[PATCH RFC][makedumpfile 08/10] Enable page filtering for dwarf eppic

[Tao Liu]

Since dwarf and btf have different apiops, so making it as parameter to
eppic_init, and initialized respectively.

Signed-off-by: Tao Liu <ltao at redhat.com>
---
 erase_info.c      |  8 +++++---
 extension_eppic.c | 34 +++++++++++++++++++++++++++++++---
 extension_eppic.h |  6 ++++--
 3 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/erase_info.c b/erase_info.c
index 9ec1813..eeb2c3b 100644
--- a/erase_info.c
+++ b/erase_info.c
@@ -2202,7 +2202,7 @@ get_die_member_all(unsigned long long die_off, int index, long *offset,
 
 /* Process the eppic macro using eppic library */
 static int
-process_eppic_file(char *name_config)
+process_eppic_file(char *name_config, bool is_btf)
 {
 	void *handle;
 	void (*eppic_load)(char *), (*eppic_unload)(char *);
@@ -2221,7 +2221,9 @@ process_eppic_file(char *name_config)
 	 * Support specifying eppic macros in makedumpfile.conf file
 	 */
 
-	eppic_init = dlsym(handle, "eppic_init");
+	if (!is_btf) {
+		eppic_init = dlsym(handle, "eppic_dwarf_init");
+	}
 	if (!eppic_init) {
 		ERRMSG("Could not find eppic_init function\n");
 		return FALSE;
@@ -2368,7 +2370,7 @@ gather_filter_info(void)
 		ret = process_config_file(info->name_filterconfig);
 
 	if (info->name_eppic_config)
-		ret &= process_eppic_file(info->name_eppic_config);
+		ret &= process_eppic_file(info->name_eppic_config, false);
 
 	/*
 	 * Remove modules symbol information, we dont need now.
diff --git a/extension_eppic.c b/extension_eppic.c
index c4a13b9..59178e5 100644
--- a/extension_eppic.c
+++ b/extension_eppic.c
@@ -23,8 +23,10 @@
 
 #include "makedumpfile.h"
 #include "extension_eppic.h"
+#include "eppic_maple.h"
 
 static int apigetctype(int, char *, type_t *);
+struct call_back *cb;
 
 /*
  * Most of the functions included in this file performs similar
@@ -416,7 +418,7 @@ apifindsym(char *p)
 	return NULL;
 }
 
-apiops icops = {
+apiops dwarf_icops = {
 	apigetmem,
 	apiputmem,
 	apimember,
@@ -449,17 +451,27 @@ eppic_memset(VALUE_S *vaddr, VALUE_S *vch, VALUE_S *vlen)
 	return eppic_makebtype(1);
 }
 
+VALUE_S *
+eppic_filter_pages(VALUE_S *p, VALUE_S *n)
+{
+	unsigned long pfn = eppic_getval(p);
+	unsigned long num = eppic_getval(n);
+
+	UPDATE_FILTER_PAGE_INFO(pfn, num);
+	return eppic_makebtype(1);
+}
+
 
 /* Initialize eppic */
 int
-eppic_init(void *fun_ptr)
+eppic_init(void *fun_ptr, apiops *ops, bool is_btf)
 {
 	cb = (struct call_back *)fun_ptr;
 
 	if (eppic_open() >= 0) {
 
 		/* Register call back functions */
-		eppic_apiset(&icops, 3, sizeof(long), 0);
+		eppic_apiset(ops, 3, sizeof(long), 0);
 
 		/* set the new function callback */
 		eppic_setcallback(reg_callback);
@@ -468,8 +480,24 @@ eppic_init(void *fun_ptr)
 		eppic_builtin("int memset(char *, int, int)",
 				(bf_t *)eppic_memset);
 
+		if (maple_init(is_btf) == FALSE)
+			return 1;
+
+		eppic_builtin("int maple_count(char *)",
+				(bf_t *)maple_count);
+
+		eppic_builtin("unsigned long maple_elem(char *, int)",
+				(bf_t *)maple_elem);
+
+		eppic_builtin("unsigned long filter_pages(unsigned long, unsigned long)",
+				(bf_t *)eppic_filter_pages);
+
 		return 0;
 	}
 	return 1;
 }
 
+int eppic_dwarf_init(void *fun_ptr)
+{
+	return eppic_init(fun_ptr, &dwarf_icops, false);
+}
diff --git a/extension_eppic.h b/extension_eppic.h
index 08f1db0..ff92f01 100644
--- a/extension_eppic.h
+++ b/extension_eppic.h
@@ -79,8 +79,7 @@ do { \
 		fprintf(stderr, x); \
 } while (0)
 
-
-struct call_back *cb;
+extern struct call_back *cb;
 
 #define GET_DOMAIN_ALL cb->get_domain_all
 #define READMEM cb->readmem
@@ -92,5 +91,8 @@ struct call_back *cb;
 #define GET_DIE_NFIELDS_ALL cb->get_die_nfields_all
 #define GET_SYMBOL_ADDR_ALL cb->get_symbol_addr_all
 #define UPDATE_FILTER_INFO_RAW cb->update_filter_info_raw
+#define UPDATE_FILTER_PAGE_INFO cb->update_filter_pages_info
+
+int eppic_init(void *, apiops *, bool);
 
 #endif /* _EXTENSION_EPPIC_H */
-- 
2.47.0