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Date: Fri, 18 Nov 2011 14:46:41 +0100
From: Jiri Olsa <jolsa@...hat.com>
To: acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu,
paulus@...ba.org
Cc: linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH 1/5] perf tool: Fix session host_nachine retrieval
The host_machine is statically included inside perf_session struct
so it is always present.
Changing function:
'perf_session__find_host_machine' to 'perf_session__host_machine'
Removing NULL checking code after this function, since it is not needed.
Signed-off-by: Jiri Olsa <jolsa@...hat.com>
---
tools/perf/builtin-inject.c | 6 +-----
tools/perf/builtin-kmem.c | 12 +++++-------
tools/perf/builtin-record.c | 6 +-----
tools/perf/builtin-top.c | 4 ++--
tools/perf/util/event.c | 14 +++++---------
tools/perf/util/session.h | 6 +++---
6 files changed, 17 insertions(+), 31 deletions(-)
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 8dfc12b..3c5eb3a 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -111,11 +111,7 @@ static int dso__inject_build_id(struct dso *self, struct perf_session *session)
return -1;
}
- machine = perf_session__find_host_machine(session);
- if (machine == NULL) {
- pr_err("Can't find machine for session\n");
- return -1;
- }
+ machine = perf_session__host_machine(session);
if (self->kernel)
misc = PERF_RECORD_MISC_KERNEL;
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 225e963..2ca8206 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -342,7 +342,6 @@ static void __print_result(struct rb_root *root, struct perf_session *session,
int n_lines, int is_caller)
{
struct rb_node *next;
- struct machine *machine;
printf("%.102s\n", graph_dotted_line);
printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr");
@@ -351,11 +350,6 @@ static void __print_result(struct rb_root *root, struct perf_session *session,
next = rb_first(root);
- machine = perf_session__find_host_machine(session);
- if (!machine) {
- pr_err("__print_result: couldn't find kernel information\n");
- return;
- }
while (next && n_lines--) {
struct alloc_stat *data = rb_entry(next, struct alloc_stat,
node);
@@ -366,8 +360,12 @@ static void __print_result(struct rb_root *root, struct perf_session *session,
if (is_caller) {
addr = data->call_site;
- if (!raw_ip)
+ if (!raw_ip) {
+ struct machine *machine;
+
+ machine = perf_session__host_machine(session);
sym = machine__find_kernel_function(machine, addr, &map, NULL);
+ }
} else
addr = data->ptr;
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 6ab58cc..1132e70 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -662,11 +662,7 @@ static int __cmd_record(int argc, const char **argv)
}
}
- machine = perf_session__find_host_machine(session);
- if (!machine) {
- pr_err("Couldn't find native kernel information.\n");
- return -1;
- }
+ machine = perf_session__host_machine(session);
err = perf_event__synthesize_kernel_mmap(process_synthesized_event,
session, machine, "_text");
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index c9cdedb..8e02027 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -692,13 +692,13 @@ static void perf_event__process_sample(const union perf_event *event,
++top.us_samples;
if (top.hide_user_symbols)
return;
- machine = perf_session__find_host_machine(session);
+ machine = perf_session__host_machine(session);
break;
case PERF_RECORD_MISC_KERNEL:
++top.kernel_samples;
if (top.hide_kernel_symbols)
return;
- machine = perf_session__find_host_machine(session);
+ machine = perf_session__host_machine(session);
break;
case PERF_RECORD_MISC_GUEST_KERNEL:
++top.guest_kernel_samples;
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 437f8ca..35817fa 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -589,12 +589,12 @@ int perf_event__process_mmap(union perf_event *event,
return 0;
}
- machine = perf_session__find_host_machine(session);
- if (machine == NULL)
- goto out_problem;
thread = perf_session__findnew(session, event->mmap.pid);
if (thread == NULL)
goto out_problem;
+
+ machine = perf_session__host_machine(session);
+
map = map__new(&machine->user_dsos, event->mmap.start,
event->mmap.len, event->mmap.pgoff,
event->mmap.pid, event->mmap.filename,
@@ -672,15 +672,11 @@ void thread__find_addr_map(struct thread *self,
if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
al->level = 'k';
- machine = perf_session__find_host_machine(session);
- if (machine == NULL) {
- al->map = NULL;
- return;
- }
+ machine = perf_session__host_machine(session);
mg = &machine->kmaps;
} else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
al->level = '.';
- machine = perf_session__find_host_machine(session);
+ machine = perf_session__host_machine(session);
} else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
al->level = 'g';
machine = perf_session__find_machine(session, pid);
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 6e393c9..a81d666 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -121,7 +121,7 @@ void perf_session__update_sample_type(struct perf_session *self);
void perf_session__remove_thread(struct perf_session *self, struct thread *th);
static inline
-struct machine *perf_session__find_host_machine(struct perf_session *self)
+struct machine *perf_session__host_machine(struct perf_session *self)
{
return &self->host_machine;
}
@@ -130,7 +130,7 @@ static inline
struct machine *perf_session__find_machine(struct perf_session *self, pid_t pid)
{
if (pid == HOST_KERNEL_ID)
- return &self->host_machine;
+ return perf_session__host_machine(self);
return machines__find(&self->machines, pid);
}
@@ -138,7 +138,7 @@ static inline
struct machine *perf_session__findnew_machine(struct perf_session *self, pid_t pid)
{
if (pid == HOST_KERNEL_ID)
- return &self->host_machine;
+ return perf_session__host_machine(self);
return machines__findnew(&self->machines, pid);
}
--
1.7.4
--
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