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tools/power turbostat: Fix PMT mmaped file size rounding

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This (the old code) is just not how you round up to a page size.
Noticed on a recent Intel platform. Previous ones must have been
reporting sizes already aligned to a page and so the bug was missed when
testing.

Fixes: f0e4ed752fda ("tools/power turbostat: Add early support for PMT counters")
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Patryk Wlazlyn 2024-12-20 13:38:34 +01:00 committed by Len Brown
parent 4a358ba215
commit 2f60f03934
1 changed files with 3 additions and 1 deletions
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4
tools/power/x86/turbostat/turbostat.c
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@ -95,6 +95,8 @@
#define INTEL_ECORE_TYPE 0x20
#define INTEL_PCORE_TYPE 0x40
#define ROUND_UP_TO_PAGE_SIZE(n) (((n) + 0x1000UL-1UL) & ~(0x1000UL-1UL))
enum counter_scope { SCOPE_CPU, SCOPE_CORE, SCOPE_PACKAGE };
enum counter_type { COUNTER_ITEMS, COUNTER_CYCLES, COUNTER_SECONDS, COUNTER_USEC, COUNTER_K2M };
enum counter_format { FORMAT_RAW, FORMAT_DELTA, FORMAT_PERCENT, FORMAT_AVERAGE };
@ -8996,7 +8998,7 @@ struct pmt_mmio *pmt_mmio_open(unsigned int target_guid)
if (fd_pmt == -1)
goto loop_cleanup_and_break;
mmap_size = (size + 0x1000UL) & (~0x1000UL);
mmap_size = ROUND_UP_TO_PAGE_SIZE(size);
mmio = mmap(0, mmap_size, PROT_READ, MAP_SHARED, fd_pmt, 0);
if (mmio != MAP_FAILED) {