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tracing: Change offset type to s32 in preempt/irq tracepoints

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Discussion in the below link reported that symbols in modules can appear
to be before _stext on ARM architecture, causing wrapping with the
offsets of this tracepoint. Change the offset type to s32 to fix this.

Link: http://lore.kernel.org/r/20191127154428.191095-1-antonio.borneo@st.com
Link: http://lkml.kernel.org/r/20200102194625.226436-1-joel@joelfernandes.org

Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Antonio Borneo <antonio.borneo@st.com>
Cc: stable@vger.kernel.org
Fixes: d59158162e ("tracing: Add support for preempt and irq enable/disable events")
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Joel Fernandes (Google)
2020-01-02 14:46:25 -05:00
committed by Steven Rostedt (VMware)
parent e31f7939c1
commit bf44f488e1
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/trace/events/preemptirq.h
View File

@@ -18,13 +18,13 @@ DECLARE_EVENT_CLASS(preemptirq_template,
TP_ARGS(ip, parent_ip),
TP_STRUCT__entry(
__field(u32, caller_offs)
__field(u32, parent_offs)
__field(s32, caller_offs)
__field(s32, parent_offs)
),
TP_fast_assign(
__entry->caller_offs = (u32)(ip - (unsigned long)_stext);
__entry->parent_offs = (u32)(parent_ip - (unsigned long)_stext);
__entry->caller_offs = (s32)(ip - (unsigned long)_stext);
__entry->parent_offs = (s32)(parent_ip - (unsigned long)_stext);
),
TP_printk("caller=%pS parent=%pS",