe by line, it will be shown in <symbol+offset>. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: systemtap <[email protected]> Cc: DLE <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <20091201002017.10235.76575.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-12-01perf probe: Move probe event utility functions to probe-event.cMasami Hiramatsu1-218/+9
Split probe event (kprobe-events and perf probe events) utility functions from builtin-probe.c to probe-event.c. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: systemtap <[email protected]> Cc: DLE <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <20091201001958.10235.90243.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-12-01perf probe: Fix probe array index for multiple probe pointsMasami Hiramatsu1-1/+1
Fix the index of formatted probe array for multiple probe points, which should be probes[i] instead of probes[0]. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: systemtap <[email protected]> Cc: DLE <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <20091201001950.10235.54781.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-12-01perf probe: Fix argv array size in probe parserMasami Hiramatsu1-4/+7
Since the syntax has been changed, probe definition needs parameters less than MAX_PROBE_ARGS + 1 (probe-point + arguments). Signed-off-by: Masami Hiramatsu <[email protected]> Cc: systemtap <[email protected]> Cc: DLE <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <20091201001943.10235.80367.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-12-01perf probe: Change a debugging message from pr_info to pr_debugMasami Hiramatsu1-1/+1
Change annoying debug-info using notice from pr_info() to pr_debug(), since the message always printed when user adds a probe point which requires debug-info. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: systemtap <[email protected]> Cc: DLE <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <20091201001927.10235.63645.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-11-24perf tools: Introduce zalloc() for the common calloc(1, N) caseArnaldo Carvalho de Melo1-2/+2
This way we type less characters and it looks more like the kzalloc kernel counterpart. Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Frédéric Weisbecker <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Paul Mackerras <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-11-04perf/probes: Rename perf probe events group nameMasami Hiramatsu1-1/+1
Rename the group name of perf probe events to 'probe'. Signed-off-by: Masami Hiramatsu <[email protected]> Acked-by: Frederic Weisbecker <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> LKML-Reference: <20091104001238.3454.70508.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-11-04perf/probes: Fall back to non-dwarf if possibleMasami Hiramatsu1-28/+36
Fall back to non-dwarf probe point if the probe definition may not need dwarf analysis, when perf can't find vmlinux/debuginfo. This might skip some inlined code of target function. Signed-off-by: Masami Hiramatsu <[email protected]> Acked-by: Frederic Weisbecker <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> LKML-Reference: <20091104001229.3454.63987.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-11-04perf/probes: Improve error messagesMasami Hiramatsu1-7/+13
Improve error messages in perf-probe so that users can figure out problems easily. Reported-by: Ingo Molnar <[email protected]> Signed-off-by: Masami Hiramatsu <[email protected]> Acked-by: Frederic Weisbecker <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> LKML-Reference: <20091104001221.3454.52030.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-11-03perf probe: Annotate variable initializationArnaldo Carvalho de Melo1-1/+1
Annotate away this false positive warning on older GCCs: cc1: warnings being treated as errors builtin-probe.c: In function ‘parse_probe_event’: builtin-probe.c:72: warning: ‘nc’ is used uninitialized in this function Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Acked-by: Masami Hiramatsu <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-10-29perf/probes: Support function entry relative line numberMasami Hiramatsu1-7/+7
Add function-entry relative line number specifying support to perf-probe. This allows users to define probes by line number from entry of the function. e.g. perf probe schedule:16 Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> LKML-Reference: <20091027204319.30545.30678.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-10-29perf/probes: Improve probe point syntax of perf-probeMasami Hiramatsu1-70/+111
This changes probe point syntax of perf-probe as below <SRC>[:ABS_LN] [ARGS] or <FUNC>[+OFFS|%return][@SRC] [ARGS] And event name and event group name are automatically generated based on probe-symbol and offset as below. perfprobes/SYMBOL_OFFSET[_NUM] Where SYMBOL is the probing symbol and OFFSET is the byte offset from the symbol. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> LKML-Reference: <20091027204310.30545.84984.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-10-29perf/probes: Improve command-line option of perf-probeMasami Hiramatsu1-10/+18
Change command-line option from -P to --add, and accepting probes without --add too. perf probe --add "probe-define" or, just: perf probe "probe-define" Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Frank Ch. Eigler <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jason Baron <[email protected]> Cc: K.Prasad <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> LKML-Reference: <20091027204301.30545.48600.stgit@harusame> Signed-off-by: Ingo Molnar <[email protected]>
2009-10-23perf probe: Print debug messages using pr_*()Arnaldo Carvalho de Melo1-10/+10
Use the new pr_{err,warning,debug,etc} printout methods, just like in the kernel. Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Mike Galbraith <[email protected]> LKML-Reference: <[email protected]> [ Split this patch out, to keep perf/probes separate. ] Signed-off-by: Ingo Molnar <[email protected]>
2009-10-17perf: Use eprintf() for debug messages in perf-probeMasami Hiramatsu1-9/+14
Replace debug() macro with eprintf() and add -v option for showing those messages in perf-probe. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-10-17perf: Use die() for error cases in perf-probeMasami Hiramatsu1-33/+14
Use die() for exiting perf-probe with errors. This replaces perror_exit(), msg_exit() and fprintf()+exit() with die(), and uses die() in semantic_error(). This also renames 'die' local variables to 'dw_die' for avoiding name confliction. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-10-12perf probe: Add perf probe command support without libdwarfMasami Hiramatsu1-7/+35
Enables 'perf probe' even if libdwarf is not installed. If libdwarf is not found, 'perf probe' just disables dwarf support. Users can use 'perf probe' to set up new events by using kprobe_events format. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Frank Ch. Eigler <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Frederic Weisbecker <[email protected]>
2009-10-12perf: Add perf probe subcommand, a kprobe-event setup helperMasami Hiramatsu1-0/+358
Add perf probe subcommand that implements a kprobe-event setup helper to the perf command. This allows user to define kprobe events using C expressions (C line numbers, C function names, and C local variables). Usage ----- perf probe [<options>] -P 'PROBEDEF' [-P 'PROBEDEF' ...] -k, --vmlinux <file> vmlinux/module pathname -P, --probe <p|r:[GRP/]NAME FUNC[+OFFS][@SRC]|@SRC:LINE [ARG ...]> probe point definition, where p: kprobe probe r: kretprobe probe GRP: Group name (optional) NAME: Event name FUNC: Function name OFFS: Offset from function entry (in byte) SRC: Source code path LINE: Line number ARG: Probe argument (local variable name or kprobe-tracer argument format is supported.) Changes in v4: - Add _GNU_SOURCE macro for strndup(). Changes in v3: - Remove -r option because perf always be used for online kernel. - Check malloc/calloc results. Changes in v2: - Check synthesized string length. - Rename perf kprobe to perf probe. - Use spaces for separator and update usage comment. - Check error paths in parse_probepoint(). - Check optimized-out variables. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Jim Keniston <[email protected]> Cc: Frank Ch. Eigler <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Frederic Weisbecker <[email protected]>
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