Namhyung Kim 78b83e8b12 perf ftrace: Add option for function filtering ... The -T/--trace-funcs and -N/--notrace-funcs options are to specify functions to enable/disable tracing dynamically. The -G/--graph-funcs and -g/--nograph-funcs options are to set filters for function graph tracer. For example, to trace fault handling functions only: $ sudo perf ftrace -T *fault hello 0) | __do_page_fault() { 0) | handle_mm_fault() { 0) 2.117 us | __handle_mm_fault(); 0) 3.627 us | } 0) 7.811 us | } 0) | __do_page_fault() { 0) | handle_mm_fault() { 0) 2.014 us | __handle_mm_fault(); 0) 2.424 us | } 0) 2.951 us | } ... To trace all functions executed in __do_page_fault: $ sudo perf ftrace -G __do_page_fault hello 2) | __do_page_fault() { 3) 0.060 us | down_read_trylock(); 3) | find_vma() { 3) 0.075 us | vmacache_find(); 3) 0.053 us | vmacache_update(); 3) 1.246 us | } 3) | handle_mm_fault() { 3) 0.063 us | __rcu_read_lock(); 3) 0.056 us | mem_cgroup_from_task(); 3) 0.057 us | __rcu_read_unlock(); 3) | __handle_mm_fault() { 3) | filemap_map_pages() { 3) 0.058 us | __rcu_read_lock(); 3) | alloc_set_pte() { ... But don't want to show details in handle_mm_fault: $ sudo perf ftrace -G __do_page_fault -g handle_mm_fault hello 3) | __do_page_fault() { 3) 0.049 us | down_read_trylock(); 3) | find_vma() { 3) 0.048 us | vmacache_find(); 3) 0.041 us | vmacache_update(); 3) 0.680 us | } 3) 0.036 us | up_read(); 3) 4.547 us | } /* __do_page_fault */ ... Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170618142302.25390-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2017-06-19 22:05:53 -03:00
..
accounting	…
arch	tools/include: Sync kernel ABI headers with tooling headers	2017-05-24 09:00:21 +02:00
build	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-05-15 15:50:49 -07:00
cgroup	…
firewire	…
gpio	gpio-hammer: fix make consumer_label suitable to work on gpio-nails	2017-01-26 16:29:09 +01:00
hv	tools: hv: Add clean up function for Ubuntu config	2017-03-06 17:10:40 -08:00
iio	…
include	tools: Adopt __aligned from kernel sources	2017-06-19 15:27:08 -03:00
kvm/kvm_stat	tools/kvm_stat: add '%Total' column	2017-03-29 12:01:33 +02:00
laptop	…
leds	tools/leds: Add led_hw_brightness_mon program	2017-02-14 22:20:23 +01:00
lguest	Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 20:51:12 -07:00
lib	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-05-15 15:50:49 -07:00
net	tools: bpf_jit_disasm: Add option to dump JIT image to a file.	2017-04-13 13:04:03 -04:00
nfsd	…
objtool	objtool: Drop ARRAY_SIZE() definition, tools/include/linux/kernel.h has it now	2017-04-19 13:01:44 -03:00
pci	tools: PCI: Add sample test script to invoke pcitest	2017-04-28 10:23:20 -05:00
pcmcia	…
perf	perf ftrace: Add option for function filtering	2017-06-19 22:05:53 -03:00
power	Merge branches 'acpi-button' and 'acpi-tools'	2017-05-22 20:29:06 +02:00
scripts	tools arch x86: Include asm/cmpxchg.h	2017-03-03 19:07:13 -03:00
spi	spi: spidev_test: add option to continuously transfer data	2017-03-21 18:44:40 +00:00
testing	powerpc fixes for 4.12 #4	2017-05-27 09:28:34 -07:00
thermal/tmon	…
time	…
usb	usb: fix some references for /proc/bus/usb	2017-04-18 16:54:19 +02:00
virtio	tools/virtio: fix spelling mistake: "wakeus" -> "wakeups"	2017-05-09 16:43:24 +03:00
vm	tools/vm: add missing Makefile rules	2017-02-22 16:41:26 -08:00
Makefile	tools/kvm: fix top level makefile	2017-05-03 16:30:25 +02:00