kernel/tools/perf/util/parse-events.l, branch linux-3.11.y

perf tools: Add basic event modifier sanity check

2012-11-14T19:52:24Z

Updating event parser to allow any non zero string containing [ukhpGH] characters for event modifier. The modifier sanity is checked later in parse-event object logic. The check validates modifier to contain only one instance of any modifier (apart from 'p') present. v2: - added length check suggested Namhyung Kim Signed-off-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20121113143258.GA2481@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add arbitary aliases and support names with -

2012-11-08T19:12:03Z

- Add missing scanner symbol for arbitrary aliases inside the config region. - looks nicer than _, so allow - in the event names. Used for various of the arch perfmon and Haswell events. Signed-off-by: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1352123463-7346-6-git-send-email-eranian@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Use __maybe_used for unused variables

2012-09-11T15:19:15Z

perf defines both __used and __unused variables to use for marking unused variables. The variable __used is defined to __attribute__((__unused__)), which contradicts the kernel definition to __attribute__((__used__)) for new gcc versions. On Android, __used is also defined in system headers and this leads to warnings like: warning: '__used__' attribute ignored __unused is not defined in the kernel and is not a standard definition. If __unused is included everywhere instead of __used, this leads to conflicts with glibc headers, since glibc has a variables with this name in its headers. The best approach is to use __maybe_unused, the definition used in the kernel for __attribute__((unused)). In this way there is only one definition in perf sources (instead of 2 definitions that point to the same thing: __used and __unused) and it works on both Linux and Android. This patch simply replaces all instances of __used and __unused with __maybe_unused. Signed-off-by: Irina Tirdea Acked-by: Pekka Enberg Cc: David Ahern Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com [ committer note: fixed up conflict with a116e05 in builtin-sched.c ] Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Catch event names from command line

2012-08-22T16:40:49Z

Use command line string provided by the -e option to name events. This way we get unique events names that also support pmu event syntax (//). No need to reconstruct the name anymore from its attributes. We use the event_desc of the header to store the name in the perf.data header. Thus it is also available for perf report. Implemented by putting the parser in different states to parse events or configs. And since event names are now generated from the command line specification. Update event names in test cases accordingly. Signed-off-by: Robert Richter Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1345144224-27280-6-git-send-email-robert.richter@amd.com [ committer note: Folded patch fixing 'perf test' failure reported by Jiri Olsa ] Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add support to parse event group syntax

2012-08-14T20:03:44Z

Adding scanner/parser bits to parse event groups. The grammar for group is: groups: groups ',' group | group group: group_name '{' events '}' group_mod group_name: name | empty group_mod: ':' group_mods | empty group_mods: event_mod It's possible to use standard event modifier as a modifier for group. It'll be used as an update to existing event modifiers. It's necessary to use quoting ("'\) when specifying group on command line, since {} characters are interpreted by most of the shells. It is now possible to specify groups in event syntax like: '{cycles,faults}' - anonymous group 'group1{cycles,faults} - group with name 'group1' '{cycles,faults}:k - anonymous group with event modifier 'k' '{cpu-clock,task-clock},{minor-faults,major-faults}' - two anonymous groups The grouping functionality itself is coming shortly. Reviewed-by: Namhyung Kim Signed-off-by: Jiri Olsa Acked-by: Peter Zijlstra Cc: Andi Kleen Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ulrich Drepper Link: http://lkml.kernel.org/n/tip-p4j8bnvo879uokum4k4zk5q6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix parsing of 64 bit raw config value for 32 bit

2012-08-08T15:39:56Z

perf record fails on 32 bit with: invalid or unsupported event: 'r40000F7E0' Fixing this by parsing 64 bit num values. Signed-off-by: Robert Richter Cc: Ingo Molnar Link: http://lkml.kernel.org/r/1344361396-7237-4-git-send-email-robert.richter@amd.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Split out PE_VALUE_SYM parsing token to SW and HW tokens

2012-07-05T14:29:56Z

Spliting PE_VALUE_SYM token to PE_VALUE_SYM_HW and PE_VALUE_SYM_SW tokens to separate hardware and software symbols. This will be useful in upcomming patch where we want to be able to parse out only hardware events. Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1341352848-11833-6-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add empty rule for new line in event syntax parsing

2012-07-05T14:22:29Z

The flex generator prints out each input character that is ignored by lex rules. Since the alias processing, we can have '\n' characters on input. We need to assign empty rule to it, so it's not printed out. Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1341352848-11833-2-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix hw breakpoint's type modifier parsing

2012-06-29T16:28:13Z

Fixing the hw breakpoint's type modifier parsing to allow all possible combinations of 'rwx' characters. Adding automated tests to the parsing test suite. Reported-by: Jovi Zhang Original-patch-by: Namhyung Kim Signed-off-by: Jiri Olsa Cc: Jovi Zhang Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20120629072254.GA940@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf/tool: Add support to reuse event grammar to parse out terms

2012-06-18T10:13:25Z

We want to reuse the event grammar for parsing aliased terms. The obvious reason is we dont need to add new code when there's already support for this in event grammar. Doing this by adding terms and event start entries into event parse grammar. The grammar forks on the begining based on the starting token, which is supplied via bison interface into the lexer. The lexer then returns the starting token as the first token, thus making the grammar switch accordingly. Currently 2 starting tokens/grammars are supported: PE_START_TERMS, PE_START_EVENTS The PE_START_TERMS related grammar uses 'event_config' part of the grammar for term parsing. Signed-off-by: Jiri Olsa Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1339741902-8449-12-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar