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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2021-08-10 11:07:14 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-22 12:28:03 +0200 |
| commit | e8dfc446a16a81b5a12c87de7367d79ba3ff8b54 (patch) | |
| tree | 9f9b6f335c18060700c1cb9664d7e47c0b253f60 | |
| parent | 87479b10eb72f82aa45e8dc6a3dd9bfaec38f9d7 (diff) | |
| download | linux-stable-e8dfc446a16a81b5a12c87de7367d79ba3ff8b54.tar.gz linux-stable-e8dfc446a16a81b5a12c87de7367d79ba3ff8b54.tar.bz2 linux-stable-e8dfc446a16a81b5a12c87de7367d79ba3ff8b54.zip | |
tracing/boot: Fix a hist trigger dependency for boot time tracing
[ Upstream commit 6fe7c745f2acb73e4cc961d7f91125eef5a8861f ]
Fixes a build error when CONFIG_HIST_TRIGGERS=n with boot-time
tracing. Since the trigger_process_regex() is defined only
when CONFIG_HIST_TRIGGERS=y, if it is disabled, the 'actions'
event option also must be disabled.
Link: https://lkml.kernel.org/r/162856123376.203126.582144262622247352.stgit@devnote2
Fixes: 81a59555ff15 ("tracing/boot: Add per-event settings")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | kernel/trace/trace_boot.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c index a82f03f385f8..0996d59750ff 100644 --- a/kernel/trace/trace_boot.c +++ b/kernel/trace/trace_boot.c @@ -205,12 +205,15 @@ trace_boot_init_one_event(struct trace_array *tr, struct xbc_node *gnode, pr_err("Failed to apply filter: %s\n", buf); } - xbc_node_for_each_array_value(enode, "actions", anode, p) { - if (strlcpy(buf, p, ARRAY_SIZE(buf)) >= ARRAY_SIZE(buf)) - pr_err("action string is too long: %s\n", p); - else if (trigger_process_regex(file, buf) < 0) - pr_err("Failed to apply an action: %s\n", buf); - } + if (IS_ENABLED(CONFIG_HIST_TRIGGERS)) { + xbc_node_for_each_array_value(enode, "actions", anode, p) { + if (strlcpy(buf, p, ARRAY_SIZE(buf)) >= ARRAY_SIZE(buf)) + pr_err("action string is too long: %s\n", p); + else if (trigger_process_regex(file, buf) < 0) + pr_err("Failed to apply an action: %s\n", buf); + } + } else if (xbc_node_find_value(enode, "actions", NULL)) + pr_err("Failed to apply event actions because CONFIG_HIST_TRIGGERS is not set.\n"); if (xbc_node_find_value(enode, "enable", NULL)) { if (trace_event_enable_disable(file, 1, 0) < 0) |