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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-07 17:02:58 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-07 17:02:58 -0800 |
| commit | 72eb6a791459c87a0340318840bb3bd9252b627b (patch) | |
| tree | 3bfb8ad99f9c7e511f37f72d57b56a2cea06d753 /arch/x86/kernel/ftrace.c | |
| parent | 23d69b09b78c4876e134f104a3814c30747c53f1 (diff) | |
| parent | 55ee4ef30241a62b700f79517e6d5ef2ddbefa67 (diff) | |
| download | linux-72eb6a791459c87a0340318840bb3bd9252b627b.tar.bz2 | |
Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (30 commits)
gameport: use this_cpu_read instead of lookup
x86: udelay: Use this_cpu_read to avoid address calculation
x86: Use this_cpu_inc_return for nmi counter
x86: Replace uses of current_cpu_data with this_cpu ops
x86: Use this_cpu_ops to optimize code
vmstat: User per cpu atomics to avoid interrupt disable / enable
irq_work: Use per cpu atomics instead of regular atomics
cpuops: Use cmpxchg for xchg to avoid lock semantics
x86: this_cpu_cmpxchg and this_cpu_xchg operations
percpu: Generic this_cpu_cmpxchg() and this_cpu_xchg support
percpu,x86: relocate this_cpu_add_return() and friends
connector: Use this_cpu operations
xen: Use this_cpu_inc_return
taskstats: Use this_cpu_ops
random: Use this_cpu_inc_return
fs: Use this_cpu_inc_return in buffer.c
highmem: Use this_cpu_xx_return() operations
vmstat: Use this_cpu_inc_return for vm statistics
x86: Support for this_cpu_add, sub, dec, inc_return
percpu: Generic support for this_cpu_add, sub, dec, inc_return
...
Fixed up conflicts: in arch/x86/kernel/{apic/nmi.c, apic/x2apic_uv_x.c, process.c}
as per Tejun.
Diffstat (limited to 'arch/x86/kernel/ftrace.c')
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 298448656b60..382eb2936d4d 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -170,9 +170,9 @@ static void ftrace_mod_code(void) void ftrace_nmi_enter(void) { - __get_cpu_var(save_modifying_code) = modifying_code; + __this_cpu_write(save_modifying_code, modifying_code); - if (!__get_cpu_var(save_modifying_code)) + if (!__this_cpu_read(save_modifying_code)) return; if (atomic_inc_return(&nmi_running) & MOD_CODE_WRITE_FLAG) { @@ -186,7 +186,7 @@ void ftrace_nmi_enter(void) void ftrace_nmi_exit(void) { - if (!__get_cpu_var(save_modifying_code)) + if (!__this_cpu_read(save_modifying_code)) return; /* Finish all executions before clearing nmi_running */ |