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  1. 18 May, 2011 4 commits
    • Steven Rostedt's avatar
      ftrace: Separate hash allocation and assignment · 33dc9b12
      Steven Rostedt authored 
      When filtering, allocate a hash to insert the function records.
After the filtering is complete, assign it to the ftrace_ops structure.

This allows the ftrace_ops structure to have a much smaller array of
hash buckets instead of wasting a lot of memory.

A read only empty_hash is created to be the minimum size that any ftrace_ops
can point to.

When a new hash is created, it has the following steps:

o Allocate a default hash.
o Walk the function records assigning the filtered records to the hash
o Allocate a new hash with the appropriate size buckets
o Move the entries from the default hash to the new hash.
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      33dc9b12
    • Steven Rostedt's avatar
      ftrace: Create a global_ops to hold the filter and notrace hashes · f45948e8
      Steven Rostedt authored 
      Combine the filter and notrace hashes to be accessed by a single entity,
the global_ops. The global_ops is a ftrace_ops structure that is passed
to different functions that can read or modify the filtering of the
function tracer.

The ftrace_ops structure was modified to hold a filter and notrace
hashes so that later patches may allow each ftrace_ops to have its own
set of rules to what functions may be filtered.
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      f45948e8
    • Steven Rostedt's avatar
      ftrace: Use hash instead for FTRACE_FL_FILTER · 1cf41dd7
      Steven Rostedt authored 
      When multiple users are allowed to have their own set of functions
to trace, having the FTRACE_FL_FILTER flag will not be enough to
handle the accounting of those users. Each user will need their own
set of functions.

Replace the FTRACE_FL_FILTER with a filter_hash instead. This is
temporary until the rest of the function filtering accounting
gets in.
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      1cf41dd7
    • Steven Rostedt's avatar
      ftrace: Replace FTRACE_FL_NOTRACE flag with a hash of ignored functions · b448c4e3
      Steven Rostedt authored 
      To prepare for the accounting system that will allow multiple users of
the function tracer, having the FTRACE_FL_NOTRACE as a flag in the
dyn_trace record does not make sense.

All ftrace_ops will soon have a hash of functions they should trace
and not trace. By making a global hash of functions not to trace makes
this easier for the transition.
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      b448c4e3
  3. 17 May, 2011 1 commit
    • Stephane Eranian's avatar
      perf: Fix multi-event parsing bug · 94692349
      Stephane Eranian authored 
      This patch fixes an issue with event parsing.
The following commit appears to have broken the
ability to specify a comma separated list of events:

   commit ceb53fbf
   Author: Ingo Molnar <mingo@elte.hu>
   Date:   Wed Apr 27 04:06:33 2011 +0200

       perf stat: Fail more clearly when an invalid modifier is specified

This patch fixes this while preserving the desired effect:

$ perf stat -e instructions:u,instructions:k ls /dev/null /dev/null

 Performance counter stats for 'ls /dev/null':

            365956 instructions:u           #    0.00  insns per cycle
            731806 instructions:k           #    0.00  insns per cycle

        0.001108862  seconds time elapsed

$ perf stat -e task-clock-msecs true
invalid event modifier: '-msecs'
Run 'perf list' for a list of valid events and modifiers
Signed-off-by: default avatarStephane Eranian <eranian@google.com>
Cc: acme@redhat.com
Cc: peterz@infradead.org
Cc: fweisbec@gmail.com
Link: http://lkml.kernel.org/r/20110517133619.GA6999@quadSigned-off-by: default avatarIngo Molnar <mingo@elte.hu>
      94692349
  5. 12 May, 2011 1 commit
  7. 10 May, 2011 4 commits
  9. 09 May, 2011 27 commits
  11. 08 May, 2011 3 commits
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