Commit c1ac094d authored by Naveen N. Rao's avatar Naveen N. Rao Committed by Arnaldo Carvalho de Melo

doc: trace/kprobes: add information about NOKPROBE_SYMBOL

Update kprobe tracer documentation to also mention that
NOKPROBE_SYMBOL() and nokprobe_inline add symbols to the kprobes
blacklist.
Signed-off-by: default avatarNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/d924e20de099579ace4286e610304f054cd798db.1488991670.git.naveen.n.rao@linux.vnet.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 44ca9341
...@@ -8,8 +8,9 @@ Overview ...@@ -8,8 +8,9 @@ Overview
-------- --------
These events are similar to tracepoint based events. Instead of Tracepoint, These events are similar to tracepoint based events. Instead of Tracepoint,
this is based on kprobes (kprobe and kretprobe). So it can probe wherever this is based on kprobes (kprobe and kretprobe). So it can probe wherever
kprobes can probe (this means, all functions body except for __kprobes kprobes can probe (this means, all functions except those with
functions). Unlike the Tracepoint based event, this can be added and removed __kprobes/nokprobe_inline annotation and those marked NOKPROBE_SYMBOL).
Unlike the Tracepoint based event, this can be added and removed
dynamically, on the fly. dynamically, on the fly.
To enable this feature, build your kernel with CONFIG_KPROBE_EVENTS=y. To enable this feature, build your kernel with CONFIG_KPROBE_EVENTS=y.
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