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Commit 0fdc7e67 authored by Mike Galbraith's avatar Mike Galbraith Committed by Peter Zijlstra
Browse files

perf_counter tools: Give perf top inherit option 



Currently, perf top -p only tracks the pid provided, which isn't very useful
for watching forky loads, so give it an inherit option.

Signed-off-by: default avatarMike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1248165036.9795.10.camel@marge.simson.net>
parent d20ff6bd

tools/perf/builtin-top.c

+5 −1
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ static u64 count_filter = 5; 
static int			print_entries			= 15;



static int			target_pid			= -1;

static int			inherit				=  0;

static int			profile_cpu			= -1;

static int			nr_cpus				=  0;

static unsigned int		realtime_prio			=  0;
@@ -549,7 +550,7 @@ int group_fd; 
static void start_counter(int i, int counter)

{

	struct perf_counter_attr *attr;

	unsigned int cpu;

	int cpu;



	cpu = profile_cpu;

	if (target_pid == -1 && profile_cpu == -1)
@@ -559,6 +560,7 @@ static void start_counter(int i, int counter) 


	attr->sample_type	= PERF_SAMPLE_IP | PERF_SAMPLE_TID;

	attr->freq		= freq;

	attr->inherit		= (cpu < 0) && inherit;



try_again:

	fd[i][counter] = sys_perf_counter_open(attr, target_pid, cpu, group_fd, 0);
@@ -685,6 +687,8 @@ static const struct option options[] = { 
		    "only display functions with more events than this"),

	OPT_BOOLEAN('g', "group", &group,

			    "put the counters into a counter group"),

	OPT_BOOLEAN('i', "inherit", &inherit,

		    "child tasks inherit counters"),

	OPT_STRING('s', "sym-filter", &sym_filter, "pattern",

		    "only display symbols matchig this pattern"),

	OPT_BOOLEAN('z', "zero", &zero,