Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixes, most of them on the tooling side"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Fix strict alias issue for find_first_bit
  perf tools: fix BFD detection on opensuse
  perf: Fix hotplug splat
  perf/x86: Fix event scheduling
  perf symbols: Destroy unused symsrcs
  perf annotate: Check availability of annotate when processing samples

10 files changed, 54 insertions, 28 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 895604f2e916..79f9f848bee4 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1192,6 +1192,9 @@ static void x86_pmu_del(struct perf_event *event, int flags)
         for (i = 0; i < cpuc->n_events; i++) {
                 if (event == cpuc->event_list[i]) {
 
+                        if (i >= cpuc->n_events - cpuc->n_added)
+                                --cpuc->n_added;
+
                         if (x86_pmu.put_event_constraints)
                                 x86_pmu.put_event_constraints(cpuc, event);
 
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 56003c6edfd3..fa0b2d4ad83c 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7856,14 +7856,14 @@ static void perf_pmu_rotate_stop(struct pmu *pmu)
 static void __perf_event_exit_context(void *__info)
 {
         struct perf_event_context *ctx = __info;
-        struct perf_event *event, *tmp;
+        struct perf_event *event;
 
         perf_pmu_rotate_stop(ctx->pmu);
 
-        list_for_each_entry_safe(event, tmp, &ctx->pinned_groups, group_entry)
-                __perf_remove_from_context(event);
-        list_for_each_entry_safe(event, tmp, &ctx->flexible_groups, group_entry)
+        rcu_read_lock();
+        list_for_each_entry_rcu(event, &ctx->event_list, event_entry)
                 __perf_remove_from_context(event);
+        rcu_read_unlock();
 }
 
 static void perf_event_exit_cpu_context(int cpu)
@@ -7887,11 +7887,11 @@ static void perf_event_exit_cpu(int cpu)
 {
         struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu);
 
+        perf_event_exit_cpu_context(cpu);
+
         mutex_lock(&swhash->hlist_mutex);
         swevent_hlist_release(swhash);
         mutex_unlock(&swhash->hlist_mutex);
-
-        perf_event_exit_cpu_context(cpu);
 }
 #else
 static inline void perf_event_exit_cpu(int cpu) { }
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 3c53ec268fbc..02f985f3a396 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -113,14 +113,16 @@ static int report__add_mem_hist_entry(struct perf_tool *tool, struct addr_locati
         if (!he)
                 return -ENOMEM;
 
-        err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
-        if (err)
-                goto out;
+        if (ui__has_annotation()) {
+                err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
+                if (err)
+                        goto out;
 
-        mx = he->mem_info;
-        err = addr_map_symbol__inc_samples(&mx->daddr, evsel->idx);
-        if (err)
-                goto out;
+                mx = he->mem_info;
+                err = addr_map_symbol__inc_samples(&mx->daddr, evsel->idx);
+                if (err)
+                        goto out;
+        }
 
         evsel->hists.stats.total_period += cost;
         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
@@ -164,14 +166,18 @@ static int report__add_branch_hist_entry(struct perf_tool *tool, struct addr_loc
                 he = __hists__add_entry(&evsel->hists, al, parent, &bi[i], NULL,
                                         1, 1, 0);
                 if (he) {
-                        bx = he->branch_info;
-                        err = addr_map_symbol__inc_samples(&bx->from, evsel->idx);
-                        if (err)
-                                goto out;
-
-                        err = addr_map_symbol__inc_samples(&bx->to, evsel->idx);
-                        if (err)
-                                goto out;
+                        if (ui__has_annotation()) {
+                                bx = he->branch_info;
+                                err = addr_map_symbol__inc_samples(&bx->from,
+                                                                   evsel->idx);
+                                if (err)
+                                        goto out;
+
+                                err = addr_map_symbol__inc_samples(&bx->to,
+                                                                   evsel->idx);
+                                if (err)
+                                        goto out;
+                        }
 
                         evsel->hists.stats.total_period += 1;
                         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
@@ -205,7 +211,9 @@ static int report__add_hist_entry(struct perf_tool *tool, struct perf_evsel *evs
         if (err)
                 goto out;
 
-        err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
+        if (ui__has_annotation())
+                err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
+
         evsel->hists.stats.total_period += sample->period;
         hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 out:
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 76cd510d34d0..5f989a7d8bc2 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -176,7 +176,7 @@ static void perf_top__record_precise_ip(struct perf_top *top,
 {
         struct annotation *notes;
         struct symbol *sym;
-        int err;
+        int err = 0;
 
         if (he == NULL || he->ms.sym == NULL ||
             ((top->sym_filter_entry == NULL ||
@@ -190,7 +190,9 @@ static void perf_top__record_precise_ip(struct perf_top *top,
                 return;
 
         ip = he->ms.map->map_ip(he->ms.map, ip);
-        err = hist_entry__inc_addr_samples(he, counter, ip);
+
+        if (ui__has_annotation())
+                err = hist_entry__inc_addr_samples(he, counter, ip);
 
         pthread_mutex_unlock(&notes->lock);
 
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index c48d44958172..0331ea2701a3 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -478,7 +478,7 @@ else
 endif
 
 ifeq ($(feature-libbfd), 1)
-  EXTLIBS += -lbfd
+  EXTLIBS += -lbfd -lz -liberty
 endif
 
 ifdef NO_DEMANGLE
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index 12e551346fa6..523b7bc10553 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -121,7 +121,7 @@ test-libpython-version.bin:
         $(BUILD) $(FLAGS_PYTHON_EMBED)
 
 test-libbfd.bin:
-        $(BUILD) -DPACKAGE='"perf"' -lbfd -ldl
+        $(BUILD) -DPACKAGE='"perf"' -lbfd -lz -liberty -ldl
 
 test-liberty.bin:
         $(CC) -o $(OUTPUT)$@ test-libbfd.c -DPACKAGE='"perf"' -lbfd -ldl -liberty
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 469eb679fb9d..3aa555ff9d89 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -8,6 +8,8 @@
  */
 
 #include "util.h"
+#include "ui/ui.h"
+#include "sort.h"
 #include "build-id.h"
 #include "color.h"
 #include "cache.h"
@@ -489,7 +491,7 @@ static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 {
         struct annotation *notes;
 
-        if (sym == NULL || use_browser != 1 || !sort__has_sym)
+        if (sym == NULL)
                 return 0;
 
         notes = symbol__annotation(sym);
@@ -1399,3 +1401,8 @@ int hist_entry__annotate(struct hist_entry *he, size_t privsize)
 {
         return symbol__annotate(he->ms.sym, he->ms.map, privsize);
 }
+
+bool ui__has_annotation(void)
+{
+        return use_browser == 1 && sort__has_sym;
+}
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index b2aef59d6bb2..56ad4f5287de 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -151,6 +151,8 @@ void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
 void disasm__purge(struct list_head *head);
 
+bool ui__has_annotation(void);
+
 int symbol__tty_annotate(struct symbol *sym, struct map *map,
                          struct perf_evsel *evsel, bool print_lines,
                          bool full_paths, int min_pcnt, int max_lines);
diff --git a/tools/perf/util/include/linux/bitops.h b/tools/perf/util/include/linux/bitops.h
index 45cf10a562bd..dadfa7e54287 100644
--- a/tools/perf/util/include/linux/bitops.h
+++ b/tools/perf/util/include/linux/bitops.h
@@ -87,13 +87,15 @@ static __always_inline unsigned long __ffs(unsigned long word)
         return num;
 }
 
+typedef const unsigned long __attribute__((__may_alias__)) long_alias_t;
+
 /*
  * Find the first set bit in a memory region.
  */
 static inline unsigned long
 find_first_bit(const unsigned long *addr, unsigned long size)
 {
-        const unsigned long *p = addr;
+        long_alias_t *p = (long_alias_t *) addr;
         unsigned long result = 0;
         unsigned long tmp;
 
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index a9d758a3b371..e89afc097d8a 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1336,6 +1336,8 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter)
 
                         if (syms_ss && runtime_ss)
                                 break;
+                } else {
+                        symsrc__destroy(ss);
                 }
 
         }