linux/tools
Adrian Hunter e1791347b5 perf auxtrace: Fix 'instructions' period of zero
Instruction tracing options (i.e. --itrace) include an option for
sampling instructions at an arbitrary period. e.g.

	--itrace=i10us

means make an 'instructions' sample for every 10us of trace.

Currently the logic does not distinguish between a period of
zero and no period being specified at all, so it gets treated
as the default period which is 100000.  That doesn't really
make sense.

Fix it so that zero period is accepted and treated as meaning
"as often as possible".

In the case of Intel PT that is the same as a period of 1 and
a unit of 'instructions' (i.e. --itrace=i1i).

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1443186956-18718-2-git-send-email-adrian.hunter@intel.com
[ Add a few lines describing this in the Documentation/intel-pt.txt file ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-09-28 15:50:56 -03:00
..
arch tools include: Add basic atomic.h implementation from the kernel sources 2015-05-08 16:11:05 -03:00
build tools build: Build fixdep helper from perf and basic libs 2015-09-28 15:50:55 -03:00
cgroup
firewire
hv tools: hv: add a python script lsvmbus to list VMBus devices 2015-08-05 11:44:29 -07:00
iio iio: lsiio: fix error code handling error 2015-08-12 19:26:22 +01:00
include tools: Add err.h with ERR_PTR PTR_ERR interface 2015-09-15 09:48:32 -03:00
laptop/freefall Move freefall program from Documentation/ to tools/ 2015-06-08 16:42:07 -06:00
lguest tools/lguest: Clean up include dir 2015-08-26 06:12:35 +02:00
lib tools build: Build fixdep helper from perf and basic libs 2015-09-28 15:50:55 -03:00
net bpf_jit_disasm: also support reading jit dump from file 2015-07-31 15:13:14 -07:00
nfsd
perf perf auxtrace: Fix 'instructions' period of zero 2015-09-28 15:50:56 -03:00
power Power management and ACPI material for v4.3-rc1 2015-09-01 19:45:46 -07:00
scripts
testing membarrier: clean up selftest 2015-09-22 15:09:53 -07:00
thermal/tmon tools/thermal: tmon: fixed the 'make install' command 2015-05-09 13:36:58 +08:00
time
usb tools: ffs-aio-example: use endpoint addresses from descriptors 2015-01-15 09:41:49 -06:00
virtio tools/virtio: propagate V=X to kernel build 2015-09-16 12:48:07 +03:00
vm tools vm: Fix build due to removal of tools/lib/api/fs/debugfs.h 2015-09-22 22:42:39 -03:00
Makefile Staging driver patches for 4.2-rc1 2015-06-26 15:46:08 -07:00