From: Steven Rostedt <rostedt@goodmis.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Christoph Hellwig <hch@infradead.org>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
Gregory Haskins <ghaskins@novell.com>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Thomas Gleixner <tglx@linutronix.de>,
Tim Bird <tim.bird@am.sony.com>, Sam Ravnborg <sam@ravnborg.org>,
"Frank Ch. Eigler" <fche@redhat.com>,
Jan Kiszka <jan.kiszka@siemens.com>,
Steven Rostedt <srostedt@redhat.com>
Subject: [RFC PATCH 05/30 v3] add notrace annotations for NMI routines
Date: Tue, 15 Jan 2008 15:49:12 -0500 [thread overview]
Message-ID: <20080115205022.097196207@goodmis.org> (raw)
In-Reply-To: 20080115204907.838227723@goodmis.org
[-- Attachment #1: mcount-nmi-notrace-annotations.patch --]
[-- Type: text/plain, Size: 2475 bytes --]
This annotates NMI functions with notrace. Some tracers may be able
to live with this, but some cannot. So we turn off NMI tracing.
One solution might be to make a notrace_nmi which would only turn
off NMI tracing if a trace utility needed it off.
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
arch/x86/kernel/nmi_32.c | 2 +-
arch/x86/kernel/nmi_64.c | 2 +-
arch/x86/kernel/traps_32.c | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
Index: linux-compile.git/arch/x86/kernel/nmi_32.c
===================================================================
--- linux-compile.git.orig/arch/x86/kernel/nmi_32.c 2008-01-14 13:13:58.000000000 -0500
+++ linux-compile.git/arch/x86/kernel/nmi_32.c 2008-01-14 13:14:13.000000000 -0500
@@ -323,7 +323,7 @@ EXPORT_SYMBOL(touch_nmi_watchdog);
extern void die_nmi(struct pt_regs *, const char *msg);
-__kprobes int nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
+notrace __kprobes int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
{
/*
Index: linux-compile.git/arch/x86/kernel/nmi_64.c
===================================================================
--- linux-compile.git.orig/arch/x86/kernel/nmi_64.c 2008-01-14 13:13:58.000000000 -0500
+++ linux-compile.git/arch/x86/kernel/nmi_64.c 2008-01-14 13:14:13.000000000 -0500
@@ -314,7 +314,7 @@ void touch_nmi_watchdog(void)
touch_softlockup_watchdog();
}
-int __kprobes nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
+notrace __kprobes int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
{
int sum;
int touched = 0;
Index: linux-compile.git/arch/x86/kernel/traps_32.c
===================================================================
--- linux-compile.git.orig/arch/x86/kernel/traps_32.c 2008-01-14 13:13:58.000000000 -0500
+++ linux-compile.git/arch/x86/kernel/traps_32.c 2008-01-14 13:14:13.000000000 -0500
@@ -722,7 +722,7 @@ void __kprobes die_nmi(struct pt_regs *r
do_exit(SIGSEGV);
}
-static __kprobes void default_do_nmi(struct pt_regs * regs)
+static notrace __kprobes void default_do_nmi(struct pt_regs *regs)
{
unsigned char reason = 0;
@@ -762,7 +762,7 @@ static __kprobes void default_do_nmi(str
static int ignore_nmis;
-fastcall __kprobes void do_nmi(struct pt_regs * regs, long error_code)
+notrace fastcall __kprobes void do_nmi(struct pt_regs *regs, long error_code)
{
int cpu;
--
next prev parent reply other threads:[~2008-01-15 20:54 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-15 20:49 [RFC PATCH 00/30 v3] mcount and latency tracing utility -v3 Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 01/30 v3] Add basic support for gcc profiler instrumentation Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 02/30 v3] Annotate core code that should not be traced Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 03/30 v3] x86_64: notrace annotations Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 04/30 v3] add notrace annotations to vsyscall Steven Rostedt
2008-01-15 20:49 ` Steven Rostedt [this message]
2008-01-15 20:49 ` [RFC PATCH 06/30 v3] mcount based trace in the form of a header file library Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 07/30 v3] tracer add debugfs interface Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 08/30 v3] mcount tracer output file Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 09/30 v3] mcount tracer show task comm and pid Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 10/30 v3] Add a symbol only trace output Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 11/30 v3] Reset the tracer when started Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 12/30 v3] separate out the percpu date into a percpu struct Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 13/30 v3] handle accurate time keeping over long delays Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 14/30 v3] ppc clock accumulate fix Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 15/30 v3] Fixup merge between xtime_cache and timkkeeping starvation fix Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 16/30 v3] time keeping add cycle_raw for actual incrementation Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 17/30 v3] initialize the clock source to jiffies clock Steven Rostedt
2008-01-15 21:14 ` Mathieu Desnoyers
2008-01-15 21:27 ` Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 18/30 v3] add get_monotonic_cycles Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 19/30 v3] add notrace annotations to timing events Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 20/30 v3] Add timestamps to tracer Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 21/30 v3] Sort trace by timestamp Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 22/30 v3] speed up the output of the tracer Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 23/30 v3] Add latency_trace format tor tracer Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 24/30 v3] Split out specific tracing functions Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 25/30 v3] Trace irq disabled critical timings Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 26/30 v3] Add context switch marker to sched.c Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 27/30 v3] Add tracing of context switches Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 28/30 v3] Generic command line storage Steven Rostedt
2008-01-15 21:30 ` Mathieu Desnoyers
2008-01-15 22:15 ` Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 29/30 v3] make varaible size buffers for traces Steven Rostedt
2008-01-15 20:49 ` [RFC PATCH 30/30 v3] trace preempt off critical timings Steven Rostedt
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