From bc5612d2f7bd76d8e249e3b0064eb2af9844c61b Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Google)" Date: Thu, 16 May 2024 13:34:54 -0400 Subject: [PATCH] tracing/treewide: Remove second parameter of __assign_str() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Cc: Mathieu Desnoyers Cc: Linus Torvalds Cc: Julia Lawall Signed-off-by: Steven Rostedt (Google) Acked-by: Jani Nikula Acked-by: Christian König for the amdgpu parts. Acked-by: Thomas Hellström #for Acked-by: Rafael J. Wysocki # for thermal Acked-by: Takashi Iwai Acked-by: Darrick J. Wong # xfs Tested-by: Guenter Roeck --- include/trace/events/pwc.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/trace/events/pwc.h b/include/trace/events/pwc.h index a2da764a3b41..0543702542d9 100644 --- a/include/trace/events/pwc.h +++ b/include/trace/events/pwc.h @@ -26,7 +26,7 @@ TRACE_EVENT(pwc_handler_enter, __entry->urb__actual_length = urb->actual_length; __entry->fbuf__filled = (pdev->fill_buf ? pdev->fill_buf->filled : 0); - __assign_str(name, pdev->v4l2_dev.name); + __assign_str(name); ), TP_printk("dev=%s (fbuf=%p filled=%d) urb=%p (status=%d actual_length=%u)", __get_str(name), @@ -50,7 +50,7 @@ TRACE_EVENT(pwc_handler_exit, __entry->urb = urb; __entry->fbuf = pdev->fill_buf; __entry->fbuf__filled = pdev->fill_buf->filled; - __assign_str(name, pdev->v4l2_dev.name); + __assign_str(name); ), TP_printk(" dev=%s (fbuf=%p filled=%d) urb=%p", __get_str(name),