lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date:   Tue, 8 Jan 2019 23:16:47 -0800
From:   tip-bot for Arnaldo Carvalho de Melo <>
Subject: [tip:perf/urgent] perf top: Lift restriction on using callchains
 without "sym" in --sort

Commit-ID:  f2e14cd2c93699aa0aeaa8240457ab359f1258ff
Author:     Arnaldo Carvalho de Melo <>
AuthorDate: Tue, 8 Jan 2019 10:56:59 -0300
Committer:  Arnaldo Carvalho de Melo <>
CommitDate: Tue, 8 Jan 2019 13:28:13 -0300

perf top: Lift restriction on using callchains without "sym" in --sort

This restriction is not present in 'perf report' and since 'perf top'
uses the same hists browser, remove it from it as well.

With this we create per event buckets with callchain trees, so that

  # perf top --sort dso -g --no-children

Bucketizes samples by DSO and below it shows the callchains leading to
functions in this DSO.

Try also:

  # perf top -e sched:*switch -g --no-children

To see the callchains leading to sched switches, pressing 'E' to expand
all one can quickly see the most common scheduler switches and what
leads to them, for instance, calls to IO, futexes, etc.

Acked-by: Namhyung Kim <>
Cc: Adrian Hunter <>
Cc: Jiri Olsa <>
Signed-off-by: Arnaldo Carvalho de Melo <>
 tools/perf/builtin-top.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index fe3ecfb2e64b..f64e312db787 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1028,12 +1028,7 @@ out_err:
 static int callchain_param__setup_sample_type(struct callchain_param *callchain)
-	if (!perf_hpp_list.sym) {
-		if (callchain->enabled) {
-			ui__error("Selected -g but \"sym\" not present in --sort/-s.");
-			return -EINVAL;
-		}
-	} else if (callchain->mode != CHAIN_NONE) {
+	if (callchain->mode != CHAIN_NONE) {
 		if (callchain_register_param(callchain) < 0) {
 			ui__error("Can't register callchain params.\n");
 			return -EINVAL;

Powered by blists - more mailing lists