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authorNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>2017-03-08 22:34:14 +0530
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-03-14 15:17:40 -0300
commitc1ac094d5061e757624a47217d2195ba24a75450 (patch)
treeb086f38632adec636b977734f22431432ece268b /Documentation/trace
parent44ca9341f65295c56e904cce4c84f5778f5c8537 (diff)
downloadtalos-obmc-linux-c1ac094d5061e757624a47217d2195ba24a75450.tar.gz
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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: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Masami 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.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'Documentation/trace')
-rw-r--r--Documentation/trace/kprobetrace.txt5
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt
index 41ef9d8efe95..5ea85059db3b 100644
--- a/Documentation/trace/kprobetrace.txt
+++ b/Documentation/trace/kprobetrace.txt
@@ -8,8 +8,9 @@ Overview
--------
These events are similar to tracepoint based events. Instead of Tracepoint,
this is based on kprobes (kprobe and kretprobe). So it can probe wherever
-kprobes can probe (this means, all functions body except for __kprobes
-functions). Unlike the Tracepoint based event, this can be added and removed
+kprobes can probe (this means, all functions except those with
+__kprobes/nokprobe_inline annotation and those marked NOKPROBE_SYMBOL).
+Unlike the Tracepoint based event, this can be added and removed
dynamically, on the fly.
To enable this feature, build your kernel with CONFIG_KPROBE_EVENTS=y.
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