Commit-ID: 52a3cb8cfca16db73cf825cb94325cf54da8304f
Gitweb: http://git.kernel.org/tip/52a3cb8cfca16db73cf825cb94325cf54da8304f
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 11 Mar 2014 16:16:49 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 14 Mar 2014 18:08:40 -0300
perf symbols: Introduce thread__find_cpumode_addr_location
Its one level up thread__find_addr_location, where it will look in
different domains for a sample: user, kernel, hypervisor, etc.
Will soon be used by a patchkit by Andi Kleen.
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-so6nxkh7xj48bc5kq4jpj991@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/machine.c | 33 ++++++++-------------------------
tools/perf/util/thread.c | 21 +++++++++++++++++++++
tools/perf/util/thread.h | 5 +++++
3 files changed, 34 insertions(+), 25 deletions(-)
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 813e94e..a679953 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1184,39 +1184,22 @@ static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
return 0;
}
-static const u8 cpumodes[] = {
- PERF_RECORD_MISC_USER,
- PERF_RECORD_MISC_KERNEL,
- PERF_RECORD_MISC_GUEST_USER,
- PERF_RECORD_MISC_GUEST_KERNEL
-};
-#define NCPUMODES (sizeof(cpumodes)/sizeof(u8))
-
static void ip__resolve_ams(struct machine *machine, struct thread *thread,
struct addr_map_symbol *ams,
u64 ip)
{
struct addr_location al;
- size_t i;
- u8 m;
memset(&al, 0, sizeof(al));
+ /*
+ * We cannot use the header.misc hint to determine whether a
+ * branch stack address is user, kernel, guest, hypervisor.
+ * Branches may straddle the kernel/user/hypervisor boundaries.
+ * Thus, we have to try consecutively until we find a match
+ * or else, the symbol is unknown
+ */
+ thread__find_cpumode_addr_location(thread, machine, MAP__FUNCTION, ip, &al);
- for (i = 0; i < NCPUMODES; i++) {
- m = cpumodes[i];
- /*
- * We cannot use the header.misc hint to determine whether a
- * branch stack address is user, kernel, guest, hypervisor.
- * Branches may straddle the kernel/user/hypervisor boundaries.
- * Thus, we have to try consecutively until we find a match
- * or else, the symbol is unknown
- */
- thread__find_addr_location(thread, machine, m, MAP__FUNCTION,
- ip, &al);
- if (al.map)
- goto found;
- }
-found:
ams->addr = ip;
ams->al_addr = al.addr;
ams->sym = al.sym;
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 0358882..3ce0498 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -142,3 +142,24 @@ int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
return 0;
}
+
+void thread__find_cpumode_addr_location(struct thread *thread,
+ struct machine *machine,
+ enum map_type type, u64 addr,
+ struct addr_location *al)
+{
+ size_t i;
+ const u8 const cpumodes[] = {
+ PERF_RECORD_MISC_USER,
+ PERF_RECORD_MISC_KERNEL,
+ PERF_RECORD_MISC_GUEST_USER,
+ PERF_RECORD_MISC_GUEST_KERNEL
+ };
+
+ for (i = 0; i < ARRAY_SIZE(cpumodes); i++) {
+ thread__find_addr_location(thread, machine, cpumodes[i], type,
+ addr, al);
+ if (al->map)
+ break;
+ }
+}
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 5b856bf..9a07074 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -58,6 +58,11 @@ void thread__find_addr_location(struct thread *thread, struct machine *machine,
u8 cpumode, enum map_type type, u64 addr,
struct addr_location *al);
+void thread__find_cpumode_addr_location(struct thread *thread,
+ struct machine *machine,
+ enum map_type type, u64 addr,
+ struct addr_location *al);
+
static inline void *thread__priv(struct thread *thread)
{
return thread->priv;
--
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