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trace: make call depth limit customizable

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Up to now we had hard coded values for the call depth up to which trace
records are created: 200 for early tracing, 15 thereafter. UEFI
applications reach a call depth of 80 or above.

Provide customizing settings for the call trace depth limit and the early
call trace depth limit. Use the old values as defaults.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Heinrich Schuchardt
2019-06-02 13:30:09 +02:00
committed by Simon Glass
parent a2fa38da20
commit da0fb5fdd4
2 changed files with 17 additions and 2 deletions
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4
lib/trace.c
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@@ -376,7 +376,7 @@ int __attribute__((no_instrument_function)) trace_init(void *buff,
add_textbase();
puts("trace: enabled\n");
hdr->depth_limit = 15;
hdr->depth_limit = CONFIG_TRACE_CALL_DEPTH_LIMIT;
trace_enabled = 1;
trace_inited = 1;
@@ -410,7 +410,7 @@ int __attribute__((no_instrument_function)) trace_early_init(void)
hdr->ftrace = (struct trace_call *)((char *)hdr + needed);
hdr->ftrace_size = (buff_size - needed) / sizeof(*hdr->ftrace);
add_textbase();
hdr->depth_limit = 200;
hdr->depth_limit = CONFIG_TRACE_EARLY_CALL_DEPTH_LIMIT;
printf("trace: early enable at %08x\n", CONFIG_TRACE_EARLY_ADDR);
trace_enabled = 1;