From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org,
"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 18/19] doc: trace/kprobes: add information about NOKPROBE_SYMBOL
Date: Tue, 14 Mar 2017 15:50:22 -0300 [thread overview]
Message-ID: <20170314185023.31303-19-acme@kernel.org> (raw)
In-Reply-To: <20170314185023.31303-1-acme@kernel.org>
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
next prev parent reply other threads:[~2017-03-14 18:54 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-14 18:50 [GIT PULL 00/19] perf/core improvements and fixes Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 01/19] perf report: Hide tip message when -q option is given Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 02/19] perf c2c: Clarify help message of --stats option Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 03/19] perf c2c: Fix display bug when using pipe Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 04/19] perf tools: Missing c2c command in command-list Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 05/19] perf tools: Ignore generated files pmu-events/{jevents,pmu-events.c} for git Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 06/19] perf sort: Fix segfault with basic block 'cycles' sort dimension Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 07/19] perf report: Document +field style argument support for --field option Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 08/19] perf hists browser: Fix typo in function switch_data_file Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 09/19] perf: Add PERF_RECORD_NAMESPACES to include namespaces related info Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 10/19] perf tools: " Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 11/19] perf record: Synthesize namespace events for current processes Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 12/19] perf script: Add script print support for namespace events Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 13/19] perf tools: Add 'cgroup_id' sort order keyword Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 14/19] perf sched timehist: Add --next option Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 15/19] perf probe: Factor out the ftrace README scanning Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 16/19] perf kretprobes: Offset from reloc_sym if kernel supports it Arnaldo Carvalho de Melo
2017-03-14 18:50 ` [PATCH 17/19] perf powerpc: Choose local entry point with kretprobes Arnaldo Carvalho de Melo
2017-03-14 18:50 ` Arnaldo Carvalho de Melo [this message]
2017-03-14 18:50 ` [PATCH 19/19] kprobes: Convert kprobe_exceptions_notify to use NOKPROBE_SYMBOL Arnaldo Carvalho de Melo
2017-03-15 18:29 ` [GIT PULL 00/19] perf/core improvements and fixes Ingo Molnar
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