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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/arch/s390/util/machine.c | |
parent | Initial commit. (diff) | |
download | linux-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 'tools/perf/arch/s390/util/machine.c')
-rw-r--r-- | tools/perf/arch/s390/util/machine.c | 36 |
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; +} |