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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/arch/s390/util/machine.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--tools/perf/arch/s390/util/machine.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/tools/perf/arch/s390/util/machine.c b/tools/perf/arch/s390/util/machine.c
new file mode 100644
index 000000000..7219ecdb8
--- /dev/null
+++ b/tools/perf/arch/s390/util/machine.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <internal/lib.h> // page_size
+#include "machine.h"
+#include "api/fs/fs.h"
+#include "debug.h"
+#include "symbol.h"
+
+int arch__fix_module_text_start(u64 *start, u64 *size, const char *name)
+{
+ u64 m_start = *start;
+ char path[PATH_MAX];
+
+ snprintf(path, PATH_MAX, "module/%.*s/sections/.text",
+ (int)strlen(name) - 2, name + 1);
+ if (sysfs__read_ull(path, (unsigned long long *)start) < 0) {
+ pr_debug2("Using module %s start:%#lx\n", path, m_start);
+ *start = m_start;
+ } else {
+ /* Successful read of the modules segment text start address.
+ * Calculate difference between module start address
+ * in memory and module text segment start address.
+ * For example module load address is 0x3ff8011b000
+ * (from /proc/modules) and module text segment start
+ * address is 0x3ff8011b870 (from file above).
+ *
+ * Adjust the module size and subtract the GOT table
+ * size located at the beginning of the module.
+ */
+ *size -= (*start - m_start);
+ }
+
+ return 0;
+}