From: Frederic Weisbecker <fweisbec@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Paul Mackerras <paulus@samba.org>,
Will Deacon <will.deacon@arm.com>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Stephane Eranian <eranian@google.com>,
David Miller <davem@davemloft.net>,
Paul Mundt <lethal@linux-sh.org>, Borislav Petkov <bp@amd64.org>
Subject: [PATCH 4/7] perf: Factorize callchain context handling
Date: Thu, 19 Aug 2010 01:46:13 +0200 [thread overview]
Message-ID: <1282175176-6363-5-git-send-regression-fweisbec@gmail.com> (raw)
In-Reply-To: <1282175176-6363-1-git-send-regression-fweisbec@gmail.com>
Store the kernel and user contexts from the generic layer instead
of archs, this gathers some repetitive code.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Tested-by: Will Deacon <will.deacon@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: David Miller <davem@davemloft.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Borislav Petkov <bp@amd64.org>
---
arch/arm/kernel/perf_event.c | 2 --
arch/powerpc/kernel/perf_callchain.c | 3 ---
arch/sh/kernel/perf_callchain.c | 1 -
arch/sparc/kernel/perf_event.c | 3 ---
arch/x86/kernel/cpu/perf_event.c | 2 --
kernel/perf_event.c | 5 ++++-
6 files changed, 4 insertions(+), 12 deletions(-)
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 0e3bbdb..64ca8c3 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -3049,7 +3049,6 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
struct frame_tail *tail;
- perf_callchain_store(entry, PERF_CONTEXT_USER);
tail = (struct frame_tail *)regs->ARM_fp - 1;
@@ -3076,7 +3075,6 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
struct stackframe fr;
- perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
fr.fp = regs->ARM_fp;
fr.sp = regs->ARM_sp;
fr.lr = regs->ARM_lr;
diff --git a/arch/powerpc/kernel/perf_callchain.c b/arch/powerpc/kernel/perf_callchain.c
index f7a85ed..d05ae42 100644
--- a/arch/powerpc/kernel/perf_callchain.c
+++ b/arch/powerpc/kernel/perf_callchain.c
@@ -57,7 +57,6 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
lr = regs->link;
sp = regs->gpr[1];
- perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_store(entry, regs->nip);
if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD))
@@ -234,7 +233,6 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
next_ip = regs->nip;
lr = regs->link;
sp = regs->gpr[1];
- perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, next_ip);
for (;;) {
@@ -435,7 +433,6 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
next_ip = regs->nip;
lr = regs->link;
sp = regs->gpr[1];
- perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, next_ip);
while (entry->nr < PERF_MAX_STACK_DEPTH) {
diff --git a/arch/sh/kernel/perf_callchain.c b/arch/sh/kernel/perf_callchain.c
index ef076a9..d5ca1ef 100644
--- a/arch/sh/kernel/perf_callchain.c
+++ b/arch/sh/kernel/perf_callchain.c
@@ -47,7 +47,6 @@ static const struct stacktrace_ops callchain_ops = {
void
perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
- perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_store(entry, regs->pc);
unwind_stack(NULL, regs, NULL, &callchain_ops, entry);
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 460162d..4bc4029 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -1293,7 +1293,6 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry,
stack_trace_flush();
- perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_store(entry, regs->tpc);
ksp = regs->u_regs[UREG_I6];
@@ -1337,7 +1336,6 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
{
unsigned long ufp;
- perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, regs->tpc);
ufp = regs->u_regs[UREG_I6] + STACK_BIAS;
@@ -1360,7 +1358,6 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
{
unsigned long ufp;
- perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, regs->tpc);
ufp = regs->u_regs[UREG_I6] & 0xffffffffUL;
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 39f8421..a3c9222 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1608,7 +1608,6 @@ static const struct stacktrace_ops backtrace_ops = {
void
perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
{
- perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_store(entry, regs->ip);
dump_trace(NULL, regs, NULL, regs->bp, &backtrace_ops, entry);
@@ -1660,7 +1659,6 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
fp = (void __user *)regs->bp;
- perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_store(entry, regs->ip);
if (perf_callchain_user32(regs, entry))
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 02efde6..615d024 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -2969,6 +2969,7 @@ static struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
entry->nr = 0;
if (!user_mode(regs)) {
+ perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
perf_callchain_kernel(entry, regs);
if (current->mm)
regs = task_pt_regs(current);
@@ -2976,8 +2977,10 @@ static struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
regs = NULL;
}
- if (regs)
+ if (regs) {
+ perf_callchain_store(entry, PERF_CONTEXT_USER);
perf_callchain_user(entry, regs);
+ }
return entry;
}
--
1.6.2.3
next prev parent reply other threads:[~2010-08-18 23:46 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-18 23:46 [GIT PULL] perf callchains updates Frederic Weisbecker
2010-08-18 23:46 ` [PATCH 1/7] perf: Drop unappropriate tests on arch callchains Frederic Weisbecker
2010-08-18 23:46 ` [PATCH 2/7] perf: Generalize callchain_store() Frederic Weisbecker
2010-08-18 23:46 ` [PATCH 3/7] perf: Generalize some arch callchain code Frederic Weisbecker
2010-08-18 23:46 ` Frederic Weisbecker [this message]
2010-08-18 23:46 ` [PATCH 5/7] perf: Fix race in callchains Frederic Weisbecker
2010-08-18 23:46 ` [PATCH 6/7] perf: Humanize the number of contexts Frederic Weisbecker
2010-08-18 23:46 ` [PATCH 7/7] perf, tracing: add missing __percpu markups Frederic Weisbecker
2010-08-19 0:34 ` [GIT PULL] perf callchains updates Frederic Weisbecker
2010-08-19 10:06 ` Peter Zijlstra
2010-08-19 10:16 ` Ingo Molnar
2010-08-19 12:09 ` Peter Zijlstra
2010-08-19 17:33 ` Frederic Weisbecker
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