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 04/30 v3] add notrace annotations to vsyscall.
Date: Tue, 15 Jan 2008 15:49:11 -0500 [thread overview]
Message-ID: <20080115205021.934848948@goodmis.org> (raw)
In-Reply-To: 20080115204907.838227723@goodmis.org
[-- Attachment #1: mcount-add-x86-vdso-notrace-annotations.patch --]
[-- Type: text/plain, Size: 4578 bytes --]
Add the notrace annotations to some of the vsyscall functions.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
arch/x86/kernel/vsyscall_64.c | 3 ++-
arch/x86/vdso/vclock_gettime.c | 15 ++++++++-------
arch/x86/vdso/vgetcpu.c | 3 ++-
include/asm-x86/vsyscall.h | 3 ++-
4 files changed, 14 insertions(+), 10 deletions(-)
Index: linux-compile.git/arch/x86/kernel/vsyscall_64.c
===================================================================
--- linux-compile.git.orig/arch/x86/kernel/vsyscall_64.c 2008-01-14 13:14:00.000000000 -0500
+++ linux-compile.git/arch/x86/kernel/vsyscall_64.c 2008-01-14 14:57:53.000000000 -0500
@@ -42,7 +42,8 @@
#include <asm/topology.h>
#include <asm/vgtod.h>
-#define __vsyscall(nr) __attribute__ ((unused,__section__(".vsyscall_" #nr)))
+#define __vsyscall(nr) \
+ __attribute__ ((unused, __section__(".vsyscall_" #nr))) notrace
#define __syscall_clobber "r11","rcx","memory"
#define __pa_vsymbol(x) \
({unsigned long v; \
Index: linux-compile.git/arch/x86/vdso/vclock_gettime.c
===================================================================
--- linux-compile.git.orig/arch/x86/vdso/vclock_gettime.c 2008-01-14 13:14:00.000000000 -0500
+++ linux-compile.git/arch/x86/vdso/vclock_gettime.c 2008-01-14 13:14:13.000000000 -0500
@@ -24,7 +24,7 @@
#define gtod vdso_vsyscall_gtod_data
-static long vdso_fallback_gettime(long clock, struct timespec *ts)
+notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
{
long ret;
asm("syscall" : "=a" (ret) :
@@ -32,7 +32,7 @@ static long vdso_fallback_gettime(long c
return ret;
}
-static inline long vgetns(void)
+notrace static inline long vgetns(void)
{
long v;
cycles_t (*vread)(void);
@@ -41,7 +41,7 @@ static inline long vgetns(void)
return (v * gtod->clock.mult) >> gtod->clock.shift;
}
-static noinline int do_realtime(struct timespec *ts)
+notrace static noinline int do_realtime(struct timespec *ts)
{
unsigned long seq, ns;
do {
@@ -55,7 +55,8 @@ static noinline int do_realtime(struct t
}
/* Copy of the version in kernel/time.c which we cannot directly access */
-static void vset_normalized_timespec(struct timespec *ts, long sec, long nsec)
+notrace static void
+vset_normalized_timespec(struct timespec *ts, long sec, long nsec)
{
while (nsec >= NSEC_PER_SEC) {
nsec -= NSEC_PER_SEC;
@@ -69,7 +70,7 @@ static void vset_normalized_timespec(str
ts->tv_nsec = nsec;
}
-static noinline int do_monotonic(struct timespec *ts)
+notrace static noinline int do_monotonic(struct timespec *ts)
{
unsigned long seq, ns, secs;
do {
@@ -83,7 +84,7 @@ static noinline int do_monotonic(struct
return 0;
}
-int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
+notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
{
if (likely(gtod->sysctl_enabled && gtod->clock.vread))
switch (clock) {
@@ -97,7 +98,7 @@ int __vdso_clock_gettime(clockid_t clock
int clock_gettime(clockid_t, struct timespec *)
__attribute__((weak, alias("__vdso_clock_gettime")));
-int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
+notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
{
long ret;
if (likely(gtod->sysctl_enabled && gtod->clock.vread)) {
Index: linux-compile.git/arch/x86/vdso/vgetcpu.c
===================================================================
--- linux-compile.git.orig/arch/x86/vdso/vgetcpu.c 2008-01-14 13:14:00.000000000 -0500
+++ linux-compile.git/arch/x86/vdso/vgetcpu.c 2008-01-14 13:14:13.000000000 -0500
@@ -13,7 +13,8 @@
#include <asm/vgtod.h>
#include "vextern.h"
-long __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
+notrace long
+__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
{
unsigned int dummy, p;
Index: linux-compile.git/include/asm-x86/vsyscall.h
===================================================================
--- linux-compile.git.orig/include/asm-x86/vsyscall.h 2008-01-14 13:14:00.000000000 -0500
+++ linux-compile.git/include/asm-x86/vsyscall.h 2008-01-14 13:14:13.000000000 -0500
@@ -24,7 +24,8 @@ enum vsyscall_num {
((unused, __section__ (".vsyscall_gtod_data"),aligned(16)))
#define __section_vsyscall_clock __attribute__ \
((unused, __section__ (".vsyscall_clock"),aligned(16)))
-#define __vsyscall_fn __attribute__ ((unused,__section__(".vsyscall_fn")))
+#define __vsyscall_fn \
+ __attribute__ ((unused, __section__(".vsyscall_fn"))) notrace
#define VGETCPU_RDTSCP 1
#define VGETCPU_LSL 2
--
next prev parent reply other threads:[~2008-01-15 20:57 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 ` Steven Rostedt [this message]
2008-01-15 20:49 ` [RFC PATCH 05/30 v3] add notrace annotations for NMI routines Steven Rostedt
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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