diff options
| author | Paul Mackerras <paulus@samba.org> | 2009-05-14 13:29:14 +1000 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-15 16:38:55 +0200 |
| commit | ef923214a4816c289e4af2d67a9ebb1a31e4ac61 (patch) | |
| tree | bf850f4f53a4f8391b6b9c0335e58364668586d9 /arch/powerpc/kernel/power6-pmu.c | |
| parent | 2e569d36729c8105ae066a9b105068305442cc77 (diff) | |
| download | linux-ef923214a4816c289e4af2d67a9ebb1a31e4ac61.tar.bz2 | |
perf_counter: powerpc: use u64 for event codes internally
Although the perf_counter API allows 63-bit raw event codes,
internally in the powerpc back-end we had been using 32-bit
event codes. This expands them to 64 bits so that we can add
bits for specifying threshold start/stop events and instruction
sampling modes later.
This also corrects the return value of can_go_on_limited_pmc;
we were returning an event code rather than just a 0/1 value in
some circumstances. That didn't particularly matter while event
codes were 32-bit, but now that event codes are 64-bit it
might, so this fixes it.
[ Impact: extend PowerPC perfcounter interfaces from u32 to u64 ]
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <18955.36874.472452.353104@drongo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/powerpc/kernel/power6-pmu.c')
| -rw-r--r-- | arch/powerpc/kernel/power6-pmu.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/power6-pmu.c b/arch/powerpc/kernel/power6-pmu.c index d44049f0ae27..ab7c615c458d 100644 --- a/arch/powerpc/kernel/power6-pmu.c +++ b/arch/powerpc/kernel/power6-pmu.c @@ -134,7 +134,7 @@ static u32 marked_bus_events[16] = { * Returns 1 if event counts things relating to marked instructions * and thus needs the MMCRA_SAMPLE_ENABLE bit set, or 0 if not. */ -static int power6_marked_instr_event(unsigned int event) +static int power6_marked_instr_event(u64 event) { int pmc, psel, ptype; int bit, byte, unit; @@ -172,7 +172,7 @@ static int power6_marked_instr_event(unsigned int event) /* * Assign PMC numbers and compute MMCR1 value for a set of events */ -static int p6_compute_mmcr(unsigned int event[], int n_ev, +static int p6_compute_mmcr(u64 event[], int n_ev, unsigned int hwc[], u64 mmcr[]) { u64 mmcr1 = 0; @@ -265,7 +265,7 @@ static int p6_compute_mmcr(unsigned int event[], int n_ev, * 20-23, 24-27, 28-31 ditto for bytes 1, 2, 3 * 32-34 select field: nest (subunit) event selector */ -static int p6_get_constraint(unsigned int event, u64 *maskp, u64 *valp) +static int p6_get_constraint(u64 event, u64 *maskp, u64 *valp) { int pmc, byte, sh, subunit; u64 mask = 0, value = 0; @@ -298,7 +298,7 @@ static int p6_get_constraint(unsigned int event, u64 *maskp, u64 *valp) return 0; } -static int p6_limited_pmc_event(unsigned int event) +static int p6_limited_pmc_event(u64 event) { int pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; @@ -337,7 +337,7 @@ static const unsigned int event_alternatives[][MAX_ALT] = { * This could be made more efficient with a binary search on * a presorted list, if necessary */ -static int find_alternatives_list(unsigned int event) +static int find_alternatives_list(u64 event) { int i, j; unsigned int alt; @@ -356,12 +356,12 @@ static int find_alternatives_list(unsigned int event) return -1; } -static int p6_get_alternatives(unsigned int event, unsigned int flags, - unsigned int alt[]) +static int p6_get_alternatives(u64 event, unsigned int flags, u64 alt[]) { int i, j, nlim; - unsigned int aevent, psel, pmc; + unsigned int psel, pmc; unsigned int nalt = 1; + u64 aevent; alt[0] = event; nlim = p6_limited_pmc_event(event); |