diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-09-23 10:41:09 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-09-23 10:41:09 +0300 |
| commit | d0d0313c2ae4bc220c4ed96ce340860a4e74a2e9 (patch) | |
| tree | 8877a60171d806ce1d83d86d319b9db9f731bcb4 /tools/lib/traceevent | |
| parent | f73e22ab450140830005581c2c7ec389791a1b8d (diff) | |
| parent | c2e4b24ff848bb180f9b9cd873a38327cd219ad2 (diff) | |
| download | linux-d0d0313c2ae4bc220c4ed96ce340860a4e74a2e9.tar.xz | |
Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
- Fix libtraceevent string handling in heterogeneous arch environments. (Kapileshwar Singh)
- Avoid infinite loop at buildid processing with no samples in 'perf record'. (Mark Rutland)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/lib/traceevent')
| -rw-r--r-- | tools/lib/traceevent/event-parse.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index 4d885934b919..cf42b090477b 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -3795,7 +3795,7 @@ static void print_str_arg(struct trace_seq *s, void *data, int size, struct format_field *field; struct printk_map *printk; long long val, fval; - unsigned long addr; + unsigned long long addr; char *str; unsigned char *hex; int print; @@ -3828,13 +3828,30 @@ static void print_str_arg(struct trace_seq *s, void *data, int size, */ if (!(field->flags & FIELD_IS_ARRAY) && field->size == pevent->long_size) { - addr = *(unsigned long *)(data + field->offset); + + /* Handle heterogeneous recording and processing + * architectures + * + * CASE I: + * Traces recorded on 32-bit devices (32-bit + * addressing) and processed on 64-bit devices: + * In this case, only 32 bits should be read. + * + * CASE II: + * Traces recorded on 64 bit devices and processed + * on 32-bit devices: + * In this case, 64 bits must be read. + */ + addr = (pevent->long_size == 8) ? + *(unsigned long long *)(data + field->offset) : + (unsigned long long)*(unsigned int *)(data + field->offset); + /* Check if it matches a print format */ printk = find_printk(pevent, addr); if (printk) trace_seq_puts(s, printk->printk); else - trace_seq_printf(s, "%lx", addr); + trace_seq_printf(s, "%llx", addr); break; } str = malloc(len + 1); |