linux-stable.git/tools/perf/util/string.c, branch v4.12.2

perf tools: Move extra string util functions to util/string2.h

2017-04-19T16:01:51+00:00

Moving them from util.h, where they don't belong. Since libc already
have string.h, name it slightly differently, as string2.h.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-eh3vz5sqxsrdd8lodoro4jrw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move sane ctype stuff from util.h to sane_ctype.h

2017-04-19T16:01:48+00:00

More stuff that came from git, out of the hodge-podge that is util.h

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-e3lana4gctz3ub4hn4y29hkw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf string: Simplify ltrim() implementation

2017-04-11T18:23:39+00:00

We don't need to use strlen(), a var, or check for the end explicitely,
isspace('\0') is false:

  [acme@jouet c]$ cat ltrim.c
  #include 
  #include 

  static char *ltrim(char *s)
  {
	  while (isspace(*s))
		  ++s;
	  return s;
  }

  int main(void)
  {
	  printf("ltrim(\"\")='%s'\n", ltrim(""));
	  return 0;
  }
  [acme@jouet c]$ ./ltrim
  ltrim("")=''
  [acme@jouet c]$

Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Taeung Song 
Link: http://lkml.kernel.org/n/tip-w3nk0x3pai2vojk2ab6kdvaw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

tools string: Use __fallthrough in perf_atoll()

2017-02-08T20:31:01+00:00

The implicit fall through case label here is intended, so let us inform
that to gcc >= 7:

    CC       /tmp/build/perf/util/string.o
  util/string.c: In function 'perf_atoll':
  util/string.c:22:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
      if (*p)
         ^
  util/string.c:24:3: note: here
     case '\0':
     ^~~~

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Wang Nan 
Link: http://lkml.kernel.org/n/tip-0ophb30v9apkk6o95el0rqlq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf list: Make vendor event matching case insensitive

2016-10-24T14:07:46+00:00

Make the 'perf list' glob matching for vendor events case insensitive.
This allows to use the upper case vendor events with perf list too.

Now the following works:

  % perf list LONGEST_LAT

  ...

  cache:
    longest_lat_cache.miss
         [Core-originated cacheable demand requests missed LLC]
    longest_lat_cache.reference
         [Core-originated cacheable demand requests that refer to LLC]

Signed-off-by: Andi Kleen 
Suggested-by: Ingo Molnar 
Tested-by: Arnaldo Carvalho de Melo 
Cc: Jiri Olsa 
Link: http://lkml.kernel.org/r/1476899402-31460-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo

tools: Adopt memdup() from tools/perf, moving it to tools/lib/string.c

2015-11-18T20:51:02+00:00

That will contain more string functions with counterparts, sometimes
verbatim copies, in the kernel.

Acked-by: Wang Nan 
Cc: Adrian Hunter 
Cc: Alexey Dobriyan 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: http://lkml.kernel.org/n/tip-rah6g97kn21vfgmlramorz6o@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Asprintf like functions to format integer filter expression

2015-07-06T13:21:46+00:00

  char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints);
  char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints);

Example of output formatted with those functions:

  # ./tp_filter 6 12 2015
  asprintf_expr_in_ints:     id == 6 || id == 12 || id == 2015
  asprintf_expr_not_in_ints: id != 6 && id != 12 && id != 2015
  #

It'll be used with, for instance, perf_evsel__set_filter_in_ints(), that
will be used in turn to ask the kernel to filter out all raw_syscalls:*
except for the ones specified by the user via:

 $ perf trace -e some,list,of,syscalls

Cc: Adrian Hunter 
Cc: Borislav Petkov 
Cc: David Ahern 
Cc: Don Zickus 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-jt07vfp6bd8y50c05j1t7hrn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

Revert "perf tools: Default to cpu// for events v5"

2014-10-15T19:04:33+00:00

This reverts commit 50e200f07948 ("perf tools: Default to cpu// for
events v5")

The fixup cannot handle the case that
new style format(which without //) mixed with
other different formats.

For example,
group events with new style format: {mem-stores,mem-loads}
some hardware event + new style event: cycles,mem-loads
Cache event + new style event: LLC-loads,mem-loads
Raw event + new style event:
cpu/event=0xc8,umask=0x08/,mem-loads
old style event and new stytle mixture: mem-stores,cpu/mem-loads/

Signed-off-by: Kan Liang 
Acked-by: Jiri Olsa 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Link: http://lkml.kernel.org/r/1412694532-23391-2-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

saner perf_atoll()

2014-10-09T06:39:10+00:00

That loop in there is both anti-idiomatic *and* completely pointless.
strtoll() is there for purpose; use it and compare what's left with
acceptable suffices.

Signed-off-by: Al Viro

perf tools: Use zfree to help detect use after free bugs

2013-12-27T20:08:19+00:00

Several areas already used this technique, so do some audit to
consistently use it elsewhere.

Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-9sbere0kkplwe45ak6rk4a1f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo