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2c92ca849f
With the rework of how the __string() handles dynamic strings where it
saves off the source string in field in the helper structure[1], the
assignment of that value to the trace event field is stored in the helper
value and does not need to be passed in again.
This means that with:
__string(field, mystring)
Which use to be assigned with __assign_str(field, mystring), no longer
needs the second parameter and it is unused. With this, __assign_str()
will now only get a single parameter.
There's over 700 users of __assign_str() and because coccinelle does not
handle the TRACE_EVENT() macro I ended up using the following sed script:
git grep -l __assign_str | while read a ; do
sed -e 's/\(__assign_str([^,]*[^ ,]\) *,[^;]*/\1)/' $a > /tmp/test-file;
mv /tmp/test-file $a;
done
I then searched for __assign_str() that did not end with ';' as those
were multi line assignments that the sed script above would fail to catch.
Note, the same updates will need to be done for:
__assign_str_len()
__assign_rel_str()
__assign_rel_str_len()
I tested this with both an allmodconfig and an allyesconfig (build only for both).
[1] https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org/
Link: https://lore.kernel.org/linux-trace-kernel/20240516133454.681ba6a0@rorschach.local.home
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Christian König <christian.koenig@amd.com> for the amdgpu parts.
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #for
Acked-by: Rafael J. Wysocki <rafael@kernel.org> # for thermal
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Darrick J. Wong <djwong@kernel.org> # xfs
Tested-by: Guenter Roeck <linux@roeck-us.net>
150 lines
3.3 KiB
C
150 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM rpm
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#if !defined(_TRACE_RUNTIME_POWER_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_RUNTIME_POWER_H
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#include <linux/ktime.h>
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#include <linux/tracepoint.h>
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struct device;
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/*
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* The rpm_internal events are used for tracing some important
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* runtime pm internal functions.
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*/
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DECLARE_EVENT_CLASS(rpm_internal,
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TP_PROTO(struct device *dev, int flags),
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TP_ARGS(dev, flags),
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TP_STRUCT__entry(
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__string( name, dev_name(dev) )
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__field( int, flags )
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__field( int , usage_count )
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__field( int , disable_depth )
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__field( int , runtime_auto )
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__field( int , request_pending )
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__field( int , irq_safe )
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__field( int , child_count )
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),
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TP_fast_assign(
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__assign_str(name);
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__entry->flags = flags;
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__entry->usage_count = atomic_read(
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&dev->power.usage_count);
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__entry->disable_depth = dev->power.disable_depth;
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__entry->runtime_auto = dev->power.runtime_auto;
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__entry->request_pending = dev->power.request_pending;
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__entry->irq_safe = dev->power.irq_safe;
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__entry->child_count = atomic_read(
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&dev->power.child_count);
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),
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TP_printk("%s flags-%x cnt-%-2d dep-%-2d auto-%-1d p-%-1d"
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" irq-%-1d child-%d",
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__get_str(name), __entry->flags,
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__entry->usage_count,
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__entry->disable_depth,
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__entry->runtime_auto,
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__entry->request_pending,
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__entry->irq_safe,
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__entry->child_count
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)
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);
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DEFINE_EVENT(rpm_internal, rpm_suspend,
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TP_PROTO(struct device *dev, int flags),
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TP_ARGS(dev, flags)
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);
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DEFINE_EVENT(rpm_internal, rpm_resume,
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TP_PROTO(struct device *dev, int flags),
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TP_ARGS(dev, flags)
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);
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DEFINE_EVENT(rpm_internal, rpm_idle,
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TP_PROTO(struct device *dev, int flags),
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TP_ARGS(dev, flags)
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);
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DEFINE_EVENT(rpm_internal, rpm_usage,
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TP_PROTO(struct device *dev, int flags),
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TP_ARGS(dev, flags)
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);
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TRACE_EVENT(rpm_return_int,
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TP_PROTO(struct device *dev, unsigned long ip, int ret),
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TP_ARGS(dev, ip, ret),
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TP_STRUCT__entry(
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__string( name, dev_name(dev))
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__field( unsigned long, ip )
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__field( int, ret )
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),
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TP_fast_assign(
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__assign_str(name);
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__entry->ip = ip;
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__entry->ret = ret;
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),
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TP_printk("%pS:%s ret=%d", (void *)__entry->ip, __get_str(name),
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__entry->ret)
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);
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#define RPM_STATUS_STRINGS \
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EM(RPM_INVALID, "RPM_INVALID") \
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EM(RPM_ACTIVE, "RPM_ACTIVE") \
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EM(RPM_RESUMING, "RPM_RESUMING") \
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EM(RPM_SUSPENDED, "RPM_SUSPENDED") \
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EMe(RPM_SUSPENDING, "RPM_SUSPENDING")
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/* Enums require being exported to userspace, for user tool parsing. */
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#undef EM
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#undef EMe
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#define EM(a, b) TRACE_DEFINE_ENUM(a);
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#define EMe(a, b) TRACE_DEFINE_ENUM(a);
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RPM_STATUS_STRINGS
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/*
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* Now redefine the EM() and EMe() macros to map the enums to the strings that
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* will be printed in the output.
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*/
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#undef EM
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#undef EMe
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#define EM(a, b) { a, b },
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#define EMe(a, b) { a, b }
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TRACE_EVENT(rpm_status,
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TP_PROTO(struct device *dev, enum rpm_status status),
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TP_ARGS(dev, status),
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TP_STRUCT__entry(
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__string(name, dev_name(dev))
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__field(int, status)
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),
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TP_fast_assign(
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__assign_str(name);
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__entry->status = status;
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),
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TP_printk("%s status=%s", __get_str(name),
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__print_symbolic(__entry->status, RPM_STATUS_STRINGS))
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);
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#endif /* _TRACE_RUNTIME_POWER_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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