Steven Rostedt (Red Hat) e57cbaf0eb tracing: Do not have 'comm' filter override event 'comm' field ... Commit 9f61668073 "tracing: Allow triggers to filter for CPU ids and process names" added a 'comm' filter that will filter events based on the current tasks struct 'comm'. But this now hides the ability to filter events that have a 'comm' field too. For example, sched_migrate_task trace event. That has a 'comm' field of the task to be migrated. echo 'comm == "bash"' > events/sched_migrate_task/filter will now filter all sched_migrate_task events for tasks named "bash" that migrates other tasks (in interrupt context), instead of seeing when "bash" itself gets migrated. This fix requires a couple of changes. 1) Change the look up order for filter predicates to look at the events fields before looking at the generic filters. 2) Instead of basing the filter function off of the "comm" name, have the generic "comm" filter have its own filter_type (FILTER_COMM). Test against the type instead of the name to assign the filter function. 3) Add a new "COMM" filter that works just like "comm" but will filter based on the current task, even if the trace event contains a "comm" field. Do the same for "cpu" field, adding a FILTER_CPU and a filter "CPU". Cc: stable@vger.kernel.org # v4.3+ Fixes: 9f61668073 "tracing: Allow triggers to filter for CPU ids and process names" Reported-by: Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2016-03-04 09:57:10 -05:00
..
acpi
asm-generic
clocksource
crypto
drm	Merge branch 'drm-fixes-mst' of git://people.freedesktop.org/~airlied/linux into drm-fixes	2016-02-05 15:24:17 +10:00
dt-bindings
keys
kvm
linux	tracing: Do not have 'comm' filter override event 'comm' field	2016-03-04 09:57:10 -05:00
math-emu
media
memory
misc
net	vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices	2016-02-10 05:50:03 -05:00
pcmcia
ras
rdma
rxrpc
scsi
soc
sound
target	target/transport: add flag to indicate CPU Affinity is observed	2016-02-10 23:08:55 -08:00
trace
uapi
video
xen
Kbuild