kernel.git/tools/perf/builtin-top.c, branch linux-3.3.y

perf tools: Handle kernels that don't support attr.exclude_{guest,host}

2012-03-03T15:19:56Z

Just fall back to resetting those fields, if set, warning the user that that feature is not available. If guest samples appear they will just be discarded because no struct machine will be found and thus the event will be accounted as not handled and dropped, see 0c09571. Reported-by: Namhyung Kim Tested-by: Joerg Roedel Cc: David Ahern Cc: Frederic Weisbecker Cc: Joerg Roedel Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-vuwxig36mzprl5n7nzvnxxsh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf top: Fix number of samples displayed

2012-01-31T00:29:49Z

In recent versions of perf top, pressing the 'e' key to change the number of displayed samples had no effect. The number of samples was still dictated by the size of the terminal (stdio mode). That was quite annoying because typically only the first dozen samples really matter. This patch fixes this. Cc: David Ahern Cc: Ingo Molnar Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20120130105037.GA5160@quad Signed-off-by: Stephane Eranian Signed-off-by: Arnaldo Carvalho de Melo

perf top: Add error message for EMFILE

2012-01-08T15:26:11Z

When a user tries to open so many events, perf_event_open syscall may fail with EMFILE. Provide advise for that case. Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1325957132-10600-3-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf top: Don't update total_period on process_sample

2012-01-06T17:46:50Z

It will be recalculated at __hists__output_resort, to take into account filters possibly applied by the TUI, etc. Since we do the percent math only for those entries that will appear on the TUI instead of for _all_ the entries at decay time, updating it for each sample makes the entries seem to decay faster when using the navigation keys (since the screen will be refreshed), as we're not coalescing the entries that are being batched to be merged at next resort/decay time, but considering their periods. Bug introduced in 743eb86. Reported-by: Ingo Molnar Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-k0d0rq9a8nqtkqohov8cir72@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf top: Fix a memory leak

2012-01-03T16:37:19Z

The 'buf' should be freed when symbol wasn't found too. Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1325000151-4463-3-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Always do automatic allocation of pollfd and mmap structures

2011-11-29T10:05:52Z

At first tools were required to do that, but while writing the python bindings to simplify the API I made them auto-allocate when needed. This just makes record, stat and top use that auto allocation, simplifying them a bit. Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-iokhcvkzzijr3keioubx8hlq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf top: Stop using globals for tool state

2011-11-28T12:39:44Z

Use its 'perf_tool' base class instead. Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-i33q40wwvk2zna8fd36ex6sm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Rename perf_event_ops to perf_tool

2011-11-28T12:39:28Z

To better reflect that it became the base class for all tools, that must be in each tool struct and where common stuff will be put. Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-qgpc4msetqlwr8y2k7537cxe@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Resolve machine earlier and pass it to perf_event_ops

2011-11-28T12:39:12Z

Reducing the exposure of perf_session further, so that we can use the classes in cases where no perf.data file is created. Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-stua66dcscsezzrcdugvbmvd@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Pass tool context in the the perf_event_ops functions

2011-11-28T12:38:56Z

So that we don't need to have that many globals. Next steps will remove the 'session' pointer, that in most cases is not needed. Then we can rename perf_event_ops to 'perf_tool' that better describes this class hierarchy. Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-wp4djox7x6w1i2bab1pt4xxp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo