linux-kernel - [PATCH v3 0/2] ftrace: Add task_comm support for trace

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 25 May 2009 18:03:20 +0800
From:	Zhaolei <zhaolei@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tom Zanussi <tzanussi@...il.com>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 0/2] ftrace: Add task_comm support for trace_event

Hello,

Ingo pointed out that v2 patch still cause kernel compile fail:
kernel/built-in.o: In function `ftrace_event_enable_disable':
trace_events.c:(.text+0x4df08): undefined reference to `tracing_stop_cmdline_record'
trace_events.c:(.text+0x4df1f): undefined reference to `tracing_start_cmdline_record'

It is because CONFIG_TRACING is on(But CONFIG_FTRACE is off),
which compiles trace_events but leaves trace_sched_switch.
(Which is different with problem that I fixed in v1->v2)

Changelog:
v1->v2: Update Kconfig to select CONTEXT_SWITCH_TRACER in ENABLE_EVENT_TRACING
v2->v3: v2 can solve problem that caused by config EVENT_TRACING alone,
        but when CONFIG_FTRACE is off and CONFIG_TRACING is selected by other
        config, compile fail happened again. This version solves it.

Thanks
Zhaolei

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/