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

Pull perf updates from Ingo Molnar:
 "The main changes in this cycle were:

  Kernel:

   - kprobes updates: use better W^X patterns for code modifications,
     improve optprobes, remove jprobes. (Masami Hiramatsu, Kees Cook)

   - core fixes: event timekeeping (enabled/running times statistics)
     fixes, perf_event_read() locking fixes and cleanups, etc. (Peter
     Zijlstra)

   - Extend x86 Intel free-running PEBS support and support x86
     user-register sampling in perf record and perf script. (Andi Kleen)

  Tooling:

   - Completely rework the way inline frames are handled. Instead of
     querying for the inline nodes on-demand in the individual tools, we
     now create proper callchain nodes for inlined frames. (Milian
     Wolff)

   - 'perf trace' updates (Arnaldo Carvalho de Melo)

   - Implement a way to print formatted output to per-event files in
     'perf script' to facilitate generate flamegraphs, elliminating the
     need to write scripts to do that separation (yuzhoujian, Arnaldo
     Carvalho de Melo)

   - Update vendor events JSON metrics for Intel's Broadwell, Broadwell
     Server, Haswell, Haswell Server, IvyBridge, IvyTown, JakeTown,
     Sandy Bridge, Skylake, SkyLake Server - and Goldmont Plus V1 (Andi
     Kleen, Kan Liang)

   - Multithread the synthesizing of PERF_RECORD_ events for
     pre-existing threads in 'perf top', speeding up that phase, greatly
     improving the user experience in systems such as Intel's Knights
     Mill (Kan Liang)

   - Introduce the concept of weak groups in 'perf stat': try to set up
     a group, but if it's not schedulable fallback to not using a group.
     That gives us the best of both worlds: groups if they work, but
     still a usable fallback if they don't. E.g: (Andi Kleen)

   - perf sched timehist enhancements (David Ahern)

   - ... various other enhancements, updates, cleanups and fixes"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (139 commits)
  kprobes: Don't spam the build log with deprecation warnings
  arm/kprobes: Remove jprobe test case
  arm/kprobes: Fix kretprobe test to check correct counter
  perf srcline: Show correct function name for srcline of callchains
  perf srcline: Fix memory leak in addr2inlines()
  perf trace beauty kcmp: Beautify arguments
  perf trace beauty: Implement pid_fd beautifier
  tools include uapi: Grab a copy of linux/kcmp.h
  perf callchain: Fix double mapping al->addr for children without self period
  perf stat: Make --per-thread update shadow stats to show metrics
  perf stat: Move the shadow stats scale computation in perf_stat__update_shadow_stats
  perf tools: Add perf_data_file__write function
  perf tools: Add struct perf_data_file
  perf tools: Rename struct perf_data_file to perf_data
  perf script: Print information about per-event-dump files
  perf trace beauty prctl: Generate 'option' string table from kernel headers
  tools include uapi: Grab a copy of linux/prctl.h
  perf script: Allow creating per-event dump files
  perf evsel: Restore evsel->priv as a tool private area
  perf script: Use event_format__fprintf()
  ...

1 files changed, 1 insertions, 58 deletions

diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c
index 1c98a87786ca..9ed0129bed3c 100644
--- a/arch/arm/probes/kprobes/test-core.c
+++ b/arch/arm/probes/kprobes/test-core.c
@@ -227,7 +227,6 @@ static bool test_regs_ok;
 static int test_func_instance;
 static int pre_handler_called;
 static int post_handler_called;
-static int jprobe_func_called;
 static int kretprobe_handler_called;
 static int tests_failed;
 
@@ -370,50 +369,6 @@ static int test_kprobe(long (*func)(long, long))
 	return 0;
 }
 
-static void __kprobes jprobe_func(long r0, long r1)
-{
-	jprobe_func_called = test_func_instance;
-	if (r0 == FUNC_ARG1 && r1 == FUNC_ARG2)
-		test_regs_ok = true;
-	jprobe_return();
-}
-
-static struct jprobe the_jprobe = {
-	.entry		= jprobe_func,
-};
-
-static int test_jprobe(long (*func)(long, long))
-{
-	int ret;
-
-	the_jprobe.kp.addr = (kprobe_opcode_t *)func;
-	ret = register_jprobe(&the_jprobe);
-	if (ret < 0) {
-		pr_err("FAIL: register_jprobe failed with %d\n", ret);
-		return ret;
-	}
-
-	ret = call_test_func(func, true);
-
-	unregister_jprobe(&the_jprobe);
-	the_jprobe.kp.flags = 0; /* Clear disable flag to allow reuse */
-
-	if (!ret)
-		return -EINVAL;
-	if (jprobe_func_called != test_func_instance) {
-		pr_err("FAIL: jprobe handler function not called\n");
-		return -EINVAL;
-	}
-	if (!call_test_func(func, false))
-		return -EINVAL;
-	if (jprobe_func_called == test_func_instance) {
-		pr_err("FAIL: probe called after unregistering\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
 static int __kprobes
 kretprobe_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
 {
@@ -451,7 +406,7 @@ static int test_kretprobe(long (*func)(long, long))
 	}
 	if (!call_test_func(func, false))
 		return -EINVAL;
-	if (jprobe_func_called == test_func_instance) {
+	if (kretprobe_handler_called == test_func_instance) {
 		pr_err("FAIL: kretprobe called after unregistering\n");
 		return -EINVAL;
 	}
@@ -468,18 +423,6 @@ static int run_api_tests(long (*func)(long, long))
 	if (ret < 0)
 		return ret;
 
-	pr_info("    jprobe\n");
-	ret = test_jprobe(func);
-#if defined(CONFIG_THUMB2_KERNEL) && !defined(MODULE)
-	if (ret == -EINVAL) {
-		pr_err("FAIL: Known longtime bug with jprobe on Thumb kernels\n");
-		tests_failed = ret;
-		ret = 0;
-	}
-#endif
-	if (ret < 0)
-		return ret;
-
 	pr_info("    kretprobe\n");
 	ret = test_kretprobe(func);
 	if (ret < 0)