b0ef073243
Add function-entry relative line number specifying support to perf-probe. This allows users to define probes by line number from entry of the function. e.g. perf probe schedule:16 Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> LKML-Reference: <20091027204319.30545.30678.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#ifndef _PROBE_FINDER_H
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#define _PROBE_FINDER_H
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#define MAX_PATH_LEN 256
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#define MAX_PROBE_BUFFER 1024
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#define MAX_PROBES 128
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static inline int is_c_varname(const char *name)
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{
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/* TODO */
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return isalpha(name[0]) || name[0] == '_';
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}
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struct probe_point {
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/* Inputs */
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char *file; /* File name */
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int line; /* Line number */
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char *function; /* Function name */
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int offset; /* Offset bytes */
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int nr_args; /* Number of arguments */
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char **args; /* Arguments */
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int retprobe; /* Return probe */
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/* Output */
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int found; /* Number of found probe points */
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char *probes[MAX_PROBES]; /* Output buffers (will be allocated)*/
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};
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#ifndef NO_LIBDWARF
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extern int find_probepoint(int fd, struct probe_point *pp);
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#include <libdwarf/dwarf.h>
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#include <libdwarf/libdwarf.h>
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struct probe_finder {
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struct probe_point *pp; /* Target probe point */
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/* For function searching */
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Dwarf_Addr addr; /* Address */
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Dwarf_Unsigned fno; /* File number */
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Dwarf_Unsigned lno; /* Line number */
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Dwarf_Off inl_offs; /* Inline offset */
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Dwarf_Die cu_die; /* Current CU */
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/* For variable searching */
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Dwarf_Addr cu_base; /* Current CU base address */
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Dwarf_Locdesc fbloc; /* Location of Current Frame Base */
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const char *var; /* Current variable name */
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char *buf; /* Current output buffer */
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int len; /* Length of output buffer */
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};
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#endif /* NO_LIBDWARF */
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#endif /*_PROBE_FINDER_H */
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