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gcc/0195-add-whitelist-feature-for-OneProfile.patch
zhenyu--zhao_admin f7b7abf316 add whitelist feature for OneProfile 
(cherry picked from commit c54853cf6cb84b579ca6fa8d5af396fef3d68ac0)
2024-06-14 10:32:33 +08:00

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From 123f668cfe3b8ad1144e455351dcde1e94d82224 Mon Sep 17 00:00:00 2001
From: zhenyu--zhao_admin <zhaozhenyu17@huawei.com>
Date: Tue, 11 Jun 2024 19:03:07 +0800
Subject: [PATCH 1/1] add whitelist feature for OneProfile
---
gcc/gcov-tool.c | 21 ++++++++++++------
libgcc/libgcov-util.c | 50 +++++++++++++++++++++++++++++++++++++------
2 files changed, 59 insertions(+), 12 deletions(-)
diff --git a/gcc/gcov-tool.c b/gcc/gcov-tool.c
index f8f1cb5d2..9c33e5c49 100644
--- a/gcc/gcov-tool.c
+++ b/gcc/gcov-tool.c
@@ -40,7 +40,8 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#endif
#include <getopt.h>
-extern int gcov_profile_merge (struct gcov_info*, struct gcov_info*, int, int);
+extern int gcov_profile_merge (struct gcov_info*, struct gcov_info*,
+ int, int, char*);
extern int gcov_profile_overlap (struct gcov_info*, struct gcov_info*);
extern int gcov_profile_normalize (struct gcov_info*, gcov_type);
extern int gcov_profile_scale (struct gcov_info*, float, int, int);
@@ -137,7 +138,8 @@ gcov_output_files (const char *out, struct gcov_info *profile)
Return 0 on success. */
static int
-profile_merge (const char *d1, const char *d2, const char *out, int w1, int w2)
+profile_merge (const char *d1, const char *d2, const char *out, int w1, int w2,
+ char* whitelistPath)
{
struct gcov_info *d1_profile;
struct gcov_info *d2_profile;
@@ -154,7 +156,7 @@ profile_merge (const char *d1, const char *d2, const char *out, int w1, int w2)
return 1;
/* The actual merge: we overwrite to d1_profile. */
- ret = gcov_profile_merge (d1_profile, d2_profile, w1, w2);
+ ret = gcov_profile_merge (d1_profile, d2_profile, w1, w2, whitelistPath);
if (ret)
return ret;
@@ -176,6 +178,7 @@ print_merge_usage_message (int error_p)
fnotice (file, " -o, --output <dir> Output directory\n");
fnotice (file, " -v, --verbose Verbose mode\n");
fnotice (file, " -w, --weight <w1,w2> Set weights (float point values)\n");
+ fnotice (file, " -p, --whitelistPath <dir> Only merge the function in the whiteList\n");
}
static const struct option merge_options[] =
@@ -183,7 +186,8 @@ static const struct option merge_options[] =
{ "verbose", no_argument, NULL, 'v' },
{ "output", required_argument, NULL, 'o' },
{ "weight", required_argument, NULL, 'w' },
- { 0, 0, 0, 0 }
+ { "WhitelistPath", required_argument, NULL, 'p' },
+ { 0, 0, 0, 0 },
};
/* Print merge usage and exit. */
@@ -204,9 +208,10 @@ do_merge (int argc, char **argv)
int opt;
const char *output_dir = 0;
int w1 = 1, w2 = 1;
+ char *path = 0;
optind = 0;
- while ((opt = getopt_long (argc, argv, "vo:w:", merge_options, NULL)) != -1)
+ while ((opt = getopt_long (argc, argv, "vo:w:p:", merge_options, NULL)) != -1)
{
switch (opt)
{
@@ -222,6 +227,9 @@ do_merge (int argc, char **argv)
if (w1 < 0 || w2 < 0)
fatal_error (input_location, "weights need to be non-negative");
break;
+ case 'p':
+ path = optarg;
+ break;
default:
merge_usage ();
}
@@ -233,7 +241,8 @@ do_merge (int argc, char **argv)
if (argc - optind != 2)
merge_usage ();
- return profile_merge (argv[optind], argv[optind+1], output_dir, w1, w2);
+ return profile_merge (argv[optind], argv[optind+1], output_dir,
+ w1, w2, path);
}
/* If N_VAL is no-zero, normalize the profile by setting the largest counter
diff --git a/libgcc/libgcov-util.c b/libgcc/libgcov-util.c
index fff54c6a3..8978a30b3 100644
--- a/libgcc/libgcov-util.c
+++ b/libgcc/libgcov-util.c
@@ -516,6 +516,33 @@ merge_wrapper (gcov_merge_fn f, gcov_type *v1, gcov_unsigned_t n,
(*f) (v1, n);
}
+/* A helper function to merge function. It only merges the function in
+ * whitelist. */
+static int
+merge_whitelist (char *filePath, gcov_unsigned_t element)
+{
+ char functionIdent[20];
+ sprintf (functionIdent, "%u", element);
+ FILE *file = fopen (filePath, "r");
+ if (file == NULL)
+ {
+ fnotice (stderr, "Didn't get the whitelist we want. Please check the path.");
+ return 0;
+ }
+
+ char line[256];
+ while (fgets (line, sizeof (line), file))
+ {
+ if (strstr (line, functionIdent) != NULL)
+ {
+ fclose (file);
+ return 1;
+ }
+ }
+ fclose (file);
+ return 0;
+}
+
/* Offline tool to manipulate profile data.
This tool targets on matched profiles. But it has some tolerance on
unmatched profiles.
@@ -533,7 +560,8 @@ merge_wrapper (gcov_merge_fn f, gcov_type *v1, gcov_unsigned_t n,
/* Add INFO2's counter to INFO1, multiplying by weight W. */
static int
-gcov_merge (struct gcov_info *info1, struct gcov_info *info2, int w)
+gcov_merge (struct gcov_info *info1, struct gcov_info *info2, int w,
+ char* filePath)
{
unsigned f_ix;
unsigned n_functions = info1->n_functions;
@@ -551,7 +579,17 @@ gcov_merge (struct gcov_info *info1, struct gcov_info *info2, int w)
continue;
if (!gfi_ptr2 || gfi_ptr2->key != info2)
continue;
-
+
+ /* Use whitelist feature here. */
+ if (gfi_ptr1 && filePath != 0)
+ {
+ int res = merge_whitelist (filePath, gfi_ptr1->ident);
+ if (!res)
+ {
+ /* Don't merge this function here. */
+ continue;
+ }
+ }
if (gfi_ptr1->cfg_checksum != gfi_ptr2->cfg_checksum)
{
fnotice (stderr, "in %s, cfg_checksum mismatch, skipping\n",
@@ -622,7 +660,7 @@ find_match_gcov_info (struct gcov_info **array, int size,
int
gcov_profile_merge (struct gcov_info *tgt_profile, struct gcov_info *src_profile,
- int w1, int w2)
+ int w1, int w2, char* WhitelistPath)
{
struct gcov_info *gi_ptr;
struct gcov_info **tgt_infos;
@@ -652,7 +690,7 @@ gcov_profile_merge (struct gcov_info *tgt_profile, struct gcov_info *src_profile
if (w1 > 1)
{
for (i = 0; i < tgt_cnt; i++)
- gcov_merge (tgt_infos[i], tgt_infos[i], w1-1);
+ gcov_merge (tgt_infos[i], tgt_infos[i], w1-1, WhitelistPath);
}
/* Second pass, add src_profile to the tgt_profile. */
@@ -666,14 +704,14 @@ gcov_profile_merge (struct gcov_info *tgt_profile, struct gcov_info *src_profile
in_src_not_tgt[unmatch_info_cnt++] = gi_ptr;
continue;
}
- gcov_merge (gi_ptr1, gi_ptr, w2);
+ gcov_merge (gi_ptr1, gi_ptr, w2, WhitelistPath);
}
/* For modules in src but not in tgt. We adjust the counter and append. */
for (i = 0; i < unmatch_info_cnt; i++)
{
gi_ptr = in_src_not_tgt[i];
- gcov_merge (gi_ptr, gi_ptr, w2 - 1);
+ gcov_merge (gi_ptr, gi_ptr, w2 - 1, WhitelistPath);
gi_ptr->next = NULL;
tgt_tail->next = gi_ptr;
tgt_tail = gi_ptr;
--
2.33.0
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