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52 lines
1.9 KiB
Diff
52 lines
1.9 KiB
Diff
From d2782b77fdc5d9f238ba186f8c408a9cd5f75576 Mon Sep 17 00:00:00 2001
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From: Tom Zanussi <tom.zanussi@linux.intel.com>
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Date: Mon, 15 Jan 2018 20:51:50 -0600
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Subject: [PATCH 093/436] tracing: Account for variables in named trigger
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compatibility
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Named triggers must also have the same set of variables in order to be
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considered compatible - update the trigger match test to account for
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that.
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The reason for this requirement is that named triggers with variables
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are meant to allow one or more events to set the same variable.
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Link: http://lkml.kernel.org/r/a17eae6328a99917f9d5c66129c9fcd355279ee9.1516069914.git.tom.zanussi@linux.intel.com
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Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
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Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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(cherry picked from commit f94add7df3d72bc8e659f9491e25d91c9dae1b44)
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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kernel/trace/trace_events_hist.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
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index b4301542bb4a..68ff2491edd0 100644
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--- a/kernel/trace/trace_events_hist.c
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+++ b/kernel/trace/trace_events_hist.c
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@@ -1612,7 +1612,7 @@ static int event_hist_trigger_print(struct seq_file *m,
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sort_key = &hist_data->sort_keys[i];
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idx = sort_key->field_idx;
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- if (WARN_ON(idx >= TRACING_MAP_FIELDS_MAX))
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+ if (WARN_ON(idx >= HIST_FIELDS_MAX))
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return -EINVAL;
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if (i > 0)
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@@ -1800,6 +1800,11 @@ static bool hist_trigger_match(struct event_trigger_data *data,
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return false;
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if (key_field->is_signed != key_field_test->is_signed)
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return false;
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+ if (!!key_field->var.name != !!key_field_test->var.name)
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+ return false;
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+ if (key_field->var.name &&
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+ strcmp(key_field->var.name, key_field_test->var.name) != 0)
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+ return false;
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}
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for (i = 0; i < hist_data->n_sort_keys; i++) {
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--
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2.19.1
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