perf tools: Change perf_mem__tlb_scnprintf to return nb of displayed bytes

Moving strncat/strcpy calls into scnprintf to easily track
number of displayed bytes. It will be used in follow

perf tools: Change perf_mem__tlb_scnprintf to return nb of displayed bytes

Moving strncat/strcpy calls into scnprintf to easily track
number of displayed bytes. It will be used in following patch.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-10-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf tools: Introduce perf_mem__lck_scnprintf function

Move meminfo's lck display function into mem-events.c object, so it
could be reused later from script code.

Signed-off-by:

perf tools: Introduce perf_mem__lck_scnprintf function

Move meminfo's lck display function into mem-events.c object, so it
could be reused later from script code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-9-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf tools: Introduce perf_mem__snp_scnprintf function

Move meminfo's snp display function into mem-events.c object, so it
could be reused later from script code.

Signed-off-by:

perf tools: Introduce perf_mem__snp_scnprintf function

Move meminfo's snp display function into mem-events.c object, so it
could be reused later from script code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf tools: Introduce perf_mem__lvl_scnprintf function

Move meminfo's lvl display function into mem-events.c object, so it
could be reused later from script code.

Signed-off-by:

perf tools: Introduce perf_mem__lvl_scnprintf function

Move meminfo's lvl display function into mem-events.c object, so it
could be reused later from script code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf tools: Introduce perf_mem__tlb_scnprintf function

Move meminfo's tlb display function into mem-events.c object, so it
could be reused later from script code.

Signed-off-by:

perf tools: Introduce perf_mem__tlb_scnprintf function

Move meminfo's tlb display function into mem-events.c object, so it
could be reused later from script code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf mem: Introduce perf_mem_events__name function

Wrap perf_mem_events[].name into perf_mem_events__name() so we could alter the
events name if needed.

This will be handy when

perf mem: Introduce perf_mem_events__name function

Wrap perf_mem_events[].name into perf_mem_events__name() so we could alter the
events name if needed.

This will be handy when changing latency settings for loads event in following
patch.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf mem record: Check for memory events support

Check if current kernel support available memory events and display the
status within -e list option:

$ perf mem record -e li

perf mem record: Check for memory events support

Check if current kernel support available memory events and display the
status within -e list option:

$ perf mem record -e list
ldlat-loads : available
ldlat-stores : available

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf mem: Add -e record option

Adding -e option for perf mem record command, to be able to specify
memory event directly.

Get list of available events:

$ perf mem rec

perf mem: Add -e record option

Adding -e option for perf mem record command, to be able to specify
memory event directly.

Get list of available events:

$ perf mem record -e list
ldlat-loads
ldlat-stores

Monitor ldlat-loads:
$ perf mem record -e ldlat-loads true

Committer notes:

Further testing:

# perf mem record -e ldlat-loads true
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.020 MB perf.data (10 samples) ]
# perf evlist
cpu/mem-loads,ldlat=30/P
#

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1455525293-8671-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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perf tools: Add monitored events array

It will ease up configuration of memory events and addition of other
memory events in following patches.

Signed-off-by: Jiri Olsa <jolsa@k

perf tools: Add monitored events array

It will ease up configuration of memory events and addition of other
memory events in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1455525293-8671-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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