diff options
| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2019-08-21 15:47:23 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-08-26 13:00:13 +0300 |
| commit | fffec50f541ace292383c0cbe9a2a97d16d201c6 (patch) | |
| tree | fbda9791a61d635a41778a4b1a55ac3769288da8 /arch | |
| parent | 90583af61d0c0d2826f42a297a03645b35c49085 (diff) | |
| download | linux-fffec50f541ace292383c0cbe9a2a97d16d201c6.tar.xz | |
perf/x86/intel/pt: Use helpers to obtain ToPA entry size
There are a few places in the PT driver that need to obtain the size of
a ToPA entry, some of them for the current ToPA entry in the buffer.
Use helpers for those, to make the lines shorter and more readable.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/20190821124727.73310-3-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/events/intel/pt.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c index 9d9258fe42ce..f269875fb85f 100644 --- a/arch/x86/events/intel/pt.c +++ b/arch/x86/events/intel/pt.c @@ -572,6 +572,7 @@ struct topa { /* make -1 stand for the last table entry */ #define TOPA_ENTRY(t, i) ((i) == -1 ? &(t)->table[(t)->last] : &(t)->table[(i)]) +#define TOPA_ENTRY_SIZE(t, i) (sizes(TOPA_ENTRY((t), (i))->size)) /** * topa_alloc() - allocate page-sized ToPA table @@ -771,7 +772,7 @@ static void pt_update_head(struct pt *pt) /* offset of the current output region within this table */ for (topa_idx = 0; topa_idx < buf->cur_idx; topa_idx++) - base += sizes(buf->cur->table[topa_idx].size); + base += TOPA_ENTRY_SIZE(buf->cur, topa_idx); if (buf->snapshot) { local_set(&buf->data_size, base); @@ -800,7 +801,7 @@ static void *pt_buffer_region(struct pt_buffer *buf) */ static size_t pt_buffer_region_size(struct pt_buffer *buf) { - return sizes(buf->cur->table[buf->cur_idx].size); + return TOPA_ENTRY_SIZE(buf->cur, buf->cur_idx); } /** @@ -830,7 +831,7 @@ static void pt_handle_status(struct pt *pt) * know. */ if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries) || - buf->output_off == sizes(TOPA_ENTRY(buf->cur, buf->cur_idx)->size)) { + buf->output_off == pt_buffer_region_size(buf)) { perf_aux_output_flag(&pt->handle, PERF_AUX_FLAG_TRUNCATED); advance++; @@ -925,8 +926,7 @@ static int pt_buffer_reset_markers(struct pt_buffer *buf, unsigned long idx, npages, wakeup; /* can't stop in the middle of an output region */ - if (buf->output_off + handle->size + 1 < - sizes(TOPA_ENTRY(buf->cur, buf->cur_idx)->size)) { + if (buf->output_off + handle->size + 1 < pt_buffer_region_size(buf)) { perf_aux_output_flag(handle, PERF_AUX_FLAG_TRUNCATED); return -EINVAL; } @@ -1032,7 +1032,7 @@ static void pt_buffer_reset_offsets(struct pt_buffer *buf, unsigned long head) buf->cur = (struct topa *)((unsigned long)buf->topa_index[pg] & PAGE_MASK); buf->cur_idx = ((unsigned long)buf->topa_index[pg] - (unsigned long)buf->cur) / sizeof(struct topa_entry); - buf->output_off = head & (sizes(buf->cur->table[buf->cur_idx].size) - 1); + buf->output_off = head & (pt_buffer_region_size(buf) - 1); local64_set(&buf->head, head); local_set(&buf->data_size, 0); |