diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2017-02-24 02:48:14 -0600 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-30 09:53:51 +0200 |
| commit | 6aad0c6269052a6114259deaf664ce350bf64fa2 (patch) | |
| tree | 6a95b57a712ddf930d338d81550bb8c1b2c69946 /arch/x86/events/amd | |
| parent | f9573e53f123ee487cca737139f3a43897a6383e (diff) | |
x86/events/amd/iommu: Clean up bitwise operations
Clean up register initialization and make use of BIT_ULL(x) where
appropriate. This should not affect logic and functionality.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jörg Rödel <joro@8bytes.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
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>
Cc: iommu@lists.linux-foundation.org
Link: http://lkml.kernel.org/r/1487926102-13073-3-git-send-email-Suravee.Suthikulpanit@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/events/amd')
| -rw-r--r-- | arch/x86/events/amd/iommu.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/events/amd/iommu.c b/arch/x86/events/amd/iommu.c index 8d8ed40613fa..e112f498a019 100644 --- a/arch/x86/events/amd/iommu.c +++ b/arch/x86/events/amd/iommu.c @@ -164,11 +164,11 @@ static int get_next_avail_iommu_bnk_cntr(struct perf_amd_iommu *perf_iommu) for (bank = 0, shift = 0; bank < max_banks; bank++) { for (cntr = 0; cntr < max_cntrs; cntr++) { shift = bank + (bank*3) + cntr; - if (perf_iommu->cntr_assign_mask & (1ULL<<shift)) { + if (perf_iommu->cntr_assign_mask & BIT_ULL(shift)) { continue; } else { - perf_iommu->cntr_assign_mask |= (1ULL<<shift); - retval = ((u16)((u16)bank<<8) | (u8)(cntr)); + perf_iommu->cntr_assign_mask |= BIT_ULL(shift); + retval = ((bank & 0xFF) << 8) | (cntr & 0xFF); goto out; } } @@ -265,23 +265,23 @@ static void perf_iommu_enable_event(struct perf_event *ev) _GET_BANK(ev), _GET_CNTR(ev) , IOMMU_PC_COUNTER_SRC_REG, ®, true); - reg = 0ULL | devid | (_GET_DEVID_MASK(ev) << 32); + reg = devid | (_GET_DEVID_MASK(ev) << 32); if (reg) - reg |= (1UL << 31); + reg |= BIT(31); amd_iommu_pc_get_set_reg_val(devid, _GET_BANK(ev), _GET_CNTR(ev) , IOMMU_PC_DEVID_MATCH_REG, ®, true); - reg = 0ULL | _GET_PASID(ev) | (_GET_PASID_MASK(ev) << 32); + reg = _GET_PASID(ev) | (_GET_PASID_MASK(ev) << 32); if (reg) - reg |= (1UL << 31); + reg |= BIT(31); amd_iommu_pc_get_set_reg_val(devid, _GET_BANK(ev), _GET_CNTR(ev) , IOMMU_PC_PASID_MATCH_REG, ®, true); - reg = 0ULL | _GET_DOMID(ev) | (_GET_DOMID_MASK(ev) << 32); + reg = _GET_DOMID(ev) | (_GET_DOMID_MASK(ev) << 32); if (reg) - reg |= (1UL << 31); + reg |= BIT(31); amd_iommu_pc_get_set_reg_val(devid, _GET_BANK(ev), _GET_CNTR(ev) , IOMMU_PC_DOMID_MATCH_REG, ®, true); |