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Groups > linux.kernel > #1600823

[PATCH 18/19] doc: trace/kprobes: add information about NOKPROBE_SYMBOL

From Arnaldo Carvalho de Melo <acme@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 18/19] doc: trace/kprobes: add information about NOKPROBE_SYMBOL
Date 2017-03-14 20:00 +0100
Message-ID <tkZPR-4ju-55@gated-at.bofh.it> (permalink)
References <tkZPP-4ju-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>

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>
---
 Documentation/trace/kprobetrace.txt | 5 +++--
 1 file 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.
-- 
2.9.3

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Thread

[GIT PULL 00/19] perf/core improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 17/19] perf powerpc: Choose local entry point with kretprobes Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 12/19] perf script: Add script print support for namespace events Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 16/19] perf kretprobes: Offset from reloc_sym if kernel supports it Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 04/19] perf tools: Missing c2c command in command-list Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 07/19] perf report: Document +field style argument support for --field option Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 05/19] perf tools: Ignore generated files pmu-events/{jevents,pmu-events.c} for git Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 06/19] perf sort: Fix segfault with basic block 'cycles' sort dimension Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 19/19] kprobes: Convert kprobe_exceptions_notify to use NOKPROBE_SYMBOL Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 14/19] perf sched timehist: Add --next option Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 13/19] perf tools: Add 'cgroup_id' sort order keyword Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 03/19] perf c2c: Fix display bug when using pipe Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 01/19] perf report: Hide tip message when -q option is given Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 02/19] perf c2c: Clarify help message of --stats option Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 18/19] doc: trace/kprobes: add information about NOKPROBE_SYMBOL Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 10/19] perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 08/19] perf hists browser: Fix typo in function switch_data_file Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  [PATCH 15/19] perf probe: Factor out the ftrace README scanning Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-14 20:00 +0100
  Re: [GIT PULL 00/19] perf/core improvements and fixes Ingo Molnar <mingo@kernel.org> - 2017-03-15 19:40 +0100

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