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

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Pull perf fixes from Ingo Molnar:
 "Misc fixes on the kernel and tooling side - nothing in particular
  stands out"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  perf/core: Fix the perf_cpu_time_max_percent check
  perf/core: Fix perf_event_enable_on_exec() timekeeping (again)
  perf/core: Remove confusing comment and move put_ctx()
  perf record: Honor --quiet option properly
  perf annotate: Add -q/--quiet option
  perf diff: Add -q/--quiet option
  perf report: Add -q/--quiet option
  perf utils: Check verbose flag properly
  perf utils: Add perf_quiet_option()
  perf record: Add -a as default target
  perf stat: Add -a as default target
  perf tools: Fail on using multiple bits long terms without value
  perf tools: Move new_term arguments into struct parse_events_term template
  perf build: Add special fixdep cleaning rule
  perf tools: Replace _SC_NPROCESSORS_CONF with max_present_cpu in cpu_topology_map
  perf header: Make build_cpu_topology skip offline/absent CPUs
  perf cpumap: Add cpu__max_present_cpu()
  perf session: Fix DEBUG=1 build with clang
  tools lib traceevent: It's preempt not prempt
  perf python: Filter out -specs=/a/b/c from the python binding cc options
  ...
This commit is contained in:
Linus Torvalds
2017-02-28 11:38:18 -08:00
parent 74efe07bc3 1572e45a92
commit 3f26b0c876
55 changed files with 260 additions and 137 deletions
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12
kernel/events/core.c
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@@ -455,7 +455,7 @@ int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
int ret = proc_dointvec(table, write, buffer, lenp, ppos);
int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
if (ret || !write)
return ret;
@@ -3522,6 +3522,8 @@ static void perf_event_enable_on_exec(int ctxn)
if (enabled) {
clone_ctx = unclone_ctx(ctx);
ctx_resched(cpuctx, ctx, event_type);
} else {
ctx_sched_in(ctx, cpuctx, EVENT_TIME, current);
}
perf_ctx_unlock(cpuctx, ctx);
@@ -9955,6 +9957,7 @@ SYSCALL_DEFINE5(perf_event_open,
* of swizzling perf_event::ctx.
*/
perf_remove_from_context(group_leader, 0);
put_ctx(gctx);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
@@ -9993,13 +9996,6 @@ SYSCALL_DEFINE5(perf_event_open,
perf_event__state_init(group_leader);
perf_install_in_context(ctx, group_leader, group_leader->cpu);
get_ctx(ctx);
/*
* Now that all events are installed in @ctx, nothing
* references @gctx anymore, so drop the last reference we have
* on it.
*/
put_ctx(gctx);
}
/*