diff options
| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
| commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
| tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/arm64/include/asm/hw_breakpoint.h | |
| parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) | |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/arm64/include/asm/hw_breakpoint.h')
| -rw-r--r-- | kernel/arch/arm64/include/asm/hw_breakpoint.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/arch/arm64/include/asm/hw_breakpoint.h b/kernel/arch/arm64/include/asm/hw_breakpoint.h index 52b484b6a..9732908bf 100644 --- a/kernel/arch/arm64/include/asm/hw_breakpoint.h +++ b/kernel/arch/arm64/include/asm/hw_breakpoint.h @@ -16,6 +16,9 @@ #ifndef __ASM_HW_BREAKPOINT_H #define __ASM_HW_BREAKPOINT_H +#include <asm/cputype.h> +#include <asm/cpufeature.h> + #ifdef __KERNEL__ struct arch_hw_breakpoint_ctrl { @@ -132,5 +135,23 @@ static inline void ptrace_hw_copy_thread(struct task_struct *task) extern struct pmu perf_ops_bp; +/* Determine number of BRP registers available. */ +static inline int get_num_brps(void) +{ + u64 dfr0 = read_system_reg(SYS_ID_AA64DFR0_EL1); + return 1 + + cpuid_feature_extract_unsigned_field(dfr0, + ID_AA64DFR0_BRPS_SHIFT); +} + +/* Determine number of WRP registers available. */ +static inline int get_num_wrps(void) +{ + u64 dfr0 = read_system_reg(SYS_ID_AA64DFR0_EL1); + return 1 + + cpuid_feature_extract_unsigned_field(dfr0, + ID_AA64DFR0_WRPS_SHIFT); +} + #endif /* __KERNEL__ */ #endif /* __ASM_BREAKPOINT_H */ |